DocumentCode
430891
Title
A modified hybrid DCT-SVD image-coding system
Author
Wongsawat, Y. ; Ochoa, H. ; Rao, K.R.
Author_Institution
Dept. of Electr. Eng., Texas Univ., Arlington, TX, USA
Volume
A
fYear
2004
fDate
21-24 Nov. 2004
Firstpage
335
Abstract
This paper proposes a hybrid image-coding system that combines the DCT and the SVD. A criterion based on the standard deviation of 8×8 blocks of an image is used to choose between DCT and SVD. The DCT is used to transform the high correlated blocks of the image, while the SVD is used to transform the low correlated blocks. The AMVQ is used to encode the eigenvectors of the blocks encoded using the SVD and the uniform quantization is used to encode the DCT coefficients. The simulation results show good image quality at low bit rates.
Keywords
block codes; discrete cosine transforms; image coding; quantisation (signal); singular value decomposition; block code; eigenvector; hybrid DCT-SVD image-coding system; uniform quantization; Bit rate; Discrete cosine transforms; Eigenvalues and eigenfunctions; Image coding; Image quality; Image reconstruction; Matrix decomposition; Vector quantization; Video compression; Videoconference;
fLanguage
English
Publisher
ieee
Conference_Titel
TENCON 2004. 2004 IEEE Region 10 Conference
Print_ISBN
0-7803-8560-8
Type
conf
DOI
10.1109/TENCON.2004.1414425
Filename
1414425
Link To Document