Contrast optimization and local adaptation approach for high dynamic range compression
AssigneeIntel Corporation
InventorsShay Maymon, Hila Barel
Life of this patent
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Abstract
An apparatus is described herein. The apparatus comprises a controller, a logarithmic tone-reproduction operator, a processor, and a compressor. The controller is to calculate a regularization term and a contrast preservation term of an objective function. The logarithmic tone-reproduction operator is to produce a reference image. The processor is to obtain a compressed luminance from the objective function as applied to the reference image. The compressor is to compress a high dynamic range (HDR) image by applying a gain term to the HDR image based on the compressed luminance.
Claims25
An apparatus for contrast optimization and local adaptation for HDR compression of an HDR image, comprising:
- a controller to calculate a regularization term and a contrast preservation term of an objective function;
- a logarithmic tone-reproduction operator to produce a reference image;
- a processor to obtain a compressed luminance from the objective function as applied to the reference image;
- and
- a compressor to compress the HDR image by applying a gain term at least partially based on the compressed luminance to the HDR image.
A method, comprising:
- calculating, via a processor, a regularization term and a contrast preservation term of an objective function;
- producing a reference image;
- obtaining a compressed luminance from the objective function as applied to the reference image;
- and
- compressing an HDR image by applying a gain term to the HDR image at least partially based on the compressed luminance.
At least one non-transitory machine-readable medium having instructions stored therein that, in response to being executed on a computing device, cause the computing device to:
- calculate, via a processor, a regularization term and a contrast preservation term of an objective function;
- produce a reference image;
- obtain a compressed luminance from the objective function as applied to the reference image;
- and
- compress a high dynamic range (HDR) image by applying a gain term at least partially based on the compressed luminance to the HDR image.
Dependencies are inferred from the claim text.