C++: Object Detection

A general-purpose object detector based on YOLOX (opens in a new tab) is integrated with Daisykit. The models are trained on the COCO dataset using the official repository of YOLOX (opens in a new tab). You can retrain the model with your custom dataset and convert it to NCNN format, which can be integrated into Daisykit easily.

Source code: src/examples/demo_object_detector_yolox.cpp.

#include "daisykit/common/types.h"
#include "daisykit/flows/object_detector_flow.h"
#include "third_party/json.hpp"
 
#include <stdio.h>
#include <fstream>
#include <iostream>
#include <opencv2/opencv.hpp>
#include <streambuf>
#include <string>
#include <vector>
 
using namespace cv;
using namespace std;
using json = nlohmann::json;
using namespace daisykit::types;
using namespace daisykit::flows;
 
int main(int, char**) {
  std::ifstream t("configs/object_detector_yolox_config.json");
  std::string config_str((std::istreambuf_iterator<char>(t)),
                         std::istreambuf_iterator<char>());
 
  ObjectDetectorFlow flow(config_str);
 
  Mat frame;
  VideoCapture cap(0);
 
  while (1) {
    cap >> frame;
    cv::Mat rgb;
    cv::cvtColor(frame, rgb, cv::COLOR_BGR2RGB);
 
    std::vector<Object> objects = flow.Process(rgb);
    flow.DrawResult(rgb, objects);
 
    cv::Mat draw;
    cv::cvtColor(rgb, draw, cv::COLOR_RGB2BGR);
    imshow("Image", draw);
    waitKey(1);
  }
 
  return 0;
}

Update the configurations by modifying config files in assets/configs.

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