GLOBAL JOURNAL OFENGINEERINGSCIENCE ANDRESEARCHES A NOVEL PIPELINED ADAPTIVE EDGE ENHANCED COLOR DEMOSAICING SCHEME FOR VLSI ARCHITECTURE

Most digital cameras capture imagery with a color filter array (CFA), sampling only one color value for each pixel, afterwards interpolating other two missing color values. This interpolation process is known as demosaicing. In this paper, pipelining concept is introduced to increase the processing speed of the color interpolation algorithm. The proposed algorithm consists of pipelining stages along with an edge detector, an anisotropic weighting model, and a filter based compensator. The edge detector is used to discover the edge information in the images; an anisotropic weighting model is designed to catch more information from the horizontal direction than vertical direction. The filter based compensator includes laplacian and spatial sharpening filter which are used to reduce the blurring effect and improve the edge information. The hardware cost is reduced by using hardware sharing and re-configurable design techniques. When compared with previous low complexity techniques, this paper performs good performance, high speed, low memory requirements, low cost and better quality. Keywords- Color filter array, Color interpolation, edge detector, demosaicing, Laplacian sharpening filter.. I