EasyOCR-CPP/LibEasyOCR-CPP/EasyOCR_Detector.h

#pragma once
#include <vector>
#include "OCRToolBox.h"
#include <opencv2/opencv.hpp>
#include <onnxruntime_cxx_api.h>

namespace uns
{
	class EasyOCR_Detector
	{
	private:
		const float lowText = 0.4f;
		const float textThreshold = 0.7f;
		const float linkThreshold = 0.4f;

	private:
		const OrtApi* ort;

		Ort::Env ort_env;
		Ort::Session* ort_cpu_session;
		Ort::SessionOptions ort_session_options;

		bool ort_inited;
		std::wstring model_path;

		IONames input_names, output_names;
		IONamesStorage input_ns, output_ns;

	private:
		cv::Mat NormalizeMeanVariance(const cv::Mat& in);
		void AdjustResultCoordinates(EOCRD_Rects& polys, float ratioW, float ratioH, float ratioNet = 2.0f);
		void ResizeAspectRatio(const cv::Mat& src, cv::Mat& dst, float squareSize, float magRatio, float& ratio, cv::Size& heatmapSize);
		bool GetDetBoxesCore(const cv::Mat& textmap, const cv::Mat& linkmap, float textThresh, float linkThresh, float lowText, EOCRD_Rects& boxes, cv::Mat& labels, std::vector<int>& mapper, bool estimateNumChars);

	public:
		EasyOCR_Detector();
		EasyOCR_Detector(const EasyOCR_Detector&) = delete;

	public:
		bool Init();
		bool UnInit();
		bool RecheckModelInfo();
		/// <summary>
		/// EasyOCR 文本检测函数
		/// </summary>
		/// <param name="image">待检测的图像（三通道BGR图像）</param>
		/// <returns>检测到的矩形框</returns>
		EOCRD_Rects operator()(const cv::Mat& image);
	};
}