diff --git a/.clang-format b/.clang-format
deleted file mode 100644
index 9d1919a..0000000
--- a/.clang-format
+++ /dev/null
@@ -1,28 +0,0 @@
-BasedOnStyle: Google
-IndentWidth: 4
-UseTab: Never
-ColumnLimit: 120
-
-Language: Cpp
-Standard: Cpp17
-
-AccessModifierOffset: -4
-AlignConsecutiveMacros: true
-AllowAllArgumentsOnNextLine: false
-AllowAllConstructorInitializersOnNextLine: false
-AllowAllParametersOfDeclarationOnNextLine: false
-AllowShortFunctionsOnASingleLine: Empty
-AllowShortIfStatementsOnASingleLine: Never
-AllowShortLambdasOnASingleLine: Empty
-AllowShortLoopsOnASingleLine: false
-AlwaysBreakBeforeMultilineStrings: false
-BinPackArguments: false
-BinPackParameters: false
-CommentPragmas: '^#'
-DerivePointerAlignment: false
-FixNamespaceComments: true
-IndentCaseLabels: false
-IndentPPDirectives: AfterHash
-ForEachMacros:
-  - foreach
-  - FOREACH_CHILD
diff --git a/CMakeLists.txt b/CMakeLists.txt
deleted file mode 100644
index 9a81b01..0000000
--- a/CMakeLists.txt
+++ /dev/null
@@ -1,61 +0,0 @@
-cmake_minimum_required (VERSION 3.10)
-
-
-# Enable CMAKE_<LANG>_COMPILER_ID AppleClang
-if(POLICY CMP0025)
-    cmake_policy(SET CMP0025 NEW)
-endif()
-
-project(infer)
-
-set (CMAKE_CXX_STANDARD 17)
-set (CMAKE_CXX_EXTENSIONS OFF)
-set (CMAKE_CXX_STANDARD_REQUIRED ON)
-set (CMAKE_EXPORT_COMPILE_COMMANDS ON)
-
-option(WITH_OPENVINO "Build with OpenVINO" OFF)
-option(WITH_ONNXRUNTIME "Build with ONNXRUNTIME" OFF)
-option(WITH_TENSORRT "Build with TensorRT" ON)
-
-
-find_package(OpenCV REQUIRED)
-if(OpenCV_FOUND)
-    message(STATUS "OpenCV found")
-    message(STATUS "    directory: ${OpenCV_DIR}")
-    message(STATUS "    version  : ${OpenCV_VERSION}")
-    include_directories(${OpenCV_INCLUDE_DIRS})
-    link_directories(${OpenCV_LIB_DIRS})
-else()
-    message(FATAL_ERROR "OpenCV not found")
-endif()
-
-set(SOURCES src/empty.cpp )
-if (WITH_OPENVINO)
-    add_compile_definitions(WITH_OPENVINO)
-    find_package(OpenVINO REQUIRED COMPONENTS Runtime) # only Runtime component
-    if (OpenVINO_FOUND)
-        message(STATUS "OpenVINO found")
-        message(STATUS "    directory: ${OpenVINO_DIR}")
-        message(STATUS "    version  : ${OpenVINO_VERSION}")
-        set(ov_link_libraries openvino::runtime)
-        include_directories($ENV{INTEL_OPENVINO_DIR}/runtime/include)
-        # include_directories($ENV{OpenVINO_HOME}/runtime/include)
-
-        list(APPEND SOURCES 
-            src/backend/b_openvino.cpp
-        )
-    else()
-        message(FATAL_ERROR "OpenVINO not found")
-    endif()
-endif()
-
-
-include_directories(include)
-
-
-add_library(backend SHARED ${SOURCES})
-
-
-set(EXE_FILE infer)
-add_executable(${EXE_FILE} app/infer.cpp)
-target_link_libraries(${EXE_FILE} PRIVATE ${ov_link_libraries} ${OpenCV_LIBS} backend)
