Roberts

kdenlive-show-video Roberts

Status :

Maintained

Keyframes :

No

Source library :

avfilter

Source filter :

roberts

Available :

linux appimage windows apple

On Master only :

No

Known bugs :

No

Color depth :

10bit color-management

Tutorial :

No

Description

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.

Parameters

Parameter	Value	Description
Planes	Selection	Set which planes will be processed, unprocessed planes will be copied. Default is All.
Scale	Integer	Set value which will be multiplied with filtered result
Delta	Integer	Set value which will be added to filtered result

The following selection items are available:

Planes

None |
---|---
Y (Luminance) |
U (Chroma red-diff) |
YU |
V (Chroma blue-diff) |
YV |
UV |
All | Default
Alpha |

---

[[1]]

For more details refer to the Roberts Cross article in Wikipedia *[RGB]: Red, Green, Blue *[VFX]: Visual Effects *[feathering]: Smoothing or blurring the edges of a feature *[LFO]: Low-Frequency Oscillation *[dB]: decibel *[LUFS]: Loudness Units Full Scale *[AI]: Artificial Intelligence *[LLM]: Large Language Model *[HSV]: Hue, Saturation, Value *[SOP/Sat]: S(lope), O(ffset), P(ower) / SATuration *[CDL]: Color Decision List *[HSL]: Hue, Saturation, Lightness - Using HSL color space is useful for subtle color changes *[px]: pixel *[hh:mm:ss:ff]: hours:minutes:seconds:frames *[Hz]: Hertz