Take a look at the first OpenCV android example to see how to get the grayscale image. Then use matToBitmap to get an android Bitmap object, where you use compress with appropriate arguments.
i found this code but it doesn't save the image after applying the grayscale .how changes should i make to save the gray image. and this the code : http://cs.ucsb.edu/~efujimoto/mobile/...
You see that part where it calls Utils.matToBitmap? That's where you use the compress function I linked, and pass in a FileOutputStream to the appropriate path.
Asked: 2016-02-25 09:55:52 -0600
Seen: 67 times
Last updated: Feb 25 '16
