Question

Simple BITMAP OCR .NET C#

Asked by: RajeshPixel

Hi

I am looking for .NET C# code that will look at a bitmap and check if a particular word is in it (the same word every time).

I am also then looking for code that will check a bitmap and return the numbers in it. The bitmap will always have numbers in it and they will always be the same size and font type.

The Bitmap is attached and called Station2.bmp. My application (VS2008 C#) will get the bitmap for the screen and it will be the same size and font every time. I need a function that I pass the bitmap to and it will return true if it contains the word Station else false if not.

I am also looking for code that will check a bitmap that I pass and return a string/float of the number that is in the bitmap. I have attached examples name Price1 through to Price10 that show all the possible numbers. The price number can be any amount up to 100,000,000,000.00 and it will always be the same colour and font as the examples.

Both these functions should be written in C# for VS2008 but if not as long as I can use them from my application I will be happy.

Thanks in advance.

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Asked On
2009-06-19 at 03:41:54ID24505297
Tags

C#

,

OCR

Topic

C# Programming Language

Participating Experts
1
Points
500
Comments
3

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Answers

 

by: RajeshPixelPosted on 2009-06-19 at 03:45:54ID: 24665168

Hi
If you want me to create a new question for the second function I will do it:)

Thanks in advance!

 

by: dbrckoviPosted on 2009-06-20 at 10:02:51ID: 24674407

Hi.

Programming OCR is not easy. It takes a lot of people, knowledge and time to create OCR program from scratch, so I doubt someone will pop some code in C# which will do what you want.
The only way you could do this is to find some existing OCR program or DLL and try to call its functions from your application.

I found demo of one souch DLL here, but it's not free. It will remind you to buy it every time you scan an image:
http://asprise.com/product/ocr/download.php?lang=csharp
You can download it and try its sample project, but first you'll have to do something about your images.
They are white letters on gray background with black shadow, and something like this is hard to read to any OCR which is not built to read just these kind of characters.  
For example, when I tested the sample project, your images retuned results like '?|??|??|?|?||?', then I created a white image in paintbrush and typed the word 'Station' in black and this worked perfectly.

Secondly, I couldn't load your images in .NET, Photoshop or this sample project, so I'm assuming you saved them in some format which is not widely supported. However, I was able to open them in paintbrush and re-save them as 24bit BMP. Then I could open them anywhere.

 

by: RajeshPixelPosted on 2009-06-22 at 21:56:11ID: 31595368

Thanks dbrckovi

20120131-EE-VQP-002

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