二维码解析库zbar+openCV的移植和使用

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1. zbar linux-X86平台编译
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./configure --without-imagemagick --disable-video --without-qt --without-gtk --without-x --without-python --exec-prefix=/mnt/view/dsp_rv1108/app/qrdecoder/install --prefix=/mnt/view/dsp_rv1108/app/qrdecoder/install
make
make install 
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2. zbar linux-ARM平台交叉编译
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CC=arm-linux-gcc ./configure --host=arm-linux --without-imagemagick --disable-video --without-qt --without-gtk --without-x --without-python --exec-prefix=/mnt/view/dsp_rv1108/app/qrdecoder_cross_compile/install --prefix=/mnt/view/dsp_rv1108/app/qrdecoder_cross_compile/install LIBS=-L/mnt/view/dsp_rv1108/app/qrdecoder_cross_compile/libs/lib CPPFLAGS=-I/mnt/view/dsp_rv1108/app/qrdecoder_cross_compile/libs/include 
make
make install
其中:
CC 指定交叉gcc编译器名称
CPP 指定交叉g++编译器名称
--host 指定目标平台
--prefix 指定install 路径
LIBS=-L 指定编译时依赖的库路径 (可选)
CFLAGS CPPFLAGS 指定编译时的自定义头文件路径 (可选)
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3. linux-x86平台测试用例编译
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cd 到 release 文件夹下
make

./qrdecoder xxdk.png

对应的Makefile：

备注：确保PC平台已经安装openCV

SRCS = $(wildcard *.cpp)    # wildcard把 指定目录 ./ 下的所有后缀是cpp的文件全部展开。OBJS = $(SRCS:.cpp = .o)    # OBJS将$(SRCS)下的.cpp文件转化为.o文件CXX = g++                   # 代表所使用的编译器INCLUDES = -I/usr/local/include/opencv -I.    # 头文件查找路径 LIBS =  -L/usr/local/lib \        -lzbar \-lopencv_core \-lopencv_imgproc \-lopencv_highgui \-lopencv_imgcodecs                    # 链接库查找地址CXXFLAGS = -g -Wall -O0   #附加参数OUTPUT = qrdecoder     #输出程序名称all:$(OUTPUT)$(OUTPUT) : $(OBJS)$(CXX) $^ -o $@ $(INCLUDES) $(LIBS)%.o : %.cpp$(CXX) -c $< $(CXXFLAGS).PHONY:cleanclean:rm -rf *.out *.o qrdecoder    #清除中间文件及生成文件

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4. linux-ARM平台测试用例编译
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cd 到 release 文件夹下
make

编译完自动拷贝到SD卡

./qrdecoder xxdk.png

对应的Makefile：

注意：此处用到opencv的静态库，以及其他makefile中的静态库需要提前编译

SRCS = $(wildcard *.cpp)    OBJS = $(SRCS:.cpp = .o)   CXX = ../../../prebuilts/toolschain/usr/bin/arm-linux-g++STRIP = ../../../prebuilts/toolschain/usr/bin/arm-linux-stripINCLUDES = -I../../../external/libopencv/include/opencv \-I../../../external/libopencv/include/opencv2/core \-I../../../external/libopencv/include/opencv2 \-I../../../external/libopencv/include \-I../../../external/libopencv \-I../libs/include \-I../libs/include/zbar \-I. LIBS =  -L../../../external/libopencv \-L../libs/lib \-L../ \-L. \-lopencv_imgcodecs \-lopencv_imgproc \-lopencv_core \-lopencv_highgui \-lzbar \-lz \-liconv \-lpthread \-ltiff \-ljpeg \-llibjasper \#-llibjpeg \#-llibtiff \#-ltiffxx \#-lpng \#CXXFLAGS = -g -Wall -O0   OUTPUT = qrdecoder    all:$(OUTPUT)$(OUTPUT) : $(OBJS)$(CXX) $^ -o $@ $(INCLUDES) $(LIBS)$(STRIP) $(OUTPUT)@if [ -d /media/qfeel/56A0-9C18 ]; then \rm /media/qfeel/56A0-9C18/qrdecoder; \mv $(OUTPUT) /media/qfeel/56A0-9C18; \else \rm $(OUTPUT); \echo "please insert sd card!"; \fi%.o : %.cpp$(CXX) -c $< $(CXXFLAGS).PHONY:cleanclean:rm -rf *.out *.o qrdecoder    

通用的测试用例：

#include <cv.h>#include <zbar.h>#include <iostream>      #include <highgui.h>#include <opencv2/core/core.hpp>#include <opencv2/imgproc/imgproc.hpp>#include <opencv2/highgui/highgui.hpp>  using namespace std;      using namespace zbar;  using namespace cv;        int main(int argc, char*argv[])    {      if(argc != 2) {cout << "usage: qrdecoder <picture-name> " << endl;return 0;}//// 实例化扫描器对象,并配置//    ImageScanner scanner;          scanner.set_config(ZBAR_NONE, ZBAR_CFG_ENABLE, 1);    //// 读取图片//    Mat imageGray = imread(argv[1], 0);      //// 图像灰度化//    //cvtColor(image, imageGray, CV_RGB2GRAY);          int width = imageGray.cols;      cout << "width = "<< width << endl;cout << 3 << endl;    int height = imageGray.rows;      cout << "height = "<< height << endl;    uchar *raw = (uchar *)imageGray.data;         //// 实例化Image对象, 按照"Y800"格式构造// imageZbar 对象, 并讲图像数据传入该对象//cout << 4 << endl;    Image imageZbar(width, height, "Y800", raw, width * height);        //// 调度扫描器扫描Image对象imageZber//cout << 5 << endl;    scanner.scan(imageZbar);     Image::SymbolIterator symbol = imageZbar.symbol_begin();      if(imageZbar.symbol_begin() == imageZbar.symbol_end()) {  cout << 6 << endl;        cout<<"decode error, check image!"<<endl;      }  cout << 7 << endl;    for(; symbol != imageZbar.symbol_end(); ++symbol) {      cout << 8 << endl;        cout << "code type: " << symbol->get_type_name() << endl;        cout << "code data: " << symbol->get_data() << endl;    }      //  imshow("XXDK Image", image);        //  waitKey();        imageZbar.set_data(NULL, 0);      return 0;  }