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Elements of machine-readable forms
The following elements may be present on a form:
1) Fields for completion and automatic processing. These contain the information to be gathered.
1) Fields for completion and automatic processing. These contain the information to be gathered.
Field type
Comments
Example
A text field for
entering letters,
digits and other
characters
entering letters,
digits and other
characters
See “Form Completion Methods” (page 5).
Checkboxes to be
marked
marked
These may take the form of squares, bubbles etc., or
fields that must be underlined. They are marked using
various symbols: the standard “tick”, the “period”
symbol, the letter “x”, etc.
fields that must be underlined. They are marked using
various symbols: the standard “tick”, the “period”
symbol, the letter “x”, etc.
þ Yes, I like to buy it
ý Scanner is used
o Agree
Radio group
A group of checkmarks in which only one checkmark
can be marked.
can be marked.
þYes oNo oDon’t know
2) Fields that contain significant information, but which are not recognized automatically. Such fields may
contain, for example, personal signatures, company stamps, photos, etc.
3) Explanatory information – any textual or graphic information not subject to recognition. For example, field
headers, completion instructions, additional information, page numbers, etc.
4) Service information. A form may contain a field which is only to be completed with some service information,
e.g. document number, data of document acquisition, client identification number etc. Such information may be
for example entered when forms are handed in to the operator or is entered automatically during the scanning
process.
for example entered when forms are handed in to the operator or is entered automatically during the scanning
process.
5) Reference points. These are special form elements necessary for:
•
matching the template correctly (determination of field locations),
•
compensating any image skew or distortion (linear and non-linear) that may arise during scanning;
•
unambiguous form identification in the case of simultaneous input of forms of different types.
The following form elements may be used as reference points:
Fig. 1. An example of a blank form containing all types of reference points.
Types of machine-readable forms
There are three different form types depending on the method of separating the field contents from the field
borders:
borders:
Reference point types Comments
Black squares
Black squares
Solid black squares
Lines
Horizontal or vertical solid lines.
Static text
Any explanatory information, which is usually textual in form.
Barcodes
Barcodes of the following types: Code 39, Check Code 39, Interleaved 25, Check
Interleaved 25, EAN 13, EAN 8, Code 128.
We recommend that the EAN 13 format be used. An example of barcode creation using
the CorelDraw editor is given in Appendix II.
Interleaved 25, EAN 13, EAN 8, Code 128.
We recommend that the EAN 13 format be used. An example of barcode creation using
the CorelDraw editor is given in Appendix II.