J
Janne Kontkanen
Researcher at Google
Publications - 32
Citations - 957
Janne Kontkanen is an academic researcher from Google. The author has contributed to research in topics: Rendering (computer graphics) & Global illumination. The author has an hindex of 11, co-authored 32 publications receiving 882 citations. Previous affiliations of Janne Kontkanen include Helsinki University of Technology.
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Journal ArticleDOI
Jump: virtual reality video
Robert Anderson,David Gallup,Jonathan T. Barron,Janne Kontkanen,Noah Snavely,Carlos Hernández,Sameer Agarwal,Steven M. Seitz +7 more
TL;DR: The distortions inherent to ODS when used for VR display as well as those introduced by the capture method are discovered and analyzed to show that they are small enough to make this approach suitable for capturing a wide variety of scenes.
Proceedings ArticleDOI
Ambient occlusion fields
Janne Kontkanen,Samuli Laine +1 more
TL;DR: A novel real-time technique for computing inter-object ambient occlusion where for each occluding object, a field in the surrounding space is precompute that encodes an approximation of the occlusions caused by the object.
Proceedings ArticleDOI
Incremental instant radiosity for real-time indirect illumination
TL;DR: The main contribution is an algorithm for reusing the VPLs and incrementally maintaining their good distribution, where only a few shadow maps need to be rendered per frame as long as the motion of the primary light source is reasonably smooth.
Journal ArticleDOI
A meshless hierarchical representation for light transport
Jaakko Lehtinen,Matthias Zwicker,Emmanuel Turquin,Janne Kontkanen,Frédo Durand,François X. Sillion,Timo Aila +6 more
TL;DR: A hierarchical function basis induced by scattered data approximation is introduced, allowing the hierarchical representation of illumination on complex objects and is demonstrated in a novel precomputed direct-to-indirect light transport algorithm that greatly increases the complexity of scenes that can be handled by PRT approaches.
Journal ArticleDOI
Coherent out-of-core point-based global illumination
TL;DR: This work describes a new technique for coherent out‐of‐core point‐based global illumination and ambient occlusion that uses minimal I/O and stores data on disk compactly and in coherent chunks for later access during shading.