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Thread: Stitching vertically AND horizontally?

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    Subscriber Member TRSmith's Avatar
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    Stitching vertically AND horizontally?

    After a stop at Mike Johnston's forum the other day, I found myself linked to a "how to" by a NY photographer that uses a technique of shooting people by stitching lots of shots of the same scene together. Unlike a traditional "panorama" that ends up with a narrow, wide image, his resulting images (made up from as many as 30 frames) were more like a traditionally framed shot. The short video explained how he shoots the scene but not how he stitched the final image.

    So I decided to give it a try and discovered that the stitching process (whether it's done in PS or PTgui) is anything but straightforward. What's the trick? Anyone ever tried this?

    Thanks,
    Tim

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    Sr. Administrator Jack's Avatar
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    Re: Stitching vertically AND horizontally?

    I suspect the most important "trick" if there is one, would be to get all the captures done from the same camera position, as quickly as possible while making sure ISO, WB, exposure and focus are the same. Also, if shooting hand-held panos, the longer the lens the better, and having a fair amount of frame overlap helps a lot too.
    Jack
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    "Perfection is not attainable. But if we chase perfection, we can catch excellence."

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    Subscriber Member TRSmith's Avatar
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    Re: Stitching vertically AND horizontally?

    Yes, that's exactly the advice the photographer gave when describing the shooting process. And that's what I did for my test shots. Everything manual and fixed, with an overlap in the frames shooting a grid pattern of shots in rows going left to right and top to bottom. But when I asked the software to stitch the frames, it became lost and ended up with a jumbled image that required a tremendous amount of finicky hand work to bring it even close.

    I'll try it again and modify my framing, but so far what I've seen is that the software wants to make a long horizontal and can't grok that there's images that belong above and/or below the central image.

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    Re: Stitching vertically AND horizontally?

    i've done 3x3 stitches using CS5 photomerge auto mode with no problem, using nine 16 meg tiff images

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    Subscriber Member TRSmith's Avatar
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    Re: Stitching vertically AND horizontally?

    I must have screwed up the sequence somehow. Does it seem to make a difference if you go left to right for row #1 and then back to left for row #2 etc.?

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    Re: Stitching vertically AND horizontally?

    Have you tried Autostich? Or Autopano?

    It seems to work for both vertical and horizontal photos -- Ive used it on my iPhone and it works pretty well.

    Also, have the link to the tutorial?

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    Re: Stitching vertically AND horizontally?

    i simply opened all nine files in CS5, selected photmerge, auto, use opened files

    away it went

    a few times, i have had PS fail (large files, and a mystery or two) autopanoGiga was able to do the same files no problemo

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    Re: Stitching vertically AND horizontally?

    The pain people without an Aptus-II 12 or P65+ go through eh? :-)

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    Re: Stitching vertically AND horizontally?

    i did try and stitch a nine image horizontal 16 bit pano, from my Hd3-39. choked PS to a standstill, (too large a file size) but autogiggle had no problem.
    advantage was a better use of the aspect ratio of the lens, no wide angle effects, and a monster file, putting even the 80meg backs to shame

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    Re: Stitching vertically AND horizontally?

    Ahhhh but just imagine doing the very same thing with an 80mp back...

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    Re: Stitching vertically AND horizontally?

    i would need a forklift to carry all the megapixels

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    Re: Stitching vertically AND horizontally?

    Tim, try forcing the spherical projection and see if that helps.
    Jack
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    Senior Subscriber Member Steen's Avatar
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    Re: Stitching vertically AND horizontally?

    Quote Originally Posted by TRSmith View Post
    I must have screwed up the sequence somehow. Does it seem to make a difference if you go left to right for row #1 and then back to left for row #2 etc.?

    Tim, That's the sequence I always use for panorama captures.
    I have just reinstalled PTGui with my old registration key and given it a try and I can confirm that PTGui could easily detect when to go to the next row when making the alignment puzzle.

    I think the trick is to decide some appropriate fixed points in the scenery and memorize them carefully and then use them repeatedly for the sufficient overlap both horizontally AND vertically as well.
    I have tried to illustrate it, not all that easy but I'm sure you get the point.
    The red dots on yellow are the fixed points in the scenery to be memorized and to be reused (re-shot) in the next column and again in the next row as well, while shooting.




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    Re: Stitching vertically AND horizontally?


    I made a 5 columns x 2 rows = ten frames all together panorama to test your sequence in PTGui.

    It ended up as a frame with:
    10,322 x 6,763 pixels
    69,8 Mp all together




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    Senior Subscriber Member Steen's Avatar
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    Re: Stitching vertically AND horizontally?


    Here's a small websized version of the 5 x 2 panorama, linked to the full size ~ 70 Mp file (11 Mb).


    click for larger (warning: 11 Mb)


    Nikon D300 Nikkor AF-S 1.4/85mm G 1/500 sec. at f/8 ISO 200 Capture NX PTGui

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    Re: Stitching vertically AND horizontally?

    Steen! Thank you my friend. Very nice explanation. I will study it and try it tomorrow. I'll post my test results here. Thanks!

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    Senior Subscriber Member Steen's Avatar
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    Re: Stitching vertically AND horizontally?

    I need to add that I actually dare not recommend PTGui.
    It is very easy to use, but with larger panoramas in maximum quality it generates large JPG files that cannot be recognized or opened by most of my image converters or editors.

    I had a lot of trouble with this one.
    It is a 9 columns x 3 rows = 27 frames panorama in maximum quality resulting in a 130 Mb JPG file.
    Most of my image editors could not open the file, some of them even could not recognize the file as a true JPG file.
    But finally I succeeded to compress the file to a 36 Mb file.

    19512 x 7899 pixels = 154 Mp



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    Senior Subscriber Member Steen's Avatar
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    Re: Stitching vertically AND horizontally?

    I have uploaded it to zoom.it where you can zoom into uploaded image files with the scroll wheel or the zoom buttons, just click the below picture.
    At the bottom to the right on the page there is a Toggle Full Page button.
    (And for those who use a pc with Internet Explorer, F11 wil let you browse in a full screen without menu bars, while a new click on F11 will bring the menu bars back again).
    Unfortunately you can zoom further than 100 % into the file, which makes the image quality look worse than it actually is.


    click for zoomable file


    Nikon D300 Nikkor AF-S 1.4/85mm G 1/800 sec. at f/8 ISO 200 Capture NX

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