Canon CS-S 4.3 manual Enhancing Color Images, About Image Color and Color Channels

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CONTENTS

GLOSSARY

INDEX

Chapter 5

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Scanning Techniques

 

 

5.Click the Eyedropper tool on the point of the image you want to sample. That value is entered in the corresponding text box, and the image adjusts according to that value.

6.If the area of the image surrounding the sampled area changes tone as you expected, make a note of the settings. If the selected image area does not change tone as you expected, repeat this process until you get the results you want.

Enhancing Color Images

This is a brief discussion about color basics. There are many good books about working with graphic images. If you are using color imaging software such as Adobe Photoshop LE, your software documentation can provide you with more information to help you adjust your images when they have been scanned and acquired by the imaging software.

About Image Color and Color Channels

All printable colors can be created using a combination of the colors cyan, magenta, and yellow (CMY). (Black is often used in printing, so you may hear that colors are printed using the “colors” CMYK, the K stands for “Key color.”)

All colors displayed on monitors can be created using a combination of the colors red, green, and blue (RGB). Red, green, and blue can be thought of as complementary colors to cyan, magenta, and yellow-that is, the colors cancel each other out when combined in equal amounts. Similarly, adding a small amount of one color reduces its complement by that amount.

This complementary relationship between the colors cyan, magenta, and yellow and the colors red, green, and blue can be represented using a color wheel that indicates the possible colors and their opposites.

Green Yellow

Cyan Red

Blue Magenta

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Contents UsersGuide Quick Start Guide How to Make Best Use of the ManualsCopyright Notice Contents Scanning Devices Glossary Index Setting Up ScanGear Toolbox CSHardware Introduction to ScanGear CS-SWelcome to ScanGear CS-S System RequirementsSoftware Feature ListAbout ScanGear CS-S Windowless Mode About ScanGear CS-SAbout this User’s Guide Canon Technical SupportAssumptions Installing ScanGear CS-S Installing ScanGear CS-SNext Steps Where to Go From HereSelecting ScanGear CS-S Removing ScanGear CS-SGetting Help in ScanGear CS-S Twain Interface Using ScanGear CS-S with an ApplicationScanning About ScanningFeatures of the ScanGear CS-S Window Acquiring an ImagePreview Area Status and Message Areas Settings TabsClear, Preview and Scan Buttons ToolbarQuick Start to Scanning Preparing the ScannerPreviewing an Image Contents Contents Glossary Index Now you are ready to scan Where is the Scanned Image? Scanning in Windowless UI-less ModeUsing the Toolbar Working with Preview ImagesChanging the Preview Image Shape and Size Creating a Negative Image Cropping Part of an ImageMoving an Image Zooming In and OutSelecting Automatic Tone Correction Reversing an ImageRotating an Image Left or Right Displaying or Hiding the RulersSpecifying How the Image is Previewed Setting Scanning Mode Setting Scan Mode, Resolution, and DimensionsTo set scanning mode Selecting a Preset Resolution Selecting Scan ResolutionDeleting a Custom Resolution Selecting a Custom ResolutionChanging a Custom Resolution Selecting Output DimensionsSetting Units of Measurement Setting Image Width and HeightMaintaining Image Proportion Setting Scale About the Tone Tab Settings Setting Image TonesSelecting a Color Channel About the Tone Curve WindowUsing the Auto Tone Setting Adjusting Contrast and Brightness Changing Gamma Curve Values Glossary Index Change Tone Using the Histogram ToolDo one of the following to change the black point Do one of the following Using Preset or Custom CurvesUsing Predefined Tone Curves Using Custom Tone CurvesAbout the Curve Box Select Special Curve list, select Edit custom curve Curve is saved in the location you specify Hints for Editing Custom Tone Curves Opening a Saved Custom Tone CurveSetting General Preferences Using Text Enhanced for ScansSelecting Text Enhanced About Canon ColorGear Color Matching Using Canon ColorGearTM Color MatchingSelecting a Monitor Profile Setting Up the Preview Options Image Source Configuring Scanning DevicesConfiguring a Device with ScanGear CS-S Scanning DevicesDescreen Threshold SettingTest Scanner Shut Off Lamp Time Chapter Scanning DevicesScanning Multi-Page Documents Using the Automatic Document Feeder ADFPreparing the Material to Scan Scanning TechniquesAbout Scanning Techniques Planning for the End ResultMatching Scan Resolution to Purpose Optical and Enhanced Resolutions Resolution and ColorEstimating Image Sizes File Size Estimates Cropping the Image Shape Custom Tone Adjustments Contrast and Brightness AdjustmentsWhat Do Those Curves Mean? Histogram Techniques Gamma AdjustmentsContents Contents Sampling a Tone for the Histogram About Image Color and Color Channels Enhancing Color ImagesContents Glossary Index Using ScanGear Toolbox CS Installing and Uninstalling ScanGear Toolbox CSAbout ScanGear Toolbox CS About the ScanGear Toolbox CS Bar Starting ScanGear Toolbox CSSetting Up ScanGear Toolbox CS Adding a Button to the ScanGear Toolbox CS BarRemoving a Button from the ScanGear Toolbox CS Bar Enabling or Disabling Easy Acquire Configuring Copy Settings Showing the Copy Button on the ScanGear Toolbox CS Bar Copying Acquired ImagesWith the ScanGear CS-S window open, do the following Configuring Mail Settings Showing the Mail Button on the ScanGear Toolbox CS Bar Linking a Mail ApplicationMailing Acquired Images Linking a Fax Application Configuring Fax SettingsShowing the Fax Button on the ScanGear Toolbox CS Bar Faxing Acquired ImagesConfiguring Edit or Custom Settings Linking an Edit or Custom Application Contents Selecting a ScanGear Toolbox CS Source Changing ScanGear Toolbox CS PreferencesSpecifying ScanGear Toolbox CS Appearance Cleaning Up Temporary FilesUsing ScanGear Toolbox CS Shortcut Menus Canon Scanner Monitor Canon Monitor Utility DisplayRight-Clicking the Canon Scanner Monitor Icon ScanGear Toolbox CS Settings Summary Copy ImageMail Image Edit or Custom Image Fax ImagePre-Scan Checklist Frequently Asked QuestionsTop Ten List Scanner diagnostics test displays a test failed message Troubleshooting Q & aYour graphics application cannot find the scanner Some functions are grayed-outScanGear CS-S does not launch Parts of images are missing or misaligned Printing or scanning is too slowPreview image is too small on my monitor Automatic document feeder is jammedBits and Bit Depth Automatic Tone AdjustmentGlossary Acquired ImagesContents Index Color Wheel Curve ChartCustom Resolutions DefaultEasy Acquire DigitizingDpi DriverHistogram Tool Gamma CorrectionGrainy HeightMid-Tone Optical ResolutionLow Contrast Mid-Point EyedropperOutput Size Output DimensionsPreset Curves Output File FormatsRotate Left/Right ResolutionScan Mode Scan ResolutionSliders System DefaultSelection Tool Shortcut MenusTone Curve Text EnhancedThreshold ToneWidth-Height Ratio Units of MeasurementWhite-Point Eyedropper WidthIndex 104 105 106 107 108 OE-022AA 0399 CDS Canon Inc