Image analysis – Image segmentation
Patent
1995-06-21
1999-12-14
Chang, Jon
Image analysis
Image segmentation
382199, 348564, 348589, G06K 934
Patent
active
060027975
ABSTRACT:
A boundary position detection apparatus in which the position of an imageless part (containing no meaningful image information) lying at the upper part or/and the lower part of a picture is precisely detected from a video signal. A line decision circuit decides whether each of lines constituting the picture belongs to an image part (containing meaningful image information) or to the imageless part. A boundary decision circuit decides the boundary between the image part and the imageless part. A time integration circuit integrates the detected boundary positions temporally, and determines a final boundary position. A detection control circuit finds an image-part region from the final position, detects the average luminance of the region and controls the integrating time interval of the time integration circuit with the average luminance.
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Bando Yumi
Mori Takayuki
Murata Toshinori
Nakagaki Nobufumi
Suzuki Sunao
Chang Jon
Hitachi , Ltd.
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