Google this:
ColorMatrix threshold
Here is a link that may be useful:
http://keywon.com/wiki/index.php?title=ColorMatrix
Draw your bitmap (newBitmap) into a bitmap-backed canvas (c) that has
a ColorMatrixColorFilter set with a ColorMatrix that represents a so-
called 'threshold' filter (see
You should work on the array of pixel data directly.
This document may be helpful
http://www.3programmers.com/mwells/documents/pdf/Final%20Report.pdf
I don't think the comparison you are doing if (point Color.GRAY) is
valid since Bitmap pixels are ARGB data. I would expect to see code
bit
The title of the PDF is
Mobile Image Processing on the Google Phone
with the Android Operating System
by Michael T. Wells
On Apr 1, 4:55 pm, Kevin Huber kevin.hu...@gmail.com wrote:
You should work on the array of pixel data directly.
This document may be
I think I should have mentioned that I already had desaturated the
image. So the color comparison is correct.
On Apr 1, 5:55 pm, Kevin Huber kevin.hu...@gmail.com wrote:
You should work on the array of pixel data directly.
This document may be
On my N1, it was about 4x faster to use ColorMatrix.
Bitmap image =
BitmapFactory.decodeResource(this.getResources(),
R.drawable.testimage);
Paint paint = new Paint();
int width = image.getWidth();
int height = image.getHeight();
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