Color filter modules for plenoptic xyz imaging systems
AssigneeRicoh Company, Ltd.
InventorsLingfei Meng, Kathrin Berkner, Ivana Tosic
Life of this patent
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Abstract
A method for designing a color filter module used in a plenoptic XYZ imaging system. In one approach, the color filter module is spatially partitioned into filter cells, and the spatial partition is designed by considering data captured at the sensor in light of variations in ΔE.
Claims34
A computer-implemented method for designing a color filter module for use in a plenoptic XYZ imaging system that captures XYZ images of an object, the plenoptic XYZ imaging system comprising a primary imaging subsystem, a secondary imaging array and a sensor array, the sensor array capturing multiplexed images of the object, the color filter module positioned approximately in a conjugate plane to the sensor array to provide spectral filtering of the multiplexed images, the computer-implemented method comprising a computer system performing the steps of:
- receiving a model of an object to be imaged by the plenoptic XYZ imaging system;
- receiving a candidate design for the color filter module, the candidate design for the color filter module including a candidate spatial partition of filter cells within the color filter module, the filter cells implementing an X filter response, a Y filter response and a Z filter response;
- modeling operation of the plenoptic XYZ imaging system with the candidate color filter module;
- calculating variation of ΔE as a function of the modelled operation;
- and
- modifying the candidate spatial partition of filter cells based on the calculated variation of ΔE.
A non-transitory computer readable medium containing software instructions that, when executed on a computer system, cause the computer system to perform a method for designing a color filter module for use in a plenoptic XYZ imaging system that captures XYZ images of an object, the plenoptic XYZ imaging system comprising a primary imaging subsystem, a secondary imaging array and a sensor array, the sensor array capturing multiplexed images of the object, the color filter module positioned approximately in a conjugate plane to the sensor array to provide spectral filtering of the multiplexed images, the computer-implemented method comprising:
- receiving a model of an object to be imaged by a plenoptic XYZ imaging system,
- receiving a candidate design for the color filter module, the candidate design for the color filter module including a candidate spatial partition of filter cells within the color filter module, the filter cells implementing an X filter response, a Y filter response and a Z filter response;
- modeling operation of the plenoptic XYZ imaging system with the candidate color filter module;
- calculating variation in ΔE as a function of the modelled operation;
- and
- modifying the candidate spatial partition of filter cells based on the calculated variation in ΔE.
Dependencies are inferred from the claim text.