Canon N650U, N656U, N1220U Glossary, Auto Tone Correction, Bits/Bit Numbers, Black Eyedropper Tool

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Glossary

Auto Tone Correction

A function that uses brightness/contrast and gamma value settings to automatically analyze and adjust images.

Bits/Bit Numbers

Each dot of a 1-bit image is assigned either black or white according to the threshold brightness value, resulting in the image being reproduced in just those two colors. Each dot of an 8-bit grayscale image can be assigned any one of 256 tones of gray, ranging from pure white to black. Each dot of a 24-bit color image can be assigned any one of 16.7 million colors since each of its color channels (red, green and blue) can be expressed in 256 distinct color tones (8 bits).

Black and White

An image mode used to reproduce images in two tones only: black and white. The brightness level at which a dot is determined to be either black or white is called the threshold value, which can be adjusted. See Threshold Value.

Black Eyedropper Tool

Tool used to the select the darkest portion of an image in the preview area. Used with the Histogram function to adjust image brightness. When this tool is clicked on the image, all areas that are darker are set to pure black.

Brightness

The intensity of light in a scanned image. Raising an image’s brightness increases its overall brilliance, while decreasing it makes it darker.

Calibration

A scanner function that automatically adjusts the scanner’s white balance to true white.

Color Balance

The function in that enables you to adjust the blend of colors in a color image. You can adjust the color balance by altering the blend of the red, green and blue color set or the cyan, magenta, yellow and black color set.

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Contents Users Guide When you open the box How to Make Best Use of the ManualsAbout the Conventions Used in this Guide How to Use this GuideWhere to Look Table of Contents Adjusting Scanned Images Operating Environment Installing Plug-in Module CS-UImage Size pp Control Panel FeaturesE P Scanning ProceduresColorSync Ver 2.0 + Compatible for Auto Tone Correction Plug-in Module CS-U Special FeaturesSee the Results of Adjustments Immediately Dynamic Preview Gamma Curve Adjusts Image BrightnessPosition materials for scanning and preview them Install Plug-in Module CS-UQuick Start Instructions Start Plug-in Module CS-USelect the area to be scanned by clicking and dragging Verify Image Quality with the Browser Function beforeSpecify the Area of the Image to be Scanned Click on the Browser button Selection frame will appearSave the Scanned Image p Scan the Image pE P RGB Values Displaying the Plug-in Module CS-U Control PanelOperating Procedures Place the original on the scanners document glass ProceduresPositioning Originals Click on the Preview button PreviewingSelecting the Output Device Output Device Resolution= 720 dpi, Magnification= 100% Setting the Resolution and MagnificationSet the desired magnification factor on the control panel To Set the Magnification FactorColor Documents Setting the Scan ModeBlack and White GrayscaleSelect a scan mode from the pop-up menu Click the arrow beside Scan ModeTo Verify the Image Verifying the Image before ScanningUse these buttons to rotate the image Rotating the ImageAspect Ratio Setting PreferencesOutput Device Preview Window UnitClose Plug-in After Scan Reset Default SettingsCalibration Operating Procedures Scanning Position the pointer in the preview window Setting the Scan AreaSelect the area you want to enlarge with the zoom function Procedures to ZoomZooming Click on the Zoom In button Click on the Scan button ScanningTo Initiate the Scan Specify the Scan AreaEnter a name for the file and click the Save button Saving Scanned ImagesColor Photos and Color Documents Grayscale, Color Photos and Color DocumentsBlack & White Tone Adjustment Dialog Tone AdjustmentHow to Interpret Histograms Histogram SettingsHow to Adjust Histograms To Adjust a HistogramShadow Mark Click on the OK buttonManipulating the Graph Tone Curve SettingsClick the OK button To Edit the Tone CurveValue = Relationship Between the Tone Curve Image BrightnessBrightness Brightness and Contrast SettingsContrast To Adjust the Brightness and Contrast Operating Procedure Adjusting the Color BalanceGamma value Gamma Value SettingsMatching the Gamma Value to the Display Characteristics To Change the Gamma Value Settings To Set the Threshold Value Adjusting the Threshold ValueColorSync Auto Tone CorrectionTo Set the Auto Tone Correction StandardOpen the Image menu and select Unsharp Mask Unsharp MaskOpen the Image menu and select Descreen DescreenClick the Save button Saving/Recalling SettingsTo Save Settings in a Settings File To Recall a Settings File Scanning Techniques Matching Scan Resolution to PurposeOptical and Enhanced Resolutions Appendices Troubleshooting Problem Scan button cannot be selected Response Error MessagesError Message CauseBlack Eyedropper Tool GlossaryAuto Tone Correction Bits/Bit NumbersDot Color ChannelMagnification HistogramImage File Pixel Optical ResolutionResolution MoiréTone Curve Scan ModeShadows Threshold ValueOutput device 7, 11, 18, 25 IndexPage Canon Computer SYSTEMS, INC Canon Customer Support Help DeskOE-040AA 052000 CDS Canon Inc