Performance comparison of various feature detector-descriptor combinations for content-based image retrieval with JPEG-encoded query images
We study the impact of JPEG compression on the performance of an image retrieval system for different feature detector-descriptor combinations. The VLBenchmarks retrieval framework is used to compare a total of 60 detector-descriptor combinations for a dataset with JPEG-encoded query images. Our results show that among all tested detectors, the Hessian-Affine detector leads to the most robust performance in the presence of strong JPEG compression. Additionally, we compare the retrieval gains of the different detector-descriptor pairs after processing the JPEG-encoded query images with different deblocking filters. The results illustrate that for the MSER, MFD and WαSH detectors, the retrieval results benefit from two of the deblocking approaches at low bit rate irrespective of what descriptor the detectors are combined with. The same two deblocking filters are found to increase the retrieval performance for the MROGH descriptor when combined with most of the tested detectors.