Convert image to text

//create object of MODI document
  	  MODI.Document doc = new MODI.Document();
	//Initialise and create the document
        doc.Create(FileUpload1.PostedFile.FileName);
	//Process the sacnned image with specified language
        doc.OCR(MODI.MiLANGUAGES.miLANG_ENGLISH, false, true);
        MODI.Layout layout = ((MODI.Image)doc.Images[0]).Layout;

        string str = String.Empty;
	//Extract the letters and read
        for (int i = 0; i < layout.Words.Count; i++)
        {
            MODI.Word word = (MODI.Word)layout.Words[i];
            if (str.Length > 0)
            {
                str += " ";
            }
            str += word.Text;
        }
        doc.Close(false);