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 Detection of ID Cards or Documents in an image

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T O P I C    R E V I E W
macropolo Posted - Jun 23 2025 : 17:48:43
Hi everybody.

Is there any way to recognize using IEVision the coordinates of a "white box" in the image that could be the borders of a page or the borders or a typical ID Card?

This would be to pre-process with not so high CPU consume the image (aimed to video processing) and only after having found the "white box", applying the OCR or BarCode processing on that sector only.

I saw the Image Alignment sample, but it is only partially the way to get what I'm thinking.

Many thanks in advance.

Regards, Pablo.
4   L A T E S T    R E P L I E S    (Newest First)
macropolo Posted - Jul 17 2025 : 16:33:27
Thank you Nigel.

I'm analyzing the examples to see how far can I go towards my need.

Regards, Pablo.
xequte Posted - Jul 11 2025 : 17:08:48
Hi

The two main options would be:

1. Orb Detection: If it is for a set of known samples, e.g German ID's:

http://www.imageen.com/help/TIEVisionORBFeaturesDetector.html


2. Some kind of Neural net based method (either using object classification or just detecting text areas)

http://www.imageen.com/help/TIEVisionNNet.html

Nigel
Xequte Software
www.imageen.com
macropolo Posted - Jul 11 2025 : 08:14:16
Hi Nigel. Sorry I haven't answered to you previously.

The main idea is to detect if you have somehing as and ID Card (parametrized as a white rectangle with a picture in a specific position, for example), so if you recognize that pattern in a live video stream then you make a more in depth processing with an OCR (which can take a much longer CPU processging) to get all the information on it.

This could be an example:




Many thanks in advance!
xequte Posted - Jun 23 2025 : 22:38:21
Hi Pablo

Are you saying it is a document that is not standard (may change from one document to the next)? Are you able to post some examples so we can understand the problem better?



Nigel
Xequte Software
www.imageen.com