Convert BufferedImage to Mat?

[Dinh Thap]

Here I did but not working:

int width = bi.getWidth();
int height = bi.getHeight();
opencv_core.Mat mat = new opencv_core.Mat(new opencv_core.Size(width,height), CV_8UC3);
int[] data = ImageJavaUtils.getRGBPixels(bi);

UByteRawIndexer idx = mat.createIndexer();


for(int i = 0;i<height;i++){
    for(int j = 0;j<width;j++){
        idx.put(i,j,data[j+i*width]);
    }
}

I did use tradition javacv way but in my function of project it does not working, even I must saved the image into HDD after use imread and use toMat below then it works. So I must be 

find out other way to convert same as above but not working. Can you show me where I wrong? 

public static opencv_core.Mat toMat(BufferedImage img){
    OpenCVFrameConverter.ToIplImage cv = new OpenCVFrameConverter.ToIplImage();
    Java2DFrameConverter jcv = new Java2DFrameConverter();
    return cv.convertToMat(jcv.convert(img));
}

[Samuel Audet]

On 06/17/2016 07:15 PM, Dinh Thap wrote:

I did use tradition javacv way but in my function of project it does not working, even I must saved the image into HDD after use imread and use toMat below then it works. So I must be 

find out other way to convert same as above but not working. Can you show me where I wrong? 

public static opencv_core.Mat toMat(BufferedImage img){
    OpenCVFrameConverter.ToIplImage cv = new OpenCVFrameConverter.ToIplImage();
    Java2DFrameConverter jcv = new Java2DFrameConverter();
    return cv.convertToMat(jcv.convert(img));
}

When you say "it does not working", what isn't working? What happens?

[Samuel Audet]

And, what happens? What error do you get?

On 06/18/2016 07:57 PM, Dinh Thap wrote:

Here I played with not working:

Object B: BufferedImage bi,....

class A(Object B){

    BufferedImage process = preprocess(B);

[Dinh Thap]

Object B: BufferedImage bi,....

class A(Object B){

    BufferedImage process = preprocess(B);

             Mat img = toMat(process)

I get img = null. But I save process into HDD and use imread I get success. 

[Dinh Thap]

I posted gist:

https://gist.github.com/dinhthap/bc890da9a938164bf2ed6c701387f488#file-recognize-L167

[Samuel Audet]

On 06/18/2016 08:08 PM, Dinh Thap wrote:
> I get img = null. But I save process into HDD and use imread I get success.

Have you tried to use OpenCVFrameConverter.ToMat instead of
OpenCVFrameConverter.ToIplImage?

[Dinh Thap]

Thank you for your patience.