宽色域视频图像多路径并行传输研究

Research on multi⁃path parallel transmission of wide color gamut video image

为了在控制宽色域视频图像多路径传输时延的同时,增强视频传输质量,提出宽色域视频图像多路径并行传输方法。根据色域标准条件和颜色测量原理,计算并获得色域边界的具体数值。建立宽色域视频图像信息之间的扩展映射关系,在此基础上分别定义数据包中的周期性数据帧、非周期性数据帧,提高了多路径环境中的传输稳定性。通过发现节点并建立链接的处理方式,完成视频图像的多路径并行传输编码,实现了宽色域视频图像多路径并行传输。实例分析结果表明,与Kirsch算子图像分割法相比,多路径并行传输方法在处理宽色域视频图像时始终保持较低的传输时延(未超过30 ms),且在实验过程中显示带宽均高于700 Kb/s,实现了增强视频传输质量的目的。

In order to enhance the quality of video transmission while controlling the multi⁃path transmission delay of the wide color gamut video image,a multi⁃path parallel transmission method for the wide color gamut video image is proposed.The specific values of color gamut boundary are calculated and obtained according to the standard condition of color gamut and the principle of color measurement.The extended mapping relationship between information of video images with wide color gamut is established.On the basis,the periodical data frame and aperiodic data frame in the data packet are defined to improve the transmission stability in the multi⁃path environment.The multi⁃path parallel transmission coding of the video image is implemented by finding nodes and establishing the processing mode of links to realize successful application of the multi⁃path parallel transmission method for the wide color gamut video images.The results of analysis on some instances show that,in comparison with the Kirsch operator image segmentation method,the multi⁃path parallel transmission method can keep the transmission delay lower than 30 ms when processing the wide color gamut video image and its displaying bandwidth is higher than 700 Kb/s in the experiment.Therefore,this method achieves the purpose of enhancing the video transmission quality.