NOTE: This function should be used only for diagnostic purposes, and under the supervision of Scantron. It is NOT intended for use by customers, and should be used only when advised by Scantron support personnel. Altering the Scantron default settings can impact the integrity of the data collected, and it nullifies the published Scantron Scannable Documents Guarantee.
The Image Parameter Tuning dialog is accessed from the Diagnostic menu and lets you set these parameters:
Setting of how dark a pixel must be to count as the edge of a timing mark.
Setting of how light a pixel must be to count as the edge of paper.
Number of pixels of skew tolerated in timing mark alignment.
Number of pixels of skew tolerated on the leading edge of the form.
Number of pixels of skew tolerated on the trailing edge of the form.
Number of pixels of skew tolerated on the guide edge of the form.
For OpScan iNSIGHT 70/150 and 5000i scanners only. With the top camera, the observed width in pixels of an 8.5" sheet of paper. This value determines the actual horizontal resolution as opposed to the nominal value of 240 dpi. This value is used only at scan time; it does not affect portability of clips.
For OpScan iNSIGHT 70/150 and 5000i scanners only. With the bottom camera, the observed width in pixels of an 8.5" sheet of paper. This value determines the actual horizontal resolution as opposed to the nominal value of 240 dpi. This value is used only at scan time; it does not affect portability of clips.
NOTE: The Reset and Default buttons are two entirely different functions. Read the following two paragraphs so that you do NOT confuse these two functions. Remember that altering the Scantron default settings can impact the integrity of the data collected, and it nullifies the published Scantron Scannable Documents Guarantee.
Select the Reset button to restore the Image Parameter Tuning values that were displayed when this dialog first appeared. Use this operation when you have adjusted one or more of the values while this dialog is active and need to return to a known set of values present at the beginning of this session. These are not necessarily the default values.
Select the Default button to return the Image Parameter Tuning values to the Scantron recommended default values. Use this button to ensure that you are using the default values or to return to the Scantron recommended values after scanning documents with non-standard values.
The Default values are:
|
Timing Mark Threshold |
90 |
|
Edge Threshold |
90 |
|
Timing Mark Tolerance |
7 |
|
Leading Edge Tolerance |
8 |
|
Trailing Edge Tolerance |
16 |
|
Vertical Edge Tolerance |
8 |
|
Top Sheet Width |
2030 |
|
Bottom Sheet Width |
2030 |
|
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:
|
Scantron Corporation
Customer Service (forms, products, and services): 1-800-SCANTRON (722-6876) Technical Support: 1-800-445-3141 |
|
|
Copyright © 1998-2012 Scantron Corporation. All rights reserved. Use permitted only under license. www.scantron.com. No part of the Help or user guides may be reproduced in any form, or by any means, without express permission from Scantron Corporation. LINKS TO THIRD PARTY SITES This help system may contain links to third party websites ("Linked Sites"). The Linked Sites are not under the control of Scantron and Scantron is not responsible for the content of any Linked Site, including without limitation any link contained in a Linked Site or any changes or modifications to a Linked Site. Scantron is not responsible for web casting or any other form of transmission received from any Linked Site. Scantron provides Users with the ability to link the Assessment System to the Linked Sites as a convenience to you, and the inclusion of any link does not imply endorsement by Scantron of the Linked Site or any association with its operators. |
||