Image analysis – Image transformation or preprocessing – Selecting a portion of an image
Patent
1994-04-07
1996-09-24
Couso, Jose L.
Image analysis
Image transformation or preprocessing
Selecting a portion of an image
382217, 382254, 382191, 358504, 358527, 358532, 364526, G06K 920
Patent
active
055599036
ABSTRACT:
In a method for producing geometric masks, a color image is displayed on a monitor. Color samples are taken from the image with a coordinate input unit and are deposited in a color sample memory. Color correction values that modify colors identified by the color samples can be input. A color computer serves the purpose of fast calculation of the color correction. For generating geometric masks, the color computer is loaded with an extreme value at the locations that are identified by the color samples. For that purpose, a table in the color computer is loaded with the extreme value at the corresponding location. The color image data are then applied to the color computer and the output data of the color computer are compared to a threshold. When the result is positive, a location in the mask memory is set. After all image pixels have been compared in this way to the thresholds, the mask memory contains a geometric mask at all locations that belong to the color samples. The masks in the image can be displayed on a monitor and can be used in the standard way for image processing.
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Couso Jose L.
Do Anh Hong
Linotype Hell AG
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