This repository follows Bildverarbeitung FS2023 for Geomatik bachelor students at ETH Zurich. Lectures and recordings can be found in Moodle.

If you have any questions, please let us know:

• Binbin Xiang {[email protected]}
• Shengyu Huang {[email protected]}
• Rodrigo Caye Daudt {[email protected]}

This code has been test on

• Python 3.7 and Python 3.8, MacOS and Linux

As the first step, please git clone this repository to your local machine by running:

git clone https://github.com/prs-eth/Bildverarbeitung.git

Then, please run the following commands to create virtual environment and install dependencies:

virtualenv vildverarbeitung
source vildverarbeitung/bin/activate
pip install numpy PyQt5 opencv_python scikit-image

Next, please install QT Designer

• For windows and Linux user, you can install by running:

pip install PyQt5_tools

• For MacOS user, please choose 5.12.x Offline Installers and install from here

Now you can open the GUI by running:

python main.py

and you will see sth like:

• If you run into errors like

  QObject::moveToThread: Current thread (0x2ab1aa0) is not the object's thread (0x312d4d0).
  Cannot move to target thread (0x2ab1aa0)
  
  qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "/scratch2/shengyu/predator/lib/python3.8/site-packages/cv2/qt/plugins" even though it was found.
  This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
  
  Available platform plugins are: xcb, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, webgl.
  
  Aborted
  

  Please uninstall opencv_python and instead opencv_python_headless instead:

  pip uninstall opencv_python
  pip install opencv-python-headless
  

  If this also doesn't work for you, please try:

  pip uninstall opencv_python
  pip install opencv-contrib-python
  

• If you have problems with installing libs. on MacOS system, please first check if you can successfully install scipy, if not, you might have to install gcc first by running:

  brew install gcc
  

• If you are a Mac user and have problems with install PyQt5 via pip install, please consider using conda install instead, you can still use pip install under an anaconda environment by first running:

conda install pip

This GUI is built on QT, to make any modifications, please first open qt designer/creator:

• For linux and windows user, please run:

pyqt5-tools designer

• For MacOS user, please just open QT Creator after installation.

Then please open assets/gui.ui and make modifications.

Afterwards, you can first save the modifications and run

pyuic5 -o libs/gui.py assets/gui.ui

to update associated python files. You will see the new GUI by running

python main.py