An Integer Incremental AOI Algorithm for Progressive Downloading of Large Scale VRML Environments

Agile Development of WebVR Applications

“…How to get interactive downloading of large scale WebVR scenes on Internet always is a bottleneck problem of DVE. An incremental SMLAOI algorithm is proposed for progressive downloading of large scale VRML/X3D environments progressively [19].…”

EMP: The Framework of a Parallel Delivery Scheme for Large Scale Virtual Worlds

“…AOI Based Downloading in C/S Many publications have mentioned AOI (Area of Interest) [2,[6][7][8], which has been a fundamental method to download large scale virtual scenes progressively. AOI is a circular area with the user's visibility distance r as its radius and viewpoint V as its center, all virtual objects overlapped by AOI could be treated as CPVS (current potentially visible scenes) that need to download at V reasonably.…”

“…A user only needs to download the CPVS when stands at one place, the IPVS (Incremental PVS) could be postponed to deliver until viewpoint changes. To compute the IPVS and DPVS (Decremental PVS) when user's viewpoint moves, a reference has proposed an incremental virtual scenes culling algorithm in [2]. Compares with the classic "down-and-play" way, AOI based downloading is noted as a new term "down-while-play".…”

“…LOD (Level of Details), PM (Progressive Mesh) [3,4] can be took in AOI based downloading to reduce data that need to deliver via network. AOI Based Downloading in P2P Overlay AOI based virtual scenes downloading in C/S has shown its advantage, however, due to inherent flaws: (1) the server often become bottleneck as resources will be exhausted when the number of users keeps increasing; (2) there is a risk of server failure. To solve this bottleneck, P2P (Peer-to-Peer) [1] might be a good means and it has attracts more attention in virtual scenes transmission.…”