Panoramic video contains 360-degree video content and it is convenient to draw the content that the user wants to watch on the head-Mount display (HMD) of the virtual reality display device. However, few encoders code panoramic video directly. Panoramic video content needs to be projected to a compression-friendly rectangular plane first. Then the existing video coding standards such as AVC, HEVC, VVC, AVS are used to code the panoramic video content. In order to improve the panoramic video coding efficiency, IEEE 1857.9 immersive video content coding working group was established to develop efficient immersive video projection and coding methods. This paper presents an overview of the panoramic video projection schemes in Immersive Visual Content Coding Standard IEEE 1857.9.

中文翻译：

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沉浸式视觉内容编码 IEEE 1857.9 标准中的全景视频投影方案概述


全景视频包含360度的视频内容，可以方便地将用户想要观看的内容绘制在虚拟现实显示设备的头戴式显示器(HMD)上。然而，很少有编码器直接编码全景视频。全景视频内容需要首先投影到压缩友好的矩形平面。然后利用现有的AVC、HEVC、VVC、AVS等视频编码标准对全景视频内容进行编码。为了提高全景视频编码效率，IEEE 1857.9沉浸式视频内容编码工作组成立，开发高效的沉浸式视频投影和编码方法。本文概述了沉浸式视觉内容编码标准 IEEE 1857.9 中的全景视频投影方案。