Name
Abstract | ||
|---|---|---|
We present a simple and effective technique for absolute colorimetric camera characterization, invariant to changes in exposure/aperture and scene irradiance, suitable in a wide range of applications including image-based reflectance measurements, spectral pre-filtering and spectral upsampling for rendering, to improve colour accuracy in high dynamic range imaging. Our method requires a limited number of acquisitions, an off-the-shelf target and a commonly available projector, used as a controllable light source, other than the reflected radiance to be known. The characterized camera can be effectively used as a 2D tele-colorimeter, providing the user with an accurate estimate of the distribution of luminance and chromaticity in a scene, without requiring explicit knowledge of the incident lighting power spectra. We validate the approach by comparing our estimated absolute tristimulus values (XYZ data in cdm2) with the measurements of a professional 2D tele-colorimeter, for a set of scenes with complex geometry, spatially varying reflectance and light sources with very different spectral power distribution. |
Year | DOI | Venue |
|---|---|---|
2019 | 10.1111/cgf.13393 | COMPUTER GRAPHICS FORUM |
Keywords | DocType | Volume |
colour,image and video processing,appearance modelling,modelling,image-based rendering,rendering | Journal | 38.0 |
Issue | ISSN | Citations |
1.0 | 0167-7055 | 1 |
PageRank | References | Authors |
0.48 | 0 | 3 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Giuseppe Claudio Guarnera | 1 | 104 | 13.02 |
| Simone Bianco | 2 | 226 | 24.48 |
| Raimondo Schettini | 3 | 1476 | 154.06 |