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OCR failing on "easy" image

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Hello, I'm using EmguCV to be able to use openCV on .NET, I tried to ask them about this bug, but they said that it's probably something with OpenCv I'm trying to get some numbers from an image, and to make things easier, I'm filtering the numbers and converting them into a black/white image (Im doing that, because after some tests I saw OpenCv is a lot more precise). Here is the image: ![image description](/upfiles/14477851177211585.png) But when I call the Ocr.Recognize() on EmguCv, it's not returning any character, im filtering it as (white_list = "1234567890"). Most of the times it happens with "easy" numbers, like "1000", or "8001000" etc, if someone could take a look on that would be great, because I'm not sure if I'm doing something wrong since most of the tests worked good. Thank you.

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