Plant Three-dimensional Information Detection Based on Single Moving Camera
Dongbo Zhang, Xi Deng, Xiaojing Liu, Bin Zhang
Available Online January 2014.
- https://doi.org/10.2991/ccit-14.2014.30How to use a DOI?
- information technology, sensing detection, three-dimension (3D), plant
- Using non-contact sensing techniques and facilities to gain plant three-dimensional (3D) information can satisfy different kinds of needs in digital and intelligent agricultural production. 3D information could be used for vegetative modeling and monitoring or plant production management and operation. A plant 3D information detecting technology based on the movement of single camera was proposed. The method was divided into three steps. Firstly, calculate the camera matrix in different spatial positions. Presume that world coordinate was coincided with camera coordinate in one position. With the known movement parameters of camera, it was able to calculate the camera matrix in another position. Secondly, extract plant information using image processing technology. Then, sample plant areas and pick up matching points. A region matching method based on epipolar constraint was applied to obtain corresponding points between images gathered in different positions. The region matching error metrics was the sum of absolute differences (SAD) of RGB channels. Finally, with the matching points and projective geometry, target plant’s 3D information could be calculated. A web camera common on the market was used in experiments to verify this detecting technique. It turned out that while the average distance between camera and plant was less than 1.2m, the detecting error of x and y axis was within -18.9mm~+16.2mm and +7.0~+28.1mm in z direction. While the average distance about 1.5m, the detecting error of x and y axis was within -36.0mm~+5.6mm and +7.0~+59.0mm in z direction. And it also appeared that the closer the distance was the higher the detecting precision would be.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Dongbo Zhang AU - Xi Deng AU - Xiaojing Liu AU - Bin Zhang PY - 2014/01 DA - 2014/01 TI - Plant Three-dimensional Information Detection Based on Single Moving Camera BT - 2014 International Conference on Computer, Communications and Information Technology (CCIT 2014) PB - Atlantis Press SN - 1951-6851 UR - https://doi.org/10.2991/ccit-14.2014.30 DO - https://doi.org/10.2991/ccit-14.2014.30 ID - Zhang2014/01 ER -