Invention Grant
- Patent Title: Binocular-vision-based method for tracking fruit space attitude and fruit space motion
-
Application No.: US17296624Application Date: 2020-01-23
-
Publication No.: US11694343B2Publication Date: 2023-07-04
- Inventor: Linyun Xu , Hongping Zhou , Guanhua Liu , Jie Zhou , Yan Xuan , Xuesong Jiang , Qing Chen
- Applicant: NANJING FORESTRY UNIVERSITY
- Applicant Address: CN Nanjing
- Assignee: NANJING FORESTRY UNIVERSITY
- Current Assignee: NANJING FORESTRY UNIVERSITY
- Current Assignee Address: CN Nanjing
- Priority: CN 1811438358.7 2018.11.27
- International Application: PCT/CN2020/074017 2020.01.23
- International Announcement: WO2020/108668A 2020.06.04
- Date entered country: 2021-05-25
- Main IPC: G06T7/246
- IPC: G06T7/246 ; G06T7/285 ; G06T7/66 ; G06T3/60

Abstract:
A binocular-vision-based method for tracking fruit space attitude and fruit space motion, the method comprising: establishing a connected base coordinate system by taking a junction of a fruit and a fruit stem as an origin; statically photographing a feature point on the surface of the fruit and a point of the connected base coordinate system established at the junction of the fruit and the fruit stem; storing a photographed image; acquiring an inherent relationship between the feature point and the connected base coordinate system; photographing dynamic motion of the fruit; acquiring absolute coordinates of the feature point on the surface of the fruit; calculating, according to the inherent relationship between the feature point and the connected base coordinate system, absolute coordinates of a point of the connected base coordinate system at each moment corresponding to each frame of image; and respectively calculating the displacement, instantaneous speed and instantaneous acceleration of the fruit, calculating swing angular displacement and swing angular acceleration of the fruit, and calculating a fruit torsion angular speed and a fruit torsion angular acceleration at the moment t. The study of a fruit motion state in the field of forest fruit harvest through vibration is performed, so that the motion of fruits can be better tracked.
Public/Granted literature
- US20220005209A1 BINOCULAR-VISION-BASED METHOD FOR TRACKING FRUIT SPACE ATTITUDE AND FRUIT SPACE MOTION Public/Granted day:2022-01-06
Information query