Method and apparatus for selective processing of captured images
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Aug 26, 2008
Grant Date -
Jul 1, 2004
app pub date -
Aug 2, 2001
filing date -
Aug 11, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Methods and apparatus are disclosed for identifying intended response marks in an optically scanned image of a response sheet having key marks and response targets printed in the same color. Pixel darkness values assigned by a digital imaging scanner are used to locate key marks and response targets and to identify response marks. Areas of the sheet may be selectively filtered to mask the response targets. Alternatively, a color imaging scanner may be used to produce a set of color values, such as RBG values, for each pixel. Software can act as a virtual filter by using the RBG values to detect or to mask a color in the image.
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