Chinese character framework inflection point detection methods and systems based on eight-neighborhood direction coding

The invention discloses two Chinese character framework inflection point detection methods and systems based on eight-neighborhood direction coding. The first measurement method comprises a preprocessing step, a stroke segment segmentation step, a stroke segment coding step and an inflection point detection step. The second measurement method comprises a preprocessing step, a stroke segment segmentation step, a stroke segment coding step, an inflection point judgment step and an inflection point detection step. According to the methods, unique rules of direction coding chains of different strokes of Chinese characters are fully considered, research and summarization are carried out on the basis of eight-neighborhood direction coding, main direction coding, legal direction coding and illegal direction coding of different types of stroke segments are given, a stroke segment corresponding to a direction code chain containing three or more different direction codes is determined to be a stroke segment containing