[OpenCV] Samples 07: create_mask
Opencv create 07 Mask
2023-09-27 14:23:25 时间
鼠标画线,圈地,构造相关mask图片(黑白)。
支持鼠标左键右键中间键点击事件。
/* * create_mask.cpp * * Author: * Siddharth Kherada <siddharthkherada27[at]gmail[dot]com> * * This tutorial demonstrates how to make mask image (black and white). * The program takes as input a source image and ouputs its corresponding * mask image. */ #include "opencv2/imgproc.hpp" #include "opencv2/imgcodecs.hpp" #include "opencv2/highgui.hpp" #include "opencv2/core.hpp" #include <iostream> #include <stdlib.h> using namespace std; using namespace cv; Mat img0, img1, res1, final; Point point; int drag = 0; int numpts = 100; Point* pts = new Point[100]; int var = 0; int flag = 0; int flag1 = 0; int minx,miny,maxx,maxy,lenx,leny; int channel; void mouseHandler(int, int, int, int, void*); void mouseHandler(int event, int x, int y, int, void*) { // Jeff --> Click Left button: status down. if (event == EVENT_LBUTTONDOWN && !drag) { if(flag1 == 0) { if(var==0) img1 = img0.clone(); point = Point(x, y); circle(img1,point,2,Scalar(0, 0, 255),-1, 8, 0); pts[var] = point; var++; drag = 1; if(var>1) line(img1,pts[var-2], point, Scalar(0, 0, 255), 2, 8, 0); imshow("Source", img1); } } // Jeff --> Click Left button: status up. if (event == EVENT_LBUTTONUP && drag) { imshow("Source", img1); drag = 0; } /* * Jeff --> Click Right button. */ if (event == EVENT_RBUTTONDOWN) { flag1 = 1; img1 = img0.clone(); for(int i = var; i < numpts ; i++) pts[i] = point; if(var!=0) { const Point* pts3[1] = {&pts[0]}; polylines( img1, pts3, &numpts,1, 1, Scalar(0,0,0), 2, 8, 0); } for(int i=0;i<var;i++) { minx = min(minx,pts[i].x); maxx = max(maxx,pts[i].x); miny = min(miny,pts[i].y); maxy = max(maxy,pts[i].y); } lenx = maxx - minx; leny = maxy - miny; imshow("Source", img1); } if (event == EVENT_RBUTTONUP) { flag = var; final = Mat::zeros(img0.size(),CV_8UC3); res1 = Mat::zeros(img0.size(),CV_8UC1); const Point* pts4[1] = {&pts[0]}; fillPoly(res1, pts4,&numpts, 1, Scalar(255, 255, 255), 8, 0); bitwise_and(img0, img0, final,res1); imshow("mask",res1); imwrite("mask.png",res1); imshow("Source", img1); } if (event == EVENT_MBUTTONDOWN) { for(int i = 0; i < numpts ; i++) { pts[i].x=0; pts[i].y=0; } var = 0; flag1 = 0; minx = INT_MAX; miny = INT_MAX; maxx = INT_MIN; maxy = INT_MIN; imshow("Source", img0); drag = 0; } } int main(int argc, char **argv) { cv::CommandLineParser parser(argc, argv, "{help h | | show help message}{@input | | input image}"); if (parser.has("help")) { parser.printMessage(); return 0; } string input_image = parser.get<string>("@input"); if (input_image.empty()) { parser.printMessage(); parser.printErrors(); return 0; } Mat src = imread(input_image); minx = INT_MAX; miny = INT_MAX; maxx = INT_MIN; maxy = INT_MIN; img0 = src; // Jeff --> number of channels. channel = img0.channels(); cout << "channel = " << channel << endl; res1 = Mat::zeros(img0.size(),CV_8UC1); final = Mat::zeros(img0.size(),CV_8UC3); //////////// source image /////////////////// namedWindow("Source", 1); /* * Jeff --> listen to mouse event. */ setMouseCallback("Source", mouseHandler, NULL); imshow("Source", img0); waitKey(0); img0.release(); img1.release(); }
相关文章
- 【计算机视觉】opencv读取多个摄像头
- opencv g-api notes
- 编译opencv python
- opencv做的美女找茬程序~
- 实战 | 粘连物体分割与计数应用(一)--基于形态学+连通域处理 Halcon/OpenCV实现比较
- OpenCV图像无缝融合-seamlessClone介绍与使用(附Python/C++源码)
- OpenCV人工智能图像处理学习笔记 第5章 计算机视觉加强之图像美化
- 使用Python,OpenCV追踪对象的轨迹,来确定其移动方向
- 使用Python,OpenCV进行银行支票数字和符号的OCR
- 前景检测算法_4(opencv自带GMM)
- Opencv暑期历程--Day10(6种肤色检测方法,YCrCb肤色模型解释,再理解一遍掩模)
- linux下使用OpenCV的一些问题
- opencv python debug记录
- opencv最大值滤波(不局限于图像)
- python-opencv-旋转