A hybrid DWT-SVD image-coding system (HDWTSVD)

Author

Ochoa, Humberto ; Rao, K.R.

Author_Institution

Univ. Autonoma de Ciudad Juarez, Chihuahua

Volume

2

fYear

2003

fDate

30-30 Dec. 2003

Firstpage

532

Abstract

In this paper, the authors proposed the HDWTSVD system to encode both monochromatic and color images. Before encoding the color images, the color components (RGB) are transformed into YCbCr. Cb and Cr components are downsampled by a factor of two, both horizontally and vertically, before sending them through the encoder. If the input is a monochromatic image, only one frame (luminance) is encoded. A criterion based on the average standard deviation of 8times8 subblocks of the Y component is used to choose DWT or SVD for all the components. Standard test images are compressed based on the proposed system

Keywords

discrete wavelet transforms; image coding; singular value decomposition; vector quantisation; color images; discrete wavelet transform; encoding; hybrid DWT-SVD; image coding system; monochromatic images; singular value decomposition; vector quantization; Bandwidth; Color; Data compression; Discrete wavelet transforms; Filter bank; Image coding; Image storage; Signal processing algorithms; Singular value decomposition; Vector quantization; Discrete wavelet transform; HCRIOT; singular value decomposition; vector quantization;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2003 IEEE 46th Midwest Symposium on

Conference_Location

Cairo

ISSN

1548-3746

Print_ISBN

0-7803-8294-3

Type

conf

DOI

10.1109/MWSCAS.2003.1562341

Filename

1562341