A series of Rust examples on using OpenCV. These are almost all direct ports of other Python or C++ examples on the internet.
sudo apt install libclang-dev
sudo apt install clang
sudo apt install libcanberra-gtk-moduleOf course you will need to install OpenCV
git clone https://github.com/opencv/opencv.git
cd opencv/build
cmake ../ && make installAlong with the above prerequisits you will need to set the folling env vars in order to compile your rust project
# location of your opencv cmake file ( e.g. find /usr -name "OpenCV*cmake")
PKG_CONFIG_PATH=/usr/local/lib/cmake/opencv4/OpenCVConfig.cmake
# location of opencv *.so files
LD_LIBRARY_PATH=/usr/local/lib/cargo build
This is more an example of Rusts powerful lambda capabilites used to select pixels above a given threshold in an image.
cargo run -- filter -f <image_file> -t <threshold_u8>
This example is a Rust port of the following example on learnopencv.com
cargo run -- centroid -f <image_file>
e.g. aarch64-unknown-linux-gnu
sudo apt-get install g++-aarch64-linux-gnu
To cross-compile for aarch64 you will need to edit the following: ~/.cargo/config
[target.aarch64-unknown-linux-gnu]
linker = "aarch64-linux-gnu-gcc"
rustup target list
rustup target add aarch64-unknown-linux-gnu
cargo build --target aarch64-unknown-linux-gnu
To cross-compile OpenCV for aarch64 you can do the following from the OpenCV source folder:
cmake -B build -S. \
-DCMAKE_BUILD_TYPE=RELEASE \
-DCMAKE_INSTALL_PREFIX=/usr/local \ -DOPENCV_GENERATE_PKGCONFIG=ON \
-DWITH_QT=OFF \
-DWITH_QT=ON \
-DCMAKE_TOOLCHAIN_FILE=../platforms/linux/aarch64-gnu.toolchain.cmake .. \
&& cd build \
&& make -j16 sudo dpkg --add-architecture armhf
~.cargo/config
[target.armv7-unknown-linux-gnueabihf]
linker = "arm-linux-gnueabihf-gcc"
rustup target add armv7-unknown-linux-gnueabihf
cargo build --target armv7-unknown-linux-gnueabihf
https://docs.opencv.org/4.x/d0/d76/tutorial_arm_crosscompile_with_cmake.html
https://jensd.be/1126/linux/cross-compiling-for-arm-or-aarch64-on-debian-or-ubuntu
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