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arXiv · 1802.02647

SCK: A sparse coding based key-point detector

Thanh Hong-Phuoc·Yifeng He·Ling Guan
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Abstract

All current popular hand-crafted key-point detectors such as Harris corner, MSER, SIFT, SURF... rely on some specific pre-designed structures for the detection of corners, blobs, or junctions in an image. In this paper, a novel sparse coding based key-point detector which requires no particular pre-designed structures is presented. The key-point detector is based on measuring the complexity level of each block in an image to decide where a key-point should be. The complexity level of a block is defined as the total number of non-zero components of a sparse representation of that block. Generally, a block constructed with more components is more complex and has greater potential to be a good key-point. Experimental results on Webcam and EF datasets [1, 2] show that the proposed detector achieves significantly high repeatability compared to hand-crafted features, and even outperforms the matching scores of the state-of-the-art learning based detector.

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Thanh Hong-Phuoc, Yifeng He, Ling Guan. 2018-02-07. SCK: A sparse coding based key-point detector. https://doi.org/10.1109/icip.2018.8451829

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