diff --git a/app/infer.cpp b/app/infer.cpp
deleted file mode 100644
index 17aab0c..0000000
--- a/app/infer.cpp
+++ /dev/null
@@ -1,37 +0,0 @@
-#include <chrono>
-#include <iostream>
-#include <iterator>
-#include <memory>
-#include <opencv2/opencv.hpp>
-#include <ratio>
-#include <sstream>
-#include <string>
-#include <vector>
-
-#include "backend.hpp"
-
-int main(int argc, char* argv[]) {
-    std::string model_path = "../resource/weights/yolov5s_openvino_model/yolov5s.xml";
-    std::string image_path = "../images/bus.jpg";
-    det_input_t input_params;
-    input_params.device = "CPU";
-    input_params.threshold.score = 0.5;
-    input_params.threshold.conf = 0.5;
-    input_params.threshold.nms = 0.5;
-    auto backend = Backend::GetBackend(BackendType::TENSORRT, input_params);
-
-    backend->LoadModel(model_path);
-
-    auto img = cv::imread(image_path);
-
-    // 统计时间
-    auto start_time = std::chrono::high_resolution_clock::now();
-    auto batch_predictions = backend->Infer(img);
-
-    auto end_time = std::chrono::high_resolution_clock::now();
-
-    std::cout << "Infer time: " << std::chrono::duration<double, std::milli>(end_time - start_time).count() << "ms"
-              << std::endl;
-
-    return 0;
-}
\ No newline at end of file
diff --git a/include/backend.hpp b/include/backend.hpp
deleted file mode 100644
index b4ccda9..0000000
--- a/include/backend.hpp
+++ /dev/null
@@ -1,38 +0,0 @@
-#ifndef __BACKEND_HPP__
-#define __BACKEND_HPP__
-#include <memory>
-
-#ifdef WITH_OPENVINO
-#include "backend/b_openvino.hpp"
-#endif
-#include "backend/interface.hpp"
-
-enum class BackendType {
-  ONNX,
-#ifdef WITH_OPENVINO
-  OPENVINO,
-#endif
-  TENSORRT,
-};
-
-class Backend {
-public:
-  Backend() = delete;
-  ~Backend() = delete;
-  static std::unique_ptr<BaseDetectionBackend>
-  GetBackend(BackendType backend_type, const det_input_t &input_params) {
-    switch (backend_type) {
-#ifdef WITH_OPENVINO
-    case BackendType::OPENVINO:
-      return std::make_unique<OpenVINOBackend>(input_params);
-      break;
-#endif
-
-    default:
-      return nullptr;
-      break;
-    }
-  }
-};
-
-#endif // __BACKEND_HPP__
\ No newline at end of file
diff --git a/include/backend/b_openvino.hpp b/include/backend/b_openvino.hpp
deleted file mode 100644
index d580b52..0000000
--- a/include/backend/b_openvino.hpp
+++ /dev/null
@@ -1,28 +0,0 @@
-#ifndef __BACKEND__B_OPENVINO_HPP__
-#define __BACKEND__B_OPENVINO_HPP__
-
-#include <memory>
-#include <opencv2/opencv.hpp>
-
-#include "backend/interface.hpp"
-#include "openvino/openvino.hpp"
-#include "utils/extend_print.hpp"
-
-class OpenVINOBackend : public BaseDetectionBackend {
-private:
-    ov::CompiledModel compiled_model;
-    // ov::InferRequest infer_request;// FIXME: is a member variable necessary?
