Simple script to create equirectangular panorama by stitching images from Samsung Gear 360
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ultramango Merge pull request #54 from xiota/patch-1
Find real script directory when run from symlink.
Latest commit f411bc9 Jul 9, 2018

README.md

About

Simple script to create equirectangular panoramic photos or videos from Samsung Gear 360. It supports generation 1 (SM-C200) and 2 (2017 or SM-R210).

Samsung Gear 360

Latest Changes

Latest Changes:

  • 2018-06-14: fixed problem with EXIF data for generation 2 Gear360 that prevented Google from recognising stitched image as panorama.
  • 2018-06-04: added check for Hugin for video script.
  • 2018-04-23: small fixes, updated Windows video stitching - should match Linux version now (may have bugs still), added tests for Windows scripts.
  • 2018-02-18: splitted scripts into Windows and Linux part (.cmd, .sh), updated Pannellum library, fixed problem with xargs. Added support for 4096 (gen2?) videos. Fixed problem with bad output video length. Note: Windows version not tested.
  • 2017-10-04: added -p option for parallel video stitching (contribution by kwahoo2). On some machines it should greatly reduce video stitching time (ex. 33 s vs ~13 s). Use with care, might freeze your machine. Added -r option for panorama processing, it will remove source file (this used by video processing to save on disk space).
  • 2017-10-01: higher quality video output by default (override with --speed option), ability to set temporary directory for video, added 2k video support (contribution by durkie), few fixes, added tests for panorama and video (can be used as primitive performance measurement). Important: Linux changes only, Windows should, hopefully, follow later.
  • 2017-07-11: fixed video script to work with new panorama script, fix when run outside script directory (video script still might have problems), GPU used by default, ability to set temporary directory (not for videos yet), video stitching uses multiblend by default (no option to disable yet).
  • 2017-07-09: processed files (in output directory) are skipped, multiblend support, use GPU when possible by default, updated help.
  • 2017-06-11: added preliminary support for generation 2 of Gear360 (SM-R210), thanks sfrique for providing files.
  • 2017-06-10: support for wildcards, switched gallery to Pannellum, "automatic" gallery creation, no longer possible to set output filename (this is due to acceptance of wildcards/multiple files). Lots of changes so expect things not to work well (I did basic testing).
  • 2017-05-16: small update, added poorman's gallery in html.
  • 2017-03-17: added compatibility with Google Photos (contribution by Ry0 and ftoledo).
  • 2017-02-04: added tutorial how to manually create initial panorama in Hugin, updated template, now it resembles panorama created by Samsung S7 phone (it is horizontally rotated by 180 deg.).
  • 2017-01-25: added EXIF data to output file, Windows has now command timing, cosmetic changes to the file.
  • 2017-01-18: improved Hugin template(s), should not be so distorted; new template for video, should speed up video by factor of two (about), fix video size for Linux in script (was 1940, should be 1920).
  • 2016-11-07: added sound to final video (contribution by OWKenobi), some small fixes.
  • 2016-10-23: experimental (read: slow and not tested well) support for video stiching.
  • 2016-09-29: removed bash dependency on Windows, one script for Linux & Windows, script can be run outside its original/installation directory.
  • 2016-07-31: removed dependency on ImageMagick, optional second parameter as output filename.

Usage

Requirements

Requirements:

  • Linux, Windows, should work on Mac.
  • Hugin.
  • ffmpeg (optional, needed for video stitching).
  • multiblend (optional, needed for video stitching).
  • GNU Parallel (optional, needed for video stitching if using -p option).

Installation

Linux

Use your distributions' package manager to install Hugin. Example for Ubuntu:

apt-get install hugin

Do the same for ffmpeg if you want video stitching, it is usually installed by default on many Linux distributions.

multiblend is a bit more tricky. In most cases you will have to manually compile it and install. After unpacking read build.txt... or do this:

unzip multiblendX.Y.Z.zip
cd multiblend
g++ -msse2 -O3 -ltiff -ltiffxx -ljpeg -lpng multiblend.cpp -o multiblend
# If that fails try this instead (older g++):
# g++ -msse2 -O3 multiblend.cpp -o multiblend -ltiff -ltiffxx -ljpeg -lpng
sudo cp multiblend /usr/local/bin

Package exists for Arch Linux.

GNU Parallel is needed if using -p option (greatly speeds-up processing). It is a standard package that can be installed using your package manager, example:

apt-get install parallel

Finally: clone or download zip of this project then unpack it somewhere.

