Polar square projection for panoramic video
PubDate: March 2018
Teams: Peking University Shenzhen；Shenzhen China Star Optoelectronics Semiconductor Display Technology Co. Ltd
Writers: Yueming Wang ; Ronggang Wang ; Zhenyu Wang ; Kui Fan ; Yufan Deng ; Shensian Syu ; Ming-Jong Jou Shenzhen
Panoramic video provides an immersive experience by presenting a 360° spherical video content. Due to the limitations of coding and storage technology, the spherical panoramic video needs to be projected onto the two-dimensional plane for storage and encoding. In this paper, we propose a polar square projection scheme. We project the area near the poles of the sphere into two square planes and a latitude circle on sphere is projected to a square circle on squares plane, in addition, the rest of area on sphere is projected into a rectangle by means of equal area projection. Experimental results show our proposed projection can obtain a gain of 11.63% BD-rate compared to the equirectangular projection.