A method of smoothing a series of speckle fringe patterns

摘要

The signal to noise ratio of speckle pattern is unity, so it is difficult to extract signal from a single speckle pattern. We have presented a method of smoothing speckle fringe patterns in big curve window. In this paper, a method of smoothing a series of speckle fringe patterns is proposed, basing on the upper method. For a series of speckle fringe patterns, the location of the fringe is changing continually. According to the feature, the smoothing is implemented with great efficiency and speed.