系统仿真学报 ›› 2015, Vol. 27 ›› Issue (4): 836-842.

• 信息、控制、决策与仿真 • 上一篇    下一篇

基于动态目标的采摘机器人视觉定位技术研究

熊俊涛1,2, 邹湘军2※, 邹海鑫2, 彭红星2, 叶敏2   

  1. 1.华南农业大学信息学院, 广州 510642;
    2.华南农业大学工程学院南方农业机械与装备关键技术教育部重点实验室, 广州 510642
  • 收稿日期:2013-12-20 修回日期:2014-04-09 发布日期:2020-08-20
  • 作者简介:熊俊涛(1981-),男,湖北监利人,博士,副教授,研究方向为计算机图像处理和机器视觉;邹湘军*(通信作者1957-),女,湖南衡阳,博士,教授,研究方向为农业机器人、智能设计与制造。
  • 基金资助:
    国家自然科学基金资助项目(31201135;51175189)

Visual Positioning Technology Research of Picking Robot Based on Dynamic Target

Xiong Juntao1,2, Zou Xiangjun2※, Zou Haixin2, Peng Hongxing2, Ye Min2   

  1. 1. College of Informatics, South China Agricultural University, Guangzhou 510642, China;
    2. Key Lab of Key Technology on Agricultural Machine and Equipment Ministry of Education and Guangdong Province, College of Engineering, South China Agricultural University, Guangzhou 510642, China
  • Received:2013-12-20 Revised:2014-04-09 Published:2020-08-20

摘要: 自然环境中水果扰动是采摘机器人视觉定位的难点。研究通过计算扰动荔枝图像中果实摆角大小,确定了静止、微扰动和大扰动3种状态;针对静止、微扰动的荔枝,利用改进的FCM模糊聚类方法进行果实、果梗的图像分割,利用Hough直线拟合确定果梗上有效采摘区域,实现了荔枝采摘点的空间视觉定位,并通过虚拟现实技术进行了机械手采摘扰动目标的仿真。视觉定位试验结果:静止、微扰动荔枝采摘点的视觉定位的深度误差值最大为2.3 cm,最小为 0.6cm,表明了该方法的合理性与有效性。

关键词: 采摘机器人, 动态目标, 荔枝扰动, 视觉定位, 仿真系统

Abstract: A difficult problem of picking robot visual position in the natural environment is the disturbance because of interference factors. The angular size of disturbed fruit was calculated to determine the three states of fruit that static, micro disturbance and large disturbance; For static and micro disturbance litchi, the improved FCM fuzzy clustering method was used to segment litchi image to acquire litchi fruit and fruit stalk, then the Hough linear fitting was used to determine the effective picking area and picking point on the fruit stalk, so realizing the visual space positioning of litchi picking point, and the simulation of manipulator picking disturbance target was carried on using the virtual reality technology. The visual positioning test results show that the visual positioning depth error values of static and micro disturbance litchis picking points are up to 2.3 cm, and the smallest is 0.6 cm, which shows the rationality and effectiveness of this method.

Key words: picking robot, dynamic target, lichi disturbance, vision localization, system simulation

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