Review of data segmentation in reverse engineering based on layer image

Reverse engineering based on layer image is a hot point of research all over the world. This paper summarizes the technology of data segmentation, including edge tracking, extracting the geometrical features,contour recognition and contour matching.Some typical methods are introduced in detail. The main idea and characteristics of them are analyzed.The advantages and limitations of these methods are listed as well.Finally,possible future work is discussed.