Photographic Depth of Field Blur Rendering

Pichard,C., Michelin,S., Tubach,O.

We describe a new method for depth of field blur simulation used for compositing real and synthetic images in a realistic way. Existing methods don?t simulate accurately the depth of field blur produced by photographic equipment. The problem is twofold: photometric and geometric. Existing methods based on convolution don?t produce a realistic photometric rendering compared to real photo and the photographic blur contains patterns associated with the diaphragm shape, neither handled by existing methods. Our method, based on image processing, address this two issues by following the photographic image creation process. It can be used on synthetic or real images, essentially for special effects compositing.