Toshiba e-STUDIO281c Service Manual page 177

<Example> Reduction
- Mirror imagin
This is accomplished by reading and outputting data from its end.
6) Rectangular area signal generation
When a rectangular coordinate position is selected, the corresponding rectangular area signals are
generated. Using these signals, various edit processing related to the area specification can be per-
formed.
7) Editing processing
This function performs trimming and masking.
- Trimming
Using rectangular area signals, the image signals inside the rectangular area are left and the
other image signals are eliminated.
- Masking
Using rectangular area signals, the image data inside the rectangular area are erased.
8) Gamma correction
This function corrects the input/output characteristics of the scanner/printer and adjusts the image
signals so that the input/output characteristics would match with the copy mode.
9) Gradation processing
In case of color copying, this function switches the type of gradation processing depending on the
copy mode: A type which selects the printer characteristics giving the priority to resolution such as
for text data, and another which selects the printer characteristics giving the priority to reproducibility
of gradation such as for photographic images.
In case of black copying, this function selects the gradation processing which reproduces the half-
tone image such as photograph more precisely. Also the gradation processing which makes text
data clearer is selected in black copying mode.
10)Compression/expansion
To lessen the data amount of the color image signals, this function effects the compression/expan-
sion on the data.
11)Scanner high quality image processing
This function corrects the image signals scanned by the scanner and reproduces them in a higher
image quality.
12)Printer high quality image processing
This function reproduces the image signals output from the printer controller in a higher image qual-
ity.
June 2005 © TOSHIBA TEC
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e-STUDIO281c/351c/451c IMAGE PROCESSING
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