Title :
Pyramidal coding of super high definition images
Author :
Wang, Q. ; Ghanbari, M. ; Pearson, D.E. ; Clark, A.F.
Author_Institution :
Essex Univ., Colchester, UK
Abstract :
This paper first analyses the differences between SHD and lower-resolution images in terms of human visual system (HVS) responses to the images spatial frequencies. The coding of SHD images by the Laplacian pyramid and the DCT pyramid using HVS-based quantization is then described, with the test image coded at good quality with 0.5 bpp and perceptually transparent at 1 bpp, viewed at one picture height (1H)
Keywords :
discrete cosine transforms; image coding; image resolution; image sequences; quantisation (signal); visual perception; DCT pyramid; Laplacian pyramid; image sequences; lower-resolution images; pyramidal coding; quantization; spatial frequencies; super high definition images; test image;
Conference_Titel :
Image Processing and its Applications, 1995., Fifth International Conference on
Conference_Location :
Edinburgh
Print_ISBN :
0-85296-642-3
DOI :
10.1049/cp:19950619
