多边形，剪裁，种子法填充，改进划线的方法-Polygon, cutting, Seed Law to fill, improve the method of drawing a line.

关于提取连通域的两种方法，一种是基于种子法另外一种是二次扫描法-About extraction of connected components of two methods, one is based on a seed law is another secondary scanning

九张机，大曲，在《乐府雅词》中有两词，并收录入《钦定词谱》，有据可依的仅有此两词。 此体有两种格式，一种为前后有口号，整曲共十一首。一种为前后无口号整曲有九首。有口号者，为正格。 后人多有效仿，而很多格律不端，因《乐府雅词》仅收录两首，故格律无别所效。(Nine machines, two words in Daqu, "Yuefu elegance", and recorded "James poems", according to the only t