Motion adaptive scan-rate conversion using directional edge interpolation
First Claim
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1. A method of producing improved motion signals, comprising:
- determining a motion signal from the magnitude of motion between a first field in a first frame of data and a first field in a second frame of data in a video signal at a processor;
filtering said motion signal using a median filter to eliminate errors from said motion signal, producing a filtered motion signal;
temporally filtering said filtered motion signal, producing a twice-filtered motion signal;
spatially filtering said motion signal, producing a thrice-filtered motion signal; and
making available said thrice-filtered motion signal for further processing.
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Abstract
A method for processing video data to produce a progressively scanned signal from an input of conventional interlaced video. The data is received at a processor (1), used to determine a motion signal (26) over time between field of the data. The motion signal is filtered to reduce errors caused by noise-corrupted video sources and then further filtered to spread out the determined motion signal. Edge information (30) is located and combined with the motion signal to produce an integrated progressive-scan signal (36) for display on a video display device, producing images with sharper edges and motion signals which have a lower susceptibility to noise.
100 Citations
1 Claim
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1. A method of producing improved motion signals, comprising:
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determining a motion signal from the magnitude of motion between a first field in a first frame of data and a first field in a second frame of data in a video signal at a processor; filtering said motion signal using a median filter to eliminate errors from said motion signal, producing a filtered motion signal; temporally filtering said filtered motion signal, producing a twice-filtered motion signal; spatially filtering said motion signal, producing a thrice-filtered motion signal; and making available said thrice-filtered motion signal for further processing.
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Specification
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Current AssigneeTexas Instruments, Inc.
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Original AssigneeTexas Instruments, Inc.
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InventorsOhara, Kazuhiro, Gove, Robert J., Markandey, Vishal, Clatanoff, Todd
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Primary Examiner(s)Lee, Michael
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Application NumberUS08/475,738Time in Patent Office734 DaysField of Search348/451, 348/452, 348/448, 348/606, 348/607, 348/620, 348/625, 348/619, 348/909, 348/533, 348/446, 348/431, 348/700, 348/701, 348/443, 348/699US Class Current348/701CPC Class CodesH04N 7/012 Conversion between an inter...
