// CV_IP.cpp : 定义控制台应用程序的入口点。
//
#include "stdafx.h"
#include "opencv2/core/core.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/highgui/highgui.hpp"
#include <stdio.h>
using namespace cv;
using namespace std;
//全局变量声明
Mat g_srcImage, g_grayImage;
int g_nThresh = 160;
int g_nThresh_max = 255;
RNG g_rng(12345);
//设置颜色
Scalar color = Scalar(0, 255, 0);
//全局函数声明
void on_COntoursChange(int, void *);
//主函数
int main()
{
//载入源图像
g_srcImage = imread("G:\\picture\\cv\\sample1.bmp");
if (!g_srcImage.data) { printf("读取源图像srcImage错误~!\n"); return false; }
//将原图像灰度化并进行平滑降噪
cvtColor(g_srcImage, g_grayImage, COLOR_BGR2GRAY);
blur(g_grayImage, g_grayImage, Size(3, 3));
//创建原始图窗口以及阈值滑动条
namedWindow("image[origin]");
imshow("image[origin]", g_srcImage);
createTrackbar("threshold: ", "image[origin]", &g_nThresh, g_nThresh_max, on_COntoursChange);
on_COntoursChange(0, 0);
waitKey(0);
return 0;
}
//回调函数
void on_COntoursChange(int, void *)
{
//定义一些参数
Mat threshold_output;
vector<vector<Point>>contours;
vector<Vec4i>hierarchy;
//使用threshold检测边缘
threshold(g_grayImage, threshold_output, g_nThresh, 255, THRESH_BINARY);
//找出轮廓
findContours(threshold_output, contours, hierarchy, RETR_TREE, CHAIN_APPROX_SIMPLE, Point(0, 0));
//多边形逼近轮廓+获取矩形
vector<vector<Point>>contours_poly(contours.size());
vector<Rect>boundRect(contours.size());
vector<Point2f>center(contours.size());
vector<float>radius(contours.size());
//一个循环,遍历所有部分,进行本程序最核心的操作
for (unsigned int i = 0; i < contours.size(); ++i)
{
approxPolyDP(Mat(contours[i]), contours_poly[i], 3, true);//用指定精度3逼近多边形曲线
boundRect[i] = boundingRect(Mat(contours_poly[i]));//计算点集的最外面(up-right)矩形边界
minEnclosingCircle(contours_poly[i], center[i], radius[i]);//对给定的2D点集,寻找最小面积的包围圆形
}
//绘制包围的矩形框
Mat drawing = Mat::zeros(threshold_output.size(), CV_8UC3);
Mat temp;
int cnt = 0;
for (int i=0; i < contours.size(); ++i) //标注元件,保存样本
{
if (boundRect[i].width < 10||boundRect[i].height<10||boundRect[i].width>100)
continue;
// temp = g_srcImage(boundRect[i]);
// char name[128] = { 0 };
// sprintf_s(name, "G:\\picture\\cv\\data\\data%d.jpg", ++cnt);
// imwrite(name, temp);
//drawContours(drawing, contours_poly, i, color, 1, 1, vector<Vec4i>(), 0, Point());
//标注元件
rectangle(g_srcImage, boundRect[i].tl(), boundRect[i].br(), color, 2, 8, 0);
}
namedWindow("image[renderings]");
imshow("image[renderings]", g_srcImage);
imwrite("G:\\picture\\cv\\temp.bmp", g_srcImage);
}
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最新推荐文章于 2025-08-13 19:21:43 发布