| Effects > Colors > Grayscale |
 | Grayscale |
The Grayscale filter allows you to convert the image into a grayscale image. There are 256 shades of gray. Each pixel is a weighted average of the red, green, and blue components:
A simple average of the colors is (red + green + blue) / 3
A weighted average in common use is (3 * red + 4 * blue + 2 * green) / 9
NTSC and PAL uses 0.299 * red + 0.587 * green + 0.114 * blue
BT.709 uses 0.2125 * red + 0.7154 * green + 0.0721 * blue. |
|
| 1. | Do one of the following: |
|
 | | Choose Effects > Colors > Grayscale |
| | | Click the Grayscale button | | |
|
|
| 2. | Use the following options: |
 |
 | | Red (%) |
|
|
This option allows you to specify the percentage of the red channel to use in the grayscale conversion.
Min = 0, Max = 100, Default = 21.
|
|
|
| | Green (%) |
|
|
This option allows you to specify the percentage of the green channel to use in the grayscale conversion.
Min = 0, Max = 100, Default = 72.
|
|
|
| | Blue (%) |
|
|
This option allows you to specify the percentage of the blue channel to use in the grayscale conversion.
Min = 0, Max = 100, Default = 7.
|
|
|
| | Strength (%) |
|
|
This option allows you to specify the strength of the filter.
Min = 0, Max = 100, Default = 100.
|
|
|
| Using Preview Windows | | Favorites and History | |
|
|
|
|