Systems and methods for determining video field sharpness
AssigneeMarvell International Ltd.
InventorsShilpi Sahu, Panikumar Gururaj Kallamballe, Sujith Srinivasan
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Abstract
Systems and methods are provided for detecting sharpness among video fields. In certain implementations of the systems and methods, a plurality of video fields is received and a sharpness metric for each of the plurality of video fields is determined. The sharpness metric of a first video field is compared to the sharpness metric of a second video field among the plurality of video fields and a video field source of the first video field and the second video field is determined based on the comparison.
Claims20
A method for detecting sharpness among video fields, the method comprising:
- receiving, using video processing circuitry, a plurality of video fields;
- generating a cumulative histogram of edge magnitude values for each of the plurality of video fields;
- determining, using the video processing circuitry, a sharpness metric for each of the plurality of video fields based on the cumulative histogram for each of the plurality of video fields, wherein the sharpness metric is a magnitude value at which a number of pixels in the cumulative histogram exceeds a pre-determined number of pixels;
- comparing, using the video processing circuitry, the sharpness metric of a first video field to the sharpness metric of a second video field among the plurality of video fields;
- and
- determining, using the video processing circuitry, a video field source of the first video field and the second video field based on the comparing.
A system for detecting sharpness among video fields, the system comprising:
- video receiving circuitry configured to receive a plurality of video fields;
- sharpness metric circuitry configured to:
- generate a cumulative histogram of edge magnitude values for each of the plurality of video fields;
- determine a sharpness metric for each of the plurality of video fields based on the cumulative histogram for each of the plurality of video fields, wherein the sharpness metric is a magnitude value at which a number of pixels in the cumulative histogram exceeds a pre-determined number of pixels;
- and
- video field source circuitry configured to:
- compare the sharpness metric of a first video field to the sharpness metric of a second video field among the plurality of video fields;
- and
- determine a video field source of the first video field and the second video field based on the comparing.
Dependencies are inferred from the claim text.