Repo contents:

• onnx_test.cpp: main C++ file
• CMakeLists.txt
• flake.nix and default.nix for reproducible builds
• build.sh for non-nix builds
• cat_small.jpg original input file
• cat_sr.png C++ ONNX output
• cat_sr_pytorch.png PyTorch and Python ONNX output

Build instructions

If you have Nix

nix build
# or, if you don't like flakes:
nix-build

You will find the executable in ./result/bin/onnx_test

Build normally

Dependencies:

• ONNX
• OpenCV

You can use build.sh which just contains:

# create build dir if it does not exist
[ -d build ] || mkdir build
# generate builder
cmake . -B build
# build
cmake --build build

Run instructions

<executable_name> <onnx-model> <source-img> <dest-img>

for example:

<executable_name> bsrgan-pretrained.onnx cat_small.jpg cat_sr.png