imshow failing on raspberry pi 64 bit OS (linux-aarch64)
johnholman opened this issue · 16 comments
Solution to issue cannot be found in the documentation.
- I checked the documentation.
Issue
Trying to use opencv on 8GB raspberry pi 4 running PIOS 64 bit (Debian bullseye). Installed using mamba-forge as
mamba create -n opencv
mamba activate opencv
mamba install qt opencv
Running simple test script that reads an image file and then attempts to display it with imshow():
import cv2 as cv
img = cv.imread(cv.samples.findFile("jurassic_park.png"))
print(f'image size {img.shape}')
cv.imshow("Display window", img)
k = cv.waitKey(0)Result:
File "/home/pi/src/opencv/imshow.py", line 8, in <module>
cv.imshow("Display window", img)
cv2.error: OpenCV(4.5.5) /home/conda/feedstock_root/build_artifacts/libopencv_1647515468288/work/modules/highgui/src/window.cpp:1268: error: (-2:Unspecified error) The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Cocoa support. If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script in function 'cvShowImage'
I hoped this would work as #301 suggests that qt support has been merged but perhaps I misunderstand. I did notice that qt was not installed as a dependency hence the explicit installation.
NOTE (added next day) Still simpler test which doesn't require a test image is
import cv2
cv2.waitKey(0)
which produces similar error:
cv2.error: OpenCV(4.5.5) /home/conda/feedstock_root/build_artifacts/libopencv_1647515468288/work/modules/highgui/src/window.cpp:1334: error: (-2:Unspecified error) The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Cocoa support. If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script in function 'cvWaitKey'
Installed packages
# packages in environment at /home/pi/mambaforge/envs/opencv:
#
# Name Version Build Channel
_openmp_mutex 4.5 1_gnu conda-forge
alsa-lib 1.2.3 h516909a_0 conda-forge
bzip2 1.0.8 hf897c2e_4 conda-forge
c-ares 1.18.1 hf897c2e_0 conda-forge
ca-certificates 2021.10.8 h4fd8a4c_0 conda-forge
cairo 1.16.0 h007064d_1010 conda-forge
dbus 1.13.6 h12b9eeb_3 conda-forge
expat 2.4.7 ha18d298_0 conda-forge
ffmpeg 4.3.2 hf67a8e1_3 conda-forge
font-ttf-dejavu-sans-mono 2.37 hab24e00_0 conda-forge
font-ttf-inconsolata 3.000 h77eed37_0 conda-forge
font-ttf-source-code-pro 2.038 h77eed37_0 conda-forge
font-ttf-ubuntu 0.83 hab24e00_0 conda-forge
fontconfig 2.13.96 h856ede2_2 conda-forge
fonts-conda-ecosystem 1 0 conda-forge
fonts-conda-forge 1 0 conda-forge
freeglut 3.2.2 h01db608_1 conda-forge
freetype 2.10.4 hdf53a3c_1 conda-forge
gettext 0.19.8.1 h6edf1e2_1008 conda-forge
gmp 6.2.1 h7fd3ca4_0 conda-forge
gnutls 3.6.13 h5fb5790_1 conda-forge
graphite2 1.3.13 h7fd3ca4_1001 conda-forge
gst-plugins-base 1.18.5 h227fc8a_3 conda-forge
gstreamer 1.18.5 h01406a2_3 conda-forge
harfbuzz 4.0.1 hefe178f_0 conda-forge
hdf5 1.12.1 nompi_h7bde11e_104 conda-forge
icu 69.1 h3621d8e_0 conda-forge
jasper 2.0.33 h5ced176_0 conda-forge
jbig 2.1 hf897c2e_2003 conda-forge
jpeg 9e h3557bc0_0 conda-forge
keyutils 1.6.1 h4e544f5_0 conda-forge
krb5 1.19.3 h7c456eb_0 conda-forge
lame 3.100 hf897c2e_1001 conda-forge
ld_impl_linux-aarch64 2.36.1 h02ad14f_2 conda-forge
lerc 3.0 h01db608_0 conda-forge
libblas 3.9.0 13_linuxaarch64_openblas conda-forge
libcblas 3.9.0 13_linuxaarch64_openblas conda-forge
libclang 13.0.1 default_hf9dac01_0 conda-forge
libcurl 7.82.0 h8fd98b7_0 conda-forge
libdeflate 1.10 hf897c2e_0 conda-forge
libedit 3.1.20191231 he28a2e2_2 conda-forge
libev 4.33 h516909a_1 conda-forge
libevent 2.1.10 h6aed413_4 conda-forge
libffi 3.4.2 h3557bc0_5 conda-forge
libgcc-ng 11.2.0 hf1cc4e7_14 conda-forge
libgfortran-ng 11.2.0 he9431aa_14 conda-forge
libgfortran5 11.2.0 h440fb59_14 conda-forge
libglib 2.70.2 hde3fb6c_4 conda-forge
libglu 9.0.0 he1b5a44_1001 conda-forge
libgomp 11.2.0 hf1cc4e7_14 conda-forge
