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High Resolution and High Dynamic Range Image Reconstruction from Differently Exposed Images
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High Resolution and High Dynamic Range Image Reconstruction from Differently Exposed Images
Hiroyuki Nakai28 , Shuhei Yamamoto28, Yasuhiro Ueda28 and Yoshihide Shigeyama28
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Production Technology Development Center, Production Technology Development Group, SHARP Corp, 2613-1, Ichinomoto-cho, Tenri, Nara 632-8567, Japan |
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.
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