Scalable Video Coding with Interlayer Signal Decorrelation Techniques
Scalability is one of the essential requirements in the compression of visual data for present-day multimedia communications and storage. The basic building block for providing the spatial scalability in the scalable video coding (SVC) standard is the well-known Laplacian pyramid (LP). An LP achieve...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2007-01-01
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| Series: | EURASIP Journal on Advances in Signal Processing |
| Online Access: | http://dx.doi.org/10.1155/2007/54342 |
| _version_ | 1811285964844171264 |
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| author | Christine Guillemot Gagan Rath Wenxian Yang |
| author_facet | Christine Guillemot Gagan Rath Wenxian Yang |
| author_sort | Christine Guillemot |
| collection | DOAJ |
| description | Scalability is one of the essential requirements in the compression of visual data for present-day multimedia communications and storage. The basic building block for providing the spatial scalability in the scalable video coding (SVC) standard is the well-known Laplacian pyramid (LP). An LP achieves the multiscale representation of the video as a base-layer signal at lower resolution together with several enhancement-layer signals at successive higher resolutions. In this paper, we propose to improve the coding performance of the enhancement layers through efficient interlayer decorrelation techniques. We first show that, with nonbiorthogonal upsampling and downsampling filters, the base layer and the enhancement layers are correlated. We investigate two structures to reduce this correlation. The first structure updates the base-layer signal by subtracting from it the low-frequency component of the enhancement layer signal. The second structure modifies the prediction in order that the low-frequency component in the new enhancement layer is diminished. The second structure is integrated in the JSVM 4.0 codec with suitable modifications in the prediction modes. Experimental results with some standard test sequences demonstrate coding gains up to 1 dB for I pictures and up to 0.7 dB for both I and P pictures. |
| first_indexed | 2024-04-13T02:52:44Z |
| format | Article |
| id | doaj.art-e2b1f1445c8f4436bb33335cc33b5438 |
| institution | Directory Open Access Journal |
| issn | 1687-6172 1687-6180 |
| language | English |
| last_indexed | 2024-04-13T02:52:44Z |
| publishDate | 2007-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | EURASIP Journal on Advances in Signal Processing |
| spelling | doaj.art-e2b1f1445c8f4436bb33335cc33b54382022-12-22T03:05:48ZengSpringerOpenEURASIP Journal on Advances in Signal Processing1687-61721687-61802007-01-01200710.1155/2007/54342Scalable Video Coding with Interlayer Signal Decorrelation TechniquesChristine GuillemotGagan RathWenxian YangScalability is one of the essential requirements in the compression of visual data for present-day multimedia communications and storage. The basic building block for providing the spatial scalability in the scalable video coding (SVC) standard is the well-known Laplacian pyramid (LP). An LP achieves the multiscale representation of the video as a base-layer signal at lower resolution together with several enhancement-layer signals at successive higher resolutions. In this paper, we propose to improve the coding performance of the enhancement layers through efficient interlayer decorrelation techniques. We first show that, with nonbiorthogonal upsampling and downsampling filters, the base layer and the enhancement layers are correlated. We investigate two structures to reduce this correlation. The first structure updates the base-layer signal by subtracting from it the low-frequency component of the enhancement layer signal. The second structure modifies the prediction in order that the low-frequency component in the new enhancement layer is diminished. The second structure is integrated in the JSVM 4.0 codec with suitable modifications in the prediction modes. Experimental results with some standard test sequences demonstrate coding gains up to 1 dB for I pictures and up to 0.7 dB for both I and P pictures.http://dx.doi.org/10.1155/2007/54342 |
| spellingShingle | Christine Guillemot Gagan Rath Wenxian Yang Scalable Video Coding with Interlayer Signal Decorrelation Techniques EURASIP Journal on Advances in Signal Processing |
| title | Scalable Video Coding with Interlayer Signal Decorrelation Techniques |
| title_full | Scalable Video Coding with Interlayer Signal Decorrelation Techniques |
| title_fullStr | Scalable Video Coding with Interlayer Signal Decorrelation Techniques |
| title_full_unstemmed | Scalable Video Coding with Interlayer Signal Decorrelation Techniques |
| title_short | Scalable Video Coding with Interlayer Signal Decorrelation Techniques |
| title_sort | scalable video coding with interlayer signal decorrelation techniques |
| url | http://dx.doi.org/10.1155/2007/54342 |
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