6533b7d8fe1ef96bd126a2e6
RESEARCH PRODUCT
The problem of spatial homogeneity in an LCoS projector
Dolores De FezM. Carmen García-domeneM. José Luquesubject
LightnessComputer scienceCharacterizationColor reproductionComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION02 engineering and technology01 natural scienceslaw.invention010309 opticsPosition (vector)law0103 physical sciencesComputer visionLCoS projectorElectrical and Electronic EngineeringChromaticityProjection (set theory)ÓpticaSpatial homogeneitybusiness.industrySigmoid function021001 nanoscience & nanotechnologyGridAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsLiquid crystal on siliconProjectorCalibrationArtificial intelligence0210 nano-technologybusinessdescription
Abstract Video projectors allow interesting applications in vision sciences since they provide a large projection area. We have colorimetrically characterized a LCoS projector using a mathematical model requiring additivity and constancy of the primaries -a sigmoid function in our case. Significant differences in chromaticity in the CIELAB space, but not in lightness, were found between the center and the corners of the screen. The lack of spatial homogeneity led us to estimate the parameters of the model as a function of spatial position, using different strategies. The best result was obtained by interpolating the values of the parameters of the model determined from experimental measurements in a regular spatial grid on the screen.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-01-01 |