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US 2015/0317772 A1Published application
Systems and methods for chroma noise reduction
AssigneeApple Inc.
InventorsSuk Hwan Lim, Mark Zimmer
Life of this patent
Estimating the term…
Abstract
Systems and methods for reducing chrominance (chroma) noise in image data are provided. In one example of such a method, image data in YCC format may be received into logic of an image signal processor. Using the logic, noise may be filtered from a first chrominance component or a second chrominance component, or both, of the image data, using a sparse filter and a noise threshold. The noise threshold may be determined based at least in part on two of the components of the YCC image data.
Claims20
A method comprising:
- receiving image data in YCC format into logic of an image signal processor;
- and
- using the logic to filter noise from a first chrominance component or a second chrominance component, or both, using a sparse filter and a noise threshold, wherein the noise threshold is determined based at least in part on two of the components of the image data.
An electronic device comprising:
- an imaging device configured to obtain raw image data;
- and
- image signal processing logic configured to:
- process the raw image data to obtain RGB image data;
- process the RGB image data to obtain YCC image data;
- and
- filter the YCC image data to remove chroma noise from a first chroma component of the YCC image data based at least in part on a first noise threshold provided by a first 2D lookup table of noise thresholds.
4 more elements
An image signal processing system comprising:
- a YCC-format image processing pipeline comprising a plurality of processing blocks, wherein the YCC-format image processing pipeline comprises:
- chroma noise reduction logic configured to reduce chroma noise in a first chroma component or a second chroma component of a pixel of interest in YCC image data using a sparse filter and a noise threshold, wherein the noise threshold is determined based at least in part on two components of the YCC image data.
Dependencies are inferred from the claim text.