An embedded system for face classification in infrared video using sparse representation

Antonio Saavedra M.; Jorge E. Pezoa; Payman Zarkesh-Ha; Miguel Figueroa

doi:10.1117/12.2274305

19 September 2017 An embedded system for face classification in infrared video using sparse representation

Antonio Saavedra M., Jorge E. Pezoa, Payman Zarkesh-Ha, Miguel Figueroa

Proceedings Volume 10396, Applications of Digital Image Processing XL; 103961N (2017) https://doi.org/10.1117/12.2274305
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

Abstract

We propose a platform for robust face recognition in Infrared (IR) images using Compressive Sensing (CS). In line with CS theory, the classification problem is solved using a sparse representation framework, where test images are modeled by means of a linear combination of the training set. Because the training set constitutes an over-complete dictionary, we identify new images by finding their sparsest representation based on the training set, using standard l₁-minimization algorithms. Unlike conventional face-recognition algorithms, we feature extraction is performed using random projections with a precomputed binary matrix, as proposed in the CS literature. This random sampling reduces the effects of noise and occlusions such as facial hair, eyeglasses, and disguises, which are notoriously challenging in IR images. Thus, the performance of our framework is robust to these noise and occlusion factors, achieving an average accuracy of approximately 90% when the UCHThermalFace database is used for training and testing purposes. We implemented our framework on a high-performance embedded digital system, where the computation of the sparse representation of IR images was performed by a dedicated hardware using a deeply pipelined architecture on an Field-Programmable Gate Array (FPGA).

Conference Presentation

Citation Download Citation

Antonio Saavedra M., Jorge E. Pezoa, Payman Zarkesh-Ha, and Miguel Figueroa "An embedded system for face classification in infrared video using sparse representation", Proc. SPIE 10396, Applications of Digital Image Processing XL, 103961N (19 September 2017); https://doi.org/10.1117/12.2274305

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