meng yan meaning in English

严梦

Research of error resilience technology for video communication based on h . 263 codec major : signal and information processing data : author : meng yan signature : tutor : zhang erhu liu shichang signature : abstract the reconstructed image quality can be degraded substantially by errors during the transmitting over the communication channel , especially when the video is compressed by temporal and spatial coding ways , which leads to error propagation in frame sequence , so the error resilience procedure should be performed to improve the reconstruction quality
由于通信系统的信道不可避免的存在噪声，传输数据流必然存在误码。对于h . 26x的视频编码流，由于空域和时域的压缩方法以及熵编码方法的应用，即使是一个比特的错误，常会影响一个区域的图像不能正确解码，同时错误的图像还会扩散影响后续数帧图像。因此有必要在标准解码程序的基础上，添加容错功能。