Machine Vision
image stitching
Hi Komal,
I've never tried anything like this myself in LabVIEW, so I did little looking around.
Google points to a lot of white papers on the subject of image stitching. In a quick search I couldn't find any actual mathematical formulas available for download. But they're probably out there.
One photographer's blog pointed to this page:
http://www.kekus.com/download/index.html
One thing I've done in the past myself is to use IrfanView through the command line interface for image manipulations in LabVIEW. IrfanView isn't "free" for commercial use. But it's very well priced. It has the ability to create a Panoramic image. But I'm not sure if this function is available through the command interface, and I can't make any claim to how well this particular function would work for your application.
Good luck.
I've never tried anything like this myself in LabVIEW, so I did little looking around.
Google points to a lot of white papers on the subject of image stitching. In a quick search I couldn't find any actual mathematical formulas available for download. But they're probably out there.
One photographer's blog pointed to this page:
http://www.kekus.com/download/index.html
One thing I've done in the past myself is to use IrfanView through the command line interface for image manipulations in LabVIEW. IrfanView isn't "free" for commercial use. But it's very well priced. It has the ability to create a Panoramic image. But I'm not sure if this function is available through the command interface, and I can't make any claim to how well this particular function would work for your application.
Good luck.
Hi Komal!
A couple of other thoughts on stitching that you may find useful.
Try to slightly overlap the images by a few pixel. This makes for a better result, when trying to stitch. You can use a correlation or cross-correlation algorithm to then find similar parts in both overlapping portions and then align the image for proper merging.
Another thought, you could also use a line scan camera and create long continuous strips of images, if that is feasible for your application. That way you don't need to worry about stitching, unless you need image tiling, meaning stitching in X and Y direction.
In any case, you would have to come up with a "hand coded" algorithm, or hire a company like ours.
Best,
Markus Tarin
A couple of other thoughts on stitching that you may find useful.
Try to slightly overlap the images by a few pixel. This makes for a better result, when trying to stitch. You can use a correlation or cross-correlation algorithm to then find similar parts in both overlapping portions and then align the image for proper merging.
Another thought, you could also use a line scan camera and create long continuous strips of images, if that is feasible for your application. That way you don't need to worry about stitching, unless you need image tiling, meaning stitching in X and Y direction.
In any case, you would have to come up with a "hand coded" algorithm, or hire a company like ours.
Best,
Markus Tarin
