›› 2009, Vol. 21 ›› Issue (3): 0-282.

• 论文 •    

基于计算机视觉的自然光照条件下成熟石榴的识别

姜 莉,沈明霞 *,王学林   

  1. 南京农业大学工学院,江苏南京210031
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-05-25 发布日期:2009-05-25

Matare pomegranate recognition in natural lighting conditions based on computer vision

JIANG Li;SHEN Ming-xia *;WANG Xue—lin   

  1. College of Engineering,Nanjing Agriculture University,Nanjing 210031
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-05-25 Published:2009-05-25

摘要: 研究自然光照条件下成熟石榴识别;利用同态滤波进行图像增强,将图像从RGB空间转换到HSI空间,并将色调和饱和度融合,有效去除暗背景和灰背景,利用区域面积并结合形态学特征去噪实现区域分割,最后利用优化后的Hough变换提取形心和半径,恢复遮挡果形;基于VC++6.0开发图像处理程序,能够实现对成熟石榴的识别;识别率为85%以上,为下一步对目标正确定位,实现水果采摘自动化收获打下基础。

关键词: 同态滤波, 融合, Hough变换, 特征提取

Abstract: A recognition technique of mature pomegranates in natural light conditions was studied.Images of mature pomerganates were enhanced by homomorphic filtering and converted from RGB space to HSI space, then the components of
hue and saturation were fused to remove the dark backgrounds.Afterwards.images were segmented by the regional areas and morphologic characteristics,then centroids and radius were extracted by Hough transform,and the shape of occlusion fruits was recovered.Finally,image processing program was developed for the recognition of mature pomegranates based on VC++6.0.The results showed that the correct recognition rate is>85%,supplying a good foundation for the implementation in the autonomous harvesting on fruit picking in the future.

Key words: homomorphic filter, fusion, hough transform, feature extracting