Authors : Dev. R. Newlin and Elwin Chandra Monie
Abstract: Demosaicing is a process of obtaining a full color image by interpolating the missing colors of an image captured from a digital still and video camera that use a single-sensor array. To compress the demosaiced images, conversion from RGB to YCbCr format is required. This is a method in which a non adaptive interpolation is used to reduce the complexity of the technique which directly produces YCbCr format from mosaic image, i.e., raw single sensor array digital camera image. During computation of chrominance samples, the green channel is omitted to reduce the complexity because the green channel has minimal impact on the quality of chrominance channels. This technique saves considerable computational complexity by avoiding the need for performing demosaicing in RGB space and then converting from RGB to YCbCr 4:1:1. As compared with the recent demosaicing algorithms, the proposed algorithm produces the best demosaicing performance in YCbCr format with respect to mean square error. This approach outperforms other methods in-terms of no of operations per pixel.
Dev. R. Newlin and Elwin Chandra Monie, 2019. Low Complexity Demosaicing Directly Producing YCbCr 4:1:1 Output. International Journal of Signal System Control and Engineering Application, 12: 105-109.