OpenCV: 寻找图像轮廓并绘制

OpenCV: 寻找图像轮廓并绘制#include "stdafx.h"
#include <cv.h>
#include <highgui.h>
#include <stdio.h>
#include<windows.h>
//Some defines we left out of the book
#define CVX_RED CV_RGB（0xff,0x00,0x00）
#define CVX_GREEN CV_RGB（0x00,0xff,0x00）
#define CVX_BLUE CV_RGB（0x00,0x00,0xff）
// Example 8-3. Finding and drawing contours on an input image
int main（int argc, char* argv[]） {
cvNamedWindow（ "lkjc", 1 ）;
IplImage* img_8uc1 = NULL;

//Changed this a little for safer image loading and help if not
if（ argc ！= 1 || ！（img_8uc1 = cvLoadImage（ "T_signs.jpg", CV_LOAD_IMAGE_GRAYSCALE ）））{
printf（" Example 8_3 Drawing Contours Call is: ./ch8_ex8_3 image "）;///* 8 bit unless combined with CV_LOAD_IMAGE_ANYDEPTH, color */
return -1;}

IplImage* img_edge = cvCreateImage（ cvGetSize（img_8uc1）, 8, 1 ）;
IplImage* img_8uc3 = cvCreateImage（ cvGetSize（img_8uc1）, 8, 3 ）;
cvThreshold（ img_8uc1, img_edge, 128, 255, CV_THRESH_BINARY ）;//对数组元素进行固定阈值操作
CvMemStorage* storage = cvCreateMemStorage（）;
CvSeq* first_contour = NULL;
int Nc = cvFindContours（//在二值图像中寻找轮廓
img_edge,
storage,
&first_contour,
sizeof（CvContour）,
CV_RETR_LIST // Try all four values and see what happens
）;
int n=0,k;
printf（" Hit any key to draw the next contour, ESC to quit "）;
printf（ "Total Contours Detected: %d ", Nc ）;
for（ CvSeq* c=first_contour; c！=NULL; c=c->h_next ） {
cvCvtColor（ img_8uc1, img_8uc3, CV_GRAY2BGR ）;
cvDrawContours（//在图像中绘制外部和内部的轮廓
img_8uc3,
c,
CVX_RED, //Yarg, these are defined above, but not in the book. Oops
CVX_BLUE,
0, // 如果等级为0，绘制单独的轮廓Try different values of max_level, and see what happens
2,
8
）;
printf（"Contour #%d ", n ）;
cvShowImage（ "lkjc", img_8uc3 ）;
printf（" %d elements: ", c->total ）;
for（ int i=0; i<c->total; ++i ） {
CvPoint* p = CV_GET_SEQ_ELEM（ CvPoint, c, i ）;
printf（" （%d,%d） ", p->x, p->y ）;
}
if（（k = cvWaitKey（）&0x7F） == 27）
break;
n++;
}
printf（"Finished all contours. Hit key to finish "）;
cvCvtColor（ img_8uc1, img_8uc3, CV_GRAY2BGR ）;
cvShowImage（ "lkjc", img_8uc3 ）;
cvWaitKey（0）;
cvDestroyWindow（ "lkjc" ）;
cvReleaseImage（ &img_8uc1 ）;
cvReleaseImage（ &img_8uc3 ）;
cvReleaseImage（ &img_edge ）;
system（"pause"）;
return 0;
}--------------------------------------分割线 --------------------------------------Ubuntu Linux下安装OpenCV2.4.1所需包 http://www.linuxidc.com/Linux/2012-08/68184.htmUbuntu 12.04 安装 OpenCV2.4.2 http://www.linuxidc.com/Linux/2012-09/70158.htmCentOS下OpenCV无法读取视频文件 http://www.linuxidc.com/Linux/2011-07/39295.htmUbuntu 12.04下安装OpenCV 2.4.5总结 http://www.linuxidc.com/Linux/2013-06/86704.htmUbuntu 10.04中安装OpenCv2.1九步曲 http://www.linuxidc.com/Linux/2010-09/28678.htm基于QT和OpenCV的人脸识别系统 http://www.linuxidc.com/Linux/2011-11/47806.htm--------------------------------------分割线 --------------------------------------OpenCV的详细介绍：请点这里
OpenCV的下载地址：请点这里本文永久更新链接地址：http://www.linuxidc.com/Linux/2014-10/108703.htm