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US 9,807,339 B2Granted
Frame rate conversion system
AssigneeSharp Laboratories of America, Inc.
InventorsXu Chen, Petrus J. L. Van Beek
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Abstract
A system for the conversion of video from one frame rate to a different frame rate. The system includes the application of graphical element and text detection and processing in frame rate up conversion.
Claims6
A system for detecting a graphical element in a selected image of a series of images comprising:
- (a) a motion compensated error map process that identifies regions of said selected image that have a value greater than a threshold of the difference between said selected image and a motion compensated said selected image based upon said series of images to provide a likelihood map for detecting said graphical element;
- (b) a first filter process based upon said selected image and a plurality of said series of images other than said selected image to temporally smooth said likelihood map;
- (c) said system modifying said likelihood map based upon said first filter process,
- (d) further comprising a second filter process to filter out spatial locations of said likelihood map at spatial locations that are generally central in said selected image, a third filter process to filter out spatial locations of said likelihood map where a difference between said selected image and a non-motion compensated said one of said series of images other than said selected image is greater than a threshold, a fourth filter process to spatially smooth said likelihood map, a fifth filter process to filter out regions having a size less than a first threshold and greater than a second threshold and modifying said likelihood map based upon said first second, third, fourth, and fifth processes.
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Dependencies are inferred from the claim text.