Hello Blue Devil,
we have tried to implement the suggested best practices but unfortunately, we were not able to make the recognition of text zones in our document.
Based a tutorial for application creation, we followed the same steps, and by pure coincidence, the recognition process worked for us without any image enhancements.
The only difference that exists between what we were doing and what the tutorial is the fingerprints configuration.
To make the recognition work we have to run our test, and in the phase of page identification we have to pause the test and go to fingerprints configuration and make a refresh. Once it's done, the new scanned image is loaded as new fingerprint but without any zones on it. So, if we redefine our zone in that new fingerprint, and resume the test, the recognition work successfully.
This configuration work of course that when we enable the "Learn new Fingerprints " option at the "Page Identification" ruleset.
We tested this configuration for deferent images with different resolutions, the recognition always works.
At this stage we concluded the following:
- No image enhancements are needed
- The main problem with recognition is due to fingerprinting which does not work properly
- The application is unable to process the fingerprint configuration and presume that it is the same document, then applies the zones configuration that we already defined.
We note that in order to configure fingerprints for our application, we :
- Create a fingerprint class.
- Add fingerprint image.
- Assign fingerprint to fingerprint class.
- Select page type.
- Assign zones.
Could you please advise on this issue?
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Yassine Bounagui
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Original Message:
Sent: Mon November 28, 2022 01:09 PM
From: Blue Devil
Subject: Issue with ID card and passport recognition in IBM Datacap 9
Make sure the image is in black and white.
The root cause of your issue is OCR can not recognized the text from your image thus causing issue with down stream task to your zone.
I would play around with basic black and white image, play around with image enhancement.
If you can't read the text with your naked eyes, the engine can only do so much.
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Blue Devil
Original Message:
Sent: Mon November 28, 2022 12:56 PM
From: Yassine Bounagui
Subject: Issue with ID card and passport recognition in IBM Datacap 9
Hello Blue Devil,
Thanks for the reply.
The image enhancement has been done through Datacap image enhancement.
We also tried to rewrite the image text using a third party solution and ensure that the text is still readable after several zooms on the image. The text is not detected despite that.
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Yassine Bounagui
Original Message:
Sent: Mon November 28, 2022 12:38 PM
From: Blue Devil
Subject: Issue with ID card and passport recognition in IBM Datacap 9
When you say " different image enhancement methods " is that part of Datacap image enhancement or some third party tool?
FP zone failing is because it can't read the text after recog engine was ran.
Why not add a create text to see if the image texts are detected just to prove a point why the zone failed. Perhaps it's not reading the text off the image.
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Blue Devil
Original Message:
Sent: Fri November 25, 2022 05:06 AM
From: Yassine Bounagui
Subject: Issue with ID card and passport recognition in IBM Datacap 9
Hello community,
We have some issues configuring a new application for ID card and passport recognition in IBM Datacap 9. We successfully tested the same application for some basic documents (blank document with some information on it), all image processing tasks (i.e. vscan, page ID, recognition and extraction) run without any issue. See the image below.We tried to process the scanned ID card with different image enhancement methods to make the image more readable and eliminate any noise that could affect the recognition process, but the latest always fails for unknown reasons. See the following figure.
As we can see, Datacap is unable to detect the zones in the image after running the recognition phase compared to the previous basic document .
At this stage we don't know if there is a special configuration that we should follow in order to make the application recognize the document of type ID card and passport.
Could you please advise us on this issue ?
Thank you in advance.
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Yassine Bounagui
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