opencv（java） byte[] 转换为Mat&Mat 转 byte[](用好Mat的get(),put()方法)

byte[] 转换为Mat

第一步：先定义一个自己要的Mat

Mat image1 = new Mat(240,320, CvType.CV_8UC1);

第二步：将你的byte[] grayData 放进去

image1.put(0,0,grayData);

好了，你的Mat生成啦

参考api代码（\openCVLibrary320\src\main\java\org\opencv\imgproc）中方法

    public static Mat vector_uchar_to_Mat(List<Byte> bs) {        Mat res;        int count = (bs != null) ? bs.size() : 0;        if (count > 0) {            res = new Mat(count, 1, CvType.CV_8UC1);            byte[] buff = new byte[count];            for (int i = 0; i < count; i++) {                byte b = bs.get(i);                buff[i] = b;            }            res.put(0, 0, buff);        } else {            res = new Mat();        }        return res;    }

Mat 转 byte[]

   Mat grayMatData = new Mat();   cvtColor(rgbData,grayMatData,COLOR_RGB2GRAY);   byte [] grayData = new byte[grayMatData.cols()*grayMatData.rows()];   grayMatData.get(0,0,grayData);