Method and system for eliminating artifacts in overlapped projections
AssigneeInternational Business Machines Corporation
InventorBengt-Olaf Schneider
Life of this patent
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Abstract
A method (and system) of eliminating visible artifacts in overlapped projections produced by a plurality of projectors, includes in areas outside of the overlap areas, raising an intensity of predetermined color pixels to match a level of the predetermined color in the overlap areas, and simultaneously with the raising of the intensity, scaling values of pixels in the overlap areas such that the values do not exceed the maximum pixel value of a single projector of the plurality of projectors.
Claims45
A method of eliminating visible artifacts in overlapped projections produced by a plurality of projectors, comprising:
- performing a calibration process comprising:
- adjusting an intensity of first predetermined color pixels in areas outside of overlap areas to match an intensity of the first predetermined color pixels in the overlap areas;
- and
- scaling values of second predetermined color pixels in the overlap areas such that said values do not exceed a maximum pixel value of a single projector of said plurality of projectors.
A method of eliminating visible artifacts in overlapped projections produced by a plurality of projectors, comprising:
- performing a calibration process by adjusting first predetermined color pixels in areas outside of overlap areas, and scaling values of second predetermined color pixels in said overlap areas;
- after performing a calibration process for inputs to said projectors, determining areas in which each of a plurality of displayed pixels are located;
- applying a mapping function to said displayed pixels;
- and
- displaying said newly-mapped pixels.
A projection system, comprising:
- a display screen;
- a plurality of projectors each for producing a respective image portion for being displayed on said screen, a plurality of image portions forming a composite image having a plurality of pixels, said plurality of image portions having overlapping image areas;
- and
- an intensity adjuster, coupled to said projectors, for adjusting an intensity of first predetermined color pixels of said plurality of pixels across said screen, to achieve uniform intensity of said first predetermined color pixels,
- wherein said system performs a calibration process by adjusting an intensity of said first predetermined color pixels in non-overlapping areas to match an intensity of the predetermined color pixels in the overlapping image area, and scaling values of second predetermined color pixels in the overlapping image area such that said values do not exceed a maximum pixel value of a single prompter of said plurality of projectors.
A projection system, comprising:
- a plurality of projectors for projecting image portions onto said screen, at least some of said image portions having overlapping portions;
- wherein in areas outside of the overlap areas, an intensity of predetermined color pixels is adjusted to match the predetermined color level in the overlap areas, and simultaneously, the pixel values are scaled in the overlap areas such that they never exceed the maximum pixel value of a single projector.
A signal-bearing medium tangibly embodying a program of machine-readable instructions executable by a digital processing apparatus to perform a method for computer-implemented eliminating visible artifacts in overlapped projections produced by a plurality of projectors, said method comprising:
- in areas outside of the overlap areas, adjusting an intensity of predetermined color pixels to match an intensity of the predetermined color pixels in the overlap areas;
- and
- simultaneously with said adjusting, scaling values of pixels in the overlap areas such that said values do not exceed the maximum pixel value of a single projector of said plurality of projectors.
Dependencies are inferred from the claim text.