-public:
-    OpenVINOBackend(const det_input_t& input_params);
-    ~OpenVINOBackend();
-    void LoadModel(const std::string& model_path);
-    det_output_t Infer(const cv::Mat& img);
-    std::vector<std::string> GetDevice() const;
-
-    OpenVINOBackend(const OpenVINOBackend&) = delete;
-    OpenVINOBackend(OpenVINOBackend&&) = delete;
-    OpenVINOBackend& operator=(const OpenVINOBackend&) = delete;
-    OpenVINOBackend& operator=(OpenVINOBackend&&) = delete;
-};
-
-#endif  // __BACKEND__B_OPENVINO_HPP__
diff --git a/include/backend/interface.hpp b/include/backend/interface.hpp
deleted file mode 100644
index 4a708e8..0000000
--- a/include/backend/interface.hpp
+++ /dev/null
@@ -1,49 +0,0 @@
-#ifndef __BACKEND__INTERFACE_HPP__
-#define __BACKEND__INTERFACE_HPP__
-
-#include <cstdint>
-#include <opencv2/opencv.hpp>
-#include <string>
-#include <vector>
-
-typedef struct {
-    std::string device;
-    unsigned int batch_size;
-    unsigned int height;
-    unsigned int width;
-    unsigned int channel;
-    struct {
-        float conf;
-        float score;
-        float nms;
-    } threshold;
-} detection_input_t;
-
-typedef struct {
-    cv::Rect boxes;
-    float obj_conf;
-    int class_id;
-    float class_conf;
-} detetcion_output_t;
-
-template <typename _TInput, typename _TOutput>
-class IBackend {
-protected:
-    _TInput input_params;
-
-public:
-    explicit IBackend(const _TInput& input_params) : input_params(input_params){};
-    virtual ~IBackend(){};
-    virtual void LoadModel(const std::string& model_path) = 0;
-    virtual _TOutput Infer(const cv::Mat& img) = 0;
-    virtual std::vector<std::string> GetDevice() const = 0;
-};
-
-using det_input_t = detection_input_t;
-using det_output_t = std::vector<std::vector<detetcion_output_t>>;
-class BaseDetectionBackend : public IBackend<det_input_t, det_output_t> {
-public:
-    explicit BaseDetectionBackend(const det_input_t& input_params) : IBackend(input_params){};
-};
-
-#endif  // __BACKEND_INTERFACE_HPP__
diff --git a/include/process.hpp b/include/process.hpp
deleted file mode 100644
index 910c3bb..0000000
--- a/include/process.hpp
+++ /dev/null
@@ -1,8 +0,0 @@
-#ifndef __PROCESS_HPP__
-#define __PROCESS_HPP__
-
-class Process {
-
-};
-
-#endif  // __PROCESS_HPP__
\ No newline at end of file
diff --git a/include/utils/extend_print.hpp b/include/utils/extend_print.hpp
deleted file mode 100644
index 2f5284c..0000000
--- a/include/utils/extend_print.hpp
+++ /dev/null
@@ -1,20 +0,0 @@
-#ifndef __UTILS__EXTEND_PRINT_HPP__
-#define __UTILS__EXTEND_PRINT_HPP__
-
-#include <iostream>
-#include <string>
-#include <vector>
-
-class Utils {
-public:
-    template <typename T>
-    static void print_vector(const std::vector<T>& vec, std::string split = " ") {
-        std::cout << "[";
-        for (auto i = 0; i < vec.size() - 1; i++) {
-            std::cout << vec[i] << split;
-        }
-        std::cout << vec[vec.size() - 1] << "]" << std::endl;
-    };
-};
-
-#endif  // __UTILS__EXTEND_PRINT_HPP__
\ No newline at end of file
diff --git a/src/backend/b_openvino.cpp b/src/backend/b_openvino.cpp
deleted file mode 100644
index d9377d4..0000000
--- a/src/backend/b_openvino.cpp
+++ /dev/null
@@ -1,138 +0,0 @@
-#include "backend/b_openvino.hpp"
-
-#include <cassert>
-#include <cstdint>
-#include <iostream>
-#include <memory>
-#include <string>
-#include <vector>
-
-#include "backend/interface.hpp"
-#include "opencv2/core/mat.hpp"
-#include "opencv2/imgproc.hpp"
-#include "utils/extend_print.hpp"
-
-OpenVINOBackend::OpenVINOBackend(const det_input_t& input_params) : BaseDetectionBackend(input_params) {
-    auto devices = this->GetDevice();
-    std::string devices_str;
-    for (auto&& device : devices) {
-        devices_str += device + ", ";
-    }
-    OPENVINO_ASSERT(std::find(devices.begin(), devices.end(), this->input_params.device) != devices.end(),
-                    "Device name is not in available devices: " + devices_str);
-}
-
-OpenVINOBackend::~OpenVINOBackend() {}
-
-void OpenVINOBackend::LoadModel(const std::string& model_path) {
-    ov::Core core;
-    std::shared_ptr<ov::Model> model = core.read_model(model_path);
-
-    OPENVINO_ASSERT(model->inputs().size() == 1, "Sample supports models with 1 input only");
-    OPENVINO_ASSERT(model->outputs().size() == 1, "Sample supports models with 1 output only");
-    // -------- Step 3. Set up input
-
-    ov::element::Type input_type = ov::element::u8;
