Abstract
A 360 video is stored as a 2D rectangle video through projection and packing. There are many projections and packing layouts, and their efficiency has a great influence on the resulting 360 video quality. In order to improve the quality and reduce the storage waste, we propose a projection algorithm using Peirce quincuncial and conformal mapping. The algorithm projects a hemisphere of the 360 video onto a disk by stereoscopic projection; then uses the Schwarz-Christoffel transformation to conformally map the disk to a square; so does another hemisphere. Then the two squares are stitched together continuously to obtain a 2D rectangle video. The experimental results show that our conformal projection algorithm can generate 360 videos with better continuity and smoother pixel distribution when compared to other commonly used algorithms.
| Translated title of the contribution | A Conformal Projection Algorithm for 360 Videos |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 1450-1456 |
| Number of pages | 7 |
| Journal | Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao/Journal of Computer-Aided Design and Computer Graphics |
| Volume | 31 |
| Issue number | 8 |
| DOIs | |
| State | Published - 1 Aug 2019 |