Comparison of perceptually uniform quantisation with average error minimisation in image transform coding

作     者：Malo, J Ferri, FJ Albert, J Soret, J 

作者机构：Univ Valencia E-46100 Valencia Spain 

出 版 物：《ELECTRONICS LETTERS》 (电子学快报)

年 卷 期：1999年第35卷第13期

页      面：1067-1068页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

主　　题：maximum perceptual error restriction transform coding Image and video coding minimisation image transform coding image coding quantisation (signal) perceptually uniform quantisation transform coder design criterion Signal processing theory average error minimisation coding errors Computer vision and image processing techniques 

摘      要：An alternative transform coder design criterion based on restricting the maximum perceptual error of each coefficient is proposed. This perceptually uniform quantisation of the transform domain ensures that the perceptual error will be below a certain limit regardless of the particular input image. The results show that the proposed criterion improves the subjective quality of the conventional average error criterion even if it is weighted with the same perceptual metric.