Client-side computer vision

Find the geometry
inside any image.

Upload a photo or capture a frame. A real Hough pipeline finds its lines and circles, then builds triangles and rectangles from the strongest edges.

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Drop an image here

PNG, JPG or WebP · up to 20 MB

Upload, drop or capture a frame.

Choose one family or scan for all.

All shapesAutomatic scan LinesLinear Hough CirclesCircular Hough Triangles3 line groups Rectangles4 line groups

Adjust what counts as a shape.

Sensitivity62 Raise this to include softer, lower-contrast edges. Minimum size10% Filters out shapes smaller than this part of the image.

Preview Overlay Edge map

Processing and export happen locally. This page makes no image upload request.

Under the hood

The detector works at a preview resolution for speed, then maps every result back onto the export image.

01
Trace the edges
A Gaussian blur and Canny-style gradient pass turn colour pixels into a clean edge map.
02
Vote in Hough space
Edge points vote for likely lines and circle centres. Strong, distinct peaks become candidates.
03
Build & export
Line intersections form triangles and rectangles; the selected view is drawn into a local PNG.