System and method for edge direction detection for spatial deinterlace
AssigneeHimax Technologies Limited
InventorsLing Shiou Huang, Sheng Chun Niu
Life of this patent
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Abstract
The system for edge direction detection for spatial deinterlace comprises an ignored region detector and an edge direction detection unit. The ignored region detector is configured to receive a first type field of a video frame and to define a search region based on the first type field. The edge direction detection unit is configured to select an edge direction within the search region. The edge direction is associated with an interpolated pixel located on one of a plurality of second type lines of a second type field, where the search region is smaller than the first type field.
Claims7
A method for edge direction detection for spatial deinterlace, comprising the steps of:
- providing a first type field comprising a plurality of first type lines of a video frame;
- providing a second type field comprising a plurality of second type lines of the video frame;
- determining at least one ignored region in the first type field, wherein the at least one ignored region is classified as a smooth region type and a vertical edge type;
- defining a search region by excluding the at least one ignored region from the first type field;
- and
- detecting an edge direction within the search region, the edge direction being associated with an interpolated pixel located in one of the second type lines;
- wherein the step of determining at least one ignored region in the first type field comprises the step of:
- comparing a horizontal difference with a vertical difference among pixels of a specific number.
A system for edge direction detection for spatial deinterlace, comprising:
- an ignored region detector configured to receive a first type field of a video frame and to define a search region based on the first type field;
- and
- an edge direction detection unit configured to select an edge direction within the search region, the edge direction being associated with an interpolated pixel located on one of a plurality of second type lines of a second type field;
- wherein the search region is smaller than the first type field;
- wherein the ignored region detector determines an ignored region by comparing a horizontal difference with a vertical difference among pixels of a specific number.
Dependencies are inferred from the claim text.