DocumentCode :
2392848
Title :
An analog gamma correction method for high dynamic range applications
Author :
Cao, Yuan ; Bermak, Amine
Author_Institution :
Sch. of Electr. & Comput. Eng., Hong Kong Univ. of Sci. & Technol., Hong Kong, China
fYear :
2011
fDate :
26-28 Sept. 2011
Firstpage :
318
Lastpage :
322
Abstract :
In this paper, a flexible analog gamma correction technology has been proposed. In order to represent images on modern display systems with proper contrast, gamma correction is required to encode these input images. Conventional gamma corrections are performed in the digital domain. However, due to the limitation of the ADC resolution, the image quality with low level luminance is significantly degraded. In this proposed method, the adjustment of the implementation for the gamma correction in a design flow integrates this image processing with A/D conversion at the same time. By this approach, the quantization noise of the ADC is not amplified by gamma correction. Furthermore, the hardware area and power consumption can be reduced.
Keywords :
CMOS image sensors; display instrumentation; image representation; image resolution; quantisation (signal); A/D conversion; ADC resolution; analog gamma correction method; image coding; image processing; image quality; image representation; modern display systems; quantization noise; Water;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
SOC Conference (SOCC), 2011 IEEE International
Conference_Location :
Taipei
ISSN :
2164-1676
Print_ISBN :
978-1-4577-1616-4
Electronic_ISBN :
2164-1676
Type :
conf
DOI :
10.1109/SOCC.2011.6085112
Filename :
6085112
Link To Document :
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