Improved face recognition using super-resolution
Emil Bilgazyev, Boris Efraty, Shishir K. Shah, Ioannis A. Kakadiaris · 2011
Face recognition is a challenging task, especially when low-resolution images or image sequences are used. A de crease in image resolution typically results in loss of facial component details leading to a decrease in recognition rates. In this paper, we propose a new method for super resolution by first learning the high-frequency components in the facial data that can be added to a low-resolution in put image to create a super-resolved image. Our method is different from conventional methods as we estimate the high-frequency components, that are not used in other methods, to reconstruct a higher-resolution image, rather than studying the direct relationship between the high and low resolution images. Quantitative and qualitative results are reported for both synthetic and surveillance facial image databases.