Region-of-interest based rate control algorithm for H.264/AVC video coding.
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| Title: | Region-of-interest based rate control algorithm for H.264/AVC video coding. |
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| Authors: | Li, Fan1 lifan@mail.xjtu.edu.cn, Li, Na1 |
| Source: | Multimedia Tools & Applications. Apr2016, Vol. 75 Issue 8, p4163-4186. 24p. |
| Subjects: | Algorithms -- Social aspects, Video coding, Computer vision, Signal-to-noise ratio, Rate distortion theory |
| Abstract: | Conventional rate control algorithms allocate bits for every macroblock (MB) without consider whether it needs encoding, and they choose encoding mode only from the set provided by H.264/AVC standard. While, according to the human visual system (HVS) research, human eyes can only focus on one area in a frame, which is called region-of-interest (ROI). This phenomenon gives a chance to code all MBs unequally, especially for NROI MB, we may do not need encoded. In this paper, a ROI-based rate control algorithm for H.264/AVC video coding is proposed to improve the coding efficiency. After the ROI segmentation, the target bits are unequally allocated for each MB. For non-region-of-interest (NROI) MB coding, we proposed the Active MB Concealment (AMC) Mode in rate-distortion optimization (RDO). The AMC gives a tradeoff between the rate and distortion and improve the quality of the ROI MBs at the cost of the quality decreasing of the NROI MBs. Compared with the conventional rate control algorithms, the experimental results demonstrate that the proposed algorithm gives the better performance in terms of the average peak signal-to-noise ratio (PSNR) and the subjective evaluations, and maintains the smoothness of video quality. [ABSTRACT FROM AUTHOR] |
| Copyright of Multimedia Tools & Applications is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 114606217 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Region-of-interest based rate control algorithm for H.264/AVC video coding. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Li%2C+Fan%22">Li, Fan</searchLink><relatesTo>1</relatesTo><i> lifan@mail.xjtu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Na%22">Li, Na</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Multimedia+Tools+%26+Applications%22">Multimedia Tools & Applications</searchLink>. Apr2016, Vol. 75 Issue 8, p4163-4186. 24p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Algorithms+--+Social+aspects%22">Algorithms -- Social aspects</searchLink><br /><searchLink fieldCode="DE" term="%22Video+coding%22">Video coding</searchLink><br /><searchLink fieldCode="DE" term="%22Computer+vision%22">Computer vision</searchLink><br /><searchLink fieldCode="DE" term="%22Signal-to-noise+ratio%22">Signal-to-noise ratio</searchLink><br /><searchLink fieldCode="DE" term="%22Rate+distortion+theory%22">Rate distortion theory</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Conventional rate control algorithms allocate bits for every macroblock (MB) without consider whether it needs encoding, and they choose encoding mode only from the set provided by H.264/AVC standard. While, according to the human visual system (HVS) research, human eyes can only focus on one area in a frame, which is called region-of-interest (ROI). This phenomenon gives a chance to code all MBs unequally, especially for NROI MB, we may do not need encoded. In this paper, a ROI-based rate control algorithm for H.264/AVC video coding is proposed to improve the coding efficiency. After the ROI segmentation, the target bits are unequally allocated for each MB. For non-region-of-interest (NROI) MB coding, we proposed the Active MB Concealment (AMC) Mode in rate-distortion optimization (RDO). The AMC gives a tradeoff between the rate and distortion and improve the quality of the ROI MBs at the cost of the quality decreasing of the NROI MBs. Compared with the conventional rate control algorithms, the experimental results demonstrate that the proposed algorithm gives the better performance in terms of the average peak signal-to-noise ratio (PSNR) and the subjective evaluations, and maintains the smoothness of video quality. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Multimedia Tools & Applications is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s11042-015-2465-0 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 24 StartPage: 4163 Subjects: – SubjectFull: Algorithms -- Social aspects Type: general – SubjectFull: Video coding Type: general – SubjectFull: Computer vision Type: general – SubjectFull: Signal-to-noise ratio Type: general – SubjectFull: Rate distortion theory Type: general Titles: – TitleFull: Region-of-interest based rate control algorithm for H.264/AVC video coding. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Li, Fan – PersonEntity: Name: NameFull: Li, Na IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 04 Text: Apr2016 Type: published Y: 2016 Identifiers: – Type: issn-print Value: 13807501 Numbering: – Type: volume Value: 75 – Type: issue Value: 8 Titles: – TitleFull: Multimedia Tools & Applications Type: main |
| ResultId | 1 |
