Efficient shape matching using shape contexts
Giulio Mori, Serge Belongie, Jitendra Malik · IEEE Transactions on Pattern Analysis and Machine Intelligence · 2005
We demonstrate that shape contexts can be used to quickly prune a search for similar shapes. We present two algorithms for rapid shape retrieval: representative shape contexts, performing comparisons based on a small number of shape contexts, and shapemes, using vector quantization in the space of shape contexts to obtain prototypical shape pieces.