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The color filter array (CFA) is a cost-effective structure widely adopted in modern digital still cameras (DSC). Because some color information has been filtered out, interpolation process is required to retrieve the original image. In literature, bilinear interpolation is commonly used due to its simplicity. No cross-channel computations are necessary in bilinear interpolation. By taking into consideration...
Texts presented in video can provide important semantic information. In this paper, we propose an algorithm to detect texts from news videos. First, SPAC (spatial autocorrelation method) is used to determine the degree of texture rough-detail of video frames and determine candidate text regions based on texture rough-detail. Then Sobel operator is used to extract edges of candidate text regions, and...
In this paper, we consider the problem of recovering full-color images from color-sampled observation. Each pixel location is classified into flat, edge and pattern region and edge indicator function is used to avoid artifacts in high frequency regions and improve the performance. The horizontal and vertical direction of edge is decided using local statistics based on the concepts of spectral-spatial...
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