C++ c++;检测平方后运行命令的算法
我有检测正方形的opencv代码。现在我想在detect square之后,代码运行另一个命令 代码如下:C++ c++;检测平方后运行命令的算法,c++,opencv,C++,Opencv,我有检测正方形的opencv代码。现在我想在detect square之后,代码运行另一个命令 代码如下: #include "cv.h" #include "cxcore.h" #include "highgui.h" #include "math.h" #include <iostream> #include <stdio.h> #include <string.h> #include <sstream> using namespace st
#include "cv.h"
#include "cxcore.h"
#include "highgui.h"
#include "math.h"
#include <iostream>
#include <stdio.h>
#include <string.h>
#include <sstream>
using namespace std;
double angle( CvPoint* pt1, CvPoint* pt2, CvPoint* pt0 )
{
double dx1 = pt1->x - pt0->x;
double dy1 = pt1->y - pt0->y;
double dx2 = pt2->x - pt0->x;
double dy2 = pt2->y - pt0->y;
return (dx1*dx2 + dy1*dy2)/sqrt((dx1*dx1 + dy1*dy1)*(dx2*dx2 + dy2*dy2) + 1e-10);
} // angle
IplImage* findSquares4( IplImage* img, CvMemStorage* storage )
{
double s = 0, t = 0;
int sdetect =0, sqdetect = 0,sqt = 0;
CvSeq* contours;
CvSeq* result;
CvSeq* squares = cvCreateSeq( 0, sizeof( CvSeq), sizeof( CvPoint), storage );
IplImage* cny = cvCreateImage(cvGetSize(img), 8, 1);
cvCanny(img, cny, 5, 100, 3);
cvNamedWindow("canny",CV_WINDOW_AUTOSIZE);
cvShowImage("canny",cny);
cvFindContours( cny, storage, &contours, sizeof( CvContour), CV_RETR_LIST, CV_CHAIN_APPROX_SIMPLE, cvPoint( 0, 0) );
while( contours )
{
result = cvApproxPoly( contours,
sizeof( CvContour),
storage,
CV_POLY_APPROX_DP,
cvContourPerimeter( contours)*0.02, 0 );
if( result->total == 4 &&
fabs( cvContourArea( result, CV_WHOLE_SEQ)) > 1000 &&
cvCheckContourConvexity( result) )
{
s = 0;
for( int i = 2; i < 5; i++ )
{
{
t = fabs( angle(
( CvPoint*)cvGetSeqElem( result, i ),
( CvPoint*)cvGetSeqElem( result, i-2 ),
( CvPoint*)cvGetSeqElem( result, i-1 )));
s = s > t ? s : t;
cout << "s = " << s<< endl;
cout << "t = " << t<< endl;
}
} // for
if( s < 0.3 )
for( int i = 0; i < 4; i++ )
cvSeqPush( squares,
( CvPoint*)cvGetSeqElem( result, i ));
} // if
contours = contours->h_next;
} // while
if ((squares->total/4) = 1)
{
sdetect = 1;
} / /if
else
{
sdetect = 2;
sleep(0.5);
} // else
if (sqdetect != sdetect)
{
sqdetect=sdetect;
switch(sqdetect)
{
case 0 : system(NULL) ; break;
case 2 : cout<< "no "<< endl; break;
case 1 : system("./ambil1.sh"); break;
} // switch
} // if
sdetect = 0;
cout<<"Persegi : "<< squares->total/4 <<endl;
cvReleaseMemStorage(&storage);
cvClearSeq(squares);
