碩士 / 國立雲林科技大學 / 電子工程系 / 106 / This paper presents a curve distortion correction method to refine a fisheye image with angle rotation and interpolation method. The computer with DVP-7010BE video card samples the fisheye images from camera with 120 and 160-degree lens. The real time processing algorithms perform various angles rotating according to the part of image. First, we detect the distortion angle with a calibration paper. The rotation angle is based on the detected results. The rotation can correct the curve of lens, however, this operation will appears image discontinuous phenomenon. Then the interpolation is used to fill missing pixels after rotation. The rotation angle of the center part is smaller than that of the corner. Large rotation angle requires to be interpolated more pixels by the edge-based interpolation method. The interpolation can solve the problem of discontinuity image, but the blurring image after correction is inevitable. We employed C-programming to perform the algorithm with computer based. The images are sampled by DVP-7010BE caught card and the processing for each frame with real-time operation. Results demonstrate that the original image and the corrected image can be shown on LCD screen at the same time, for comparisons. The processing rate can achieve 20 frames per second.
| Identifer | oai:union.ndltd.org:TW/106YUNT0393058 |
| Date | January 2018 |
| Creators | YANG,SHIH-TING, 楊士霆 |
| Contributors | HSIA,SHIH-CHANG, 夏世昌 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 68 |
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