Highlighted depth-of-field photography: Shining light on focus
We present a photographic method to enhance intensity differences between objects at varying distances from the focal plane. By combining a unique capture procedure with simple image processing techniques, the detected brightness of an object is decreased proportional to its degree of defocus. A...
| Main Authors: | , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
Association for Computing Machinery
2011
|
| Online Access: | http://hdl.handle.net/1721.1/66082 https://orcid.org/0000-0002-2480-9141 https://orcid.org/0000-0002-3254-3224 |
| Summary: | We present a photographic method to enhance intensity differences between
objects at varying distances from the focal plane. By combining a unique
capture procedure with simple image processing techniques, the detected
brightness of an object is decreased proportional to its degree of defocus. A
camera-projector system casts distinct grid patterns onto a scene to generate
a spatial distribution of point reflections. These point reflections relay a
relative measure of defocus that is utilized in postprocessing to generate a
highlighted DOF photograph. Trade-offs between three different projectorprocessing
pairs are analyzed, and a model is developed to help describe a
new intensity-dependent depth of field that is controlled by the pattern of
illumination. Results are presented for a primary single snapshot design as
well as a scanning method and a comparison method. As an application,
automatic matting results are presented. |
|---|