-    const ov::Layout tensor_layout{"NHWC"};
-
-    // -------- Step 4. Configure preprocessing --------
-
-    ov::preprocess::PrePostProcessor ppp(model);
-
-    // 1) Set input tensor information:
-    // - input() provides information about a single model input
-    // - reuse precision and shape from already available `input_tensor`
-    // - layout of data is 'NHWC'
-    ppp.input().tensor().set_element_type(input_type).set_layout(tensor_layout);
-    // 2) Adding explicit preprocessing steps:
-    // - convert layout to 'NCHW' (from 'NHWC' specified above at tensor layout)
-    // - apply linear resize from tensor spatial dims to model spatial dims
-    ppp.input().preprocess().resize(ov::preprocess::ResizeAlgorithm::RESIZE_LINEAR);
-    // 4) Here we suppose model has 'NCHW' layout for input
-    ppp.input().model().set_layout("NCHW");
-    // 5) Set output tensor information:
-    // - precision of tensor is supposed to be 'f32'
-    ppp.output().tensor().set_element_type(ov::element::f32);
-
-    // 6) Apply preprocessing modifying the original 'model'
-    model = ppp.build();
-
-    // -------- Step 5. Loading a model to the device --------
-    this->compiled_model = core.compile_model(model, this->input_params.device);
-    if (this->compiled_model.input().get_shape().size() == 4) {
-        auto input_shape = this->compiled_model.input().get_shape();
-        this->input_params.batch_size = input_shape[0];
-        this->input_params.height = input_shape[1];
-        this->input_params.width = input_shape[2];
-        this->input_params.channel = input_shape[3];
-    } else
-        throw std::runtime_error("Model input shape is not BCHW");
-    if (this->compiled_model.output().get_shape().size() != 3)
-        throw std::runtime_error("Model output shape is not BNS");
-    auto output_shape = this->compiled_model.output().get_shape();
-    // this->batch_predictions = det_output_t(output_shape[0], std::vector<detetcion_output_t>(output_shape[1]));
-}
-
-det_output_t OpenVINOBackend::Infer(const cv::Mat& _img) {
-    cv::Mat img;
-    cv::resize(_img,
-               img,
-               cv::Size(this->compiled_model.input().get_shape()[1], this->compiled_model.input().get_shape()[2]));
-
-    auto infer_request = compiled_model.create_infer_request();
-    infer_request.set_input_tensor(
-        ov::Tensor(compiled_model.input().get_element_type(), compiled_model.input().get_shape(), img.data));
-    infer_request.infer();
-
-    const ov::Tensor& output_tensor = infer_request.get_output_tensor();
-    auto output_shape = output_tensor.get_shape();
-
-    float* detections = output_tensor.data<float>();
-    det_output_t batch_predictions;
-    for (int b = 0; b < output_shape[0]; b++) {
-        std::vector<detetcion_output_t> predictions;
-        std::vector<cv::Rect> boxes;
-        for (int n = 0; n < output_shape[1]; n++) {
-            float* detection = &detections[(b * output_shape[1] + n) * output_shape[2]];
-
-            if (detection[4] < this->input_params.threshold.conf)
-                continue;
-
-            int max_class_id = 5;
-            for (int i = 5; i < output_shape[2]; i++) {
-                if (detection[i] > detection[max_class_id])
-                    max_class_id = i;
-            }
-            if (detection[max_class_id] < this->input_params.threshold.score)
-                continue;
-
-            auto box = cv::Rect(cv::Point(detection[0], detection[1]), cv::Point(detection[2], detection[3]));
-            detetcion_output_t prediction{
-                box,
-                detection[4],
-                max_class_id - 5,
-                detection[max_class_id],
-            };
-            boxes.push_back(box);
-
-            predictions.emplace_back(prediction);
-        }
-
-        batch_predictions.emplace_back(predictions);
-    }
-
-    return batch_predictions;  // TODO: enable RVO
-}
-
-std::vector<std::string> OpenVINOBackend::GetDevice() const {
-    ov::Core core;
-    auto availableDevices = core.get_available_devices();
-#ifdef DEBUG
-    {
-        for (auto&& device : availableDevices) {
-            std::cout << device << std::endl;
-        }
-    }
-#endif
-    return availableDevices;
-}
\ No newline at end of file
diff --git a/src/empty.cpp b/src/empty.cpp
deleted file mode 100644
index e69de29..0000000
diff --git a/tools/quantization.py b/tools/quantization.py
deleted file mode 100644
index e69de29..0000000