How the pat_RecogMatch_Id action works

When Datacap runs the pat_RecogMatch_Id action, it gathers all the anchor objects from the fingerprint library and looks for a match on the current page.

For each anchor object, Datacap searches the current page in a region 400 pixels greater in each direction than the text zone defined in the fingerprint. If it finds a match that meets the required confidence level, it sets the page type and computes the offset values.

Restriction: The METRIC variable does not change the size of the search region that is used by pat_RecogMatch_Id.

The following RRS log entries illustrate how pat_RecogMatch_Id works.

Created PatternMatch Object
Aquired PM lock
Opening 'provider=microsoft.jet.oledb.4.0;
     data source=C:\Datacap\TravelDocs\TravelDocsFingerprint.mdb;persist security info=false'
Fingerprint/Rules Database connection established.
#572, path:'C:\Datacap\TravelDocs\fingerprint\572.cco'
FPZone:'1384,313,1529,392' TXTZone:'1408,334,1498,359' Value:'Room'  1 
FPZone:'697,1988,1006,2074' TXTZone:'758,2018,811,2036' Value:'Hotel #3'
----------------------------
ANCHOR TEXT:'Room'--->'R[oO0][oO0]m' METRIC:'400,400'  2 
SEARCH AREA:'Hotel #3
Room
Check out Wed Nov 24 2010
speed internet microwave fridge    3 
$109 95
$329 85'
Matched Value >>Room<<   4 
Check FingerPrintID# 572 Match Confidence: 9. Search Area: 1008,0,1700,759
Offset(-80,-100)  5 
----------------------------
ANCHOR TEXT:'Hotel #3' ---> 
     '[Z2][oO0][\(\)iItl1][oO0][\ ]*H[\(\)iItl1][\(\)iItl1][\(\)iItl1][\(\)iItl1][oO0]p[\ ]*H[oO0]
     [\(\)iItl1]e[\(\)iItl1]s' METRIC:'400,400'
SEARCH AREA:'Hotel #3'   6 
Matched Value >>Hotel[SPACE CHARACTER]#3<<
Check FingerPrintID# 572 Match Confidence: 9. Search Area: 358,1618,1211,2200
Offset(-100,-101)
RecogMatch FingerPrint#:572 PAGETYPE:Room_Receipt   7

RRS log entry	Description
1	The action finds two anchor zones that are defined in fingerprint 572: `Room` and `Hotel #3`.
2	It computes a bounding region 400 pixels greater in each direction than the region (`TXTZone`) defined in the fingerprint CCO file for the first anchor value (`Room`).
3	It identifies all the text within that bounding region on the current page.
4	It locates the anchor value `Room` within the search region.
5	It computes the offset by comparing the word's position on the page to the position in the fingerprint.
6	It repeats the process for the second anchor value.
7	It sets the page's template ID and type because at least one of the zones matched.