Title :
A block shifting method for reduction of blocking effects in subband/wavelet image coding
Author :
Wu, Po-Cheng ; Chen, Liang-Gee ; Lai, Yeong-Kang
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
2/1/1998 12:00:00 AM
Abstract :
In this paper, we propose a new method to reduce blocking effects in subband/wavelet image coding. Unlike the traditional postprocessing approaches, by using the block shifting method, the blocks in different bands are coded with different shifting positions. After subband/wavelet reconstruction, the block edges of different bands can be separated to reduce blocking effects. The simulation results are demonstrated to verify the proposed method
Keywords :
image coding; image reconstruction; interference suppression; transform coding; wavelet transforms; block shifting method; blocking effects; reconstruction; shifting positions; subband image coding; wavelet image coding; Degradation; Digital signal processing; Discrete cosine transforms; Image coding; Image reconstruction; Motion compensation; Motion estimation; Pixel; Vector quantization; Wavelet transforms;
Journal_Title :
Consumer Electronics, IEEE Transactions on
