Eucalyptus tree width measurement system using stereo vision | |
| Author | Thilakasiri, Laddusinghe Badu Hasini Thilanka |
| Call Number | AIT Caps. Proj. no.EL-17-05 |
| Subject(s) | Computer vision Trees--Measurement Global Positioning System |
| Note | A capstone project report submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Engineering Electronics Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Caps. Proj. ; no. EL-17-05 |
| Abstract | Eucalyptus trees are fast-grown important economic trees. They are raw materials for many types of downstream industries: tissue, construction, furniture, biomass energy, and multipurpose wood. In Thailand, we can plant eucalyptus trees all year-round. Since the workers/ agricultural labors are used to do the all activities in the plantation process manually, the company is going to be needing a large number of workers. Not only for eucalyptus tree plantations, but also for other plantations and forest inventory purposes tree growth measurement is important. Also since the normal tree growth (width) measurement method is manually done by workers with a measuring tape, it is most likely to have human errors. In my project I developed an Eucalyptus tree width measurement system using stereo vision to make the tree width measurement process more easy and accurate. I am using two digital cameras to capture images along with a GPS mobile application to get the GPS position of the tree. My projects procedure has three main stages. After getting the camera parameters using camera calibration, the images are being rectified. I am using images in which the tree is segmented from the background. The rectified images are used in the stereo correspondence process and will output the disparity map. The 3D coordinates of the scene is found using the reprojectimageto3d() Opencv function. The 3D scene is then visualized using the point cloud library (PCL) after which the RANSAC cylinder fit function is used to fit the points of the tree trunk into a cylinder. After finding the best fit cylinder, the diameter of that cylinder is taken as the calculated width of the tree. Finally the calculated width values are saved to the pc with their corresponding GPS location values. |
| Year | 2017 |
| Corresponding Series Added Entry | Asian Institute of Technology. Caps. Proj. ; no. EL-17-05 |
| Type | Capstone Project |
| School | School of Engineering and Technology (SET) |
| Department | Bachelor Degree |
| Academic Program/FoS | Electronic Engineering (EL) |
| Chairperson(s) | Mongkol Ekpanyapong; |
| Examination Committee(s) | Dailey, Matthew N.; |
| Degree | Capstone Project (B.Sc.)-Asian Institute of Technology, 2017 |