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deploy/cpp_infer/include/structure_layout.h

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+// 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 <fstream>
+#include <include/postprocess_op.h>
+#include <include/preprocess_op.h>
+#include <iostream>
+#include <memory>
+#include <yaml-cpp/yaml.h>
+
+namespace paddle_infer {
+class Predictor;
+}
+
+namespace PaddleOCR {
+
+class StructureLayoutRecognizer {
+public:
+  explicit StructureLayoutRecognizer(
+      const std::string &model_dir, const bool &use_gpu, const int &gpu_id,
+      const int &gpu_mem, const int &cpu_math_library_num_threads,
+      const bool &use_mkldnn, const std::string &label_path,
+      const bool &use_tensorrt, const std::string &precision,
+      const double &layout_score_threshold,
+      const double &layout_nms_threshold) noexcept {
+    this->use_gpu_ = use_gpu;
+    this->gpu_id_ = gpu_id;
+    this->gpu_mem_ = gpu_mem;
+    this->cpu_math_library_num_threads_ = cpu_math_library_num_threads;
+    this->use_mkldnn_ = use_mkldnn;
+    this->use_tensorrt_ = use_tensorrt;
+    this->precision_ = precision;
+
+    std::string new_label_path = label_path;
+    std::string yaml_file_path = model_dir + "/inference.yml";
+    std::ifstream yaml_file(yaml_file_path);
+    if (yaml_file.is_open()) {
+      std::string model_name;
+      std::vector<std::string> rec_char_list;
+      try {
+        YAML::Node config = YAML::LoadFile(yaml_file_path);
+        if (config["Global"] && config["Global"]["model_name"]) {
+          model_name = config["Global"]["model_name"].as<std::string>();
+        }
+        if (!model_name.empty()) {
+          std::cerr << "Error: " << model_name << " is currently not supported."
+                    << std::endl;
+          std::exit(EXIT_FAILURE);
+        }
+        if (config["PostProcess"] && config["PostProcess"]["character_dict"]) {
+          rec_char_list = config["PostProcess"]["character_dict"]
+                              .as<std::vector<std::string>>();
+        }
+      } catch (const YAML::Exception &e) {
+        std::cerr << "Failed to load YAML file: " << e.what() << std::endl;
+      }
+      if (label_path == "../../ppocr/utils/ppocr_keys_v1.txt" &&
+          !rec_char_list.empty()) {
+        std::string new_rec_char_dict_path = model_dir + "/ppocr_keys.txt";
+        std::ofstream new_file(new_rec_char_dict_path);
+        if (new_file.is_open()) {
+          for (const auto &character : rec_char_list) {
+            new_file << character << '\n';
+          }
+          new_label_path = new_rec_char_dict_path;
+        }
+      }
+    }
+
+    this->post_processor_.init(new_label_path, layout_score_threshold,
+                               layout_nms_threshold);
+    LoadModel(model_dir);
+  }
+
+  // Load Paddle inference model
+  void LoadModel(const std::string &model_dir) noexcept;
+
+  void Run(const cv::Mat &img, std::vector<StructurePredictResult> &result,
+           std::vector<double> &times) noexcept;
+
+private:
+  std::shared_ptr<paddle_infer::Predictor> predictor_;
+
+  bool use_gpu_ = false;
+  int gpu_id_ = 0;
+  int gpu_mem_ = 4000;
+  int cpu_math_library_num_threads_ = 4;
+  bool use_mkldnn_ = false;
+
+  std::vector<float> mean_ = {0.485f, 0.456f, 0.406f};
+  std::vector<float> scale_ = {1 / 0.229f, 1 / 0.224f, 1 / 0.225f};
+  bool is_scale_ = true;
+
+  bool use_tensorrt_ = false;
+  std::string precision_ = "fp32";
+
+  // pre-process
+  Resize resize_op_;
+  Normalize normalize_op_;
+  Permute permute_op_;
+
+  // post-process
+  PicodetPostProcessor post_processor_;
+};
+
+} // namespace PaddleOCR