Examples of changing color channels
Images of a color drawing changed to the Black & White Bitmap (raster) output type are shown with different color channels and black and white threshold settings applied in the Black & White Threshold tool.
Original with True Color output type
Black & White Bitmap (raster)
output type applied with NTSC Gray color
channel and automatic threshold (110)
Red color channel and automatic threshold (110)
Green color channel and automatic threshold (110)
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Blue color channel and automatic threshold (110)
Blue color channel and higher threshold (173)
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The NTSC Gray channel in the Scan using channel list box of the Black & White Threshold tool converts color to gray at a ratio of 30% red, 59% green, and 11% blue.
Index | ➮ ➮HP PrecisionScan Pro User’s Guide 88 |
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