A Fast Two-Stage Bilateral Filter Using Constant Time <i>O</i>(1) Histogram Generation
Bilateral Filtering (BF) is an effective edge-preserving smoothing technique in image processing. However, an inherent problem of BF for image denoising is that it is challenging to differentiate image noise and details with the range kernel, thus often preserving both noise and edges in denoising....
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/3/926 |
| _version_ | 1797484721173692416 |
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| author | Sheng-Wei Cheng Yi-Ting Lin Yan-Tsung Peng |
| author_facet | Sheng-Wei Cheng Yi-Ting Lin Yan-Tsung Peng |
| author_sort | Sheng-Wei Cheng |
| collection | DOAJ |
| description | Bilateral Filtering (BF) is an effective edge-preserving smoothing technique in image processing. However, an inherent problem of BF for image denoising is that it is challenging to differentiate image noise and details with the range kernel, thus often preserving both noise and edges in denoising. This letter proposes a novel Dual-Histogram BF (DHBF) method that exploits an edge-preserving noise-reduced guidance image to compute the range kernel, removing isolated noisy pixels for better denoising results. Furthermore, we approximate the spatial kernel using mean filtering based on column histogram construction to achieve constant-time filtering regardless of the kernel radius’ size and achieve better smoothing. Experimental results on multiple benchmark datasets for denoising show that the proposed DHBF outperforms other state-of-the-art BF methods. |
| first_indexed | 2024-03-09T23:09:28Z |
| format | Article |
| id | doaj.art-110ccbd6ca7b46f8ae7832b5292edcc7 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T23:09:28Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-110ccbd6ca7b46f8ae7832b5292edcc72023-11-23T17:47:45ZengMDPI AGSensors1424-82202022-01-0122392610.3390/s22030926A Fast Two-Stage Bilateral Filter Using Constant Time <i>O</i>(1) Histogram GenerationSheng-Wei Cheng0Yi-Ting Lin1Yan-Tsung Peng2Department of Computer Science, National Chengchi University, Taipei City 11605, TaiwanDepartment of Computer Science, National Chengchi University, Taipei City 11605, TaiwanDepartment of Computer Science, National Chengchi University, Taipei City 11605, TaiwanBilateral Filtering (BF) is an effective edge-preserving smoothing technique in image processing. However, an inherent problem of BF for image denoising is that it is challenging to differentiate image noise and details with the range kernel, thus often preserving both noise and edges in denoising. This letter proposes a novel Dual-Histogram BF (DHBF) method that exploits an edge-preserving noise-reduced guidance image to compute the range kernel, removing isolated noisy pixels for better denoising results. Furthermore, we approximate the spatial kernel using mean filtering based on column histogram construction to achieve constant-time filtering regardless of the kernel radius’ size and achieve better smoothing. Experimental results on multiple benchmark datasets for denoising show that the proposed DHBF outperforms other state-of-the-art BF methods.https://www.mdpi.com/1424-8220/22/3/926image smoothinggaussian filteringbilateral filtering<i>O</i>(1) complexity |
| spellingShingle | Sheng-Wei Cheng Yi-Ting Lin Yan-Tsung Peng A Fast Two-Stage Bilateral Filter Using Constant Time <i>O</i>(1) Histogram Generation Sensors image smoothing gaussian filtering bilateral filtering <i>O</i>(1) complexity |
| title | A Fast Two-Stage Bilateral Filter Using Constant Time <i>O</i>(1) Histogram Generation |
| title_full | A Fast Two-Stage Bilateral Filter Using Constant Time <i>O</i>(1) Histogram Generation |
| title_fullStr | A Fast Two-Stage Bilateral Filter Using Constant Time <i>O</i>(1) Histogram Generation |
| title_full_unstemmed | A Fast Two-Stage Bilateral Filter Using Constant Time <i>O</i>(1) Histogram Generation |
| title_short | A Fast Two-Stage Bilateral Filter Using Constant Time <i>O</i>(1) Histogram Generation |
| title_sort | fast two stage bilateral filter using constant time i o i 1 histogram generation |
| topic | image smoothing gaussian filtering bilateral filtering <i>O</i>(1) complexity |
| url | https://www.mdpi.com/1424-8220/22/3/926 |
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