1. The Image The pixels in the image The mask The resulting image 255 X
The Image
The pixels in the image X
1/3
The mask
The resulting image

2. The Image The pixels in the image The mask The resulting image 255 170
1/3
The Image
The pixels in the image
170 X
0 x /3 x x 255 +
0 x 0 + 1/3 x x 0 = 170
The mask
The resulting image

3. The Image The pixels in the image The mask The resulting image 255 170
1/3
The Image
The pixels in the image
170 85 X
0 x /3 x x 255 +
0 x 0 + 1/3 x x 0 +
0 x /3 x x 255 = 85
The mask
The resulting image

4. The Image The pixels in the image The mask The resulting image 255 170
1/3
The Image
The pixels in the image
170 85
0 x 0 + 1/3 x 0+ 0 x 0+
0 x 0+ 1/3 x 0+ 0 x 0+
0 x /3 x x 255= 85
The mask
The resulting image