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Annotator-CannyEdge — Annotation AI Model

Canny edge detection, classical OpenCV — white outlines on black, with low and high thresholds tuning what survives. No neural net, so it runs on CPU in under a second, and feeds ControlNet Canny directly.

Details

  • CategoryAnnotation
  • Year2022
  • LicenseApache-2.0

Inputs & Outputs

ImageInputimage

Source image to extract edges from. Works best on images with clear structural boundaries (architecture, objects, illustrations). RGB or RGBA accepted.

Edge MapOutputimage

Canny edge map: white edges on black background, same resolution as input. Feed directly into ControlNet-XL-Canny or ControlNet-XL-Union (canny mode).

Parameters

low_thresholdintegerdefault 100range 0–255

Low threshold (0-255)

Minimum gradient magnitude to consider as an edge candidate (hysteresis lower bound). Lower values detect more edges including weak ones. Default 100. Raise for cleaner, fewer edges on noisy inputs.

high_thresholdintegerdefault 200range 0–255

High threshold (0-255)

Gradient magnitude above which a pixel is definitely an edge (hysteresis upper bound). Default 200. Edges between low and high thresholds are kept only if connected to a strong edge. Lower for more aggressive edge inclusion.

Tags

  • annotator
  • canny
  • edge-detection
  • preprocessing
  • controlnet
  • cpu
  • apache-2.0
  • no-gpu

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