Read-Write Property.
Type L_DISCMARGIN_ENUM
The discrimination margin is the degree of difference in darkness that is permitted for valid marks. This is equivalent to the Discrimination dropdown list on the Scanner Control Tab on the Scanning options dialog.
CAUTION: For SelfScore scanners, OMR mark threshold, mark discrimination cutoff, form ID mark threshold, and litho-code mark threshold are set by the scanner. Mark threshold can be set via the SelfScore scanner's control panel; the other values are predetermined. If your application settings differ from the SelfScore scanner settings, the application settings are overridden and no warning message is displayed to the user.
propget, HRESULT DiscriminationMargin([out, retval] L_DISCMARGIN_ENUM *pVal);
propput, HRESULT DiscriminationMargin([in] L_DISCMARGIN_ENUM newVal);
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L_DISCMARGIN_INAPP (Default) |
Use discrimination margin specified in the application. |
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L_DISCMARGIN_SELFSCORE |
SelfScore scanners always use a discrimination margin of 3. See CAUTION above. |
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L_DISCMARGIN_LOW |
A discrimination setting of Low causes ScanTools Plus to pick one mark over another, even if they are very similar. Same as the Low keyword in ScanTools Plus. Low is the same as the value of 3. |
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L_DISCMARGIN_MEDIUM |
A discrimination setting of Medium balances picking one mark over another based on their differences, without requiring moderate differences. This is the setting to use for most normal scanning tasks. Same as the Medium keyword in ScanTools Plus. Medium is the same as the value of 3. |
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L_DISCMARGIN_HIGH |
A discrimination setting of High causes ScanTools Plus to pick one mark over another only if they differ significantly. Same as the High keyword in ScanTools Plus. High is the same as the value of 4. Some application definitions enable you to select numeric values for discrimination. The higher the number, the greater the discrimination. Valid values are: L_DISCMARGIN_3 L_DISCMARGIN_4 L_DISCMARGIN_5 L_DISCMARGIN_6 L_DISCMARGIN_7 L_DISCMARGIN_8 L_DISCMARGIN_9 L_DISCMARGIN_10 L_DISCMARGIN_11 L_DISCMARGIN_12 L_DISCMARGIN_13 L_DISCMARGIN_14 L_DISCMARGIN_15 |
How to Implement Event Driven Scanning
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See Help on Help for additional information on using this help file. See Scantron Technical Support for additional information on technical support and training options. See the ScanTools Suite System Requirements for further details on hardware and software requirements. ScanTools is a suite of products; the specific information you want may appear in the help for a different module. If you don't find what you're looking for here, try one of the following:
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Scantron Corporation
Customer Service (forms, products, and services): 1-800-SCANTRON (722-6876) Technical Support: 1-800-445-3141 |
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