摘要
用矢量对图像图形进行描述,对于图形比较简单的图像,其存储空间比同一图像对应的位图图像要小得多。根据纹织图像多为大色块、轮廓明确的特点,利用链码方法对纹织图像中各个色块的轮廓进行跟踪,提取到各个色块的轮廓,然后利用直线与曲线相结合的方法进行拟合。直线拟合可以保持原色块轮廓中比较线性化的部分和色块图形中的尖锐角部分。对色块轮廓中的曲线部分,采用最小二乘法,用3次Bezier曲线进行拟合,取得了较好的效果。
Vectograph describes images and patterns. Its storage is much smaller than that of the bitmap of the same image. Big color block images are often used in the textile industry. Since the jacquard image is a big color block and the outline is clear, the chain-codemethod is adopted to trace the outline of every big color block and get the outlines of them. Then, the beeline and curve method is used for fitting the contours. Beeline fitting can keep the part of linearization and the acute angle of outlines of previous color blocks. For fitting the curve part, the least-squaremethod using three cubed Bezier curves is used. And good effect is achieved.
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2006年第3期33-35,共3页
Journal of Textile Research
关键词
位图
矢量图
图像矢量化
轮廓跟踪
轮廓拟合
bitmap
vectorgraph
vectorization of image
contour trace
contour fit
