[HN Gopher] Spherical Panoramas
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Spherical Panoramas
Author : app4soft
Score : 36 points
Date : 2021-08-29 18:32 UTC (4 hours ago)
(HTM) web link (stuvel.eu)
(TXT) w3m dump (stuvel.eu)
| ktpsns wrote:
| Wow, I haven't used/seen panorama stitching with Hugin for over a
| decade. I got the impression that ultra-wide angle cameras/lenses
| are quite widespread nowadays, especially with smartphones.
| Furthermore, they do "online" live-stitching while doing
| panoramas, instead of stitching them manually "offline" in the
| postprocessing. (Of course the quality of the manual stiches are
| way better)
| app4soft wrote:
| > _Furthermore, they do "online" live-stitching while doing
| panoramas_
|
| This way it may be used for even creating video "on-the-go"
| with standalone camera position (with low FPS it may be useful
| for landscape timelaps video capture or panoramic webcam) - and
| as a result it could be cheaper alternative to such things as
| Facebook's _Surround 360_ [0,1] DIY 3D-360 video capture
| system.
|
| Just as addition to software part it would require to design
| some sort of automatically rotated "panoramic tripod head"
| hardware synchronized with camera photo capture control (to
| take photos).
|
| [0] https://github.com/facebook/Surround360
|
| [1] https://engineering.fb.com/2016/07/26/video-
| engineering/surr...
| fsiefken wrote:
| It would be nice if there would be a relatively simple method to
| create stereoscopic spherical panoramas so one would feel even
| more immersed in VR
| moultano wrote:
| You can't do that due to the hairy ball theorem.
| https://web.archive.org/web/20190603140245/elevr.com/elevran...
| app4soft wrote:
| Post on Twitter.[0]
|
| [0] https://twitter.com/sastuvel/status/1431936427252662276
| app4soft wrote:
| Archived article[0] & Hugin script[1]
|
| [0]
| http://web.archive.org/web/20210829110828/https://stuvel.eu/...
|
| [1]
| http://web.archive.org/web/20210829220747/https://stuvel.eu/...
| jokoon wrote:
| I saw a website of someone who either painted or gave printable
| file of photos so that you can put them on an actual sphere. Was
| quite amazed by the result.
| folli wrote:
| I was actually looking for a way on how to generate such
| panoramas in Android using the accelerometer and magnetic sensor
| as support. Essentially what Google does with PhotoSphere.
|
| Does anyone know of any libraries or implementations of such a
| project?
| zimpenfish wrote:
| I don't know specifically about Android but Dermandar[1] have
| an SDK which claims Android compatibility (I use their iOS app
| which takes horizontal panoramas as the phone rotates.)
|
| Also have a 360 solution SDK[2].
|
| [1] http://www.dermandar.com [2] https://thevrkit.com/sdk/
| bmh wrote:
| I'm actually about to embark on exactly such a project. My plan
| is to use OpenCV's "stitching_detailed.cpp" example, and
| improve it from there. OpenCV's stitching is quite good out of
| the box, but I think I can improve it by adding knowledge from
| the phone's IMU. What do you need this for?
| app4soft wrote:
| > _My plan is to use OpenCV 's "stitching_detailed.cpp"
| example_
|
| Has you seen next project?[0]
|
| [0] https://github.com/acodexm/Panorama360
| app4soft wrote:
| > _Google does with PhotoSphere_
|
| What about _Sprayscape_?[0]
|
| https://github.com/googlecreativelab/sprayscape
| tobr wrote:
| Are spherical panoramas usually stored as a single rectangular
| bitmap? Are there any compressed image formats that account for
| the distortion and optimize for the final projected output?
| corysama wrote:
| A KTX file containing a cubemap compressed with Binomial would
| do the trick https://www.khronos.org/ktx/
| MrLeap wrote:
| equirectangular .EXR is a relatively common format I've seen in
| gamedev.
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