Below is a list of things that you can try adjusting in order to improve FORMS’ interpretation rate.
See to it that adjustment fields are chosen wisely.
Ensure that stray marks (noise) and filled-in data are removed from the form definition and especially from inside individual field definitions. How?
Be sure that all double-clickable field definitions are indeed double-clicked. If field definitions are based on support lines or are hand-drawn, experiment with the position.
Select Activate handwriting style context whenever appropriate.
In certain cases, VBA field validations may improve interpretation.
Try processing forms that contain typical respondent errors (for example, entering invalid product numbers, writing outside of the field area, scratching out one mark field and marking another, and so on). Can you add more field validations or other field options to compensate for respondents’ errors? Can you improve the format specification?
Whenever possible, avoid specifying alphabetic and numeric characters in a single character position. In other words, use A or N rather than X. (See Specification of character, object and data fields.)
Use active validation whenever possible.
Select Fixed character width whenever appropriate.
Try using field filters on character fields.
Adjust the security level to suit the circumstances.
Depending on the material to be interpreted, using a specific add-on engine – either alone or in combination with FORMS’ internal engine – may provide better recognition.
Ensure that the character set of the language you are interpreting contains all of the characters that occur in your material. Delete characters that never need to be interpreted. (Instructions.)
Whether you are scanning forms and interpreting them from FORMS’ internal database or importing image files to FORMS, you want to be sure you are working with the best images you can create with your equipment.
Experiment with contrast.
If your scanner has an image processing card, use it. See Scanner settings.
If you are scanning color or grayscale forms, two things that can improve interpretation are adjusting FORMS' conversion of the image to black and white and editing field colors.
If you are processing forms with dropout colors that appear in the images as a grainy, dirty background, color lamps or color filters may be necessary.