DCT-based a new approach of improving image coder performance using the spatial reconstructing noise shaping

Author

Chunning, Wang ; Yong, Duan

Author_Institution

Xidian Univ., Xi´´an, China

Volume

2

fYear

1996

fDate

14-18 Oct 1996

Firstpage

1022

Abstract

A modification of the DCT based coding system is proposed that allows to suppress the reconstruction noise in the frequency bands where it is less visible. The modified coder is compatible with the standard DCT system. A 1-D noise feedback filter is proposed which has been designed from the human visual system. The result shows that with noise feedback, the quantization noise can be flexibly controlled. Our method does not require any modification at the decoder. Therefore, it can easily be incorporated into a coder for any of the existing DCT-based standards (JPEG, H.261, MPEG)

Keywords

circuit feedback; discrete cosine transforms; image coding; image reconstruction; interference suppression; noise; telecommunication standards; transform coding; 1D noise feedback filter; DCT based coding system; DCT-based standards; H.261; JPEG; MPEG; image coder performance; modified coder; quantization noise; reconstruction noise; Code standards; Decoding; Discrete cosine transforms; Feedback; Filters; Frequency; Humans; Image reconstruction; Quantization; Visual system;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing, 1996., 3rd International Conference on

Conference_Location

Beijing

Print_ISBN

0-7803-2912-0

Type

conf

DOI

10.1109/ICSIGP.1996.566265

Filename

566265