Image retrieval device for optically retrieving an image and obtaining binary image data from the image
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United States of America Patent
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Sep 4, 2001
Grant Date -
N/A
app pub date -
Apr 1, 1997
filing date -
Apr 8, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
An image retrieval device including: an image retrieval unit for optically retrieving an image and outputting an analog image signal according to the image; an analog-to-digital conversion unit for converting the image signal from the image retrieval unit into multi-valued data for a number of pixels representing the image; and a pixel number conversion unit for reducing the number of pixels in the multi-valued data from the analog-to-digital converter by combining multi-valued data for predetermined pluralities of the number of pixels into multi-valued data for single pixels.
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