Title :
A visibility model for quality assessment of dimmed images
Author :
Huang, Tai-Hsiang ; Kao, Chen-Tai ; Yi-Chia Chen ; Yeh, Su-Ling ; Chen, He Henry
Author_Institution :
Grad. Inst. of Commun. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
Dimming the backlight of a liquid crystal display (LCD) reduces the dynamic range and intensity of a displayed image and hence has a profound impact on the perceived image quality. To reflect the actual degradation of image quality perceived by human eye, we take visibility in addition to contrast into account and develop a visibility model for image quality assessment. The proposed visibility model also considers factors related to the display and the ambient light to accommodate the viewing condition. Experimental results are shown to demonstrate the performance of the proposed model.
Keywords :
liquid crystal displays; LCD; ambient light; human eye; image dimming; image intensity; image quality assessment; image quality degradation; liquid crystal display; visibility model; Computational modeling; Dynamic range; Humans; Image quality; Sensitivity; Visualization; Image quality assessment; dim backlight;
Conference_Titel :
Quality of Multimedia Experience (QoMEX), 2012 Fourth International Workshop on
Conference_Location :
Yarra Valley, VIC
Print_ISBN :
978-1-4673-0724-6
Electronic_ISBN :
978-1-4673-0725-3
DOI :
10.1109/QoMEX.2012.6263872
