Photo trail v1
Ribbons of colour pulled out of the photo itself sweep toward the edges and slide behind the bird, which a segmentation mask keeps sharp on top.
A rainbow lorikeet holds still while two ribbons of its own plumage stream off to either side, as if the picture's paint had been dragged. The ribbons pass behind the bird — its cut-out is drawn back on top — and draggable handles set where each ribbon is born and how it bends, while clicking the photo picks or unpicks the subject zones.
Each ribbon begins as a one-pixel-tall strip of colours sampled across a band laid over the photo; the band's length is the ribbon's width, so it can take just the body and leave the head out. That strip is stamped slice by slice along a spine that either integrates an eased heading (a clean swoosh with no control points) or rounds two guide handles with Chaikin corner-cutting, each slice rotated to the local tangent, scaled by a taper profile, and overlapped a little more on tight turns so the ribbon never cracks. The subject comes from MediaPipe's interactive segmenter — one mask per clicked focus point, feathered into a single cut-out.
