Year: 2013
Type: article
Abstract: As digital cameras replace their film based predecessors, new techniques are required to convert raw sensor data into a more usable format.Color image demosaicing is used to interpolate sparse color channel information received from the sensor to produce a full color image.The ideal demosaicing algorithm would minimize complexity while maximizing quality, however, in reality trade-offs must be between complexity and quality.Typically an image is demosaiced into a red-green-blue (RGB) color-space and then transformed into an alternate color-space such as YCbCr.The YCbCr color-space separates the image into a luminance channel, Y, and two chrominance channels, Cb and Cr, which is useful for image processing tasks, such as compression.The chrominance channel of the YCbCr image is often subsampled to reduce the amount of data processed without significantly impacting the perceived image quality.This is possible because the human visual system has a lower sensitivity to high frequency chrominance information compared to high frequency luminance information [1].A common form of the YCbCr format with subsampled chrominance is YCbCr 4:2:0, which consists of one Cr and one Cb sample for every four luminance samples.iii I would like the thank all who have helped and supported, especially:• My family: For always supporting and encouraging me.
Author: Daniel C. Whitehead
Institution: University of Dayton
Language: English
Subfield: Computer Vision and Pattern Recognition
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2659389262