I want to get the ARGB values from a pixel and convert to HSV and then set the pixel with the new values.
I don’t fully understand how to do that. Can anyone help me?
Let’s say you have a Bitmap object and x and y co-ordinates. You can get the color from the bitmap as a 32-bit value like this:
int color = bitmap.getPixel(x, y);
You can separate out the argb components like this:
int a = Color.alpha(color); int r = Color.red(color); int g = Color.green(color); int b = Color.blue(color);
Then you can convert to HSV like this:
float hsv = new float; Color.RGBToHSV(r, g, b, hsv);
Now you can manipulate the HSV values however you want. When you are done you can convert back to rgb:
color = Color.HSVToRGB(hsv);
or like this is you want to use the alpha value:
color = Color.HSVToRGB(a, hsv);
Then you can write the color back to the bitmap (it has to be a mutable Bitmap):
bitmap.setPixel(x, y, color);