Character extracting apparatus, method, and program
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United States of America Patent
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Mar 20, 2012
Grant Date -
Mar 13, 2008
app pub date -
Sep 13, 2007
filing date -
Sep 13, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides a technique of accurately extracting areas of characters included in a captured image even in a case where noise or dirt of a relatively large area occurs in a background image. An integrated pixel value is obtained by integrating pixel values in a character extracting direction B for pixel positions in a character string direction A of an image including a character string. A standard deviation value is calculated along the character extracting direction for pixel positions in a character string direction A. The integrated pixel value and the standard deviation value are combined for pixel positions in a character string direction A. A threshold is set automatically or manually. A part of pixel positions in a character string direction A having the combined value of the integrated pixel value and the standard deviation value higher than the threshold is recognized as a character area to be extracted.
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