Method and apparatus for improving quality of composite video signal and method and apparatus for decoding composite video signal
AssigneeSamsung Electronics Co., Ltd.
InventorSung-hee Kim
Life of this patent
Estimating the term…
Abstract
A method and apparatus for improving the quality of a composite video signal and a method and apparatus for decoding the composite video signal. The method for improving the quality of the composite video signal respectively detects edges from a luminance information signal and a chrominance information signal separated from the composite video signal, detects an artifact region using the detected edges, and filters the detected artifact region. Accordingly, an artifact can be effectively removed while preserving edge information and detail information of an image to improve picture quality.
Claims22
A method for improving the quality of a composite video signal comprising:
- respectively detecting a first edge and a second edge from a luminance information signal and a chrominance information signal;
- detecting an artifact region using the first and the second edges;
- and
- filtering the artifact region.
An apparatus for improving the quality of a composite video signal comprising:
- an edge detecting unit respectively detecting a first edge and a second edge from a luminance information signal and a chrominance information signal;
- an artifact region detecting unit detecting an artifact region using the first and the second edges;
- and
- a filtering unit filtering the artifact region.
A method for decoding a composite video signal comprising:
- separating an input composite video signal into a luminance information signal and a chrominance information signal;
- respectively detecting a first edge and a second edge from the luminance information signal and the chrominance information signal;
- detecting an artifact region using the first and the second edges;
- filtering the artifact region from the luminance information signal and the chrominance information signal to generate a filtered luminance information signal and a filtered chrominance information signal;
- and
- converting the filtered luminance information signal and the filtered chrominance information signal into an RGB color space.
An apparatus for decoding a composite video signal comprising:
- a luminance and chrominance signal separating unit separating an input composite video signal into a luminance information signal and a chrominance information signal;
- an edge detecting unit respectively detecting a first edge and a second edge from the luminance information signal and the chrominance information signal;
- an artifact region detecting unit detecting an artifact region using the first and the second edges;
- a filtering unit filtering the artifact region from the luminance information signal and the chrominance information signal to generate a filtered luminance information signal and a filtered chrominance information signal;
- and
- a color space converting unit converting the filtered luminance information signal and the filtered chrominance information signal into an RGB color space.
Dependencies are inferred from the claim text.