Thank you Shree for replying back on the issue. Yes I know about 
ghostscript and its commands, but with the present architecture of project 
we are restricted to acomodate the ghostscript commands. Besides, I am also 
aware of "gsdll32.dll", but as it is not a .Net managed library, and we 
can't reference it directly in a project and moreover we will have to go by 
the PInvoke procedure, hence for all those above reasons and limitations we 
are supposed to stay away from ghostscript.

Do you think we have any better alternative libraries which I can make use 
of so that I would not be getting that error which I mentioned in this post 
?

Thanks in Advance,
Hari

On Thursday, 8 June 2017 21:16:15 UTC+5:30, shree wrote:
>
> Have you tried using ghostscript to convert pdf to tif files instead? 
> Example commands
>
> gs   -r600x600 -sDEVICE=tiffg4   -dFirstPage=106  -dLastPage=109    -o 
> ./tulasi/tulasikrishna%00d.tif  "TulasiPuja.pdf"
>
> for one tif per page
>
> gs   -r600x600 -sDEVICE=tiffg4   -dFirstPage=126  -dLastPage=131    -o 
> ./tulasi/tulasIviShNupUjA.tif  "TulasiPuja.pdf"
>
> for multipage tif
>
> you can reduce resolution to -r300x300
>
> ShreeDevi
> ____________________________________________________________
> भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com
>
> On Thu, Jun 8, 2017 at 7:25 PM, Hari.K <[email protected] <javascript:>> 
> wrote:
>
>> Hi There,
>>
>>     I sometimes receive an error - "Failed to create pix, this normally 
>> occurs because the requested image size is too large, please check Standard 
>> Error Output" when doing OCR on a bitmap image.
>>
>>
>> Below highlighted line is where it's breaking for me - 
>>
>>  Bitmap bitmap;
>> Spire.Pdf.PdfDocument document = new Spire.Pdf.PdfDocument(pdfPath);
>>
>>
>>             for (int i = 0; i <= document.Pages.Count; i++)
>>             {
>>                 bitmap = (Bitmap)document.SaveAsImage(i, 
>> PdfImageType.Bitmap, 200, 200); // where 200 is the DPI which I am 
>> setting for a bitmap image
>>                 ...................
>>                 .................
>>
>>             }
>>
>> More details on what I am trying to do here:
>> 1) Uploaded a PDF document which is of hardly 600KB
>> 2) Iterate through each PDF page and convert it into a BitMap image
>> 3) Then input this BitMap image to Tesseract for performing OCR
>>
>> Please note, I don't get this error often. Any ideas on why this error as 
>> I do not receive this every time ?
>>
>> Looking forward for some inputs on this..
>>
>> Thanks in Advance,
>> Hari
>>
>>
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