摘要
结合煤气管道机器人的实际情况和管道成像的分形自相似特性,提出了基于分形理论的煤气管道机器人视频系统.该编解码系统非常简单,不需要进行复杂的计算;而且编解码是在两幅图像之间进行处理,不需要进行图像组的运算,所需内存很少;由于最大限度地利用了相邻两幅图像的相关形,因此在无损的情况下得到的压缩比高出普通的无损压缩2～3倍.在视频流传输中,低比特流(128bit/s)时,其PSNR也达到35dB左右.实验表明,该系统具有快速、高PSNR的特点,可以应用于实际的工业场合.
In a gas pipeline inspection robot system, capturing, coding, transmission and saving of video are key technology. The presented video coding system based on fractal approach is simple and does not need complex computation. The coding system needs small memory because the coding is done between two images. The lossless compression ratio is high up to 5.5. In video transmission, the PSNR under low bit stream (128 bit/s) is up to 35 dB. The experiments show that this scheme is fast and has good PSNR. It can be used in practical industry.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2003年第11期1665-1669,共5页
Journal of Shanghai Jiaotong University
基金
国家高技术研究发展计划(863)项目(2002AA442110)
关键词
视频编码
分形
机器人
煤气管道
Computer vision
Fractals
Gas pipelines
Image compression
Inspection equipment
Signal encoding
Signal to noise ratio
Video signal processing
