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US 11,238,662 B2Granted
Optimal luminance mapping for augmented reality devices
AssigneeApple Inc.
InventorsRalf Habel, Anselm Grundhoefer
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Abstract
Various implementations disclosed herein adjust the luminance values of an image to improve the appearance of the image on an augmented reality device. In some implementations, the luminance values of an image are adjusted so that the image can be displayed on an augmented reality device (e.g., with background luminance) such that the image will be perceived more similarly to how the image would be perceived otherwise (e.g., on a device without background luminance). In some implementations, an image is adjusted based on an estimate of human perception of luminance that is not linear.
Claims20
A method comprising:
- at an electronic device having a processor:
- identifying first luminance values corresponding to pixels of an image, wherein the first luminance values result in human perception of relative lightness differences amongst the pixels;
- determining second luminance values corresponding to the pixels of the image adjusted for display on an augmented reality device, wherein the second luminance values are determined based on the first luminance values, a non-linear relationship between luminance and perception, and a third luminance associated with a physical environment, wherein the second luminance values are determined so that the second luminance values differ from the first luminance values and result in perception of relative lightness differences amongst the pixels that are the same as the perception of relative light differences amongst the pixels resulting from the first luminance values;
- and
- displaying the image using the second luminance values on the augmented reality device, wherein the augmented reality device is configured to provide a view comprising the image and the physical environment.
2 more elements
A device comprising:
- a non-transitory computer-readable storage medium;
- and
- one or more processors coupled to the non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium comprises program instructions that, when executed on the one or more processors, cause thea system to perform operations comprising:
- identifying first luminance values corresponding to pixels of an image, wherein the first luminance values result in human perception of relative lightness differences amongst the pixels;
- determining second luminance values corresponding to the pixels of the image adjusted for display on an augmented reality device, wherein the second luminance values are determined based on the first luminance values, a non-linear relationship between luminance and perception, and a third luminance associated with a physical environment, wherein the second luminance values are determined so that the second luminance values differ from the first luminance values and result in perception of relative lightness differences amongst the pixels that are the same as the perception of relative light differences amongst the pixels resulting from the first luminance values;
- and
- displaying the image using the second luminance values on the augmented reality device, wherein the augmented reality device is configured to provide a view comprising the image and the physical environment.
4 more elements
A non-transitory computer-readable storage medium, storing program instructions computer-executable on a computer to perform operations comprising:
- identifying first luminance values corresponding to pixels of an image, wherein the first luminance values result in human perception of relative lightness differences amongst the pixels;
- determining second luminance values corresponding to the pixels of the image adjusted for display on an augmented reality device, wherein the second luminance values are determined based on the first luminance values, a non-linear relationship between luminance and perception, and a third luminance associated with a physical environment, wherein the second luminance values are determined so that the second luminance values differ from the first luminance values and result in perception of relative lightness differences amongst the pixels that are the same as the perception of relative light differences amongst the pixels resulting from the first luminance values;
- and
- displaying the image using the second luminance values on the augmented reality device, wherein the augmented reality device is configured to provide a view comprising the image and the physical environment.
1 more element
Dependencies are inferred from the claim text.