High resolution and high dynamic range image reconstruction from differently exposed images

Abstract

In this research, we propose a method to reconstruct image of high resolution and high dynamic range from small number of low resolution images with some saturated pixels. In this method the low resolution images are captured with different exposure times and at different positions and the high resolution image is created with reconstruction based super resolution processing. The position of the CCD sensor in the camera is controlled by a piezo actuator and at each capturing position the exposure time is also controlled in specific arrangement. And in the reconstruction method a high resolution image is recursively updated by comparing simulated low resolution images which are created from high resolution image with assumed optical degradation and its exposure time and the captured images. In this paper we first describe how to capture the low resolution images and how to create high resolution image from images which have some saturated pixels and next show the evaluation of the result image created from real captured images. © 2008 Springer Berlin Heidelberg.