Systems and methods for chroma noise reduction
First Claim
Patent Images
1. 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, and wherein the sparse filter comprises a plurality of zeros employed as filter coefficients configured to avoid sampling a portion of the image data.
0 Assignments
0 Petitions
Accused Products
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.
251 Citations
20 Claims
-
1. 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, and wherein the sparse filter comprises a plurality of zeros employed as filter coefficients configured to avoid sampling a portion of the image data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An electronic device comprising:
-
an imaging device configured to obtain raw image data; and image signal processing circuitry 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, wherein the first 2D lookup table of noise thresholds is indexed according to a first index value and a second index value. - View Dependent Claims (10, 11, 12, 13, 14)
-
-
15. 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 circuitry 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, wherein the sparse filter comprises a plurality of zeros employed as filter coefficients configured to avoid sampling a portion of the YCC image data. - View Dependent Claims (16, 17, 18, 19, 20)
Specification