Sharpening Method for High-speed High-resolution Image Captured with Phase-shift Photographing

Abstract

This paper describes an improvement of our proposed pseudo-high-speed high-resolution photographing method. We have been developing the method by using phase-shift photographing with a typical consumer camera instead of using an industrial high-speed camera whose installation cost is much higher than that of the consumer camera. In our previous work, we confirmed our method enables high-speed photographing even using the consumer camera. However, due to the weakness of an image sensor, shutter speed could not be increased, and then motion blur appeared in the captured image. Even if the shutter speed can be increased, captured images are so dark not enough to recognize a target object. In this paper, we solve this problem by overlaying multiple images captured at the same phase timing.