During the video image coding transmission, there is always a lot of noise. When the gray distortion rate of video image is 10.56–50.56%, the image packet loss rate is high. Therefore, an algorithm of fault-tolerant coding transmission of video image based on orthogonal frequency division multiplexing (OFDM) technology was put forward. Multi description video coding was performed based on low frequency prediction. When the image only transmitted partial description, it was necessary to recover the lost wavelet coefficients by error concealment. The bit stream was controlled by adaptive control algorithm. The multi-carrier model based on multi-dimensional modulation was designed by OFDM technology, so that the algorithm could be achieved. In order to prove low packet loss rate, the proposed algorithm was compared with the original algorithm when the gray distortion rate of video image was 10.56–50.56%. Experimental results show that the packet loss rate of source coding transmission and channel coding transmission of the proposed algorithm are lower than the those of original algorithm. Meanwhile, the transmission performance of fault-tolerant coding is improved.

在视频图像编码传输过程中，总是存在大量噪声。当视频图像灰度失真率为10.56-50.56%时，图像丢包率较高。为此，提出了一种基于正交频分复用(OFDM)技术的视频图像容错编码传输算法。基于低频预测进行多描述视频编码。当图像只传输部分描述时，需要通过错误隐藏来恢复丢失的小波系数。比特流由自适应控制算法控制。采用OFDM技术设计了基于多维调制的多载波模型，实现了该算法。为了证明低丢包率，当视频图像灰度失真率为10.56-50.56%时，将提出的算法与原算法进行对比。实验结果表明，所提算法的信源编码传输和信道编码传输的丢包率均低于原算法。同时，提高了容错编码的传输性能。