Variable Exposure Time Imaging for Obtaining HDR Images

Abstract

In this paper, we propose a novel imaging method called variable exposure time imaging for obtaining HDR images from single image capture. In this method, we control exposure time pixel by pixel. Thus, each pixel in an image taken by this imaging method is obtained under different exposure time. We call this image variable exposure image. By using the variable exposure image, we can synthesize a high dynamic range image efficiently, since we can optimize the exposure time pixel by pixel according to the input intensity at each pixel. Experimental results from the proposed method show the efficiency of the proposed imaging method.