誤り耐性を有するマルチビュー映像ストリーミングに関する研究

多视点技术有望成为下一代视觉通信技术，而多视点技术是自由视点电视等多种应用的基本问题之一。在自由视点视频传输中，用户可以选择自己喜欢的视角。为了提供自由的视点选择，服务器根据用户的视点请求，以纹理加深度的格式发送最近的两个视点，以便用户在随后使用基于深度图像的绘制(DIBR)技术合成所请求的视角的视点。为了处理容易突发丢失的无线信道，我们提出了在视频内容使用多描述编码(MDC)编码后在两条路径上传输的方法，用于自由视点视频流。相关研究成果已被IEEE《信号处理专题精选》接受。通常情况下，电池寿命对移动用户至关重要，如何在能耗和接收视频质量之间取得平衡成为一个严重的问题。我们对这个问题进行了研究，并在《网络与计算机应用杂志》上发表了这一结果。HetNets是4G和5G的主要主题。如何在由多个小区(基站)组成的场景中传输视频将成为一个重要的问题。在用户不同的视频请求下，如何协调小区间的推断是一个挑战。一些初步成果已经在IEEE VTC2014春季会议上公布，延期正在提交中。同时，我们正在寻找更多多视角的应用，例如在博物馆展览中。

Multiview is expected to be the next generation visual communication and multi-view is one of the fundamental problems for various applications such as free viewpoint TV.In free viewpoint video transmission, users can select any view angle he prefers. To provide the free viewpoint selection, server will send the two nearest neighboring view in texture plus depth format upon user’s view request, so that the user can synthesize the view at the requested viewing angle afterwards using the depth image based rendering (DIBR) techniques. To handle the burst-loss prone wireless channels, we proposed to transmit the video contents over two paths after encoding them using the multiple descriptions coding (MDC) for the free viewpoint video streaming. The related results have been accepted to IEEE Journal of Selected Topics in Signal Processing.Orthogonally, battery life consumption is critical for mobile users, how to balance the energy consumption and the received video quality becomes a serious problem. We investigate this problem and publish the results in Journal of Network and Computer Applications.HetNets is a major topic in 4G and 5G. How to deliver the video in the scenarios composed of multiple cells (base station) will be become an important issue. The challenges exist in how to coordinate the intercell inferences given users’ diverse video requests. Some preliminary results have been published in IEEE VTC2014 spring and an extension is under submission.At the same time, we are looking for more applications of the multi-view such as for the museum exhibition.