"module" object has no attribute 'TrackerKFC_create'

Autonomous Machines Jetson & Embedded Systems Jetson TX2
1

Hi guys,

I am trying to use this script in python: Object Tracking using OpenCV (C++/Python)

The problem is when I’m running I have this error occuring:

Traceback (most recent call last):
  File "./Tracking.py", line 24, in <module>
    tracker = cv2.TrackerKCF_create()
AttributeError: 'module' object has no attribute 'TrackerKCF_create'

I have python 2.7.12 and python 3.5.2 on the Jetson as well as OpenCV 3.4.0.

Some post on forums tell about a “opencv-contrib-python” package that is not included and should be added, but when I try to find it using “pip install” it tells me this:

Collecting opencv-contrib-python
  Could not find a version that satisfies the requirement opencv-contrib-python (from versions: )
No matching distribution found for opencv-contrib-python

I don’t really know what to do then…

Thank you in advance

2

Hi vincent.dufour,

You can build opencv with contrib enabled.
But, it requires 15 GB disk space for build.

If you use JetPack 3.2/3.2.1 with Python2.7, you can install the package I built.

apt-get install -y build-essential cmake libeigen3-dev libatlas-base-dev gfortran git wget libavformat-dev libavcodec-dev libswscale-dev libavresample-dev ffmpeg pkg-config unzip qtbase5-dev libgtk-3-dev libdc1394-22 libdc1394-22-dev libjpeg-dev libpng12-dev libtiff5-dev libjasper-dev libavcodec-dev libavformat-dev libswscale-dev libxine2-dev libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev libv4l-dev libtbb-dev libfaac-dev libmp3lame-dev libopencore-amrnb-dev libopencore-amrwb-dev libtheora-dev libvorbis-dev libxvidcore-dev v4l-utils liblapacke-dev libopenblas-dev checkinstall libgdal-dev libgphoto2-dev

dpkg -i opencv-3.4.1.deb

For TX2 webcam, I fixed the python code.

# Read video
    video = cv2.VideoCapture(1)

It works very well.

3

Thank you for your answer naisy,

here is what I obtain when I execute your command:

nvidia@tegra-ubuntu:~$ sudo dpkg -i opencv-3.4.1.deb
[sudo] password for nvidia: 
(Reading database ... 191693 files and directories currently installed.)
Preparing to unpack opencv-3.4.1.deb ...
Unpacking opencv (3.4.1) over (3.4.1) ...
Setting up opencv (3.4.1) ...
nvidia@tegra-ubuntu:~$

Then nothing more happen, even after reboot nothing special I still have the same error about the module object with no attribute…

I even reinstalled opencv3.4.0 following Ubuntu 16.04: How to install OpenCV - PyImageSearch and How to Install OpenCV (3.4.0) on Jetson TX2 and adding

-D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib-3.4.0/modules \

in the CMake file after having downloaded the repository

Any advice ?

UPDATE: I tried to install your full package…still the same issue…

4

Hi vincent.dufour,

Can you show this result?

import cv2
import sys
print(cv2.getBuildInformation())
print(sys.version)

If “To be built” has “tracking”, you can use tracking api.

To be built:                 aruco bgsegm bioinspired calib3d ccalib core cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev cvv datasets dnn dnn_objdetect dpm face features2d flann freetype fuzzy hdf hfs highgui img_hash imgcodecs imgproc java_bindings_generator line_descriptor ml objdetect optflow phase_unwrapping photo plot python2 python_bindings_generator reg rgbd saliency shape stereo stitching structured_light superres surface_matching text tracking ts video videoio videostab xfeatures2d ximgproc xobjdetect xphoto
5

Hi naisy,

thank you for your support I finally managed to install it correctly and make it work and yes ‘tracking’ is present in the list so it’s all good now.

Thank you

6

Hi Naisy

Got the same error:

module ‘cv2’ has no attribute ‘TrackerKCF_create’

When I run the print(cv2.GetBuildInformation) I dont see Tracker!

So the solution is to build opencv 3.2 with command:

-D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib-3.4.0/modules \

Thanks,

sojohans

7

Hi vincent.dufour,
I tried install opencv-contrib with flag “-D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib-3.4.0/modules”, but still NO “tracking” in “To be built”.
Can you tell me how did you do to solve this?

8

“Module opencv_tracking disabled because opencv_dnn dependency can’t be resolved!”

so, you need BUILD_opencv_dnn=ON (the goturn tracker depends on dnn)

add “-D BUILD_opencv_dnn=ON” when cmake

9

hello everyone I am also having issues about using builtin opencv tracker. But I didnt understand how to build opencv-contrib package. Can I build it seperately or should I pass the location of unzipped path while building opencv using -D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib-4.4.0/modules.

I am using jetpack 4.4 on jetson tx2 devkit