7.6

that the color threshold level will be calculated automatically depending on the image. By default Threshold level
[0..255] is 0. This parameter is ignored with binary images (black and white images).
On Error Tab
The On Error Tab is common to all tasks. Details can be found on Task Properties Dialog.
If storing the message or ID, if they are store in a jobinfo they will be available in any error handling process where errors are
being forwarded. In all cases, if your process continues after the error, the contents of the variables selected in this window
will be available for the rest of your process, or whenever they are overwritten.
Metadata Implementation
The Barcode Scan task reads each scanned file and outputs the values read from barcode(s) on the page(s) into metadata
depending of the selected Process by option:
l If the selected option is process by page, then the metadata file is created and overwritten for each new scanned
page.
l If the selected option is process by file, thenonly one metadata file will be created(or updated).
Note: If metadata was created previously in the process, the task only adds new fields to the existing metadata at the datap-
age level.
Metadata Fields
The barcode valuesare stored at the datapage level of the metadata. In the following defintions, the first 2 metadata fields are
for standard use,while the next 8 fields contain '_1_' in their name. This number represents the barcode index on the page. If
there is more than one barcode on the same page, these metadata fields will be defined as many times as there are barcodes
on the page, except that the middle number (..._X_...) will increment according to the barcode index (e.g. Barcode_2_Value,
Barcode_3_Value, etc.).
l BarcodeValue: Metadata field representing the value of the barcode. When multiple barcodes are present on the
page, this field is present multiple times.
l BarcodeCount: Metadata field representing the number of barcodes on the page.
l Barcode_1_Value: Metadata field representing the value of the first barcode on the page.Note that thisfield (Bar-
code_1_Value) contains the same value as the first occurrence of BarcodeValue.
l BarcodeBase64_1_Value: Metadata fieldcontaining the value of the first barcode, encoded in Base64.
l Barcode_1_Type: Metadata fieldcontaining the type of the first barcode (ex. EAN13, UPCA …).
l Barcode_1_Orientation: Metadata fieldcontaining the orientation of the first barcode.
l Barcode_1_Top: Metadata fieldproviding the distance (in pixels)from the top of the page to the top of the first bar-
code.
l Barcode_1_Bottom: Metadata fieldproviding the distance (in pixels) from the top of the page to the bottom of the
first barcode.
l Barcode_1_Left: Metadata fieldproviding the distance (in pixels) from the left of the page to the left side part of the
first barcode.
l Barcode_1_Right: Metadata fieldproviding the distance (in pixels) from the left of the page to the right side part of
the first barcode.
Accessing Barcode Value From a Workflow Tool