One liner to install it in current directory under gear360pano (no .git dir):

mkdir -p gear360pano && wget -qO- https://github.com/ultramango/gear360pano/archive/master.zip | bsdtar -xvf- -C gear360pano -s'|[^/]*/||' > /dev/null 2>&1 && find gear360pano -iname "*.sh" -exec chmod a+x {} \; && echo '\nDone'

Windows

Install Hugin in the default location (it's hardcoded in script), both 32 and 64-bit versions will work.

For video stitching install/unzip ffmpeg in c:\program files\ffmpeg (there should be a subdirectory bin there with ffmpeg.exe binary).

For multiblend support you need to unpack it into Hugin bin directory: c:\program files\hugin\bin.

Clone or download zip of this project then unpack it somewhere.

Usage

Photos

Open console or command line (Win key + R then cmd.exe), go to directory where you cloned/unpacked this project.

Usage (example for Linux, for Windows use gear360pano.cmd):

gear360pano.sh *.JPG

# For Linux and GNU Parallel
ls -1 path/to/files/*.JPG | parallel --load 99% --noswap --memfree 500M --bar ./gear360pano.sh {}

Output (example for Linux, for Windows use gear360pano.cmd):

$./gear360pano.sh 360_0010.JPG
Processing file: 360_0010.JPG
Processing input images (nona)
nona: using graphics card: NVIDIA Corporation GeForce GTX 1080/PCIe/SSE2
Stitching input images
enblend: warning: option "--gpu" has no effect in this enblend binary,
enblend: warning: because enblend was compiled without support for OpenCL
enblend: info: loading next image: /tmp/tmp.b7JjFwkWAV/out0000.tif 1/1
enblend: info: loading next image: /tmp/tmp.b7JjFwkWAV/out0001.tif 1/1
enblend: info: writing final output
enblend: warning: must fall back to export image without alpha channel
Setting EXIF data (exiftool)
Processing took: 10 s
Processed files are in /somedir/gear360pano/html/data

This will produce a panorama files in html\data directory (default), this can be changed with -o (Linux) or /o (Windows) paramter.

List of switches (Windows in brackets):

  • -a (/a) - enforce processing of all files (default: skip already processed)
  • -g (/g) - update gallery files list (default: do not update gallery files list)
  • -m (/m) - use multiblend instead of Hugin's enblend (faster but lower quality)
  • -n (/n) - do not use GPU (slower but safer)
  • -o (/o) directory - set output directory (default: html/data)
  • -q (/q) quality - set JPEG quality (default: 97)
  • -r - remove source file after processing (use with care)
  • -t (/t) directory - set temporary directory (default: systems' default)
  • -h (/h) - display help

Script has some simple error checking routines but don't expect it will handle all bad situations.

Few remarks (does not apply for the videos):

  • script currently supports only the highest resolution from the camera (7776x3888),
  • ensure that you have something like 150 MB of free disk space for intermediate files. If you're tight on disk space, switch to png format (change inside the script), but the processing time increases about four times,
  • on Intel i7, 16 GB memory, NVIDIA 1080 it takes ~10 seconds to produce the panorama (using enblend),
  • for better results stitch panorama manually: create new project in Hugin, add two times the same (raw) panorama file, then choose from menu "File" and "Apply Template", add points and optimise,
  • script might contain bugs, most possibly running script from weird directories (symbolic links, spaces in paths) or giving image from just as weird directory location,
  • script might not support some exotic interpreters or not work on some older Windows versions. On Linux it works with bash,
  • you might need to escape asterisk, otherwise script might/will hang,
  • script has (should have) Unix line endings (this might cause problems with labels under Windows, so far - not).

Videos

For videos (example for Linux):

./gear360video.sh video.mp4

This should produce video_pano.mp4 in html/data directory (default), output file can be given as a second argument (but not full path, see -o parameter).

List of switches (Linux):

  • -o directory - place stitched video in directory
  • -p - use GNU Parallel to process frames in parallel (speeds things up)
  • -s - optimise stitching for speed (quality will suffer)
  • -t directory - place temporary files in directory
  • -h - display help

What is/might be wrong (loose notes about the script):

  • to speed-up stitching multiblend is used, it means you have to install it,
  • video stitching works by converting it to image files, stitching them and then re-coding, it might require a lot of disk space (gigabytes or even more) as the long videos will result in many image files,
  • -p option might be pretty resource hungry, your machine might slow down or freeze, use with care,
  • timelapse videos are not (yet?) supported under Windows (problems with sound).

Tutorial

This video shows how to create an initial (no proper stitching) panorama file from one double fisheye photos:

Panorama from double fisheye photo

Links

Links:

TODOs

Few TODOs:

  • support more image sizes, not only 7k,
  • use GNU Parallel if more than one panorama is being stitched,
  • there's no vignetting correction, better lens correction could be created.