Mitsubishi Electronics DV1248ST user manual Threshold button

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Threshold button

Threshold function is very useful when you scan line art images or scan documents for OCR (optical character recognition) use. You may use this function to adjust the quality of line art images or eliminate unwanted dots in the document to improve the accuracy of recognition.

Note: this function is only applicable when you select Line Art as the Image Type.

Select the Threshold button, and the Threshold dialog box will appear:

The x-axis in the histogram represents the brightness level of the pixels in the image (from 0 to 255, from left to right). The y-axis represents the quantity of pixels.

To adjust the threshold value, drag the triangle below the histogram or enter the threshold value in the Threshold entry box directly. For example:

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Contents Diamond View DV1248ST Page Contents Photo Express Troubleshooting and FAQ Important Safety Instructions Page FCC Information Diamond View Scanner Driver Screen Check the Package Contents Setting UP Your ScannerInstalling the Scsi Interface Card Unlock the Protection Switches Connect the Scanner to Your Computer Install the Transparency UnitTest the Scanner Driver & Application Installation Page Introduction to Scanning Diamond View Main Screen Scanning reflective originals Scanning Reflective and Transparent OriginalsPage Scanning Mounted Slides Scanning transparent originalsScanning Positive Films Scanning Film StripsPage Menu Bar Understanding Diamond VIEW’S FunctionsFile submenu Scan Size… Settings Sub-menuMonitor Gamma Help Sub-menu Original Box Combo BoxesReflective Flatbed TransparentColour RGB Image Type BoxGrey Line ArtResolution Box Scan Mode BoxHigh Quality 48 bit mode High Speed and High Quality 24 bit modesScenarios for using a High Resolution Scan Filter Box Scaling BoxSharpen more Descreen Box Auto Density Colour Wizard BoxPhoto Magic Film WizardOutput Device Color MatchingJob List Job List and Command ButtonsInfo Button Duplicate ButtonDelete Button Preview ButtonTool Bar Preview AreaSelection Button Hand Button New Frame ButtonZoom Button Colour Channel box Level ButtonHistogram Image Threshold Output Level box Input Level boxTonal Map Curve ButtonInput/Output Status Area Colour Balance Button Adjustment AreaChannel Colour Wheel Colour Adjustment buttonLightness Bar Entry BoxBrightness control Brightness/Contrast buttonContrast control Threshold button Mirror button Invert buttonAuto Rotate buttonAuto Crop Auto buttonPixel Display Box Status AreaPixel Information Area Image Information AreaIntroduction Photo ExpressTool Bar Workspace Getting StartedPage Working with Album Getting ImagesTo create a new Album Printing album thumbnails To add new images to an albumWorking with Images Adjusting ImagesTo re-align a photo To trim your photo To re-size your photo Printing Images Sharing ImagesTo print an image To save a photo Saving ImagesCreate Calendars Express YourselfTo create calendars To morph an image Morphing PhotosTo Begin a New Project Working in Project ModeTo replace images in a template Working with TemplatesTo move one object over another To add special edge effects to a photo object Adding DecorationTo add frame to a photo object To print a template as name cards Printing TemplatesTo e-mail a template Sharing TemplatesTo fax a template To output a template as a WebDiamond View Copier Adjusting Copier SettingsCopier Parameters IconsBrightness and Contrast Information WindowNumber of Copies Buttons How to Use Copier Memo Finereader Sprint OCR To recognize a document using the Scan&Read button Scan Push the Scan&Read buttonSave the result Recognize the scanned imageTips for Improving Recognition Quality Introduction to Scan Button Scan ButtonButton View Scan Button SettingsQuick Scan Scan to Printer Scan to FileScan to OCR Scan to FAXScan to Application Troubleshooting Troubleshooting and FAQTPO lamp goes out when I lift the TPO unit Packing Directions Service and Support InformationReturning Your Scanner for Service APPENDIX. Diamond View Main Screen Guide Diamond View Main Driver Screen Guide