Multi-projector system and method
AssigneeHewlett-Packard Development Company, L.P.
InventorsNelson Liang An Chang, Niranjan Damera-Venkata
Life of this patent
Estimating the term…
Abstract
A method for reducing view-dependent artifacts in a multi-projector system includes the steps of measuring, from multiple viewpoints, projection characteristics of an image projected by a multi-projector system, estimating view-dependent projection parameters that can reduce view-dependent artifacts, and computing rendering parameters for each projector so as to reduce the view-dependent artifacts.
Claims19
A method for reducing view-dependent artifacts in a multi-projector system, the method being carried out by a computer device having a processor and system memory, comprising the steps of:
- measuring, from multiple viewpoints, and inputting into the computer, data relating to projection characteristics of each of a plurality of projectors of the multi-projector system, the plurality of projectors producing a composite image of an image frame;
- the computer remapping, for each projector, the projection characteristics from the multiple viewpoints to a common coordinate system;
- the computer estimating view-dependent projection parameters for each projector based on the remapped projection characteristics;
- and
- the computer computing rendering parameters for each projector based on the estimated view-dependent projection parameters so as to reduce view-dependent artifacts.
A non-transitory computer-readable storage media comprising machine-readable instructions for causing a computing device including a processor and system memory to perform the steps of:
- receiving data representing measurements, from multiple viewpoints, of projection characteristics of a plurality of projectors producing a composite image of an image frame;
- remapping, for each projector, the projection characteristics from the multiple viewpoints to a common coordinate system;
- estimating view-dependent projection parameters for each projector based on the remapped projection characteristics;
- and
- computing rendering parameters for each projector based on the estimated view-dependent projection parameters so as to transform a projection data stream to the projector to reduce view-dependent artifacts.
A projection system, comprising:
- a plurality of projectors, each oriented to project an image to a display location to produce a composite image of an image frame;
- a plurality of camera locations, selected to allow a camera to obtain images of the display location from multiple vantage points;
- and
- a controller, including a computer processor and system memory, coupled to the projectors, the controller to receive image data from a camera at each camera location, to measure projection characteristics represented by the data for each projector, to remap the projection characteristics for each projector from the multiple vantage points to a common reference point, to estimate view-dependent projection parameters for each projector based on the remapped projection characteristics, and to compute rendering parameters for a projection data stream for each projector based on the estimated view-dependent projection parameters to reduce view-dependent artifacts.
Dependencies are inferred from the claim text.