Title :
A new scheme for progressive image transmission and flexible reconstruction with DCT
Author :
Xing, Minqing ; Yang, Xue Dong
Author_Institution :
Dept. of Comput. Sci., Regina Univ., Sask., Canada
Abstract :
This paper introduces a new scheme for image coding, transmission, and reconstruction using DCT. Instead of coding the DCT coefficients in increasing frequency order, this new scheme employs a sorting index which is a weighted sum of both frequency and the energy of the corresponding frequency band. The new scheme allows image details to be transmitted at an earlier stage, resulting in improved image quality. Flexible reconstruction of subimages is also discussed
Keywords :
discrete cosine transforms; image coding; image reconstruction; transform coding; visual communication; DCT; flexible reconstruction; image coding; image quality; progressive image transmission; sorting index; subimages; weighted sum; Discrete cosine transforms; Frequency; Humans; Image communication; Image reconstruction; Image storage; Karhunen-Loeve transforms; Teleconferencing; Transform coding; Video compression;
Conference_Titel :
WESCANEX 95. Communications, Power, and Computing. Conference Proceedings., IEEE
Conference_Location :
Winnipeg, Man.
Print_ISBN :
0-7803-2725-X
DOI :
10.1109/WESCAN.1995.493971
