Characterising local feature descriptors for face sketch to photo matching Online publication date: Tue, 27-Oct-2020
by Samsul Setumin; Shahrel Azmin Suandi
International Journal of Computational Vision and Robotics (IJCVR), Vol. 10, No. 6, 2020
Abstract: Sketch and photo are from a different modality. Inter-modality matching approach requires right feature representation to represent both images so that the modality gap can be neglected. Improper feature selection may result in low recognition rate. There are many local descriptors have been proposed in the literature, but it is unclear which descriptors are more appropriate for inter-modality matching. In this paper, we attempt to characterise local feature descriptors for face sketch to photo matching. Our evaluation for the characterisation uses cumulative match curve (CMC), and we compare seven different descriptors that are LBP, MLBP, HOG, PHOG, SIFT, SURF and DAISY. The evaluation focuses only on a viewed sketch. Based on the experiments, we observed that gradient-based descriptors gave higher accuracy as compared to the others. Out of five popular distance metrics evaluated, L1 gives a better result as compared to the other similarity distance measures.
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