Title :
Color constancy in the compressed domain
Author :
Mukhopadhyay, Jayanta ; Mitra, Sanjit K.
Author_Institution :
Dept. of Comput. Sci. & Eng., Indian Inst. of Technol., Kharagpur, India
Abstract :
This paper considers different algorithms for solving the color constancy problem in the block DCT domain. New algorithms in this domain have been proposed by exploiting the advantage of smaller data size and the better chromatic separation of Y-Cb-Cr color space (as used in the JPEG standard) against the R-G-B color space of the spatial domain. These make them faster and less memory intensive compared to their equivalent ones in the spatial domain without any significant degradation of the quality of the results.
Keywords :
data compression; discrete cosine transforms; image coding; image colour analysis; DCT domain; JPEG standard; R-G-B color space; Y-Cb-Cr color space; color constancy; compressed domain; Cameras; Discrete cosine transforms; Image coding; Image sensors; Layout; Lighting; Optical sensors; Optical surface waves; Reflectivity; Transform coding; Color Constancy; Discrete Cosine Transform (DCT); Spectral Power Density (SPD); Y-Cb-Cr color space;
Conference_Titel :
Image Processing (ICIP), 2009 16th IEEE International Conference on
Conference_Location :
Cairo
Print_ISBN :
978-1-4244-5653-6
Electronic_ISBN :
1522-4880
DOI :
10.1109/ICIP.2009.5414325