Bad OCR Result

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This topic and its replies were posted before the current version of LEADTOOLS was released and may no longer be applicable.

#1 Posted : Friday, March 22, 2013 10:09:02 PM(UTC)

Hooyoo

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Posts: 3

I tried OCR feature in my application. Generally the OCR results are pretty good, but in some cases it's really bad. Attachment is bad example, why ID number are totally lost?


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#2 Posted : Friday, March 22, 2013 10:11:48 PM(UTC)

Hooyoo

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Posts: 3

forgot the attachment.

btw: after ocr, the word list are:
ID:I 1.5 IN Di% F 029Y CR201302160762

File Attachment(s):

badocr.zip (74kb) downloaded 39 time(s).

#3 Posted : Sunday, March 24, 2013 5:41:03 AM(UTC)

Daoud

Groups: Registered
Posts: 256

The image you attached is 24-bit image which contains 256 unique colors. In order to get the best result and performance out of the OCR engine, you have to use 1-bit black and white images. This increase the accuracy of the OCR result plus minimize the memory usage since you will need less memory to load 1-bit images.
After converting your image to 1-bit black and white, I was able to OCR it and get correct results. I'm attaching the converted image. Please take a look at it.

File Attachment(s):

ConvertedImage.zip (3kb) downloaded 40 time(s).

#4 Posted : Sunday, March 24, 2013 10:27:55 PM(UTC)

Hooyoo

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Posts: 3

Thank you so much. It works. :)

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