| 3D modeling via structure from motion approach for determining the effect of drought stress on tomato plant geometry |
| Paper ID : 1195-NICAME1402 |
| Authors: |
|
Tahere Rezaee Roshan1, Mehrnoosh Jafari *2, Mahdiyeh Gholami3, Mohsen Kazemi4 1Department of Biosytems Engineering, College of Agriculture, Isfahan University of Technology, Isfahan, Iran 2Department of Biosystems Engineering-College of Agriculture-Isfahan University of Technology-Isfahan-Iran 3Department of Horticultural Science, College of Agriculture, Isfahan University of Technology, Isfahan, Iran 4Department of Biochemistry and Molecular Biology, The University of Melbourne, Melbourne, Australia |
| Abstract: |
| Measuring the vegetative characteristics of the plant with the use of 3D images is a non-destructive method that can be used to monitor the condition of the plant during the growing season. Among the passive optical distance measurement methods, the structure from motion method is considered one of the most common. In the current research, in order to investigate the effect of drought stress on the geometry of tomato plants, a system was designed and developed based on the structure from motion photogrammetry method with the ability to rotate the camera 360 degrees. 60 tomato seedlings of the variety CH Falat were subjected to three different regimes of irrigation: 1) irrigation up to the field capacity (C), interruption of irrigation until 80% wilting in the plant and then re-irrigation (T1) and 3) interruption of irrigation until complete dryness of the plant (T2). 3D models were reconstructed using Agisoft PhotoScan software. The results showed that for the control plants until the end of the experiment period, the leaf area, diameter and height of the stem increased by 59.68%, 3.75% and 17.97%, respectively. In T1 treatment, until re-watering, leaf area decreased by 43.86%, stem diameter decreased by 12.11%, and height decreased by 3.2%, and after re-watering, leaf area increased by 34.4%, stem diameter increased by 0.61% and stem height increase by 2.32%. For T2 treatment until the seventh day and complete removal of plants, 51.99% reduction in leaf area, 17.38% reduction in stem diameter and 18.67% reduction in stem height were estimated. |
| Keywords: |
| : Structure from motion, 3D modeling, Drought stress, Tomato |
| Status : Paper Accepted (Poster Presentation) |
