{"title":"Interactive caustics using local precomputed irradiance","authors":"Chris Wyman, C. Hansen, P. Shirley","doi":"10.1109/PCCGA.2004.1348344","DOIUrl":null,"url":null,"abstract":"Bright patterns of light focused via reflective or refractive objects onto matte surfaces are called \"caustics\". We present a method for rendering dynamic scenes with moving caustics at interactive rates. This technique requires some simplifying assumptions about caustic behavior allowing us to consider it a local spatial property which we sample in a preprocessing stage. Storing the caustic locally limits caustic rendering to a simple lookup. We examine a number of ways to represent this data, allowing us to trade between accuracy, storage, run time, and precomputation time.","PeriodicalId":264796,"journal":{"name":"12th Pacific Conference on Computer Graphics and Applications, 2004. PG 2004. Proceedings.","volume":"41 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2004-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"22","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"12th Pacific Conference on Computer Graphics and Applications, 2004. PG 2004. Proceedings.","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PCCGA.2004.1348344","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 22
Abstract
Bright patterns of light focused via reflective or refractive objects onto matte surfaces are called "caustics". We present a method for rendering dynamic scenes with moving caustics at interactive rates. This technique requires some simplifying assumptions about caustic behavior allowing us to consider it a local spatial property which we sample in a preprocessing stage. Storing the caustic locally limits caustic rendering to a simple lookup. We examine a number of ways to represent this data, allowing us to trade between accuracy, storage, run time, and precomputation time.