Image Reconstruction Research on Color Filter Array

According to the physical structure of color image sensor in camera, cameras acquire images using image sensors overlaid with a color filter array (CFA) from different channels filters, so we can only achieve a single color component at each pixel position. In order to reconstruct a color image, color demosaicing is required to reconstruct the other two color components. General interpolation method may blur the image edge and introduce visible artifacts near edges. An image reconstruction algorithm based on adaptive region demosaicing is put forward in Bayer format to reduce the color artifacts. Experiment results show that the algorithm can improve the image quality and PSNR, sharpen texture and edge of the image and enhance image quality. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of Harbin University of Science and Technology