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Gigantes > Dubai 45 gigapixels by Gerald Donovan

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About This Gigapan

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Taken by
Gerald Donovan Gerald Donovan
Explore score
167
Size
44.88 Gigapixels
Views
4090759
Date added
May 02, 2010
Date taken
Apr 23, 2010
Categories
 
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Competitions
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Description

Stitching fixed.

www.gigapan.org/gigapans/75554/


Gigapan Comments (60)

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  1. Stefan Kuzmanov

    Stefan Kuzmanov (May 06, 2010, 09:44AM )

    Great work Gerald! How long did it take to render the pano?

  2. Gerald Donovan

    Gerald Donovan (May 06, 2010, 12:07AM )

    Hi Apapane - Thanks for the suggestion - meant to add this a while ago but forgot. Power and memory comments added to the description. Regards, Gerald.

  3. Richard Palmer

    Richard Palmer (May 05, 2010, 05:20PM )

    Congrats Gerald. Thanks for raising the bar - another challenge. Big question - Power Source & image storage Did you have an external power source for the Canon 7D? What about the Epic Pro? - several batteries, or did you have an external power source for it, too? How did you store the images as they were taken? large CF card(s), or directly onto an external drive? .jpg?

  4. Eric Stollnitz

    Eric Stollnitz (May 05, 2010, 02:34PM )

    Nice work! Thanks for trying out ICE at jdughi's suggestion. As one of ICE's developers, I'd like to know more about the crash. If you'd like to help, please email us (hdview at microsoft dot com) or post to the ICE forum (community.research.microsoft.com/f orums/112.aspx Will open in
a new tab or window) with some details: was ICE stitching or exporting or publishing; how much progress did it make; did you get an error code; was it 32-bit or 64-bit ICE; what OS are you running; how much memory and temp disk space? Thanks! --Eric Microsoft Research

  5. Holger Schulze

    Holger Schulze (May 05, 2010, 07:26AM )

    Thanks for the explanation. Now I have understood it. :o)

  6. Gerald Donovan

    Gerald Donovan (May 05, 2010, 06:02AM )

    Hi hschulze - The 220 degree width was a guestimate as I had to enter it when geo-coding. Fortunately, I took a screenshot of the render preview in Autopano Giga which I've just checked back on. The FOV given by Autopano Giga is 243.3 x 46.19 degrees, which I will update in the description here now. Not sure how you're calculating a 240,000 pixel width - are you taking into account the crop factor of the sensor? The only place I can see the pixel dimensions is in the render preview (obviously I can't open this anywhere), which reports a width of 472,603 pixels. Assuming you've missed off the crop factor, and 240k for 220 degrees would be correct if it were full frame, 240k/220*243.3*1.6 would give a width of 425,000 pixels - 90% of the number reported by Autopano Giga. Presumably the projection of what is actually a 3-dimensional spherical image onto a flat plane is accountable for the additional 10%.

  7. Holger Schulze

    Holger Schulze (May 05, 2010, 05:25AM )

    The physics does not fit here. The sensor of the 7D is known. At 220 degrees HFOV possible only 240,000 pixels are horizontal. 44.88 Gigapixel mean height of 180 degrees. There are now only 45 degrees. What is wrong? Sorry for my bad english. ;:o)

  8. Zoran Efremov

    Zoran Efremov (May 04, 2010, 01:23PM )

    Among the other BIGGEST THINGS Dubai just got the biggest gigapan. This is finlly something worth to see. You did a nice job. Hope will repeat the similar at the better weather. What is dimension of the pano in pixels. After this Photoshop should think of its limitations, publishing CS5. After this thinking of what are the limitations of Autopano. :)

  9. Gerald Donovan

    Gerald Donovan (May 03, 2010, 08:01PM )

    Hi Kilgore661 - Thanks for the kind comments. I've added basic PC spec, and also geo-coded.

  10. The Gigapanographer Currently Known as "Kilgore661"

    The Gigapanographer Currently Known as "Kilgore661" (May 03, 2010, 05:31PM )

    An astonishing achievement in its own right, but you seem to have done this on your own unlike other world records that used teams of people iirc. What were the specifications of the computer you used? Also, please geocode!

  11. Gerald Donovan

    Gerald Donovan (May 03, 2010, 04:17PM )

    jdughi - I tried stitching this with ICE, but despite MS's claims for its ability to deal with practically unlimited size panoramas, it crashed.

  12. wwing49

    wwing49 (May 03, 2010, 11:25AM )

    Only because on this scale it makes a bit of difference, change your ISO increments to be 1:1 stops. Any sensors other than the EOS-1 series sensors only have native stops of 1:1. All other Canons use processing to boost up or down from the native stop. In this case, ISO 400 processed to look like 320.

  13. jdughi

    jdughi (May 03, 2010, 10:43AM )

    i'd love to see this stitched using MSR ICE and uploaded to the Photosynth site. The viewer is much smoother.

  14. Stoney Vintson

    Stoney Vintson (May 03, 2010, 10:07AM )

    The Canon 500mm f4 is an excellent lens and it works well with the 1.4x teleconverter at f11. You need to enable mirror lockup in your camera at that focal length. I completely understand the resource issue. I rented the Canon 500mm f4 for 14 days and it cost me a pretty penny. You should definitely talk to Canon to see if they would loan you a lens. The 500mm does not have vignetting issues like the 100-400mm. The 300mm is also a very nice lens.

  15. Gerald Donovan

    Gerald Donovan (May 03, 2010, 09:55AM )

    Hi Castillonis - Oh that I could afford a 300mm f/2.8! I can only work with what I have, and I just do this for fun. When I do have another go - which probably won't be until October or November (the air quality here will be terrible until then), I'll probably look to borrow a 500mm f/4.0 from Canon Middle East and do a 360 degree pano from the crows nest on a crane on top of the building - I reckon that should deliver something close to 100GP. These images were taken at f/11 1/800th at ISO 320. You're right - it is important to stress that this is a purely technical exercise, and it's also worth mentioning the huge effect the high temperatures have on image quality due to the heat haze. If only the Gigapan Pro had come out 6 months earlier! Until November then ;) ...

  16. Stoney Vintson

    Stoney Vintson (May 03, 2010, 09:40AM )

    Congratulations on capturing, stitching, and uploading this monster image. I would love to learn more about how you overcame different challenges. In the future I would use a 300mm f2.8 with a1.4x teleconverter stopped down to at least f8 to f11. The lens that you used usually exhibits significant vignetting that is difficult to rectify using the peripheral illumination on the Canon 7D. It is also good that you immediately communicate that this is not an artistic image and that the atmospheric conditions are not the best. Though if you do not perform this excercise you would not be ready when you have that golden opportunity. Great job and I would love to hear from you about your experience doing this : )

  17. Dave Belcher

    Dave Belcher (May 02, 2010, 01:08PM )

    I believe this is a new world record for pixels! The previous was those of Paris 26 Gigapixels www.paris-26-gigapixels.com/index- en.html Will open in a new tab or window

  18. Aleksandr Reznik

    Aleksandr Reznik (May 02, 2010, 12:59PM )

    may be I am wrong ... But it is a world record (2010.05.01) on gigapixels?

  19. Gordon Atwell

    Gordon Atwell (May 02, 2010, 12:09PM )

    Great shot Gerald, a really impressive view. Pity your not able to fine tune the image in KRO format :( maybe one day.

  20. Dave Belcher

    Dave Belcher (May 02, 2010, 11:35AM )

    Give some specifications on the equipment used and the stitching details. Great shot...we hope you had sufficient bandwith during the upload! Rather poor air quality by the look of it.

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