DeskewCommand don't deskew my images.

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This topic and its replies were posted before the current version of LEADTOOLS was released and may no longer be applicable.

#1 Posted : Monday, May 16, 2011 6:30:16 AM(UTC)

Benjamin

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Posts: 16

Hello,

I'am using Leadtools V16.5 and VS2010 C#4.

I need to deskew an image but the DeskewCommand does nothing. I try to configure the command with the flags property but it change nothing.

Please, can you try to process the images in attachment and give me your flags parameter ?

Thanks for the support.

Benjamin

File Attachment(s):

images.zip (464kb) downloaded 31 time(s).


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#2 Posted : Monday, May 16, 2011 12:47:30 PM(UTC)

Ryan

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Hello,

LEADTOOLS did not did not introduce the .NET 4.0 assemblies until v17.

However in .NET 3.5 I was able to deskew these images by just passing
DeskewImage flag and running the command. Exactly as the documentation example does it.
command.Flags = DeskewCommandFlags.DeskewImage | DeskewCommandFlags.DoNotFillExposedArea;

Deskew Command Documentation:
http://www.leadtools.com/Help/LEADTOOLS/v16/DH/PO/Leadtools.ImageProcessing.Core~Leadtools.ImageProcessing.Core.DeskewCommand.html

Deskew Command Flags:
http://www.leadtools.com/Help/LEADTOOLS/v16/DH/ID/Leadtools.Services.ImageProcessing.DataContracts~Leadtools.Services.ImageProcessing.DataContracts.DeskewCommandFlags.html

I'd recommend playing with different diskew flags in our Document Clean Up demo. The flags are set in the Deskew Dialogue.

#3 Posted : Tuesday, May 17, 2011 1:53:56 AM(UTC)

Benjamin

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Posts: 16

Ok, thanks for the suport.

I have a second question about this image.
We are sanning a book and as you can see, the text have a small curving angle. This is due to the bookbinding. How can i process the image to realine the text ?

You can find in attachment the same image after the deskew and cleaning processing.

File Attachment(s):

images.zip (464kb) downloaded 35 time(s).

#4 Posted : Tuesday, May 17, 2011 6:22:43 AM(UTC)

Ryan

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The toolset doesn't have any tools to do this automatically.

The images you included only seemed to have very minute curving, if any. Are you trying to clean up the images for OCR? That small of a curve shouldn't effect OCR results.

Regardless, there might be a few methods you could go about this. One suggested would be to use the BendCommand.

http://www.leadtools.com/Help/LEADTOOLS/v16/DH/PS/topic83.html

As I said though this isn't automatic. Obviously it would vary from image to image.

#5 Posted : Tuesday, May 17, 2011 6:48:51 AM(UTC)

Benjamin

Groups: Registered
Posts: 16

Ok, I will take a look at the BendCommand.

I am not using the OCR process, it's only for generate TIFF Group 4 and PDF.
It should be cool if Leadtools include a tool for processing automaticaly the text alignment.

Thanks for the support and your amazing library !

Benjamin

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