Of course, it's up to you which image or part thereof you send to tesseract. 
You just need to use your vb image processing libraries to create a new image 
from a rectangular region of the source image.

Sent from my iPhone

> On 25 Mar 2015, at 22:07, Faissal Bouetire <[email protected]> wrote:
> 
> Hi every one
> 
> i m new in tesseract i want to know if its possible to ocr just a defined 
> part of an image i use vb.net 
> 
> and thanks in advance 
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