An Imaging System for Plant Growth Measurement in Plant Factory
Date Issued
2014
Date
2014
Author(s)
Liu, Ting-Yu
Abstract
Nowadays the efficient plant growth measurement, using image processing and stereo vision methodology takes the priority as the nondestructive measurement method. Despite the fact that stereo vision can measure spatial information of the plant, it still has some drawbacks. Therefore, in this research, we try to build a plant growth imaging system using the new popular Time-of-Flight camera. In this research, a time-of-flight range camera has been applied to plant growth measurement along with a self-made weight measurement device, to develop a portable, movable and automatic plant growth measuring system. The hardware design enables the system to be mounted on a planting bed of the multi-layer cultivation shelves. And then the system will control the motor to move the camera, taking color images and depth information from top of the view.
By using the image processing methodology developed in this research, images from different perspectives can be stitched into a panoramic image, providing a convenient whole view of the planting bed. The system will combine time-of-flight information to calculate plant’s geometry features and the functions like automatic image measuring, growth curve calculation and weight measurement can thus be realized.
After the validation, we compare the results done by the stereo vision techniques and a Boston lettuce growth experiment which add nanobubbles has been examined in this research. According to the result, lettuce adding nanobubbles during the growth process can enhance the total weight.
Subjects
植物工廠
時差測距
生長量測
奈米氣泡
Type
thesis
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