Title :
Reduction of blocking artifacts in block transformed compressed color images
Author :
Mateos, J. ; Ilia, C. ; Jimenez, B. ; Molina, R. ; Katsaggelos, A.K.
Author_Institution :
Dept. de Ciencias de la Comput. e Inteligencia Artificial, Granada Univ., Spain
Abstract :
We use the information in the chrominance bands to reconstruct color block transformed compressed images. For the luminance and the two chrominance channels, we define a reconstruction problem and show how to estimate the unknown hyperparameters and reconstruct each band automatically. The method is tested on real images
Keywords :
Bayes methods; brightness; data compression; discrete cosine transforms; image coding; image colour analysis; image reconstruction; parameter estimation; transform coding; JPEG; block DCT; block transformed compressed color images; blocking artifacts reduction; chrominance bands; hierarchical Bayesian approach; hyperparameters estimation; image model; image reconstruction; noise model; real images; Bayesian methods; Chromium; Color; Discrete cosine transforms; Frequency; Image coding; Image reconstruction; Image sampling; Parameter estimation; Testing;
Conference_Titel :
Image Processing, 1998. ICIP 98. Proceedings. 1998 International Conference on
Conference_Location :
Chicago, IL
Print_ISBN :
0-8186-8821-1
DOI :
10.1109/ICIP.1998.723511
