DocumentCode
781107
Title
Preprocessing method for DCT-based image-compression
Author
Oizumi, Munenori
Author_Institution
Tsukuba Technol. Center, Texas Instrum., Tsukuba
Volume
52
Issue
3
fYear
2006
Firstpage
1021
Lastpage
1026
Abstract
This paper describes a preprocessing method for DCT-based image compression, which is independent of the compression process. The method predicts the likelihood that visible distortion appears at each location, and applies filtering accordingly. For prediction, an auto-correlation function is utilized as an index to estimate the distribution of the power spectrum. This process improves the image quality of the resulting compressed image by reducing the ringing distortions
Keywords
data compression; discrete cosine transforms; filtering theory; image coding; transform coding; DCT; auto-correlation function; filtering; image quality; image-compression; preprocessing method; visible distortion; Autocorrelation; Decoding; Discrete cosine transforms; Filtering; Image coding; Image quality; Noise reduction; Noise shaping; Shape; Transform coding;
fLanguage
English
Journal_Title
Consumer Electronics, IEEE Transactions on
Publisher
ieee
ISSN
0098-3063
Type
jour
DOI
10.1109/TCE.2006.1706502
Filename
1706502
Link To Document