A single sensor provided with a color filter array (CFA) format looks like a mosaic image. Each pixel in the image contains a primary color, red, green and blue, arranged alternately. Most previous interpolation and zooming techniques for CFA image utilize the gradient and the spatial information of the neighborhood color pixels around the interpolation positions. However, their characteristics...

The ordered color filter arrays (CFA) used in single-sensor, color digital still cameras introduce distracting color artifacts. These artifacts are due to the phase-shifted, aliased signals introduced by the sparse sampling by the CFAs. This work reports the results of an investigation on the possibility of using random patterns as a CFA for single-sensor, digital still cameras. From a single b...

This paper presents a color demosaicing method applied to the Bayer pattern color filter array (CFA). Reliable estimation of an edge direction, edge-directed asymmetric interpolation, and the use of color samples at immediate neighbors are considered as the key guidelines for smooth and sharp image restoration. Also, special interest is directed to local areas that are rich in high spatial freq...