Classical Segmentation2026-11-11computer‑visionsegmentationthresholdingotsuconnected‑componentswatershedmean‑shiftsuperpixelsslicgraph‑cutscrfdicejaccardcomp9517agenticSplitting an image into meaningful regions without a neural network: Otsu thresholding, connected components, the watershed, mean shift, SLIC superpixels, graph cuts, and the Dice and Jaccard scores that judge them.