Auto Photo/Letter - Bell and Howell 500 FB Operator's Manual

SCANNER FEATURES

Auto photo/letter

Function The auto photo/letter mode detects photograph (halftone) areas and
letter (binary) areas of the original so that the binary areas are
scanned in the binary mode, and the halftone areas are scanned in
the halftone mode.
Note: This function is available only when the optional image
processing unit is installed in the scanner. When binary areas
and halftone areas are not separated clearly, segmentation
may not be achieved.
Usage Scanning of an original that includes binary images such as letters
and halftone images such as photographs.
Original
Scanned image
A-10
Scanned in binary
composition
Scanned in halftone
composition