Ask Your Question

Revision history [back]

click to hide/show revision 1
initial version

process Android image with opencv

I have this code :

    protected Bitmap processFrame(byte[] data) {
        Mat mat = new Mat(mFrameHeight, mFrameWidth, CvType.CV_8UC3);
        mat.put(0, 0, data);

        //process mat with native code

        Utils.matToBitmap(mat, mBitmap);

        return mBitmap;

private Camera.PreviewCallback previewCallback = new Camera.PreviewCallback() {

    public void onPreviewFrame(byte[] data, Camera camera) {
        Bitmap bmp = processFrame(data);

        if (bmp != null) {
            //draw bmp

at some point I define the bitmap as:

mBitmap = Bitmap.createBitmap(mFrameWidth, mFrameHeight, Bitmap.Config.RGB_565);

The result is the same camera frames captured but in gray scale repeated 3 times horizontally, I tried CvType.CV_8UC4 and they are repeated 4 times instead.

I need to display the whole image as is using the same steps

Does anybody catch the mistake ??