Abstract
A modified algorithm based on image segmentation and merging is proposed and demonstrated to improve the accuracy of the phase unwrapping algorithm. There are three improved aspects. Firstly, the method of unequal region segmentation is taken, which can make the regional information to be completely and accurately reproduced. Secondly, for the condition of noise and undersampling in different regions, different phase unwrapping algorithms are used, respectively. Lastly, for the sake of improving the accuracy of the phase unwrapping results, a method of weighted stack is applied to the overlapping region originated from blocks merging. The proposed algorithm has been verified by simulations and experiments. The results not only validate the accuracy and rapidity of the improved algorithm to recover the phase information of the measured object, but also illustrate the importance of the improved algorithm in Traditional Chinese Medicine Decoction Pieces cell identification.
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