tflite2json2tflite

Convert tflite to JSON and make it editable in the IDE. It also converts the edited JSON back to tflite binary.

Usage sample

1. Docker run

docker run --rm -it -v `pwd`:/home/user/workdir ghcr.io/pinto0309/tflite2json2tflite:latest

2. tflite to JSON

./flatc -t \
--strict-json \
--defaults-json \
-o workdir \
./schema.fbs -- workdir/model_float32.tflite

3. JSON edit

sed -i -e 's/Placeholder/input/g' workdir/model_float32.json
sed -i -e 's/fusion\/fusion_3\/BiasAdd/output/g' workdir/model_float32.json

4. JSON to tflite

./flatc \
-o workdir \
-b ./schema.fbs workdir/model_float32.json

rm workdir/model_float32.json

5. flatbuffers (flatc)

I have made my own modifications to the official flatbuffers(flatc) to preserve the accuracy of the quantization parameters output to JSON. For more information, please see this issue. tflite to JSON to tflite quantization error #1

https://github.com/google/flatbuffers

• flatbuffers/include/flatbuffers/util.h

  • From:

    template<> inline std::string NumToString<double>(double t) {
      return FloatToString(t, 12);
    }
    template<> inline std::string NumToString<float>(float t) {
      return FloatToString(t, 6);
    }

  • To:

    template<> inline std::string NumToString<double>(double t) {
      return FloatToString(t, 12);
    }
    template<> inline std::string NumToString<float>(float t) {
      return FloatToString(t, 17);
    }

• build

  cd flatbuffers && mkdir build && cd build
  cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release ..
  make -j$(nproc)