Distinguish The Erode Area Of The Hydraulic Turbine's Lamina

Distinguish the erode area of the Hydraulic Turbine's lamina measurement is the important subject in the research of computer vision area. It belongs to the category of reverse engineering and widely used in many areas such as VR (virtual reality), manufacture industry, robot vision and medicine domain. Base on the structure light of three-dimensional profile measurement is the hotspot in the three-dimensional profile measurement research. The method isn't touch the measured thing when it work and have many trait such as high speed, low cost, high precision. The methods have great need of society and developed room. But how to get accurate three-dimensional information of the measured thing as quickly as possible and based on the information to restore the profile is still the challenge subject.The articles have analyzed the research content of the current three-dimensional measurement and have systemic study it. The discussed content includes measurement theory, phase unwrapping, system calibration, select equipment and so on.First, the article introduce is about the basic theory of the structure light of three-dimensional profile measurement. I have discussed the phase unwrapping base on Fourier transform.The theory of phase unwrapping is introduced and many kinds of phase unwrapping arithmetic had been discussed. Finally, I select reliable phase unwrapping because the methods have many traits such as error decrease, avoid noise, high efficiency and optimize system.I have made comprehensive system calibration. In order to insure the system accuracy, the connection between the system coordinates is discussed; second, I have calibrated the main parts of system.The article have make sure the system project of the Special-Purpose Robot for Hydraulic Turbine Repair's vision and introduce what make up of the vision system. I have select the main part of the system after discuss that capability. Finally, confirm the arithmetic through simulated experiment.