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US 12,646,156 B2Granted
Neural networks for precision rendering in display management
AssigneeDolby Laboratories Licensing Corporation
InventorsAnustup Kumar Atanu Choudhury, Robin Atkins
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Abstract
Methods and systems for precision rendering in display mapping using neural networks are described. Given an intensity input image, a sequence of neural networks comprising a pyramid-halving sub-network, a pyramid down-sampling sub-network, a pyramid-up-sampling sub-network, and a final-layer generation sub-network generate a base layer image and a detail layer image to be used in display mapping.
Claims12
A method for precision rendering in display mapping, the method comprising:
- accessing an input image (202) in a first dynamic range and a first spatial resolution;
- generating an input intensity image (I) based on the input image;
- generating a second intensity image by subsampling the input intensity image until it is lower or equal than a second spatial resolution;
- generating a set of down-sampled images based on the second intensity image and a pyramid down-sampling neural network;
- generating two up-sampled images at the second spatial resolution based on the set of down-sampled images and a pyramid up-sampling neural network comprising edge-aware up-sampling filtering;
- and
- generating an output base layer (BL) image in the first spatial resolution by combining in a final-layer neural network the two up-sampled images and the input intensity image.
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