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 each of the components comprises a set of point spread function values, a first one of the plurality of components comprises a plurality of higher order bits of the point spread function values and excludes a plurality of lower order bits of the point spread function values and a second one of the plurality of components comprises the plurality of lower order bits of the point spread function values and excludes the plurality of higher order bits of the point spread function values.
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Accused Products
Abstract
Apparatus and methods are provided that employ one or more of a variety of techniques for reducing the time required to display high resolution images on a high dynamic range display having a light source layer and a display layer. In one technique, the image resolution is reduced, an effective luminance pattern is determined for the reduced resolution image, and the resolution of the effective luminance pattern is then increased to the resolution of the-display layer. In another technique, the light source layer'"'"'s point spread function is decomposed into a plurality of components, and an effective luminance pattern is determined for each component. The effective luminance patterns are then combined to produce a total effective luminance pattern. Additional image display time reduction techniques are provided.
26 Citations
22 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 each of the components comprises a set of point spread function values, a first one of the plurality of components comprises a plurality of higher order bits of the point spread function values and excludes a plurality of lower order bits of the point spread function values and a second one of the plurality of components comprises the plurality of lower order bits of the point spread function values and excludes the plurality of higher order bits of the point spread function values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. 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 each of the components comprises a set of point spread function values, a first one of the plurality of components comprises a plurality of higher order bits of the point spread function values and excludes a plurality of lower order bits of the point spread function values and a second one of the plurality of components comprises the plurality of lower order bits of the point spread function values and excludes the plurality of higher order bits of the point spread function values. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification