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US 10,600,213 B2Granted
Method and apparatus for color-preserving spectrum reshape
AssigneeFocal Sharp, Inc.
InventorKuang-Tsu Shih
Life of this patent
Estimating the term…
Abstract
A system include an light emitter to generate a primary light, a filter to filter the primary light to substantially remove a spectrum energy in a wavelength band, a display device to present visual content using the filtered primary light, and a processing device to receive a visual content, calculate, in view of the filtered primary light, a metamer of the visual content, and provide, to the display device, the metamer of the visual content to display in view of the filtered light.
Claims22
A system, comprising:
- a light emitter to generate a primary light comprising at least three primary colors;
- an optical light blocker, wherein the optical blocker is to optically filter the primary light to remove a substantial portion of spectrum energy within a wavelength band corresponding to a color of the primary light and to substantially preserve the spectrum energy outside the wavelength band;
- a display device to present a visual content using the optically filtered primary light;
- and
- a processing device to:
- receive the visual content;
- calculate, taking into account an effect of the optically filtered primary light on color appearance, a metamer of the visual content to compensate for the effect of the optically filtered primary light, wherein the calculated metamer when presented on the display device substantially preserves color appearance of the visual content rendered on the display device and substantially preserves hue of the visual content by means of digital image processing that compensates for the effect of the optically filtered primary light on the color appearance, and wherein taking into account an effect of the optically filtered primary light on color appearance comprises taking into account of a spectral sensitivity profile associated with retina cells, an emission spectrum associated with a pixel, and a spectral transmittance function corresponding to the color of the primary light;
- and
- provide, to the display device, the metamer of the visual content to display using the optically filtered light.
6 more elements
A method comprising:
- receiving, by a processing device, a visual content to be displayed on a display device;
- applying an optical light blocker, wherein the optical blocker is to optically filter a primary light comprising at least three primary colors, emitted from a light source associated with the display device, to remove a substantial portion of spectrum energy within a wavelength band corresponding to a color of the primary light and to substantially preserve the spectrum energy outside the wavelength band;
- calculating, taking into account an effect of the optically filtered primary light on color appearance, a metamer of the visual content to compensate for the effect of the optically filtered primary light, wherein the calculated metamer when presented on the display device substantially preserves color appearance of the visual content rendered on the display device and substantially preserves hue of the visual content by means of digital image processing that compensates for the effect of the optically filtered primary light on the color appearance, and wherein taking into account an effect of the optically filtered primary light on color appearance comprises taking into account of a spectral sensitivity profile associated with retina cells, an emission spectrum associated with a pixel, and a spectral transmittance function corresponding to the color of the primary light;
- and
- providing, to the display device, the metamer of the visual content to display using the optically filtered light.
2 more elements
A non-transitory machine-readable storage medium storing instructions which, when executed, cause a processing device to perform operations comprising:
- receiving, by the processing device, a visual content to be displayed on a display device, wherein the display device is associated with a primary light comprising at least three primary colors, wherein the primary light is optically filtered by an optical light blocker, and wherein the optical blocker is to remove a substantial portion of a spectrum energy within a wavelength band corresponding to a color of the primary light and to substantially preserve the spectrum energy outside the wavelength band;
- calculating, taking into account an effect of the optically filtered primary light on color appearance, a metamer of the visual content to compensate for the effect of the optically filtered primary light, wherein the calculated metamer when presented on the display device substantially preserves color appearance of the visual content rendered on the display device and substantially preserves hue of the visual content by means of digital image processing that compensates for the effect of the optically filtered primary light on the color appearance, and wherein taking into account an effect of the optically filtered primary light on color appearance comprises taking into account of a spectral sensitivity profile associated with retina cells, an emission spectrum associated with a pixel, and a spectral transmittance function corresponding to the color of the primary light;
- and
- providing, to the display device, the metamer of the visual content to display using the optically filtered light.
1 more element
Dependencies are inferred from the claim text.