Reading mat files in java

edit

don't save it as mat file, you can save the matrix as dat file by doing this this:

in matlab:

fid=fopen('test.dat','w+');
fprintf(fid,'%d\n',currFrame_Cropped_Gray);
fclose(fid);

This will save your matrix as 1 column in a dat file, so after it you can read in java line by line.

now in java:

private Mat ReadDemoFromFile()
{
    Mat tempmat =  new Mat(new Size(701, 701), CvType.CV_8U);
    InputStream in;
        try {
            in = new FileInputStream(Environment.getExternalStorageDirectory() + "/DCIM/Frames/test.dat");
            InputStreamReader is = new InputStreamReader(in);

            BufferedReader br = new BufferedReader(is);
            String read;
            for(int i = 0 ; i< 701; i++)
                for(int j = 0 ; j < 701 ; j++)
                {
                    try {
                        read = br.readLine();

                        tempmat.put(j, i, Integer.parseInt(read));
                    } catch (IOException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                }

            return tempmat;
        } catch (FileNotFoundException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }



    return tempmat;


}

Here I saved the data file in my device, if you want you can save the file in the RAW folder inside your project. This is an example of what I did, so change all the parameters and sizes as you wish.