Does the wrapper support the feature fractal markers

[AndreV84]

it is rather a question or feature request than an issue.
Thank you for understanding.

[fehlfarbe]

I updated the Python wrapper to aruco 3.1.2 which supports fractal markers. Can you try the branch 3.1.2? It's not uploaded to pip yet.

[AndreV84]

Setting it up! Thank you for pointing out!

…

On Fri, May 24, 2019 at 1:35 PM fehlfarbe ***@***.***> wrote: I updated the Python wrapper to aruco 3.1.2 which supports fractal markers. Can you try the branch 3.1.2 <https://github.com/fehlfarbe/python-aruco/tree/aruco-3.1.2>? It's not uploaded to pip yet. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#33?email_source=notifications&email_token=AD45YWNY32POHDOE2NQHHZ3PW7VIXA5CNFSM4HPMHNB2YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGODWFLUOQ#issuecomment-495630906>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AD45YWKLNHUIVHNM776EGKTPW7VIXANCNFSM4HPMHNBQ> .

[AndreV84]

I am trying to install it but getting errors

sudo apt-get install swig3.0
Reading package lists... Done
Building dependency tree       
Reading state information... Done
swig3.0 is already the newest version (3.0.12-1).
The following package was automatically installed and is no longer required:
  libsdl-ttf2.0-0
Use 'sudo apt autoremove' to remove it.
0 upgraded, 0 newly installed, 0 to remove and 11 not upgraded.

Traceback (most recent call last): File "setup.py", line 13, in <module> shutil.copy("./py3/aruco.py", ".") File "/home/nvidia/venv/lib/python3.6/shutil.py", line 241, in copy copyfile(src, dst, follow_symlinks=follow_symlinks) File "/home/nvidia/venv/lib/python3.6/shutil.py", line 120, in copyfile with open(src, 'rb') as fsrc: FileNotFoundError: [Errno 2] No such file or directory: './py3/aruco.py'

[fehlfarbe]

Did you run ./swigbuild.sh? That creates the missing directories and files

[AndreV84]

got through with:
apt install libeigen3-dev

[AndreV84]

python3 ./fractal.py
Traceback (most recent call last):
File "./fractal.py", line 5, in
import aruco
ModuleNotFoundError: No module named 'aruco'

[fehlfarbe]

did you run sudo python3 setup.py install after swigbuild?

[AndreV84]

python
Python 3.6.7 (default, Oct 22 2018, 11:32:17)
[GCC 8.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.

import cv2
import cv2.aruco
import aruco
Traceback (most recent call last):
File "", line 1, in
ModuleNotFoundError: No module named 'aruco'

does swigbuild need swig or swig3.0 in case of python 3?

[AndreV84]

it seems that it installed aruco to system wide python instead of the one that I am using in the virtualenv
(venv) nvidia@nvidia:~/python-aruco-aruco-3.1.2$ sudo python3 setup.py install
running install

[AndreV84]

after I installed it system wide it fails with:
python3 fractal.py
Traceback (most recent call last):
File "fractal.py", line 5, in
import cv2.aruco
ModuleNotFoundError: No module named 'cv2.aruco'

[AndreV84]

with python2 it fails with:
python fractal.py
Traceback (most recent call last):
File "fractal.py", line 10, in
detector = cv2.aruco.FractalDetector()
AttributeError: 'module' object has no attribute 'FractalDetector'

[AndreV84]

probably the opencv-contrib doesn't have the fractal detector?

[fehlfarbe]

You don't have to import cv2.aruco just use import aruco and detector = aruco.FractalDetector() and so on

[AndreV84]

trying again:
Ubuntu 18.04 with opencv 4.0.1, aruco 3.6.1 Python 3.6.7

git clone --single-branch --branch aruco-3.1.2 https://github.com/fehlfarbe/python-aruco.git

~/opencv-4.1.0/python-aruco/example$ python3 fractal.py
Traceback (most recent call last):
File "/usr/local/lib/python3.6/dist-packages/aruco-3.1.2.0-py3.6-linux-x86_64.egg/aruco.py", line 14, in swig_import_helper
return importlib.import_module(mname)
File "/usr/lib/python3.6/importlib/init.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 994, in _gcd_import
File "", line 971, in _find_and_load
File "", line 955, in _find_and_load_unlocked
File "", line 658, in _load_unlocked
File "", line 571, in module_from_spec
File "", line 922, in create_module
File "", line 219, in _call_with_frames_removed
ImportError: /usr/local/lib/python3.6/dist-packages/aruco-3.1.2.0-py3.6-linux-x86_64.egg/_aruco.cpython-36m-x86_64-linux-gnu.so: undefined symbol: ZN2cv8internal18WriteStructContextC1ERNS_11FileStorageERKNS_6StringEiS6

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "fractal.py", line 5, in
import aruco
File "/usr/local/lib/python3.6/dist-packages/aruco-3.1.2.0-py3.6-linux-x86_64.egg/aruco.py", line 17, in
_aruco = swig_import_helper()
File "/usr/local/lib/python3.6/dist-packages/aruco-3.1.2.0-py3.6-linux-x86_64.egg/aruco.py", line 16, in swig_import_helper
return importlib.import_module('_aruco')
File "/usr/lib/python3.6/importlib/init.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
ImportError: /usr/local/lib/python3.6/dist-packages/aruco-3.1.2.0-py3.6-linux-x86_64.egg/_aruco.cpython-36m-x86_64-linux-gnu.so: undefined symbol: ZN2cv8internal18WriteStructContextC1ERNS_11FileStorageERKNS_6StringEiS6
Segmentation fault (core dumped)

[AndreV84]

python
Python 2.7.15rc1 (default, Nov 12 2018, 14:31:15)
[GCC 7.3.0] on linux2
Type "help", "copyright", "credits" or "license" for more information.

import cv2
import aruco
Traceback (most recent call last):
File "", line 1, in
File "/usr/local/lib/python2.7/dist-packages/aruco-3.1.2.0-py2.7-linux-x86_64.egg/aruco.py", line 17, in
_aruco = swig_import_helper()
File "/usr/local/lib/python2.7/dist-packages/aruco-3.1.2.0-py2.7-linux-x86_64.egg/aruco.py", line 16, in swig_import_helper
return importlib.import_module('_aruco')
File "/usr/lib/python2.7/importlib/init.py", line 37, in import_module
import(name)
ImportError: /usr/local/lib/python2.7/dist-packages/aruco-3.1.2.0-py2.7-linux-x86_64.egg/_aruco.so: undefined symbol: ZN2cv8internal18WriteStructContextC1ERNS_11FileStorageERKNS_6StringEiS6