Method for upscaling noisy images, and apparatus for upscaling noisy images
AssigneeInterDigital CE Patent Holdings, SAS
InventorsMangesh Kothule, Jordi Salvador Marcos
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Abstract
With known image upscaling methods of noisy images, important detail information is lost during denoising. A method for upscaling noisy input images comprises upscaling a noisy input image to obtain a noisy High-Resolution (HR) image, denoising the noisy input image to obtained a denoised Low-Resolution (LR) image, upscaling the denoised LR image to obtain an upscaled denoised LR image, and combining the noisy HR image and the upscaled denoised LR image to generate a denoised HR image.
Claims16
A method for upscaling noisy input images, comprising:
- upscaling a noisy input image to obtain a noisy High-Resolution, HR, image;
- denoising the noisy input image to obtain a denoised Low-Resolution, LR, image;
- upscaling the denoised LR image to obtain an upscaled denoised LR image;
- and
- combining, by a series of non-linear filtering steps, the noisy HR image and the upscaled denoised LR image to generate a denoised HR image.
An apparatus for upscaling noisy input images, comprising
- a first image upscaler adapted for upscaling a noisy input image to obtain a noisy High-Resolution, HR image;
- an image denoiser adapted for denoising the noisy input image to obtain a denoised Low-Resolution, LR, image;
- a second image upscaler adapted for upscaling the denoised LR image to obtain an upscaled denoised LR image;
- and
- an image combiner adapted for combining pixels or patches of the noisy HR image and pixels or patches of the upscaled denoised LR image to generate a denoised HR image, wherein the image combiner is configured to use a network of non-linear filters.
A non-transitory computer-readable storage medium comprising computer-executable instructions to enable a computer to perform a method for upscaling noisy input images, comprising:
- upscaling a noisy input image to obtain a noisy High-Resolution, HR, image;
- denoising the noisy input image to obtain a denoised Low-Resolution, LR, image;
- upscaling the denoised LR image to obtain an upscaled denoised LR image;
- and
- combining, by a series of non-linear filtering steps, the noisy HR image and the upscaled denoised LR image to generated a denoised HR image.
Dependencies are inferred from the claim text.