Translator Disclaimer
28 January 2008 Internet-based assessment of image sharpness enhancement
Author Affiliations +
Proceedings Volume 6808, Image Quality and System Performance V; 680812 (2008)
Event: Electronic Imaging, 2008, San Jose, California, United States
Two internet-based psychophysical experiments were conducted to investigate the performance of an image sharpness enhancement method, based on adjustment of spatial frequencies in the image according to the contrast sensitivity function and compensation of MTF losses of the display. The method was compared with the widely-used unsharp mask (USM) filter from PhotoShop. The experiment was performed in two locations with different groups of observers: one in the UK, and the second in the USA. Three Apple LCD displays (15" studio, 23" HD cinema and 15" PowerBook) were used at both sites. Observers assessed the sharpness and pleasantness of the displayed images. Analysis of the results led to four major conclusions: (1) Performance of the sharpening methods; (2) Influence of MTF compensation; (3) Image dependency; and (4) Comparison between sharpness perception and preference judgement at both sites.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Lindsay MacDonald and Samira Bouzit "Internet-based assessment of image sharpness enhancement", Proc. SPIE 6808, Image Quality and System Performance V, 680812 (28 January 2008);


Three bar resolution versus MTF how different can they...
Proceedings of SPIE (September 03 2008)
Image enhancement methods for the visually impaired
Proceedings of SPIE (September 24 2007)
Dynamics Of Pattern Vision
Proceedings of SPIE (December 28 1981)
Assessing the enhancement of image sharpness
Proceedings of SPIE (January 17 2006)

Back to Top