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Photon Mapping
| Content Provider | Scilit |
|---|---|
| Author | Shirley, Peter Morley, R. Keith |
| Copyright Year | 2003 |
| Description | The biggest problem with path tracing is that it is far too noisy when there are specular surfaces and luminaires that are not large in area. This is because shadow rays reduce noise only for light that comes directly from luminaire to a surface. Light that goes from luminaire to mirror to diffuse surface will create a noisy reflected pattern. The most popular way to solve this problem is to supplement a path tracer with photon mapping. This method sends out energy packets from the luminaires and marks the scene with them. Where there are many photons, it is bright. It will turn out that we need too many photons if we try to do all lighting this way, but using photons after the first reflection turns out to be a very effective way to help a path tracer work well. Book Name: Realistic Ray Tracing |
| Related Links | https://content.taylorfrancis.com/books/download?dac=C2010-0-47304-1&isbn=9781439864449&doi=10.1201/9781439864449-14&format=pdf |
| Ending Page | 214 |
| Page Count | 6 |
| Starting Page | 209 |
| DOI | 10.1201/9781439864449-14 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2003-07-07 |
| Access Restriction | Open |
| Subject Keyword | Book Name: Realistic Ray Tracing Visual and Performing Arts Photons Shadow Mirror Supplement Packets Directly Bright |
| Content Type | Text |
| Resource Type | Chapter |
