Rock KING how to ignore the outside frame of the license plate

Hello. I'm doing an OCR program to detect the license plate numbers. However, I am having this problem where I specify the return on investment for OCR recognize my characters.

Otherwise the program cannot read the characters correctly due to the presence of an outdoor setting on the image (probably OCR is read as a single character).

Operations I can do to fix this?

Photo 1: This is when the return on investment is not specified

Photo 2: After the return on investment is selected manually

Thank you.

Hello

In fact the answer to this question varies based on the other terms of your system. But first, I think you need to localize the position and angle of the plate.

If we act with the image you shared, you can search the frame of the plate (shape of rectangle) using match game model/geometric model functions, while ignoring the characters inside. After that, you can set a benchmark using the position and angle of it. Then you can select your return on investment and make the system work.

It's just a suggestion, look at the image above, you should find your way, given all the conditions.

Tags: NI Hardware

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