【OpenCV学习一】

最新推荐文章于 2023-03-07 16:59:28 发布

matrix-walker

最新推荐文章于 2023-03-07 16:59:28 发布

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分类专栏： OpenCV 文章标签： OpenCV C++

本文链接：https://blog.youkuaiyun.com/qq_37643960/article/details/99591253

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1. cv::rectangle和cv::putText绘制矩形框, 文字

#include <math.h>
#include <algorithm>
#include <numeric>
#include <opencv2/opencv.hpp>
#include <iostream>
#include <stdio.h>
#include <vector>

// ---------------------- visualize ---------------------- //
int kk = 0;
for (cv::Rect obj: objs) 
{
    // -------- rect --------
    cv::Rect vis_box;
    vis_box.x = (int) obj.x;
    vis_box.y = (int) obj.y;
    vis_box.width  = (int) obj.width;
    vis_box.height = (int) obj.height;
    cv::rectangle(raw_image, vis_box, cv::Scalar(0,0,255), 2);
    
    // -------- class --------
    int l = labels[kk];
    std::string text_label = CLASSES[l];
    //std::cout << text << " ,";
    cv::Point origin_label;
    origin_label.x = vis_box.x+8;
    origin_label.y = vis_box.y+8;
    int font_face = cv::FONT_HERSHEY_PLAIN;
    double font_scale = 1;
    int thickness = 1;  
    cv::putText(raw_image, text_label, origin_label, font_face, font_scale, cv::Scalar(0, 255, 0), thickness, 4, 0);
            
    // -------- score --------
    std::string text_score = std::to_string(scores[kk]);
    cv::Point origin_score;
    origin_score.x = vis_box.x+8;
    origin_score.y = vis_box.y+22;
    cv::putText(raw_image, text_score, origin_score, font_face, font_scale, cv::Scalar(0, 255, 0), thickness, 4, 0);

     kk = kk + 1;
 
}