Hello...I am trying to develop a template matching android application, I am using the Camera API preview; how can I get the template image (crop it) and save it ? do I need a database to save template images ? or just save them to a specific folder? Thanks in advance.
private PictureCallback mPicture = new PictureCallback() {
@Override
public void onPictureTaken(byte[] data, Camera camera) {
Log.d("EyeSeeJD", "on picture taken starts ");
jpegData = new Mat(1, data.length, CvType.CV_8UC1);
jpegData.put(0, 0, data);
Mat bgrMat = Highgui.imdecode(jpegData, Highgui.IMREAD_COLOR);
Imgproc.resize(bgrMat, bgrMat, new Size(620, 344));
Imgproc.cvtColor(bgrMat, bgrMat, Imgproc.COLOR_BGR2GRAY);
Imgproc.GaussianBlur(bgrMat, bgrMat, new Size(15, 15), 1, 0);
Imgproc.equalizeHist(bgrMat, bgrMat);
Imgproc.Canny(bgrMat, bgrMat, 100, 200);
MatOfByte matOfByte = new MatOfByte();
// encoding to png, so that your image does not lose information
// like with jpeg.
Highgui.imencode(".png", bgrMat, matOfByte);
byte[] byteArray = matOfByte.toArray();
System.out.println();
File pictureFile = getOutputMediaFile(MEDIA_TYPE_IMAGE);
Log.d("EyeSeeJD", "file get media file ");
if (pictureFile == null) {
Log.d("EyeSeeJD",
"Error creating media file, check storage permissions ");
return;
}
try {
Log.d("EyeSeeJD", "File try save ");
FileOutputStream fos = new FileOutputStream(pictureFile);
fos.write(byteArray);
fos.close();
Log.d("EyeSeeJD", "File saved ");
} catch (FileNotFoundException e) {
Log.d("EyeSeeJD", "File not found: " + e.getMessage());
} catch (IOException e) {
Log.d("EyeSeeJD", "Error accessing file: " + e.getMessage());
}
mCamera.startPreview();
Log.d("EyeSeeJD", "start view after saving * ");
}
};
