A Novel Key-Point Detector Based on Sparse Coding


Harris corner, MSER, SIFT and SURF are among the most common hand-crafted key-point detectors for detecting corners, blobs, or junctions in an image. Detectors' inflexibility might be attributed to the pre-designed character of these detectors un many circumstances. Non-uniform lighting also has a significant impact on these detectors' performance. There are some earlier efforts that have dealt with one of the two issues, but there is currently no effective approach for solving both at the same time. Here, we present a unique Sparse Coding Key-point detector (SCK) based on affine intensity change that is completely invariant to any specific structure. To find a crucial point in a picture, the detector uses a complexity measurement derived from the block surrounding the spot in question. For comparison and selection when the maximum number of key-points is limited, a strength measure is provided. It is shown in this work that the suggested detector has desired properties. On three publicly available datasets, the suggested detector demonstrates considerable performance in terms of repeatability and matching score.

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