Caffe源码：io.cpp 分析

目录

简单介绍

io.cpp 主要定义了一些读取图像或者文件，以及它们之间的一些转化的函数。

主要函数

1.ReadProtoFromTextFile 函数：

从prototxt文件中读取message参数

<code class="hljs d has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">bool</span> ReadProtoFromTextFile(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">char</span>* filename, Message* proto) {  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> fd = open(filename, O_RDONLY);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//打开文件</span>  CHECK_NE(fd, -<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>) << <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"File not found: "</span> << filename;  FileInputStream* input = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> FileInputStream(fd);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//新建一个FileInputStream对象 input</span>  <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">bool</span> success = google::protobuf::TextFormat::Parse(input, proto);  <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//解析input文件中的Message， 即使文件中参数定义顺序与Message中的参数定义顺序不一致，也可以解析。</span>  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">delete</span> input;  close(fd);  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> success;}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li></ul>

2.WriteProtoToTextFile 函数：

<code class="hljs d has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> WriteProtoToTextFile(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> Message& proto, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">char</span>* filename) {  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>644);  FileOutputStream* output = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> FileOutputStream(fd);  CHECK(google::protobuf::TextFormat::Print(proto, output));  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">delete</span> output;  close(fd);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 和ReadProtoFromTextFile功能相反</span>}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li></ul>

3.ReadProtoFromBinaryFile 函数：

从二进制文件中读取message 参数

<code class="hljs d has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">bool</span> ReadProtoFromBinaryFile(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">char</span>* filename, Message* proto) {<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//读取二进制文件</span>  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> fd = open(filename, O_RDONLY);  CHECK_NE(fd, -<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>) << <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"File not found: "</span> << filename;  ZeroCopyInputStream* raw_input = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> FileInputStream(fd);  CodedInputStream* coded_input = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> CodedInputStream(raw_input);  <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 建立CodedInputStream类的对象coded_input</span>  coded_input->SetTotalBytesLimit(kProtoReadBytesLimit, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">536870912</span>);  <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//折设置最大字节限制</span>  <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">bool</span> success = proto->ParseFromCodedStream(coded_input);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//解析message</span>  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">delete</span> coded_input;  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">delete</span> raw_input;  close(fd);  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> success;}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li></ul>

4.WriteProtoToBinaryFile 函数 ：

<code class="hljs cs has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> WriteProtoToBinaryFile(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> Message& proto, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">char</span>* filename) {  fstream output(filename, ios::<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">out</span> | ios::trunc | ios::binary);  CHECK(proto.SerializeToOstream(&output));}<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//和ReadProtoFromBinaryFile功能相反</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li></ul>

5.ReadImageToCVMat 函数：

以cvMat格式读入图像

<code class="hljs cs has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">cv::Mat ReadImageToCVMat(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">string</span>& filename,<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//is_color 为1读入彩色图像，0灰度图</span>    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> height, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> width, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">bool</span> is_color) {    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//height，width都不为0则把图像resize 到height*width</span>  cv::Mat cv_img;  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> cv_read_flag = (is_color ? CV_LOAD_IMAGE_COLOR :    CV_LOAD_IMAGE_GRAYSCALE);  cv::Mat cv_img_origin = cv::imread(filename, cv_read_flag);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//读入图像</span>  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (!cv_img_origin.data) {    LOG(ERROR) << <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"Could not open or find file "</span> << filename;    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> cv_img_origin;  }  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (height > <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span> && width > <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>) {    cv::resize(cv_img_origin, cv_img, cv::Size(width, height));  } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> {    cv_img = cv_img_origin;  }  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> cv_img;}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li></ul>

重载函数，提供各种不同的功能

<code class="hljs cs has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">cv::Mat ReadImageToCVMat(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">string</span>& filename,    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> height, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> width) {  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> ReadImageToCVMat(filename, height, width, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>);}<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//重载函数，读入彩色图</span>cv::Mat ReadImageToCVMat(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">string</span>& filename,    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">bool</span> is_color) {  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> ReadImageToCVMat(filename, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, is_color);}<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//重载函数，读入图像但不resize</span>cv::Mat ReadImageToCVMat(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">string</span>& filename) {  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> ReadImageToCVMat(filename, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>);}<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//重载函数，读入彩色图像且不resize</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li></ul>

6.matchExt 函数：

匹配文件后缀名

<code class="hljs ruby has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">static bool matchExt(const <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">std:</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:string</span> & fn,                     <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">std:</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:string</span> en) {  size_t p = fn.rfind(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'.'</span>);<span class="hljs-regexp" style="color: rgb(0, 136, 0); box-sizing: border-box;">//p</span> 为文件名中“.”所在位置的索引  <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">std:</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:string</span> ext = p != fn.npos ? fn.substr(p) <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span> fn;<span class="hljs-regexp" style="color: rgb(0, 136, 0); box-sizing: border-box;">//ext</span>为文件后缀名<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">".xxx"</span>  <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">std:</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:transform</span>(ext.<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span>(), ext.<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span>(), ext.<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span>(), <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:tolower</span>);  <span class="hljs-regexp" style="color: rgb(0, 136, 0); box-sizing: border-box;">//</span>把ext中的大写字母转化小写字母  <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">std:</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:transform</span>(en.<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span>(), en.<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">end</span>(), en.<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">begin</span>(), <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:tolower</span>);  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> ( ext == en )    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>;  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> ( en == <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"jpg"</span> && ext == <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"jpeg"</span> )    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>;  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">false</span>;}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li></ul>

