| Summary: | 碩士 === 國立臺灣大學 === 資訊網路與多媒體研究所 === 96 === Digital camera systems often produce undesired result when working with improper light conditions such as dim light, side light, and back light. Images captured at those environments often tend to deteriorate the subject appearance. The details of dark region are too obscure to be recognized, and it will not be a happy experience when these faults happen on the subject.
We enhance the image quality by adjusting the brightness of the image by applying log curve to each pixel, and then we reduce the brightness with amount proportional to each pixel’s brightness value of original image. Our results show that we can light up the dark regions, meanwhile, keep the bright regions from being overexposure.
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