农业机械学报2011，Vol.42Issue(8)：164-167,142,5.
基于归一化椭圆傅里叶描述子的黄瓜形状识别
Cucumber Shape Description Based on Elliptic Fourier Descriptor
摘要
Abstract
Aiming at identifying the shape of arbitrary object quickly and accurately, cucumber was taken as a research object. The boundary of cucumber image was extracted through digital image processing including image enhancing, threshold processing, morphological operations and edge extraction operation. Then elliptic Fourier descriptors were used to describe the boundary information of cucumber quantitatively, and the elliptic Fourier descriptors were normalized at start point, rotation and size after that. The cucumber shape was reconstructed by using different numbers of harmonics of elliptic Fourier descriptors with error analysis. The experiment results showed that the complex shape of cucumber could be described by a small amount of elliptic Fourier descriptor through the description of elliptic Fourier method, and the elliptic Fourier descriptor could reconstruct the original shape accurately.关键词
黄瓜/形状描述/边界/傅里叶描述子Key words
Cucumber/ Shape description / Boundary/ Fourier descriptor分类
信息技术与安全科学引用本文复制引用
戚利勇,高峰,谭豫之,杨庆华..基于归一化椭圆傅里叶描述子的黄瓜形状识别[J].农业机械学报,2011,42(8):164-167,142,5.基金项目
国家高技术研究发展计划(863计划)资助项目(2009AA042209)、浙江省自然科学基金杰出青年团队资助项目(R1090674)和浙江省机械电子工程重中之重学科开放基金资助项目(20090324) （863计划）
