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#1 Posted : Wednesday, October 27, 2010 8:55:20 AM(UTC)
tteveris

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Posts: 32


Since obtaining a vector fron a raster image is "image processing" I was wondering if LAED had any tools to convert an image to get a centerline or outline of artifacts in the image. I'm looking for something using B/W images. If LEAD does not have anything does anyone know where I could find a solution. I prefer a API that provides a DLL or even source code on the algorithm.

Thanks in advance

 

 

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#2 Posted : Thursday, October 28, 2010 12:43:25 AM(UTC)
Maen Hasan

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There is no general function in LEADTOOLS that will work with any arbitrary shape. However, if your requirements can be defined narrowly, we might have useful function to help with that.
Can you give us some sample images and tell us the exact centerline or outline you want to find from these images? Are there common features for the images and the objects, such as shape, count or location within the image?

Thanks,
Maen Badwan
LEADTOOLS Technical Support
 
#3 Posted : Thursday, October 28, 2010 6:08:34 AM(UTC)
tteveris

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Posts: 32


The attached file shows the centerline (White) generated using CorelDraw x4.

What I would like is the centerline generation and then the centerline corrdinates in a vector form if possible. B/W images are fine for the moment.

 
#4 Posted : Thursday, October 28, 2010 6:10:39 AM(UTC)
tteveris

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Posts: 32


I tried attaching a BMP file but the forum said the file was not attached. Is there another way for you to get it?
 
#5 Posted : Thursday, October 28, 2010 6:12:00 AM(UTC)
tteveris

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Posts: 32


Lets try this. No spaces in the file name.
 
#6 Posted : Thursday, October 28, 2010 6:50:19 PM(UTC)

Walter  
Walter

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If you are attaching a project or file to the forums...
1.) Zip the file(s) up.
2.) Make sure it is less than 5 MB. If it is larger, please send an email to support@leadtools.com and we'll send you FTP instructions.
3.) Remove ANY AND ALL unlock codes and LEADTOOLS DLLs.
4.) Do not click the preview button, the attachment will not show up when you post it.

If you do not wish to post your file(s) on the forum since they are publically viewable, please send an email to support@leadtools.com and make sure that you include a link to this forum post.
Walter Bates
Senior Support Engineer
LEAD Technologies, Inc.
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#7 Posted : Friday, October 29, 2010 3:08:46 AM(UTC)
tteveris

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Posts: 32


Ok, here is the BMP file zipped.
File Attachment(s):
GreatAdventures.zip (14kb) downloaded 24 time(s).
 
#8 Posted : Sunday, October 31, 2010 1:45:32 AM(UTC)
Maen Hasan

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Using our functions, you can find the outline contour of the objects in the image using edge-detection functions (such as the Contour function) and also the middle centerline using the Skeleton function.

However, the result will consist of pixel data and not vector objects. Please see attached image, which has 3 parts:
1) Original: I constructed this by erasing the center line from the sample you sent
2) Contour result.
3) Skeleton result.

Thanks,
Maen Badwan
LEADTOOLS Technical Support
Maen Hasan attached the following image(s):
Results.png
 
#9 Posted : Monday, November 1, 2010 6:02:25 AM(UTC)
tteveris

Groups: Registered
Posts: 32


That look good except it's part of the Medical Toolkit which it way to rich for my blood.

Thanks for pointing this out, I appreciate it.

 
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