Contourlet Based Image Compression for Wireless Communication in Face Recognition System

—This paper proposes to use Contourlet transform for image compression and feature extraction for wireless face recognition system. The properties of face images and face recognition techniques are incorporated into the design of wireless transmission for such a system. The reasons for utilizing contourlet transform are two-folded. Firstly, in face recognition, the edge information is crucial in deriving features, and the edges within a face image are not just horizontal or vertical. When the coefficients are transmitted through the fading channel, the reconstruction from the Stein-thresholded noisy coefficients by contourlet achieves less mean square error than by wavelet. Secondly, when the network resources limit the transmission of full-set coefficients, the lower band coefficients can serve as a scaled-down version of the face image, for a coarser face recognition as screening. A prioritized transmission of the coefficients take full advantage of the wireless channel. Simul...

• Type: Conference
• Year: 2008
• Where: ICC
• Authors: Yanjun Yan, Rajani Muraleedharan, Xiang Ye, Lisa Ann Osadciw
• Keywords: Communications, Face Image, Face Recognition, ICC 2008, Wireless Face Recognition