Optimized Contrast Enhancement for Infrared Images Based on Global and Local Histogram Specification
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| Title: | Optimized Contrast Enhancement for Infrared Images Based on Global and Local Histogram Specification |
|---|---|
| Authors: | Chengwei Liu, Xiubao Sui, Xiaodong Kuang, Yuan Liu, Guohua Gu, Qian Chen |
| Source: | Remote Sensing, Vol 11, Iss 7, p 849 (2019) |
| Publisher Information: | MDPI AG |
| Publication Year: | 2019 |
| Collection: | Directory of Open Access Journals: DOAJ Articles |
| Subject Terms: | 2D histogram, histogram specification, optimization equation, contrast enhancement, Science |
| Description: | In this paper, an optimized contrast enhancement method combining global and local enhancement results is proposed to improve the visual quality of infrared images. Global and local contrast enhancement methods have their merits and demerits, respectively. The proposed method utilizes the complementary characteristics of these two methods to achieve noticeable contrast enhancement without artifacts. In our proposed method, the 2D histogram, which contains both global and local gray level distribution characteristics of the original image, is computed first. Then, based on the 2D histogram, the global and local enhanced results are obtained by applying histogram specification globally and locally. Lastly, the enhanced result is computed by solving an optimization equation subjected to global and local constraints. The pixel-wise regularization parameters for the optimization equation are adaptively determined based on the edge information of the original image. Thus, the proposed method is able to enhance the local contrast while preserving the naturalness of the original image. Qualitative and quantitative evaluation results demonstrate that the proposed method outperforms the block-based methods for improving the visual quality of infrared images. |
| Document Type: | article in journal/newspaper |
| Language: | English |
| Relation: | https://www.mdpi.com/2072-4292/11/7/849; https://doaj.org/toc/2072-4292; https://doaj.org/article/f99c7d5df8ab41719a23b44b61a46504 |
| DOI: | 10.3390/rs11070849 |
| Availability: | https://doi.org/10.3390/rs11070849 https://doaj.org/article/f99c7d5df8ab41719a23b44b61a46504 |
| Accession Number: | edsbas.AF64091C |
| Database: | BASE |
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| Header | DbId: edsbas DbLabel: BASE An: edsbas.AF64091C RelevancyScore: 893 AccessLevel: 3 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 892.664306640625 |
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| Items | – Name: Title Label: Title Group: Ti Data: Optimized Contrast Enhancement for Infrared Images Based on Global and Local Histogram Specification – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Chengwei+Liu%22">Chengwei Liu</searchLink><br /><searchLink fieldCode="AR" term="%22Xiubao+Sui%22">Xiubao Sui</searchLink><br /><searchLink fieldCode="AR" term="%22Xiaodong+Kuang%22">Xiaodong Kuang</searchLink><br /><searchLink fieldCode="AR" term="%22Yuan+Liu%22">Yuan Liu</searchLink><br /><searchLink fieldCode="AR" term="%22Guohua+Gu%22">Guohua Gu</searchLink><br /><searchLink fieldCode="AR" term="%22Qian+Chen%22">Qian Chen</searchLink> – Name: TitleSource Label: Source Group: Src Data: Remote Sensing, Vol 11, Iss 7, p 849 (2019) – Name: Publisher Label: Publisher Information Group: PubInfo Data: MDPI AG – Name: DatePubCY Label: Publication Year Group: Date Data: 2019 – Name: Subset Label: Collection Group: HoldingsInfo Data: Directory of Open Access Journals: DOAJ Articles – Name: Subject Label: Subject Terms Group: Su Data: <searchLink fieldCode="DE" term="%222D+histogram%22">2D histogram</searchLink><br /><searchLink fieldCode="DE" term="%22histogram+specification%22">histogram specification</searchLink><br /><searchLink fieldCode="DE" term="%22optimization+equation%22">optimization equation</searchLink><br /><searchLink fieldCode="DE" term="%22contrast+enhancement%22">contrast enhancement</searchLink><br /><searchLink fieldCode="DE" term="%22Science%22">Science</searchLink> – Name: Abstract Label: Description Group: Ab Data: In this paper, an optimized contrast enhancement method combining global and local enhancement results is proposed to improve the visual quality of infrared images. Global and local contrast enhancement methods have their merits and demerits, respectively. The proposed method utilizes the complementary characteristics of these two methods to achieve noticeable contrast enhancement without artifacts. In our proposed method, the 2D histogram, which contains both global and local gray level distribution characteristics of the original image, is computed first. Then, based on the 2D histogram, the global and local enhanced results are obtained by applying histogram specification globally and locally. Lastly, the enhanced result is computed by solving an optimization equation subjected to global and local constraints. The pixel-wise regularization parameters for the optimization equation are adaptively determined based on the edge information of the original image. Thus, the proposed method is able to enhance the local contrast while preserving the naturalness of the original image. Qualitative and quantitative evaluation results demonstrate that the proposed method outperforms the block-based methods for improving the visual quality of infrared images. – Name: TypeDocument Label: Document Type Group: TypDoc Data: article in journal/newspaper – Name: Language Label: Language Group: Lang Data: English – Name: NoteTitleSource Label: Relation Group: SrcInfo Data: https://www.mdpi.com/2072-4292/11/7/849; https://doaj.org/toc/2072-4292; https://doaj.org/article/f99c7d5df8ab41719a23b44b61a46504 – Name: DOI Label: DOI Group: ID Data: 10.3390/rs11070849 – Name: URL Label: Availability Group: URL Data: https://doi.org/10.3390/rs11070849<br />https://doaj.org/article/f99c7d5df8ab41719a23b44b61a46504 – Name: AN Label: Accession Number Group: ID Data: edsbas.AF64091C |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/rs11070849 Languages: – Text: English Subjects: – SubjectFull: 2D histogram Type: general – SubjectFull: histogram specification Type: general – SubjectFull: optimization equation Type: general – SubjectFull: contrast enhancement Type: general – SubjectFull: Science Type: general Titles: – TitleFull: Optimized Contrast Enhancement for Infrared Images Based on Global and Local Histogram Specification Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Chengwei Liu – PersonEntity: Name: NameFull: Xiubao Sui – PersonEntity: Name: NameFull: Xiaodong Kuang – PersonEntity: Name: NameFull: Yuan Liu – PersonEntity: Name: NameFull: Guohua Gu – PersonEntity: Name: NameFull: Qian Chen IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Type: published Y: 2019 Identifiers: – Type: issn-locals Value: edsbas – Type: issn-locals Value: edsbas.oa Titles: – TitleFull: Remote Sensing, Vol 11, Iss 7, p 849 (2019 Type: main |
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