Portrait paper-cut generation method

Abstract

The invention discloses a portrait paper-cut generation method, which comprises the following steps: decomposing a portrait paper-cut according to five sense organs of a human body so as to respectively establish an eyebrow subtemplate library, an eye subtemplate library, a nose subtemplate library, a mouth subtemplate library and an outer contour subtemplate library; receiving an input image to obtain positioning coordinates of eyebrows, eyes, a nose, a mouth and an outer contour of a person in the input image; extracting feature regions of the input image according to the positioning coordinates, wherein each feature region corresponds to an image block; processing each image block by using an OSTU based dynamic threshold algorithm so as to generate a binary sequence of each image block; and computing the distance between each binary image in the binary sequence of the i(th) image block and a corresponding image block so as to find out a window size index number corresponding to a binary image with the minimum distance, and carrying out binarization processing on the input image by using a window size corresponding to the window size index number so as to obtain a binary image set. According to the invention, the artistic characteristics of paper-cuts are added into a portrait paper-cut algorithm, thereby ensuring the artistic properties of portrait paper-cuts.

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