The thinning of the binary image has important application in target recognition.Zhangs fast parallel thinning algorithm is a kind of common thinning algorithm.Its thinning result maintains the connection of the original image
has a good structural form and has no burs.However it cant ensure the single pixel width
which brings difficulties for post-processing.In this paper
we make some improvement about Zhangs fast parallel thinning algorithm.Experimental results show that the results of the improved algorithm can not only ensure a single pixel width
but maintain the advantages of the original algorithm.