opencv_flood_fill · Flood fill

Floods from a seed point by similarity — selections and magic-wand behavior.

2026-07-12 · 1 min · mangoeffect

opencv_gamma_correct · Gamma correction

Power-law adjustment (out = in^gamma) — display matching and lifting shadows.

2026-07-12 · 1 min · mangoeffect

opencv_grabcut · GrabCut

Iterated graph-cut segmentation initialized by a rectangle or mask — the classic interactive cutout.

2026-07-12 · 1 min · mangoeffect

opencv_invert · Invert

Pixel inversion (255 - x): negatives and mask inversion.

2026-07-12 · 1 min · mangoeffect

opencv_sharpen · Sharpen

Classic unsharp-mask sharpening wrapped in one node.

2026-07-12 · 1 min · mangoeffect

opencv_watershed · Watershed

Classic watershed with a marker image to split touching objects.

2026-07-12 · 1 min · mangoeffect

video_reader · Read video

Reads video files frame by frame (mp4 / mov / avi …); each execution yields one frame.

2026-07-12 · 1 min · mangoeffect

video_writer · Write video

Encodes an incoming frame sequence into a video file (fourcc / fps / color configurable).

2026-07-12 · 1 min · mangoeffect

color_grade_bcs · Brightness/Contrast/Saturation

Brightness, contrast and saturation in a single node.

2026-07-11 · 1 min · mangoeffect

color_grade_curves · Curves

Master and per-channel curves described as control-point strings.

2026-07-11 · 1 min · mangoeffect