Find color blobs

VisionConfigured target requiredvision.find-color-blobs

Extract deterministic four-connected components from an RGB or HSV mask.

Example use

Find connected blobs in a color range, then inspect their areas or centers.

Node preview

Right-drag to pan and scroll to zoom. Expand inputs and edit parameters to see how ports change. This preview does not run the node; reopening the page restores the example.

Loading node preview…

Data inputs 4

Source imageimageImage: Image to analyze.
RequiredDefault: None
Color rangerangeColor range: Inclusive RGB or HSV channel bounds.
RequiredDefault: None
Value format examples
{"maximum":[255,80,80],"minimum":[220,0,0],"space":"rgb"}
{"maximum":[75,100,100],"minimum":[45,30,60],"space":"hsv"}
Analysis regionregionRegion: Ratio or pixel rectangle to scan.
Default availableDefault: {"height":1,"unit":"ratio","width":1,"x":0,"y":0}
Value format examples
{"height":0.5,"unit":"ratio","width":0.5,"x":0.25,"y":0.25}
Minimum areaminimum-areaInteger: Discard components smaller than this pixel count.
Default availableDefault: 1
Minimum: -9007199254740991
Maximum: 9007199254740991
Value format examples
0
42

Data outputs 1

Color blobsblobsColor blob: Components sorted by area, then vertical and horizontal position.

Version and node identity

Version 1.0.0

sha256:51b3f411db8bf45c901f854e4f94ddef66100ac6a2d15e98a4fc0290ffb4c266