libiconv 1.16 h6dd45c4_0 conda-forge
liblapack 3.9.0 13_linuxaarch64_openblas conda-forge
liblapacke 3.9.0 13_linuxaarch64_openblas conda-forge
libllvm13 13.0.1 hb2805f8_2 conda-forge
libnghttp2 1.47.0 h75cb1c7_0 conda-forge
libnsl 2.0.0 hf897c2e_0 conda-forge
libogg 1.3.4 h3557bc0_1 conda-forge
libopenblas 0.3.18 pthreads_h775ce2d_0 conda-forge
libopencv 4.5.5 py31h802d7a1_5 conda-forge
libopus 1.3.1 hf897c2e_1 conda-forge
libpng 1.6.37 hbd635b3_2 conda-forge
libpq 14.2 h29fb33b_0 conda-forge
libprotobuf 3.19.4 h469bdbd_0 conda-forge
libssh2 1.10.0 h1ab2c7b_2 conda-forge
libstdcxx-ng 11.2.0 h0d0a5bb_14 conda-forge
libtiff 4.3.0 hdea21e4_3 conda-forge
libuuid 2.32.1 hf897c2e_1000 conda-forge
libvorbis 1.3.7 h01db608_0 conda-forge
libwebp-base 1.2.2 hf897c2e_1 conda-forge
libxcb 1.13 h3557bc0_1004 conda-forge
libxkbcommon 1.0.3 he09c752_0 conda-forge
libxml2 2.9.12 h1e2ce75_1 conda-forge
libzlib 1.2.11 hb9de7d4_1013 conda-forge
lz4-c 1.9.3 h01db608_1 conda-forge
mysql-common 8.0.28 h8af1aa0_0 conda-forge
mysql-libs 8.0.28 ha3f2873_0 conda-forge
ncurses 6.3 h01db608_0 conda-forge
nettle 3.6 ha0d5d3d_0 conda-forge
nspr 4.32 h01db608_0 conda-forge
nss 3.74 hdd3d7a4_0 conda-forge
numpy 1.22.3 py310hd22b2ba_0 conda-forge
opencv 4.5.5 py31hbbe02a8_5 conda-forge
openh264 2.1.1 h469bdbd_0 conda-forge
openssl 1.1.1l hf897c2e_0 conda-forge
pcre 8.45 h01db608_0 conda-forge
pip 22.0.4 pyhd8ed1ab_0 conda-forge
pixman 0.40.0 hb9de7d4_0 conda-forge
pthread-stubs 0.4 hb9de7d4_1001 conda-forge
py-opencv 4.5.5 py31h7d5ade6_5 conda-forge
python 3.10.2 he7f7bba_4_cpython conda-forge
python_abi 3.10 2_cp310 conda-forge
qt 5.12.9 hb57a898_5 conda-forge
readline 8.1 h1a49cc3_0 conda-forge
setuptools 60.10.0 py310hbbe02a8_0 conda-forge
sqlite 3.37.1 hc74f5b8_0 conda-forge
tk 8.6.12 hd8af866_0 conda-forge
tzdata 2022a h191b570_0 conda-forge
wheel 0.37.1 pyhd8ed1ab_0 conda-forge
x264 1!161.3030 hf897c2e_1 conda-forge
xorg-fixesproto 5.0 h3557bc0_1002 conda-forge
xorg-inputproto 2.3.2 h3557bc0_1002 conda-forge
xorg-kbproto 1.0.7 h3557bc0_1002 conda-forge
xorg-libice 1.0.10 h3557bc0_0 conda-forge
xorg-libsm 1.2.3 h965e137_1000 conda-forge
xorg-libx11 1.7.2 h3557bc0_0 conda-forge
xorg-libxau 1.0.9 h3557bc0_0 conda-forge
xorg-libxdmcp 1.1.3 h3557bc0_0 conda-forge
xorg-libxext 1.3.4 h3557bc0_1 conda-forge
xorg-libxfixes 5.0.3 h3557bc0_1004 conda-forge
xorg-libxi 1.7.10 h3557bc0_0 conda-forge
xorg-libxrender 0.9.10 h3557bc0_1003 conda-forge
xorg-renderproto 0.11.1 h3557bc0_1002 conda-forge
xorg-xextproto 7.3.0 h3557bc0_1002 conda-forge
xorg-xproto 7.0.31 h3557bc0_1007 conda-forge
xz 5.2.5 h6dd45c4_1 conda-forge
zlib 1.2.11 hb9de7d4_1013 conda-forge
zstd 1.5.2 h41fb7a4_0 conda-forgeEnvironment info
(opencv) pi@raspberrypi:~/src/opencv $ conda info
active environment : opencv
active env location : /home/pi/mambaforge/envs/opencv
shell level : 2
user config file : /home/pi/.condarc
populated config files : /home/pi/mambaforge/.condarc
conda version : 4.11.0
conda-build version : not installed
python version : 3.9.10.final.0
virtual packages : __linux=5.10.103=0
__glibc=2.31=0
__unix=0=0
__archspec=1=aarch64
base environment : /home/pi/mambaforge (writable)
conda av data dir : /home/pi/mambaforge/etc/conda
conda av metadata url : None
channel URLs : https://conda.anaconda.org/conda-forge/linux-aarch64
https://conda.anaconda.org/conda-forge/noarch
package cache : /home/pi/mambaforge/pkgs
/home/pi/.conda/pkgs
envs directories : /home/pi/mambaforge/envs
/home/pi/.conda/envs
platform : linux-aarch64
user-agent : conda/4.11.0 requests/2.27.1 CPython/3.9.10 Linux/5.10.103-v8+ debian/11 glibc/2.31
UID:GID : 1000:1000
netrc file : None
offline mode : FalseI'm not even sure that cv.samples.findFile("jurassic_park.png") works. It doesn't on linux. We don't ship the examples.
