Photographic tone reproduction for digital images
Proceedings of the 29th annual conference on Computer graphics and interactive techniques
Perceptually based tone mapping of high dynamic range image streams
EGSR'05 Proceedings of the Sixteenth Eurographics conference on Rendering Techniques
| Hi-index | 0.00 |
Realistic images can be computed at interactive frame rates for Virtual Reality applications. Meanwhile, High Dynamic Range (HDR) rendering has a growing success in video games and virtual reality, as it improves the image quality and the player's immersion feeling. We propose a new method, based on a simplified physical model of light propagation, to compute in real time a HDR illumination in a Virtual Environment (VE). Our method allows to re-use existing Low Dynamic Range (LDR) Virtual Databases as input in order to compute the HDR images. Then, from these HDR images, displayable 8-bit images are rendered with a Tone Mapping Operator (TMO) and displayed on a standard display device. The HDR computation and the TMO are implemented in OpenSceneGraph (OSG), working in real time with pixel shaders. The method is illustrated with a practical application where the Dynamic Range is a key rendering issue: driving at night. The VE includes light sources such as road lighting and car headlights.