Blocker image identification apparatus and method
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United States of America Patent
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Nov 13, 2012
Grant Date -
Jul 16, 2009
app pub date -
Apr 26, 2007
filing date -
May 9, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Frequency analysis is performed on an image signal on a pixel by pixel basis or on a block by block basis, each block including a plurality of pixels, for each frame of the image signal. Then, a motion level or blur level is calculated on a pixel by pixel basis or on a block by block basis in accordance with a result of the frequency analysis. After the calculated motion level or blur level is converted into a binary value, 2-dimensional continuous regions are detected and a large region is extracted from the detected regions. It is then determined whether the large region is a blocker part based on at least one of an area ratio, a shape, and a position of the large region.
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