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<正>Despite rapid development in digital photography,what is cap- tured still often does not quite match what is perceived by the eye.This is particularly noticeable if the dynamic range of the scene is higher than what the imaging device is capable of capturing,in which case either detail in the shadows and/or highlight regions are lost.Anoth- er common scenario is under low light conditions where flash is not permitted,such as in a museum or at a concert,and one often ends up with a blurry or under-exposed photo.We present a multi-image processing system that registers a set of image sequence,extracts ap- propriate information from them,and forms a composite image with enhanced image quality that significantly exceeds the quality of each individual image.With our multi-image processing system,we ad- dress the problems of capturing images in scenes with low light and ex- tended dynamic range.We also apply oar solution to remove unwant- ed claster from multiple image capture.We illustrate the effectiveness of our methods with experimental results from the three cases.