OCR means Object Character Recognition . It is a technique by which we select a portion of the image as per user need.

This process requires getting the dimension of selected screen and converting in an image for use.

These are the pre-processing steps often performed in OCR :

Binarization
• Usually presented with a image, conversion is then simply a matter of choosing a maximum value.

Morphological Operators
• Remove empty things in characters, can use the majority operator.

Segmentation
• Check connectivity of shapes, label.

Third Party Tool for Performing OCR

  private static void ReadTextFromImage(String ImagePath)  
        {  
            try  
            {  
                // Grab Text From Image  
                MODI.Document ModiObj = new MODI.Document();  
                ModiObj.Create(ImagePath);  
                ModiObj.OCR(MODI.MiLANGUAGES;ENGLISH, true, true);  

                //Retrieve the text gathered from the image  
                MODI.Image ModiImageObj = (MODI.Image)ModiObj.Images[0];  


                System.Console.WriteLine(ModiImageObj.Layout.Text);  

                ModiObj.Close();  
            }  
            catch (Exception ex)  
            {  
                throw new Exception(ex.Message);  
            }  
        }