The retrieval of the ceramic productions based on the pairwise geometric histogram

The paper mainly argues two questions, one is how to extract the feature of the ceramic productions based on the pairwise geometric histogram, and another is how to index and retrieval the ceramic productions. They are researched including the PGH-based shape coding, the prediction of the match cost, and the PGH-based retrieval. The PGH-based retrieval model of the ceramic productions is analyzed, proposed and applied to the ceramic retrieval experiment at last. The experimental results show that the PGH-based retrieval has the high retrieval accuracy to the same kind of target with different size or direction. It has a universal applicability.