text: // Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  //     http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  
  #pragma once
  
  #include "opencv2/core.hpp"
  #include "opencv2/imgcodecs.hpp"
  #include "opencv2/imgproc.hpp"
  #include <chrono>
  #include <iomanip>
  #include <iostream>
  #include <ostream>
  #include <vector>
  
  #include <cstring>
  #include <fstream>
  #include <numeric>
  
  #include "include/clipper.h"
  #include "include/utility.h"
  
  using namespace std;
  
  namespace PaddleOCR {
  
  class PostProcessor {
  public:
    void GetContourArea(const std::vector<std::vector<float>> &box,
                        float unclip_ratio, float &distance);
  
    cv::RotatedRect UnClip(std::vector<std::vector<float>> box,
                           const float &unclip_ratio);
  
    float **Mat2Vec(cv::Mat mat);
  
    std::vector<std::vector<int>>
    OrderPointsClockwise(std::vector<std::vector<int>> pts);
  
    std::vector<std::vector<float>> GetMiniBoxes(cv::RotatedRect box,
                                                 float &ssid);
  
    float BoxScoreFast(std::vector<std::vector<float>> box_array, cv::Mat pred);
  
    std::vector<std::vector<std::vector<int>>>
    BoxesFromBitmap(const cv::Mat pred, const cv::Mat bitmap,
                    const float &box_thresh, const float &det_db_unclip_ratio);
  
    std::vector<std::vector<std::vector<int>>>
    FilterTagDetRes(std::vector<std::vector<std::vector<int>>> boxes,
                    float ratio_h, float ratio_w, cv::Mat srcimg);
  
  private:
    static bool XsortInt(std::vector<int> a, std::vector<int> b);
  
    static bool XsortFp32(std::vector<float> a, std::vector<float> b);
  
    std::vector<std::vector<float>> Mat2Vector(cv::Mat mat);
  
    inline int _max(int a, int b) { return a >= b ? a : b; }
  
    inline int _min(int a, int b) { return a >= b ? b : a; }
  
    template <class T> inline T clamp(T x, T min, T max) {
      if (x > max)
        return max;
      if (x < min)
        return min;
      return x;
    }
  
    inline float clampf(float x, float min, float max) {
      if (x > max)
        return max;
      if (x < min)
        return min;
      return x;
    }
  };
  
  } // namespace PaddleOCR
  