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#1
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"Virtual" wide angle via stitching seems to have less distortion
I was playing with a 3x3 stitched image today and for fun did a
comparison with a standard single shot: http://satin.sensation.net.au/rowan/widecompare.jpg I found it interesting that although the stitched image has a noticeably wider FOV, there's a lot less perspective distortion. Unfortunately, it's a lot of work (and CPU time) to stitch 9 images into one! |
#2
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"Virtual" wide angle via stitching seems to have less distortion
rowan194 wrote:
I was playing with a 3x3 stitched image today and for fun did a comparison with a standard single shot: http://satin.sensation.net.au/rowan/widecompare.jpg I found it interesting that although the stitched image has a noticeably wider FOV, there's a lot less perspective distortion. Unfortunately, it's a lot of work (and CPU time) to stitch 9 images into one! Since the software has to do a little stretching when it does the stitching, I suggest that it is correcting some of the distortion, just as you might have done to the single image. -- Joseph Meehan Dia duit |
#3
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"Virtual" wide angle via stitching seems to have less distortion
rowan194 ) a écrit
dans oups.com : I was playing with a 3x3 stitched image today and for fun did a comparison with a standard single shot: http://satin.sensation.net.au/rowan/widecompare.jpg I found it interesting that although the stitched image has a noticeably wider FOV, there's a lot less perspective distortion. Unfortunately, it's a lot of work (and CPU time) to stitch 9 images into one! yes. however, some software (even freeware) exit to correct te lens distortion. like this one : http://www.photo-freeware.net/ptlens.php -- Cordialement, Alf92 ====== http://petition.la-bas.org/ |
#4
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"Virtual" wide angle via stitching seems to have less distortion
"rowan194" wrote in message oups.com... I was playing with a 3x3 stitched image today and for fun did a comparison with a standard single shot: http://satin.sensation.net.au/rowan/widecompare.jpg I found it interesting that although the stitched image has a noticeably wider FOV, there's a lot less perspective distortion. Unfortunately, it's a lot of work (and CPU time) to stitch 9 images into one! I have done some good 7 shot wides and one 13 that was far more than one lens could do. |
#5
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"Virtual" wide angle via stitching seems to have less distortion
Alf92 wrote:
yes. however, some software (even freeware) exit to correct te lens distortion. like this one : http://www.photo-freeware.net/ptlens.php More good stuff here, including a list of software at the bottom of the page: http://www.panotools.info/mediawiki/...rrection_model BugBear |
#6
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"Virtual" wide angle via stitching seems to have less distortion
rowan194 wrote:
I was playing with a 3x3 stitched image today and for fun did a comparison with a standard single shot: http://satin.sensation.net.au/rowan/widecompare.jpg I found it interesting that although the stitched image has a noticeably wider FOV, there's a lot less perspective distortion. Unfortunately, it's a lot of work (and CPU time) to stitch 9 images into one! as you would expect shooting at a more standadard focal length for the stiched shot. to avoid prbelms with distortion when making long panoramas I generally get best result around the 40mm equivilant. When I do this the stitches are often seemless. kosh |
#7
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"Virtual" wide angle via stitching seems to have less distortion
kosh wrote:
rowan194 wrote: I was playing with a 3x3 stitched image today and for fun did a comparison with a standard single shot: http://satin.sensation.net.au/rowan/widecompare.jpg I found it interesting that although the stitched image has a noticeably wider FOV, there's a lot less perspective distortion. Unfortunately, it's a lot of work (and CPU time) to stitch 9 images into one! as you would expect shooting at a more standadard focal length for the stiched shot. to avoid prbelms with distortion when making long panoramas I generally get best result around the 40mm equivilant. When I do this the stitches are often seemless. kosh yes, most books on the matter suggest using normalish (50mm) focal lengths. They also suggest turning the camera into 'portrait' mode to get more vertical coverage and take more frames to cover the horizontal. Nige |
#8
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"Virtual" wide angle via stitching seems to have less distortion
On Sat, 01 Jul 2006 10:33:59 +1000, Nige wrote:
yes, most books on the matter suggest using normalish (50mm) focal lengths. They also suggest turning the camera into 'portrait' mode to get more vertical coverage and take more frames to cover the horizontal. The reason you do that is you have the best stitch results if the middle of your picture lines up with the horizon. And in the portrait orientation you'll get more of the scene below the horizon. Don www.donwiss.com/pictures/ (e-mail link at page bottoms). |
#9
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"Virtual" wide angle via stitching seems to have less distortion
On Fri, 30 Jun 2006 23:45:33 GMT, kosh wrote:
to avoid prbelms with distortion when making long panoramas I generally get best result around the 40mm equivilant. When I do this the stitches are often seemless. For those of us stuck in the Point&Shoot world, this is easy advice to follow. My latest attempt at stitching, 3 frames with an FZ5 (widest focal length 36mm): http://ri22.uchicago.edu/~dmsilev/tibetan_concert.jpg It stitched pretty well, except for a few inconsiderate people in the foreground who moved around a bit between frames. -dms |
#10
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"Virtual" wide angle via stitching seems to have less distortion
Stitching is great fun...but the reason it doesn't distort is 1) software
correction and 2) you are not using an extreme wide angle....so you start with less distortion. -- Thanks, Gene Palmiter (visit my photo gallery at http://palmiter.dotphoto.com) freebridge design group "Pete D" wrote in message ... "rowan194" wrote in message oups.com... I was playing with a 3x3 stitched image today and for fun did a comparison with a standard single shot: http://satin.sensation.net.au/rowan/widecompare.jpg I found it interesting that although the stitched image has a noticeably wider FOV, there's a lot less perspective distortion. Unfortunately, it's a lot of work (and CPU time) to stitch 9 images into one! I have done some good 7 shot wides and one 13 that was far more than one lens could do. |
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