A Removing Rain Streaks Technology for Single Image by Combining High Pass and Low Pass Filters
| Autor: | Jing-Hao Zhou, 周靖皓 |
|---|---|
| Rok vydání: | 2017 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 105 In this thesis, we propose to remove rain streaks by high pass and low pass filter method of combination. In the image, the low frequency component is background and the high frequency components are contour and rain streaks by combining high pass and low pass filters. The method which we proposed can remove rain and keep the original background and contour. First, we reduce impact of rain streaks by smooth filter (LPF). The rain streaks component is the difference between the original image and smooth filtered image. After that, through threshold process and adjust parameters to change for level of removing rain image. Second, in order to highlight contour for image, e.g. edge image, this is generated by high pass filter. The image enhancement is obtained by sum of edge image and original image. Finally, by implementing ROM filter from difference of the rain streaks component and the image enhancement generate a removal rain image. In this thesis, the results of our research are as follows: 1. We highlight rain streaks components, background components and contour of image in image by a simple combination for high pass and low pass filter method. After that, use ROM filter to generate removing rain image. 2. We can adjust parameter to change for level of removing rain image. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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