Patent ID: 6593965
Filing Date: 2003-07-15
Classification: H04N

Abstract:
A CCD pixel data interpolation circuit wherein pixel data read out from a CCD is filtered (thinned out), and stored in a video buffer; and within the time period of outputting the filtered (thinned out) pixel data from the CCD, the pixel data stored in the video memory is subjected to a pixel-interpolation operation;wherein the pixel-interpolation operation is performed by calculating according to distances from pixels used for pixel-interpolation operation; and wherein with four pixels as in the same group, a color component X00 involved in said same group is calculated using the following equations: X00=&agr;Â·X11+&bgr;Â·X21+&ggr;Â·X12+&dgr;Â·X22&agr;+&bgr;+&ggr;+&dgr;=1 where: X11 denotes a pixel with the same color as that of X00, which is included in the same group of X00; X21 denotes a pixel with the same color as that of X00, which is included in a neighboring group located in the vertical direction to the group of X00 after filtering (thinning out); X12 denotes a pixel with the same color as that of X00, which is included in a neighboring group located in the horizontal direction to the group of X00 after filtering (thinning out); and X22 denotes a pixel with the same color as that of X00, which is included in a neighboring group located in the diagonal direction to the group of X00 after filtering (thinning out).