} // findSquares4
void drawSquares(IplImage *img, CvSeq* squares )
{
CvFont font;
cvInitFont( &font, CV_FONT_HERSHEY_SIMPLEX, 0.4f, 0.4f, 0,1, 8 );
int i,j,sdetect,sqdetect = 0;
CvSeqReader reader;
cvStartReadSeq( squares, &reader, 0 );
for( i = 0; i < squares->total; i += 4 )
{
j++;
CvPoint pt[4], *rect = pt;
int count = 4;
// read 4 vertices
memcpy( pt, reader.ptr, squares->elem_size );
CV_NEXT_SEQ_ELEM( squares->elem_size, reader );
memcpy( pt + 1, reader.ptr, squares->elem_size );
CV_NEXT_SEQ_ELEM( squares->elem_size, reader );
memcpy( pt + 2, reader.ptr, squares->elem_size );
CV_NEXT_SEQ_ELEM( squares->elem_size, reader );
memcpy( pt + 3, reader.ptr, squares->elem_size );
CV_NEXT_SEQ_ELEM( squares->elem_size, reader );
cvPutText( img, "SQUARE", pt[i], &font, CV_RGB(20,255,0));
cvPolyLine( img, &rect, &count, 1, 1, CV_RGB(200,0,0), 4, CV_AA, 0 );
} // for
cvClearSeq(squares);
} // drawSquares
#包括“cv.h”
#包括“cxcore.h”
#包括“highgui.h”
#包括“math.h”
#包括
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#包括
#包括
使用名称空间std;
双角度(CvPoint*pt1、CvPoint*pt2、CvPoint*pt0)
{
双dx1=pt1->x-pt0->x;
双dy1=pt1->y-pt0->y;
双dx2=pt2->x-pt0->x;
双dy2=pt2->y-pt0->y;
返回(dx1*dx2+dy1*dy2)/sqrt(dx1*dx1+dy1*dy1)*(dx2*dx2+dy2*dy2)+1e-10);
}//角度
IplImage*findSquares4(IplImage*img、CvMemStorage*存储)
{
双s=0,t=0;
int-sdetect=0,sqdetect=0,sqt=0;
CvSeq*等高线;
CvSeq*结果;
CvSeq*squares=cvCreateSeq(0,sizeof(CvSeq),sizeof(CvPoint),存储);
IplImage*cny=cvCreateImage(cvGetSize(img),8,1);
cvCanny(人民币元,万元,5100元,3元);
cvNamedWindow(“canny”,CV\u WINDOW\u AUTOSIZE);
cvShowImage(“canny”,人民币);
cvFindContours(人民币、仓库和等高线、sizeof(CvContour)、CV_RETR_列表、CV_CHAIN_近似值、cvPoint(0,0));
while(等高线)
{
结果=CVAPROXPOLY(轮廓,
sizeof(CvContour),
存储
CV_POLY_近似值_DP,
周长(等高线)*0.02,0;
如果(结果->总计==4&&
晶圆厂(CVA面积(结果,CV_整体顺序))>1000&&
CVV凸性(结果))
{
s=0;
对于(int i=2;i<5;i++)
{
{
t=fabs(角度(
(CvPoint*)cvGetSeqElem(结果,i),
(CvPoint*)cvGetSeqElem(结果,i-2),
(CvPoint*)CVGetSekelem(结果,i-1));
s=s>t?s:t;
cout程序等待下级命令完成。在此期间,它不会响应
如果这是您所需要的,系统
就足够了
如果您想触发并忘记,可以使用fork/exec
对,或者只使用shell&
操作符在后台运行stuff
如果需要启动,请更改程序的行为,然后在从属命令完成时将其更改回来,您几乎必须使用fork/exec/SIGCHLD/waitpid
组合。程序将等待从属命令完成。在此期间,它不会响应
如果这是您所需要的,系统
就足够了
如果您想触发并忘记,可以使用fork/exec
对,或者只使用shell&
操作符在后台运行stuff
如果需要启动,请更改程序的行为,然后在从属命令完成后将其更改回来,您几乎必须使用fork/exec/SIGCHLD/waitpid
组合。什么是“启动并忘记”呢?启动从属程序,让它与主程序并行运行,而不需要与主程序之间进行任何交互第二,你所说的“开火并忘记”是什么意思?启动从属程序,让它与主程序并行运行,两者之间没有任何交互。