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http://dx.doi.org/10.7583/JKGS.2011.11.2.105

An Occlusion Resolution Technique Applying Camera Shots in Close Quater Combat of the Game  

Kim, Bang-Wool (Dept. of Multimedia, Graduate School of Digital Image & Contents, Dongguk University)
Cho, Kyung-Eun (Dept. of Multimedia Engineering, College of Digital Image & Contents, Dongguk University)
Um, Ky-Hyun (Dept. of Multimedia Engineering, College of Digital Image & Contents, Dongguk University)
Publication Information
Journal of Korea Game Society / v.11, no.2, 2011 , pp. 105-114 More about this Journal
Abstract
In a game such as MMORPG, players often see occlusions between primary actors in a shot where shows a close quarter combat. This paper proposes an occlusion resolution technique(MOS) by grafting a medium shot technique and an over-shoulder shot technique to strengthen a confrontation structure. A medium shot technique sets 4 reference points at the up/down/left/right on the sphere of target. An over-shoulder shot technique is a technique of locating the reference points on the side variably. An occluder is replaced with 2 spheres. If a ray is emitted to a reference point from the camera point and intersects a sphere of occluder, it becomes a potential occlusion state. If so, we start to move the camera to the right or left of the occluder, keep moving it while new position of camera is in potential occlusion state, and stop its movement when the occlusion is resolved. Our experiments show that MOS technique consumes operational time of $13.7{\mu}s$ per shot on average, and that it resolves occlusions in 9.26% of ratio on average, and so doesn't have any effect on viewer's sight.
Keywords
Occlusion Resolution; Medium shot and Over shoulder shot; Potential occlusion state;
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