Dynamic range enhancement imaging in laser interferometry

Abstract

In this paper, a novel technique to enhance the dynamic range of images acquired in a laser interferometer is presented. The irradiance of the interferometric signal received by the camera, in a Michelson interferometer, is controlled at pixel level using a spatial light modulator. It is shown that this technique increases the signal to noise ratio, hence improving the vertical resolution of interferometer systems.

Three-dimensional measurement with reflection suppression based on high-dynamic range images

“…It can achieve better measurement results for different scenes. Babaie and Farahi 8 and Babaie 9 put forward a reflection elimination method by controlling the projection fringe intensity based on feedback. It can get high-dynamic range stripes.…”