One novel UAV aerial video compression method
-
摘要: 针对无人机机载视频图像由于受到天气或电磁波干扰产生的异常帧引起的压缩码率波动问题,提出了一种基于对图像进行预分析,剔除异常帧后进行压缩编码的方法.对于几种常见的异常帧进行建模,分析了其图像信号特点,结合信号统计特性和其信息熵量度,可靠地检测出视频序列中的异常帧, 最后对剔除了异常帧的序列应用H.264标准进行压缩编码.理论分析和试验结果都证明此方法在不丢失无人机机载视频图像序列信息量的情况下,可以保持压缩码率恒定并提高了其压缩效率.Abstract: To resolve the video compression bit rate fluctuation due to odd frames generated by the bad weather or electromagnetic (EM) interference in aerial video sequences from unmanned aerial vehicle (UAV), a new video compression method which analyze video sequences in advance and remove the detected odd frames before video compression was proposed. By constructing models of several popular types of odd frames, the characters of odd frame signals were analyzed. With combination of signal statistics and information entropy measurements, the odd frames in video sequence were robustly detected. Finally, the video sequence without odd frames was compressed with the new H.264 standard. Both theoretic analyses and experiments prove that this method greatly improves video compression efficiency of aerial video sequences from UAV and keeps constant compression bit rate, meanwhile does not lose any useful information.
-
Key words:
- odd frame /
- UAV /
- information entropy /
- video compression
-
[1] Miller J R, Amidi O, Delouis M. Arctic test flights of the CMU autonomous helicopter Proceedings of the Association for Unmanned Vehicle Systems International. Baltimore,MD: , 1999 [2] 刘荣科,张晓林.无人机载图像实时传输方案研究[J].北京航空航天大学学报, 2002,28(2):208-212 Liu Rongke, Zhang Xiaolin. A real-time image transmission scheme for pilotless aircraft[J]. Journal of Beijing University of Aeronautics and Astronautics, 2002, 28(2):208-212 (in Chinese) [3] Sullivan G J, Wiegand T. Video compression from concepts to the H.264/AVC standard[J]. Proceedings of the IEEE, 2005, 93(1):18-31 [4] Sullivan G J. The H.264/MPEG-4 AVC video coding standard and its deployment status SPIE Visual Computing and Image Processing. Beijing:SPIE, 2005:710-719 [5] Wiegand T, Sullivan G J, Bjontegaard G,et al. Overview of the H.264/ AVC video coding standard[J]. IEEE Transaction on Circuits and Systems for Video Technology, 2003, 13(7):560-576 [6] Lappalainen V, Hallapuro A, Hamalainen T D. Complexity of optimized H.26L video coding implementation[J]. IEEE Transaction on Circuits and Systems for Video Technology, 2003, 13(7):717-725 [7] Zheng Wujie, Yuan Jinhui, Wang Huiyi, et al. A novel shot boundary detection framework SPIE Visual Computing and Image Processing. Beijing:SPIE, 2005:.410-419 [8] Suhring K. Jovint Video Team of ITU-T and ISO/IEC JTC 1. H.264/AVC Joint Model(JM) . 2006. http://iphome.hhi.de/suehring/tm
点击查看大图
计量
- 文章访问数: 2854
- HTML全文浏览量: 76
- PDF下载量: 1125
- 被引次数: 0