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Study On Image Monitoring And Analysing System Of Plant Root

Posted on:2006-06-29Degree:DoctorType:Dissertation
Country:ChinaCandidate:J Q LiuFull Text:PDF
GTID:1100360155468484Subject:Mechanical design and theory
Abstract/Summary:PDF Full Text Request
Root is one of the most important components of plant, also is the main alimentative organ of growth and metabolism. Root conformational parameters is one of the main factors of reflecting plant growth, so it is very useful to find out plant growth, prevent plant from insects and other applications by measuring and studying root conformational parameters periodically. But underground root is hard to sample, measure and observe accurately. Especially the existent methods such as Digging, Whole segment sample, Section and so fothr are time consuming and are devastating, which will block the deep study of root.This thesis combines the technologies computer vision analysis, mechtronics and image processing to exploit a plant root analysis system. The system consists of a CCD vidicon, an image gathering card, a three-dimensional motion image gathering components and analyzing software of conformational parameters. It is suitable for measurement of root conformational parameters and image monitoring and analyzing. This will make the fast and precise measurement and analysis of root conformational parameters possible, also will provide a fire-new, high effective and reliable tool to study the roots of plants. We have already gone for deep researches in vidicon demarcation, emendation of image geometric aberrance, images joint, edge detection of plants' roots basing on fractal theory and other aspects. We also posed an improved method of H parameter computation—incremental matrix algorithm to pick-up the outline of plants' roots. This will handle the shortcomes of traditional methods and gained much better experimental results afterwards. The main researching work of this thesis:1, To design the system monitoring and analyzing image of plant root. The hardware consists of the three-dimensional precisely orientating machine, the electrical control system, the lighting system and so on. The software includes the control of vidicon's orientating electromotor, the emendation and mosaic of root image, and the analysis of root conformational parameters.2, To study the processing of root image deeply using digital image processing technique. That includes emendation of image geometric aberrance of short focus lens, mosaic of root image's panorama, calculation of root conformational parameters and others. 3, Our research takes advantage of the fractal parameter to pick-up roots' image, and contrasts with the traditional Sobel Operator and Canny Operator. The outcome indicates that method using fractal parameter excels others in picking-up roots' image. In the light of calculation of parameter H, we mention an improved method called incremental matrix which is founded on the original arithmetic. We also make rules for the incremental matrix. Experiments indicate that this method is feasible in picking-up roots' image and calculation of parameter H.The exploit of NEFU-PRSA-01 auto/manual double-founction plant root panorama imageprocessing and analyzing system, which based on computer vidicon, is a breakthrough around the country in many choke points of online underground root monitoring. In the lights image gathering range, operational flexibility, automatic extent and other aspects, we have all obtained some breakthrough. Especially that the system applies fractal theory on picking-up roots' image for the first time. Besides these, we have exploited the software NEFU-PRSA-S01 used to analyse conformational parameters of root automatically. This will provide a fire-new studying method for scientific research related to agriculture and forest. And it is all a try that will advance the research of root in our country.This thesis is supported by the project Research on plant root image monitoing and analyzing system of the Harbin Youth Studying Foundation.
Keywords/Search Tags:plant root system, conformational parameters, camera demarcation, calibration of image aberrance, image mosaic, fractal theory
PDF Full Text Request
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