Visioneer 9450 manual To adjust the gamma curve

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32VISIONEER 9450 SCANNER INSTALLATION GUIDE

3.Enter new settings in the boxes for the three levels, or drag the small triangles at the bottom of the histogram.

As you change the settings, the histogram changes to reﬂect the new levels.

4.Click Preview to see the effect of the new settings on the preview image.

5.Click Reset to reset the levels to their original values.

6.Click OK when the levels are what you want.

CURVES

Like the Highlight/Shadow levels, the Curves feature also adjusts the range of midtone colors on an image. However, with the Curves feature you can set the gamma individually to adjust midtone levels without losing details from the lightest or darkest areas.

To adjust the gamma curve:

1.Click the Curves button.

The dialog box that appears shows a plot of the gamma. The gamma of the original image is represented by a straight line from the lower left to upper right corners. Changing the straight line to a curve changes the gamma setting for the midtones on the original image.

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Contents Visioneer Scanner Installation Guide P Y R I G H T I N F O R M a T I O N B L E O F C O N T E N T S Visioneer Welcome WHAT’S in the BOXVisioneer 9450 Scanner Visioneer 9450 Scanner What YOU Need To use the scanner and software, you need the followingAssemble the Scanner To assemble the scannerUnlocked position Assemble the Scanner Install the Software To install the scanner softwareSelect Install Scanner Software Select Install ScannerConnect the Scanner Plug the power supply into its power port on the scanner To connect the scannerVisioneer 9450 Scanner Installation Guide Connect the Scanner Visioneer 9450 Scanner Installation Guide Scanning Loading Documents to ScanTo load a single item Scanning Items To scan an itemScan Pane Click this Scan button to display the Scan Manager Scanning Items Visioneer 9450 Scanner Installation Guide Adjusting the Image with the Scan Manager ContrastMagazine images. Use this setting for lower resolution black Adjusting the Output Size Preview AUTO-AREA Manually Setting the Scan Area To manually set an output areaHere’s a sample of a manually selected output area To manually set the width and lengthReversing the Image Adjusting Color and Gray Images To descreen an image To sharpen an imageManually Adjusting Color Settings To adjust the highlight and shadow levels To adjust the gamma curve To adjust the color balance HUE/SATURATION/LIGHTNESS Color DROP-OUT Color Drop-out icon Clearing Paper Jams To clear a paper jamCare and Maintenance Cleaning the Scanner GlassCleaning the Automatic Document Feeder To clean the ADFReplacing the ADF PAD Assembly To replace the ADF Pad assemblyTroubleshooting Problem The scanner won’t scan. What’s wrong?Problem How do I uninstall PaperPort? HOW to Uninstall Your Scanner Uninstalling the Visioneer 9450 SoftwareHOW to Uninstall Your Scanner For Windows 2000 and XP HOW to Uninstall Your Scanner Uninstalling the Paperport Software HOW to Uninstall Your Scanner Contacting Visioneer America Technical Support Contacting VISIONEER-INTERNATIONAL Technical Support Visioneer 9450 Scanner Specifications Visioneer 9450 Scanner Parts List Part NameVisioneer 9450 Scanner Installation Guide D E