About Mark Detection Zones

Mark Detection is a method of detecting the presence or absence of an ink mark within a specific area that is used to convey some intended information.

Good document design and clear instructions to respondents are very important in getting high accuracy. Printing model samples of ideally filled and filled-in-error checkboxes in the instructions is recommended. Respondents should be urged to fill in the document with a dark blue or black pen. Pencils are to be avoided, as are pens with an ink color close to a dropout color if the form is color is dropped during scanning.

Mark Detection setup allows you to define:

• The name of the Mark Detection zone.

• The physical location where you will find the mark (zone location on the image).

• The value when a mark is detected.

• The value when a mark is not detected.

• If the mark is contained within a frame such as a box or circle.

• The sensitivity to distinguish a mark due to random dirt or scratch “noise”.

• A group of mark detection zones to return a single set of values.

Use the Bar Code, OCR and Mark Detection Setup option on the Capture tab in the Job Setup dialog box to setup the mark detection parameters for one or more Mark Detection zones.

 

Batch and document separation is not provided for Mark Detection zones.

For best results, use 300 dpi resolution images.