This is a simple project which, using some photogrammetry, implements the back projection of world-space coordinates into the 2d pixel coordinates of an image.
The code is hosted also at https://github.com/Joeppie/Backproject
To get a feel of what the program can do, you can follow these steps:
- Run the program
- Type in 1 [enter]
- enter images.csv as filename [enter]
- Type in 2 [enter]
- Type in 4 [enter]
- [enter] again
The above will; load in a csv with metadata for images, then load in a coordinate. The backprojected coordinates wil then be shown.
You can use the git clone --recursive command to check out the project to a local folder;
git clone --recursive https://github.com/Joeppie/Backproject.git
To build, run cmake on the source folder.
The code should compile on Linux, or minGW, it requires pthread and cmake.
Under windows, the code can be compiled under minGW, it has been tested using msys2.
The following packages are are required to be installed to build 64 bit:
pacman -S mingw-w64-x86_64-gcc
pacman -S mingw-w64-x86_64-gcc-libs
pacman -S mingw-w64-x86_64-gcc-libgfortran
pacman -S mingw-w64-x86_64-gdb
pacman -S mingw-w64-x86_64-make
pacman -S mingw-w64-x86_64-libwinpthread-git
pacman -S mingw-w64-x86_64-winpthreads-git
pacman -S mingw-w64-x86_64-cmake
pacman -S mingw64/mingw-w64-x86_64-gtest
Note: google test is also required; the package has been added.
git clone the repo, then use cmake to build the solution;
The following steps have been tested under linux Mint terminal:
git clone --recursive https://github.com/Joeppie/Backproject.git
cd Backproject/
cmake .
make
the executable will be Backproject and can be run using ./Backproject
You may first need to install and googletest pthread via the package manager of your distribution.
Up-to-date full documentation is available.
Class Diagram:
(diagram created using draw.io)
The actual backprojection takes place inside the Image class, which uses parameters from the Image, ExteriorOrientation and InteriorOrientation. The main UI of the application is powered by the 'context' which displays all known ContextOperations in a menu through the 'Enter method'
Through the Context, the ContextOperations can add and remove images, points, and run the backprojection, as per user input;
We use a CSV reading library written by Ben Strasser; https://github.com/ben-strasser/fast-cpp-csv-parser
We use googletest as a unittest framework: https://github.com/google/googletest
This code is licensed under the MIT license so that it may be used by whomever finds it useful.
MIT License
Copyright (c) 2017 Joep Lijnen/ Phillipp Jende
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.