Prewitt¶
描述
This effect/filter applies the Prewitt[1] operator to the input video stream. It detects edges (discrete differentiation operator) and, in the default settings, colors them white and pinkish. Compare Kirsch, Roberts and Sobel effects.
參數
參數 |
數值 |
描述 |
|---|---|---|
Planes |
選取 |
Set which planes will be processed, unprocessed planes will be copied. |
縮放 |
整數 |
Set value which will be multiplied with filtered result |
Delta |
整數 |
Set value which will be added to filtered result |
可以使用以下選項：
Planes
無 |
|
Y (Luminance) |
|
U (Chroma red-diff) |
|
YU |
|
V (Chroma blue-diff) |
|
YV |
|
UV |
|
All |
預設 |
Alpha |