Human visual system based motion detection/estimation for video deinterlacing
AssigneesSony Corporation, Sony Electronics Inc.
InventorXimin Zhang
Life of this patent
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Abstract
A method of effectively de-interlacing a sequence of interlace-scanned pictures receives the sequence of pictures, forms a received sequence, and performs motion detection upon the received sequence. The method generates a first threshold for measuring the accuracy of the motion detection, and measures the accuracy of the motion detection, thereby forming a first accuracy measurement. The accuracy of the motion detection is measured by using a difference calculation. The method de-interlaces a picture in the received sequence by using the first accuracy measurement. The de-interlacing is motion adaptive.
Claims35
A method of effectively de-interlacing a sequence of interlace-scanned pictures, the method comprising:
- receiving the sequence of pictures, thereby forming a received sequence;
- performing motion detection upon the received sequence;
- generating a first threshold for measuring the accuracy of the motion detection;
- measuring the accuracy of the motion detection, thereby forming a first accuracy measurement, wherein the accuracy of the motion detection is measured by using a difference calculation;
- and
- de-interlacing a picture in the received sequence by using the first accuracy measurement, wherein the de-interlacing is motion adaptive.
A system for effectively de-interlacing a sequence of interlaced pictures, the system comprising:
- a receiver for receiving the sequence of pictures, and configured to form a received sequence;
- a motion detection module configure to detect motion in the received sequence;
- a threshold generator configured to generate a first threshold for measuring the accuracy of the motion detection;
- a comparator for comparing the motion in the received sequence with one or more thresholds to measure an accuracy of the motion detection, thereby forming a first accuracy measurement, wherein the accuracy of the motion detection is measured by using a difference calculation;
- and
- a de-interlacer for de-interlacing a picture in the received sequence by using the first accuracy measurement, wherein the de-interlacing is motion adaptive.
A system for effectively encoding a sequence of pictures, the system comprising:
- means for human visual system based threshold generation;
- means for human visual system based horizontal threshold adjustment;
- means for determining whether a motion determination is good and bad, by using a sub-block luminance difference and a sub-block chrominance difference;
- and
- a scheme for motion adaptive de-interlacing by using a measure of accuracy for one of motion detection and motion estimation, the accuracy measure based on a property of the human visual system.
Dependencies are inferred from the claim text.