Rapid estimation of effective illuminance patterns for projected light fields
First Claim
1. A method for estimating an effective luminance pattern representing a distribution of projected light in a display apparatus, the method comprising:
- determining driving values for one or more light sources arranged to project light;
determining an effective luminance pattern for the projected light by;
for each of the one or more light sources determining a contribution to the effective luminance pattern for each of a plurality of components of a point spread function for the light source; and
,combining the contributions of the components the effective luminance pattern to yield an estimated effective luminance pattern;
wherein one of the plurality of components consists essentially of a higher-order part of a set of point spread function values and a second one of the components consists essentially of a lower-order part of the set of point spread function values and the set of point spread function values comprises 16-bit words and the higher-order and lower-order parts of the set of point spread function values each comprises 8-bit words.
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Abstract
A method for estimating an effective luminance pattern representing a distribution of projected light in a display apparatus involves determining driving values for one or more light sources arranged to project light. The light sources are solid-state light sources such as light-emitting diodes in some embodiments. The method determines an effective luminance pattern for the projected light by determining contributions to the effective luminance pattern for different components of a point spread function and then combining the contributions of the components the effective luminance pattern to yield an estimated effective luminance pattern.
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Citations
24 Claims
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1. A method for estimating an effective luminance pattern representing a distribution of projected light in a display apparatus, the method comprising:
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determining driving values for one or more light sources arranged to project light; determining an effective luminance pattern for the projected light by; for each of the one or more light sources determining a contribution to the effective luminance pattern for each of a plurality of components of a point spread function for the light source; and
,combining the contributions of the components the effective luminance pattern to yield an estimated effective luminance pattern; wherein one of the plurality of components consists essentially of a higher-order part of a set of point spread function values and a second one of the components consists essentially of a lower-order part of the set of point spread function values and the set of point spread function values comprises 16-bit words and the higher-order and lower-order parts of the set of point spread function values each comprises 8-bit words. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. Display apparatus comprising a controller configured to estimate an effective luminance pattern representing a distribution of projected light in the display apparatus, by:
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determining driving values for one or more light sources arranged to project light; determining an effective luminance pattern for the projected light by; for each of the one or more light sources determining a contribution to the effective luminance pattern for each of a plurality of components of a point spread function for the light source; and
,combining the contributions of the components the effective luminance pattern to yield an estimated effective luminance pattern; wherein one of the plurality of components consists essentially of a higher-order part of a set of point spread function values and a second one of the components consists essentially of a lower-order part of the set of point spread function values and the set of point spread function values comprises 16-bit words and the higher-order and lower-order parts of the set of point spread function values each comprises 8-bit words. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification