Image Processing for Laser Imaging Using Adaptive Homomorphic Filtering and Total Variation
Laser active imaging technology has important practical value and broad application prospects in military fields such as target detection, radar reconnaissance, and precise guidance. However, factors such as uneven laser illuminance, atmospheric backscatter, and the imaging system itself will introd...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-04-01
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| Series: | Photonics |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2304-6732/7/2/30 |
| _version_ | 1797570256553639936 |
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| author | Youchen Fan Laixian Zhang Huichao Guo Hongxing Hao Kechang Qian |
| author_facet | Youchen Fan Laixian Zhang Huichao Guo Hongxing Hao Kechang Qian |
| author_sort | Youchen Fan |
| collection | DOAJ |
| description | Laser active imaging technology has important practical value and broad application prospects in military fields such as target detection, radar reconnaissance, and precise guidance. However, factors such as uneven laser illuminance, atmospheric backscatter, and the imaging system itself will introduce noise, which will affect the quality of the laser active imaging image, resulting in image contrast decline and blurring image edges and details. Therefore, an image denoising algorithm based on homomorphic filtering and total variation cascade is proposed in this paper, which strives to reduce the noise while retaining the edge features of the image to the maximum extent. Firstly, the image type is determined according to the characteristics of the laser image, and then the speckle noise in the low-frequency region is suppressed by adaptive homomorphic filtering. Finally, the image denoising method of minimizing the total variation is adopted for the impulse noise and Gaussian noise. Experimental results show that compared with separate homomorphic filtering, total variation filtering, and median filtering, the proposed algorithm significantly improves the contrast, retains edge details, achieves the expected effect. It can better adjust the image brightness and is beneficial for subsequent processing. |
| first_indexed | 2024-03-10T20:22:19Z |
| format | Article |
| id | doaj.art-8d5ee180659f433d8c585edfc0c69ebc |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-10T20:22:19Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-8d5ee180659f433d8c585edfc0c69ebc2023-11-19T22:05:36ZengMDPI AGPhotonics2304-67322020-04-01723010.3390/photonics7020030Image Processing for Laser Imaging Using Adaptive Homomorphic Filtering and Total VariationYouchen Fan0Laixian Zhang1Huichao Guo2Hongxing Hao3Kechang Qian4School of Space Information, Space Engineering University, Beijing 101416, ChinaDepartment of Optical and Electronic Equipment, Space Engineering University, Beijing 101416, ChinaDepartment of Optical and Electronic Equipment, Space Engineering University, Beijing 101416, ChinaSchool of Space Information, Space Engineering University, Beijing 101416, ChinaSchool of Space Information, Space Engineering University, Beijing 101416, ChinaLaser active imaging technology has important practical value and broad application prospects in military fields such as target detection, radar reconnaissance, and precise guidance. However, factors such as uneven laser illuminance, atmospheric backscatter, and the imaging system itself will introduce noise, which will affect the quality of the laser active imaging image, resulting in image contrast decline and blurring image edges and details. Therefore, an image denoising algorithm based on homomorphic filtering and total variation cascade is proposed in this paper, which strives to reduce the noise while retaining the edge features of the image to the maximum extent. Firstly, the image type is determined according to the characteristics of the laser image, and then the speckle noise in the low-frequency region is suppressed by adaptive homomorphic filtering. Finally, the image denoising method of minimizing the total variation is adopted for the impulse noise and Gaussian noise. Experimental results show that compared with separate homomorphic filtering, total variation filtering, and median filtering, the proposed algorithm significantly improves the contrast, retains edge details, achieves the expected effect. It can better adjust the image brightness and is beneficial for subsequent processing.https://www.mdpi.com/2304-6732/7/2/30lasernoisehomomorphic filteringadaptive |
| spellingShingle | Youchen Fan Laixian Zhang Huichao Guo Hongxing Hao Kechang Qian Image Processing for Laser Imaging Using Adaptive Homomorphic Filtering and Total Variation Photonics laser noise homomorphic filtering adaptive |
| title | Image Processing for Laser Imaging Using Adaptive Homomorphic Filtering and Total Variation |
| title_full | Image Processing for Laser Imaging Using Adaptive Homomorphic Filtering and Total Variation |
| title_fullStr | Image Processing for Laser Imaging Using Adaptive Homomorphic Filtering and Total Variation |
| title_full_unstemmed | Image Processing for Laser Imaging Using Adaptive Homomorphic Filtering and Total Variation |
| title_short | Image Processing for Laser Imaging Using Adaptive Homomorphic Filtering and Total Variation |
| title_sort | image processing for laser imaging using adaptive homomorphic filtering and total variation |
| topic | laser noise homomorphic filtering adaptive |
| url | https://www.mdpi.com/2304-6732/7/2/30 |
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