7.CVMatToDatum 函数：

cvMat 格式数据转化为Datum格式

<code class="hljs cpp has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> CVMatToDatum(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> cv::Mat& cv_img, Datum* datum) {  CHECK(cv_img.depth() == CV_8U) << <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"Image data type must be unsigned byte"</span>;  datum->set_channels(cv_img.channels());  datum->set_height(cv_img.rows);  datum->set_width(cv_img.cols);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//分别设置channel， height，width</span>  datum->clear_data();  datum->clear_float_data();  datum->set_encoded(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">false</span>);  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> datum_channels = datum->channels();  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> datum_height = datum->height();  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> datum_width = datum->width();  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> datum_size = datum_channels * datum_height * datum_width;  <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">std</span>::<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">string</span> buffer(datum_size, <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">' '</span>);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//将buffer初始化为字符''的datum_size个副本 </span>  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> h = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>; h < datum_height; ++h) {    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> uchar* ptr = cv_img.ptr<uchar>(h);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//指向图像第h行的指针</span>    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> img_index = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>;    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> w = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>; w < datum_width; ++w) {      <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> c = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>; c < datum_channels; ++c) {        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> datum_index = (c * datum_height + h) * datum_width + w;        buffer[datum_index] = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static_cast</span><<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">char</span>>(ptr[img_index++]);      }    }  }  datum->set_data(buffer);}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li></ul>

8.ReadFileToDatum 函数：

<code class="hljs mel has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">bool ReadFileToDatum(const <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">string</span>& filename, const <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> label,    Datum* datum) {  std::streampos <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">size</span>;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//获取文件指针位置 size</span>  fstream <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">file</span>(filename.c_str(), ios::<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">in</span>|ios::binary|ios::ate);  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">file</span>.is_open()) {    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">size</span> = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">file</span>.tellg();<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//代表当前get 流指针的位置</span>    std::<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">string</span> buffer(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">size</span>, <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">' '</span>);    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">file</span>.seekg(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, ios::beg);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//设置0输入文件流的起始位置</span>    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">file</span>.read(&buffer[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>], <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">size</span>);    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">file</span>.close();    datum->set_data(buffer);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//data_->assign(buffer)</span>    datum->set_label(label);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//label_ = label</span>    datum->set_encoded(true);    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> true;  } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> {    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> false;  }}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li></ul>

9.ReadImageToDatum 函数：

读入图像到Datum

<code class="hljs cpp has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">bool</span> ReadImageToDatum(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">string</span>& filename, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> label,    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> height, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> width, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">bool</span> is_color,    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">std</span>::<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">string</span> & encoding, Datum* datum) {  cv::Mat cv_img = ReadImageToCVMat(filename, height, width, is_color);  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (cv_img.data) {    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (encoding.size()) {      <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> ( (cv_img.channels() == <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span>) == is_color && !height && !width &&          matchExt(filename, encoding) )        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> ReadFileToDatum(filename, label, datum);      <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">std</span>::<span class="hljs-stl_container" style="box-sizing: border-box;"><span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">vector</span><uchar></span> buf;      cv::imencode(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"."</span>+encoding, cv_img, buf);      datum->set_data(<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">std</span>::<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">string</span>(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">reinterpret_cast</span><<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">char</span>*>(&buf[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>]),                      buf.size()));      datum->set_label(label);      datum->set_encoded(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>);      <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>;    }    CVMatToDatum(cv_img, datum);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//cvmat转为Datum格式</span>    datum->set_label(label);    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>;  } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> {    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">false</span>;  }}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li></ul>

10.DecodeDatumToCVMat 函数：

<code class="hljs cpp has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">cv::Mat DecodeDatumToCVMat(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> Datum& datum, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">bool</span> is_color) {  cv::Mat cv_img;  CHECK(datum.encoded()) << <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"Datum not encoded"</span>;  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">string</span>& data = datum.data();  <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">std</span>::<span class="hljs-stl_container" style="box-sizing: border-box;"><span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">vector</span><<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">char</span>></span> vec_data(data.c_str(), data.c_str() + data.size());  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> cv_read_flag = (is_color ? CV_LOAD_IMAGE_COLOR :    CV_LOAD_IMAGE_GRAYSCALE);  cv_img = cv::imdecode(vec_data, cv_read_flag);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//从内存都入图片</span>  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (!cv_img.data) {    LOG(ERROR) << <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"Could not decode datum "</span>;  }  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> cv_img;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//将encode 的Datum转化为cvMat</span>}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li></ul>

11.DecodeDatum 函数：

<code class="hljs cs has-numbering" style="color: inherit; display: block; padding: 0px; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background-image: initial; background-attachment: initial; background-color: transparent; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">bool</span> DecodeDatum(Datum* datum, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">bool</span> is_color) {  <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (datum->encoded()) {    cv::Mat cv_img = DecodeDatumToCVMat((*datum), is_color);    CVMatToDatum(cv_img, datum);    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>;  } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> {    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">false</span>;  }}<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//将encodedDatum转化为没有encode的Datum</span></code><code class="hljs cs has-numbering" style="color: inherit; display: block; padding: 0px; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background-image: initial; background-attachment: initial; background-color: transparent; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;"></span></code><code class="hljs cs has-numbering" style="display: block; padding: 0px; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background-image: initial; background-attachment: initial; background-color: transparent; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"><span style="color:#880000;"> 文章摘自http://blog.csdn.net/seven_first/article/details/47838717#5readimagetocvmat-函数</span></code><ul class="pre-numbering" style="color: rgb(51, 51, 51); box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li></ul>