A Design of Adaptive Quantizer for MPEG-2 Video Coding
Based upon studying the strategy for adaptive quantization suggested by MPEG-2 Test Model 5,a new quantizer is presented in this paper.Block-based visual activities are analyzed to exploit local perceptual characteristics in the macroblock.In order to decide the adaptive perceptual quantization fact...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Journal on Communications
1995-01-01
|
| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/74379499/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841538301985554432 |
|---|---|
| author | 孙军 张文军 余松煜 |
| author_facet | 孙军 张文军 余松煜 |
| author_sort | 孙军 |
| collection | DOAJ |
| description | Based upon studying the strategy for adaptive quantization suggested by MPEG-2 Test Model 5,a new quantizer is presented in this paper.Block-based visual activities are analyzed to exploit local perceptual characteristics in the macroblock.In order to decide the adaptive perceptual quantization factor,macroblock characteristic is identified by evaluating comprehensively each block’s local activity within this macroblock.Experiment results show that coding distortion is uniformly distributed across the image with the proposed quantizer ,and picture quality is improved. In particular,block artifacts in flat area and distortion at edges on flat backgrounds are significantly reduced. |
| format | Article |
| id | doaj-art-340a2d694a014e4db6209790e620951a |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 1995-01-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-340a2d694a014e4db6209790e620951a2025-01-14T07:54:06ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X1995-01-0174379499A Design of Adaptive Quantizer for MPEG-2 Video Coding孙军张文军余松煜Based upon studying the strategy for adaptive quantization suggested by MPEG-2 Test Model 5,a new quantizer is presented in this paper.Block-based visual activities are analyzed to exploit local perceptual characteristics in the macroblock.In order to decide the adaptive perceptual quantization factor,macroblock characteristic is identified by evaluating comprehensively each block’s local activity within this macroblock.Experiment results show that coding distortion is uniformly distributed across the image with the proposed quantizer ,and picture quality is improved. In particular,block artifacts in flat area and distortion at edges on flat backgrounds are significantly reduced.http://www.joconline.com.cn/zh/article/74379499/MPFGDCT codingadaptive quantizationscene analysis |
| spellingShingle | 孙军 张文军 余松煜 A Design of Adaptive Quantizer for MPEG-2 Video Coding Tongxin xuebao MPFG DCT coding adaptive quantization scene analysis |
| title | A Design of Adaptive Quantizer for MPEG-2 Video Coding |
| title_full | A Design of Adaptive Quantizer for MPEG-2 Video Coding |
| title_fullStr | A Design of Adaptive Quantizer for MPEG-2 Video Coding |
| title_full_unstemmed | A Design of Adaptive Quantizer for MPEG-2 Video Coding |
| title_short | A Design of Adaptive Quantizer for MPEG-2 Video Coding |
| title_sort | design of adaptive quantizer for mpeg 2 video coding |
| topic | MPFG DCT coding adaptive quantization scene analysis |
| url | http://www.joconline.com.cn/zh/article/74379499/ |
| work_keys_str_mv | AT sūnjūn adesignofadaptivequantizerformpeg2videocoding AT zhāngwénjūn adesignofadaptivequantizerformpeg2videocoding AT yúsōngyù adesignofadaptivequantizerformpeg2videocoding AT sūnjūn designofadaptivequantizerformpeg2videocoding AT zhāngwénjūn designofadaptivequantizerformpeg2videocoding AT yúsōngyù designofadaptivequantizerformpeg2videocoding |