It does if you put the image file in the same directory as the script though. For example it works on windows and on the pi (linux-aarch64) if you install opencv-python with pip rather than the conda-forge package.
But apologise for the unnecessary findFile() etc! Simplified version below produces the same error:
import cv2 as cv
img = cv.imread("jurassic_park.png")
print(f'image size {img.shape}')
cv.imshow("Display window", img)
k = cv.waitKey(0)
I'm sorry to ask. Can you provide the correctly named image. This is just to make it easier for others to help you
Do you have the equivalent of these packages installed
https://github.com/conda-forge/opencv-feedstock/blob/main/recipe/yum_requirements.txt
On the image - don't know what copyright situation is for the jurassic one but any image will do - I'll look for something and attach in a moment.
On the mesa-libGL requirement - if that is a conda package I don't think I have it installed.
I just tried running "mamba install mesa-libgl" and it said nothing provides it. Can you advise on the right incantation - I can see lots of different related packages with "mamba search mesa-libgl"
Revised example with image attached:
import cv2 as cv
img = cv.imread("bosch_shredder.jpg")
print(f'image size {img.shape}')
cv.imshow("Display window", img)
k = cv.waitKey(0)
It should be a package you install with apt or yum.
It provides OpenGL by the operating system
apt list mesa --installed shows
libegl-mesa0/stable,now 20.3.5-1+rpt3+rpi1 arm64 [installed,automatic]
libgl1-mesa-dri/stable,now 20.3.5-1+rpt3+rpi1 arm64 [installed]
libglapi-mesa/stable,now 20.3.5-1+rpt3+rpi1 arm64 [installed,automatic]
libgles2-mesa/stable,now 20.3.5-1+rpt3+rpi1 arm64 [installed]
libglx-mesa0/stable,now 20.3.5-1+rpt3+rpi1 arm64 [installed,automatic]
mesa-va-drivers/stable,now 20.3.5-1+rpt3+rpi1 arm64 [installed,automatic]
mesa-vdpau-drivers/stable,now 20.3.5-1+rpt3+rpi1 arm64 [installed,automatic]
Does that look sufficient? (Maybe this is is a raspberry pi specific thing?)
I think qt5 is working on this platform. After also installing pyqt a simple qt application works:
from PyQt5.QtWidgets import QApplication, QWidget
import sys
app = QApplication(sys.argv)
window = QWidget()
window.show()
app.exec()
I can also use imshow() from matplotlib using the qt backend:
import cv2 as cv
import matplotlib.pyplot as plt
import matplotlib as mpl
img = cv.imread("bosch_shredder.jpg")
img = cv.cvtColor(img, cv.COLOR_BGR2RGB)
mpl.use('QtAgg')
plt.imshow(img)
plt.show()
but calling imshow() from opencv still fails.
NOTE (added to first comment as well)
Even simpler test which doesn't require a test image:
import cv2
cv2.waitKey(0)
which produces similar error:
cv2.error: OpenCV(4.5.5) /home/conda/feedstock_root/build_artifacts/libopencv_1647515468288/work/modules/highgui/src/window.cpp:1334: error: (-2:Unspecified error) The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Cocoa support. If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script in function 'cvWaitKey'
Looks like WITH_QT is being set to 0 on these builds: https://dev.azure.com/conda-forge/feedstock-builds/_build/results?buildId=476367&view=logs&j=696704cc-6fef-57a3-ea36-f27779b8cd5e&t=ed2e6513-0a06-519f-13f9-1e5619642f2a&l=2318
Could be due to target_platform "linux-aarch64" failing this check https://github.com/conda-forge/opencv-feedstock/blob/main/recipe/build.sh#L26 and getting disabled.
Try installing in an hour or two.
Thank you for helping debug so much!
Thanks both - my bad for missing to change the build.sh as well!