EL: Local Image Descriptor Based on Extreme Responses to Partial Derivatives of 2D Gaussian Function

Figure 6

Results reported in mAP(%) on three various tasks: patch verification, image matching, and patch retrieval obtained by different variants of EL, E, and L descriptors. Suffixes “s” and “r” in the descriptor names refer to descriptor normalization used by SIFT and RootSIFT. Dashed bar borders and  indicate ZCA projected and normalized features.