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Online updating method for image compression dynamic regulation
Authors
任士远
冯安祥
+7 more
刘明第
周雷
王立勇
王闯
花海洋
赵大威
赵怀慈
Publication date
19 June 2013
Publisher
Abstract
本发明涉及一种图像压缩动态调整的在线更新方法,具体的说是在无线图像传输系统中通过动态计算修改量化系数QP实现图像压缩的动态调整。本发明根据H.264国际标准对YUV图像进行帧内预测和帧间预测,实现空间和时间相关性压缩;根据图像内容信息计算一个图像序列的关键参考帧的QP值;根据关键参考帧和其它帧的差异信息,计算其它帧的能量阈值,确定所述图像序列中所有帧的QP值;根据所述图像序列中所有帧的QP值,对所述图像序列进行量化处理,完成图像编码压缩。本发明可以根据图像内容信息进行动态修改量化系数QP的视频动态压缩,完成无线图像传输系统中图像压缩码率的在线更新
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Shenyang Institute of Automation,Chinese Academy Of Sciences
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Last time updated on 12/02/2018