Canon scanner CanoScan FB 630U User Manual
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Top Page Glossary Contents Index 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 inch (dpi), for the scanned image, available from the Scan Resolution list on the Main sheet. See also dpi, Pixel, Resolution. Sliders On some of the controls in ScanGear CS, for example, the Contrast/ Brightness tool, you have the choice of either typing values directly into text boxes or using sliders. Click the slider and move it to the left or to the right to change the values. Statement A U.S. standard paper size measuring width x height: 5.5 x 8.5 in. (139.7 x 215.9 mm) Status Bar The information line at the lower border of the ScanGear CS main window which provides helpful information about the current image and settings.
Top Page Glossary Contents Index 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 which a gray pixel is determined to become either black or white. The Threshold slide bar is on the Scanner sheet. Adjust the Threshold value when you are scanning a grayscale or halftone original with Black and White selected as the Scan Mode. Tone The shading and combination of colors in the image. Tone Curve The curve displayed with the Tone sheet tools to indicate the Black-, Mid-, and White-point tones in a color or grayscale preview image. You cannot edit the curve except with the Special Tone Curves tool. Tone sheet The Tone sheet contains tools that let you adjust and correct the image tone. The Tone sheet tools include Auto Tone, Contrast/ Brightness, Gamma, Histogram, and Special Tone Curves.
Top Page Glossary Contents Index 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. Units of measurement In the Units text box, the expression of width and height, in inches, centimeters, or pixels, of the scanned image. Universal Serial Bus (USB) A group of hardware devices that makes it easier to add serial devices to a computer system. Support of USB devices is built into the Windows Driver Model (WDM) specifications, making it easier for future versions of Windows to support the current drivers. White-point The lightest portion of the image scanned as Color or Grayscale. When you click on the image with the White-point eyedropper, all tones lighter than the selected sample tone are adjusted to white.
Top Page Glossary Contents Index 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 color. Zooming Enlarging an image or a selected part of the image in the Preview Area or in a graphics application.
Top Page Glossary Contents Index 86 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 adjusting output color (Special Tone Curve), 36 adjusting threshold, 36 descreen (moire reduction), 36 G Gamma button, 47 Gamma sheet, 50 Grayscale, 42
Top Page Glossary Contents Index 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 Negative/Positive button, 39 P Paper Size, 33, 58 Preferences sheet Automatically execute a preview, 24 Automatically quit ScanGear after scanning, 24 Canon ColorGear color matching, 23 opening, 21 Saved image will be displayed, 24 Use High Definition Color instead of Color, 23 Use Text Enhanced instead of Black and White, 23 Preview Area function, 30 Preview button, 29 preview opening setting opening Preferences sheet, 11 setting up, 11
Top Page Glossary Contents Index 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 Curves button, 47 Special Tone Curves sheet, 54 editing a curve directly, 56 Status Bar, 31 T Test Scanner, 59 Text Enhanced, 42 Threshold, 59 Tone sheet Tone buttons, 47 toolbar Auto Crop button, 39 Auto Tone button, 40 Crop button, 38 Help button, 40 Mirror button, 39 Move Image button, 38 Negative/Positive button, 39 Rotate Left button, 40 Rotate Right button, 40 Rulers button, 40 Zoom Tool button, 39 troubleshooting, 64 TWAIN source Select Scanner dialog box, 13 selecting, 13 U Units, 44
Top Page Glossary Contents Index 89 Index W Width and Height, 44 Z Zoom Tool button, 39