Canon scanner CanoScan FB 630U User Manual

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81
Glossary
Scan Mode
The desired bit depth for the scanned image. Choices are Color,
High Definition Color, Black and White, Grayscale, and Text
Enhanced.
Scanner
An input device that scans an original with a light source, and
converts the image tones to digital information for computer
applications. The digital information can be saved as a file, or
converted to a text file using OCR software.
Scan Resolution
A list of preset levels of detail, expressed in dots per...

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82
Glossary
Test Scanner Button
The Test Scanner Button on the Scanner sheet starts diagnostic
tests and reports if there are any problems with the scanner.
Text Enhanced
A feature used by ScanGear CS to increase the accuracy of text
scans. When Text Enhanced is the scan mode, images are scanned
as Grayscale (8 bits per pixel) and converted to Black and White (1
bit per pixel) using Canon ImageTrust processing software.
Threshold
In a Black and White image, the point at...

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83
Glossary
Toolbar
A set of ScanGear CS tool buttons, located above the Preview
Area, for image selection, orientation, and other basic
adjustments.
TWAIN
TWAIN refers to an industry standard for transferring information
from devices (such as a scanner or digital camera) to your
computer. One interpretation of the acronym is ÒTechnology
Without An Interested Name.Ó
Underexposed
An dark photographic image that was exposed to too little light
when it was photographed....

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84
Glossary
Width
The Width text box contains the width of the current selection or,
if there is no selection, the maximum horizontal output size, based
on the currently selected paper size.
Width-Height ratio
Proportion of the image. To keep the width-height ratio intact,
click the Keep Proportions button before changing the width or
height values.
X and Y Axes
The X and Y axes on the Tone sheet curve chart represent,
respectively, the input image color and output image...

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1-85
Index 

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Index
Index
A
Auto Crop Button,  39
Auto Tone button,  40, 47
Auto Tone Sheet,  48
B
Black and White,  42
C
Calibration,  59
Clear button,  30
Color,  42
Contrast/Brightness button,  47
Contrast/Brightness sheet,  49
Crop button,  38
Custom Resolution dialog box,
45
D
Descreen,  59
E
enhancing image
adjusting Brightness,  35
adjusting color tone
automatically,  35
adjusting Contrast,  35
adjusting intensity of tones
(Histogram),  35
adjusting mid-tones
(Gamma),  35...

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87
Index
H
help
opening on-line help,  8
Help button,  40
High Definition Color,  42
Histogram button,  47
Histogram sheet,  52
M
Main sheet
Keep Proportions button,  43
Scale,  44
Scan Mode,  41
Scan Resolution,  42
Selection,  43
Units,  44
Width and Height,  44
Main window
overview,  29
manipulating image
cropping,  34
inverting an image,  34
mirroring an image,  34
moving an image,  34
rotating an image,  35
zooming,  34
Mirror Button,  39
Move Image button,  38
N...

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88
Index
R
resolution,  31, 42
setting custom resolution,  45
Rotate Left button,  40
Rotate Right button,  40
rulers,  30
Rulers button,  40
S
Scale,  33, 44
Scan button,  29
Scan Mode,  31, 41
Scan Resolution,  42
Scanner sheet,  58
scanning
preparing scanner,  10
previewing the original,  14
scanning an original,  14
selecting scanning area,  18
scanning area
selecting,  18
scanning buttons
described,  29
Select Scanner dialog box,  13
Selection,  43
Special Tone...

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Index
W
Width and Height,  44
Z
Zoom Tool button,  39