US 2015/0146979 A1 · TECHNIQUES TO REDUCE COLOR ARTIFACTS IN A DIGITAL IMAGE

Abstract

Techniques for reducing color artifacts in a digital image are described. In one embodiment, for example, an apparatus may comprise logic, at least a portion of which is in hardware, the logic to determine a respective set of error values for each of a set of lens shading correction (LSC) tables, each set of error values describing error associated with application of its corresponding LSC table to a preprocessed image, determine a respective weight for each of the set of LSC tables based on the corresponding set of error values for that LSC table, and generate a composite LSC table for the preprocessed image as a weighted sum of the set of LSC tables, based on the respective weights for the set of LSC tables. Other embodiments are described and claimed.

Claims25

Dependent claims

An apparatus, comprising:

logic, at least a portion of which is in hardware, the logic to determine a respective set of error values for each of a set of lens shading correction (LSC) tables, each set of error values describing error associated with application of its corresponding LSC table to a preprocessed image, determine a respective weight for each of the set of LSC tables based on the corresponding set of error values for that LSC table, and generate a composite LSC table for the preprocessed image as a weighted sum of the set of LSC tables, based on the respective weights for the set of LSC tables.

At least one non-transitory machine-readable medium comprising a set of instructions that, in response to being executed on a computing device, cause the computing device to:

determine a respective set of error values for each of a set of lens shading correction (LSC) tables, each set of error values describing error associated with application of its corresponding LSC table to a preprocessed image;
determine a respective weight for each of the set of LSC tables based on the corresponding set of error values for that LSC table;
and
generate a composite LSC table for the preprocessed image as a weighted sum of the set of LSC tables, based on the respective weights for the set of LSC tables.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

14/182,824Filed 18 Feb 2014

Priority

27 Nov 2013

Published

28 May 2015

Term ends

Not estimatedThe source records don’t support an estimate.

Classification4 codes

H04N 17/002
Diagnosis, testing or measuring for television systems or their details: for television cameras
H04N 9/646
Circuits for processing colour signals: for image enhancement, e.g. vertical detail restoration, cross-colour elimination, contour correction,…
H04N 25/61
Noise processing, e.g. detecting, correcting, reducing or removing noise: the noise originating only from the lens unit, e.g. flare, shading,…
H04N
Pictorial communication

Techniques to reduce color artifacts in a digital image

Life of this patent

Techniques to reduce color artifacts in a digital image

Life of this patent

Abstract

Claims25