Apparatus and method for reducing artifacts in images
AssigneeThomson Licensing
InventorsJu Guo, Dong-Qing Zhang
Life of this patent
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Abstract
An apparatus and method of the present disclosure provides an automatic banding region detection function for detecting an image region that has a smooth linear transition of color intensity and is prone to have banding artifacts in image processing. The apparatus and method use a parametric model based approach to detect the banding region. The apparatus and method provide for segmenting at least one first image into at least one homogeneous color region (304), estimating the linear transition of color intensity for the at least one homogeneous color region (308), and if the linear transition of color intensity is substantially smooth, classifying the at least one homogenous color region as a banding region (310).
Claims31
A method for detecting a banding region in an image, the method comprising:
- segmenting at least one first image into at least one homogeneous color region;
- estimating the linear transition of color intensity for the at least one homogeneous color region;
- and
- if the linear transition of color intensity is substantially smooth, classifying the at least one homogenous color region as a banding region.
An apparatus for detecting a banding region in an image, the apparatus comprising:
- an image segmentation module configured for segmenting at least one first image into at least one homogeneous color region;
- a linear transition estimator configured for estimating the linear transition of color intensity for the at least one homogeneous color region;
- and
- a region detection module configured for classifying the at least one homogenous color region as a banding region if the linear transition of color intensity is substantially smooth.
An apparatus for detecting a banding region in an image comprising:
- means for segmenting at least one first image into at least one homogeneous color region;
- means for estimating the linear transition of color intensity for the at least one homogeneous color region;
- and
- if the linear transition of color intensity is substantially smooth, means for classifying the at least one homogenous color region as a banding region.
Dependencies are inferred from the claim text.