使用局部強化的光線補償

Abstract

數位相機在現在已經取代傳統的軟片相機，其內建的功能也可以因各種環境與使用者需求而拍攝出更完美的照片。然而目前的數位相機在光源不足的情況下，可能會拍出背景曝光正常但是主體過暗，或是主體清晰但是背景過度曝光的問題。在許多應用上會希望主體能明亮清晰而且背景也不會過度曝光。本論文提出一個光源補償的方法來改善在不佳光源下的影像。

Digital camera often produces undesired result when working under improper light condition. The details of dark regions are too obscure to be recognized, and it would not be a good picture that the photographers wish. To solve the problem, we enhance the image with two phases. First we enhance the image by adjusting the brightness of the image; second we enhance the major details and the details in dark region to be more distinct. Our results show that we can light up the dark regions, and keep the bright regions from overexposure.