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US 8,508,660 B2Granted
De-interlacing methods and related apparatuses
AssigneeRealtek Semiconductor Corp.
InventorsChing-Hua Chang, Po-Wei Chao
Life of this patent
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Abstract
The present invention provides de-interlacing methods and related apparatuses. One of the proposed de-interlacing methods includes edge detection of a target region corresponding to a target position. When the target region is assumed to include an edge that is considered stationary, and if the target position is on a stationary side of the edge, then a pixel value for the target position is generated by inter-field interpolation.
Claims20
A de-interlacing method for a frame, comprising the steps of:
- detecting, by a de-interlacing device, whether an edge exists within a target region corresponding to a target position, the target region comprising a plurality of pixels;
- in response to detection of an edge within the target region, determining whether the edge is stationary;
- in response to determining that the edge is stationary, determining whether the target position is on a stationary side of the edge;
- in response to the target position being on a stationary side of the edge, generating a pixel value for the target position by inter-field interpolation;
- and
- in response to determining that the edge is stationary and in response to the target position not being on the stationary side of the edge, generating a pixel value for the target position by intra-field interpolation.
3 more elements
A de-interlacing device for a frame, comprising:
- an edge detector configured to select a target region and detect whether an edge exists within the target region corresponding to a target position, wherein the target region comprises a plurality of pixels;
- an image displacement detector, coupled to the edge detector and configured to determine whether the edge is stationary in response to detection of the edge within the target region;
- and
- an interpolation circuit, coupled to the image displacement detector, wherein the interpolation circuit is configured to determine whether the target position is located on a stationary side of the edge in response to determining that the edge is a stationary edge,
- wherein the interpolation circuit is further configured to generate a pixel value for the target position by inter-field interpolation in response to the target position being on a stationary side of the edge, and
- wherein the interpolation circuit is further configured to generate a pixel value for the target position by intra-field interpolation in response to determining that the edge is stationary and in response to the target position not being on the stationary side of the edge.
3 more elements
A de-interlacing method for a frame, comprising the steps of:
- detecting, by a de-interlacing device, whether an edge exists within a selected target region corresponding to a target position;
- in response to detection of an edge within the target region, detecting whether an image displacement exists in the target position and in a plurality of pixels adjacent to the edge, wherein the target position and the plurality of pixels are located at the same side of the edge;
- in response to determining that no image displacement exists in the target position and in the plurality of pixels adjacent to the edge, generating a pixel value for the target position by inter-field interpolation;
- in response to determining that the target region does not include an edge, determining whether an image displacement of the target position exists;
- and
- based on whether an image displacement exists, generating a pixel value for the target position based on one of intra-field interpolation and inter-field interpolation.
3 more elements
Dependencies are inferred from the claim text.