Perceptual quality metric of color quantization errors on still images

Stephane Pefferkorn; Jean-Louis Blin

doi:10.1117/12.320113

17 July 1998 Perceptual quality metric of color quantization errors on still images

Stephane Pefferkorn, Jean-Louis Blin

Proceedings Volume 3299, Human Vision and Electronic Imaging III; (1998) https://doi.org/10.1117/12.320113
Event: Photonics West '98 Electronic Imaging, 1998, San Jose, CA, United States

Abstract

A new metric for the assessment of color image coding quality is presented in this paper. Two models of chromatic and achromatic error visibility have been investigated, incorporating many aspects of human vision and color perception. The achromatic model accounts for both retinal and cortical phenomena such as visual sensitivity to spatial contrast and orientation. The chromatic metric is based on a multi-channel model of human color vision that is parameterized for video coding applications using psychophysical experiments, assuming that perception of color quantization errors can be assimilated to perception of supra-threshold local color-differences. The final metric is a merging of the chromatic model and the achromatic model which accounts for phenomenon as masking. The metric is tested on 6 real images at 5 quality levels using subjective assessments. The high correlation between objective and subjective scores shows that the described metric accurately rates the rendition of important features of the image such as color contours and textures.

Citation Download Citation

Stephane Pefferkorn and Jean-Louis Blin "Perceptual quality metric of color quantization errors on still images", Proc. SPIE 3299, Human Vision and Electronic Imaging III, (17 July 1998); https://doi.org/10.1117/12.320113

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available