| Summary: | 碩士 === 國立中興大學 === 電機工程學系 === 92 === This paper presents the methodology of image processing system and disc holder center detection of an automatic disc duplicator system as a research topic. The paper touches on introduction of hardware system, the controlling software of CD-Rom and image capture device, image processing methodology and centre detection methodology and etc.
The image processing includes, how to lower noise of the image, color image graying, usage of Nearest Neighbor, Linear and Cubic interpolation method for image zooming, lastly the edge detection of the image, using Robert, Laplacian, Sober and Canny methodology to detect the edge of the disc holder respectively, then using the effect of the result and consuming time for each algorithm used for assessment, so as to select the most suitable centre detection combination.
For disc holder centre detection method, Radon Transform can be used to find out the main straight line of the image and then couple with Least Square Circle to find out the centre of the disc holder’s centre.
To enable detection system to compute quickly and control the accuracy within ±0.2mm are the objectives of the paper.
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