Reduction of block-transform image coding artifacts by using local statistics of transform coefficients

1 January 1997

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Signal Processing Letters

Vol. 4 (1) , 5-7
https://doi.org/10.1109/97.551686

Abstract

This letter presents a new approach to reduce coding artifacts in transform image coding. We approach the problem in an estimation of each transform coefficient from its quantized version with its local mean and variance. The proposed method can significantly reduce coding artifacts of low bit-rate coded images, and at the same time guarantee that the resulting images satisfies the quantization error constraint.

Keywords

This publication has 4 references indexed in Scilit:

Regularized reconstruction to reduce blocking artifacts of block discrete cosine transform compressed images
IEEE Transactions on Circuits and Systems for Video Technology, 1993
Reduction of coding artifacts in transform image coding
Published by Institute of Electrical and Electronics Engineers (IEEE) ,1993
Iterative procedures for reduction of blocking effects in transform image coding
IEEE Transactions on Circuits and Systems for Video Technology, 1992
Nonlinear space-variant postprocessing of block coded images
IEEE Transactions on Acoustics, Speech, and Signal Processing, 1986