Title :
Refinements in Adaptive Quantization for Images Using the New Universal Quality Index
Author :
Mahoney, Robert A. ; Morales, Aldo
Author_Institution :
Electr. Eng. Program, Penn State Univ. at Harrisburg, Middletown, PA
Abstract :
This paper expands new research in adaptive DCT quantization for images using perceptual distortion control and the newly defined universal quality index with the goal of reducing blocking artifacts at low bit-rates. Results obtained show that this method converges and it does not need carefully calibrated viewing conditions.
Keywords :
discrete cosine transforms; image coding; image denoising; adaptive DCT quantization; adaptive image quantization; blocking artifact reduction; perceptual distortion control; universal quality index; Adaptive control; Color; Discrete cosine transforms; Flowcharts; Gray-scale; Image coding; Iterative algorithms; Programmable control; Quantization; Size control;
Conference_Titel :
Consumer Electronics, 2007. ICCE 2007. Digest of Technical Papers. International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
1-4244-0763-X
Electronic_ISBN :
1-4244-0763-X
DOI :
10.1109/ICCE.2007.341519
