摘要
为了评估无线局域网中视频图像的传输效果,在NS2平台上仿真了基于Evalvid机制的视频流在无线局域网环境下的传输过程,总结归纳了视频流在无线局域网传输过程中的仿真方法,得到了视频图像传输的平均PSNR值和平均SSIM值,分析了视频编码参数和网络参数对视频图像质量的影响。通过对比原始视频图像和重建视频图像,证明了该方法可以有效评估无线局域网环境下视频图像的传输质量。
For the purpose of estimating image transmission in WLAN, the successful transmission of vid- eo streams grounded on Evalvid mechanism is achieved by simulation with NS2. A summary of the method to simulate the image transmission process of video streams in WLAN is also provided. The average data of PSNR and SSIM during the transmission of video streams is got. An analysis is conducted on the effect of video encoding parameters and network parameters upon the performance of image transmission. With the comparison of original video and decoded video, the conclusion is drawn that this method is a- vailable to estimate the performance of image transmission in WLAN.
出处
《中国电子科学研究院学报》
北大核心
2015年第4期395-400,共6页
Journal of China Academy of Electronics and Information Technology
基金
国家科技重大专项基金资助项目(2011ZX03002)
