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Hi guys, I'm trying to convert image from jpeg format to png format. I'm also trying to apply Alpha on image so png save imag must be with alpha channel. I am not able to execute this(result.push_back<mat>(mask);) line in the code successfully.

Mat jpegImageMat = Highgui.imread("mnt/sdcard/aaawatermark/bird.jpg"); Mat gray_image = new Mat(), mask = new Mat(), rgba_image = new Mat(); List<mat> result = new ArrayList<mat>(); Core.split(jpegImageMat, result); Imgproc.cvtColor(jpegImageMat, gray_image, Imgproc.COLOR_BGR2RGBA); Imgproc.threshold(gray_image, mask, 128, 255, Imgproc.THRESH_BINARY); result.push_back<mat>(mask); Core.merge(result, rgba_image); Highgui.imwrite("mnt/sdcard/aaawatermark1/rgba.png", rgba_image);

Anybody help me will be appreciated.

Hi guys, I'm trying to convert image from jpeg format to png format. I'm also trying to apply Alpha on image so png save imag must be with alpha channel. I am not able to execute this(result.push_back<mat>(mask);) line in the code successfully.

Mat jpegImageMat = Highgui.imread("mnt/sdcard/aaawatermark/bird.jpg"); Mat gray_image = new Mat(), mask = new Mat(), rgba_image = new Mat(); List<mat> result = new ArrayList<mat>(); Core.split(jpegImageMat, result); Imgproc.cvtColor(jpegImageMat, gray_image, Imgproc.COLOR_BGR2RGBA); Imgproc.threshold(gray_image, mask, 128, 255, Imgproc.THRESH_BINARY); result.push_back<mat>(mask); Core.merge(result, rgba_image); Highgui.imwrite("mnt/sdcard/aaawatermark1/rgba.png", rgba_image);

Anybody help me will be appreciated.

Hi guys, I'm trying to convert image from jpeg format to png format. I'm also trying to apply Alpha on image so png save imag must be with alpha channel. I am not able to execute this(result.push_back<mat>(mask);) line in the code successfully.

Mat jpegImageMat = Highgui.imread("mnt/sdcard/aaawatermark/bird.jpg");
Mat gray_image = new Mat(), mask = new Mat(), rgba_image = new Mat();
List<mat> List<Mat> result = new ArrayList<mat>();
ArrayList<Mat>();
Core.split(jpegImageMat, result);
Imgproc.cvtColor(jpegImageMat, gray_image, Imgproc.COLOR_BGR2RGBA);
Imgproc.threshold(gray_image, mask, 128, 255, Imgproc.THRESH_BINARY);
result.push_back<mat>(mask);
result.push_back<Mat>(mask);
Core.merge(result, rgba_image);
Highgui.imwrite("mnt/sdcard/aaawatermark1/rgba.png", rgba_image);
rgba_image);