Roberts

This effect/filter applies the Roberts cross operator[1] to the input video stream. It detects edges (differential operator) and, in the default settings, colors them white and grainy. Compare Kirsch, Prewitt and Sobel effects.

The effect does not have keyframes.

Roberts effect

• Planes - Set which planes will be processed, unprocessed planes will be copied. Default is YUV.

• Scale - Set value which will be multiplied with filtered result

• Delta - Set value which will be added to filtered result

Notes

[1]

For more details refer to the Roberts Cross article in Wikipedia