I building an APK that receive the image from my android device camera and process with OpenCV library. Just want to *convert the image to Gray scale, apply Gaussian Blur filter and run Canny Edge Detector.*
**My APK runs properly on android device, with no error instead. But it's don't return processed image, just the original.**
Here's my **onCameraFrame** class with image processing code:
public Mat onCameraFrame(CvCameraViewFrame inputFrame) {
Mat mRgba = new Mat();
Mat imgGray = new Mat();
Imgproc.cvtColor(inputFrame.rgba(), imgGray, Imgproc.COLOR_RGBA2GRAY);
Imgproc.GaussianBlur(imgGray, imgGray, new Size(5, 5), 2, 2);
Imgproc.Canny(imgGray, imgGray, 35, 75);
return imgGray;
I think my code isn't wrong, but i don't know how to return the edge detection image.
Someone knows how to help me?
Thanks!
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