Title :
Digital representation and storage of high quality color images by anisotropic enhancement and subsampling
Author :
Algazi, V.R. ; Ford, G.E. ; Hildum, E.
Author_Institution :
Center for Image Process. & Integrated Comput., California Univ., Davis, CA, USA
Abstract :
The application of novel anisotropic filter design techniques based on properties of human vision to the processing of luminance and chrominance components of color images is considered. Applied independently, these anisotropic filters can be used for the sequential digital representation of images by subsampling. By using them with two-dimensional quadrature modulation of chrominance signals, they led to a novel scheme for color composite images in which the skewing of energy due to the anisotropy of the filters improves the juxtaposition of luminance and chrominance in the two-dimensional frequency domain. It is found that the image quality is substantially better than that of NTSC images for either sequential or composite techniques
Keywords :
encoding; filtering and prediction theory; picture processing; two-dimensional digital filters; anisotropic enhancement; anisotropic filter; chrominance; composite images; high quality color images; human vision; image coding; image storage; luminance; sequential digital representation; subsampling; two-dimensional frequency domain; two-dimensional quadrature modulation; Anisotropic filters; Anisotropic magnetoresistance; Color; Digital images; Frequency domain analysis; Humans; Image coding; Image quality; Image storage; TV;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1989. ICASSP-89., 1989 International Conference on
Conference_Location :
Glasgow
DOI :
10.1109/ICASSP.1989.266812
