[英]ball tracking using opencv on visual studio 2010 gives unhandled exception
I was working on object tracking using opencv on Visual studio 2010 using an online resource. 我正在使用在线资源在Visual Studio 2010上使用opencv进行对象跟踪。 I was able to get few programs to run, but I'm facing an issue with this one.
我几乎没有程序可以运行,但是我遇到了一个问题。
Error I'm getting 我收到错误
The program builds fine and starts running with my web cam switchin on, however, I get a pop up saying 该程序运行良好,并在打开网络摄像头的情况下开始运行,但是,我弹出一个对话框
And this is what the console says 这就是控制台所说的
Code is as follows 代码如下
#include <sstream>
#include <string>
#include <iostream>
#include <opencv\highgui.h>
#include <opencv\cv.h>
using namespace cv;
//initial min and max HSV filter values.
//these will be changed using trackbars
int H_MIN = 0;
int H_MAX = 256;
int S_MIN = 0;
int S_MAX = 256;
int V_MIN = 0;
int V_MAX = 256;
//default capture width and height
const int FRAME_WIDTH = 640;
const int FRAME_HEIGHT = 480;
//max number of objects to be detected in frame
const int MAX_NUM_OBJECTS=50;
//minimum and maximum object area
const int MIN_OBJECT_AREA = 20*20;
const int MAX_OBJECT_AREA = FRAME_HEIGHT*FRAME_WIDTH/1.5;
//names that will appear at the top of each window
const string windowName = "Original Image";
const string windowName1 = "HSV Image";
const string windowName2 = "Thresholded Image";
const string windowName3 = "After Morphological Operations";
const string trackbarWindowName = "Trackbars";
void on_trackbar( int, void* )
{//This function gets called whenever a
// trackbar position is changed
}
string intToString(int number){
std::stringstream ss;
ss << number;
return ss.str();
}
void createTrackbars(){
//create window for trackbars
namedWindow(trackbarWindowName,0);
//create memory to store trackbar name on window
char TrackbarName[50];
sprintf( TrackbarName, "H_MIN", H_MIN);
sprintf( TrackbarName, "H_MAX", H_MAX);
sprintf( TrackbarName, "S_MIN", S_MIN);
sprintf( TrackbarName, "S_MAX", S_MAX);
sprintf( TrackbarName, "V_MIN", V_MIN);
sprintf( TrackbarName, "V_MAX", V_MAX);
//create trackbars and insert them into window
//3 parameters are: the address of the variable that is changing when the trackbar is moved(eg.H_LOW),
//the max value the trackbar can move (eg. H_HIGH),
//and the function that is called whenever the trackbar is moved(eg. on_trackbar)
// ----> ----> ---->
createTrackbar( "H_MIN", trackbarWindowName, &H_MIN, H_MAX, on_trackbar );
createTrackbar( "H_MAX", trackbarWindowName, &H_MAX, H_MAX, on_trackbar );
createTrackbar( "S_MIN", trackbarWindowName, &S_MIN, S_MAX, on_trackbar );
createTrackbar( "S_MAX", trackbarWindowName, &S_MAX, S_MAX, on_trackbar );
createTrackbar( "V_MIN", trackbarWindowName, &V_MIN, V_MAX, on_trackbar );
createTrackbar( "V_MAX", trackbarWindowName, &V_MAX, V_MAX, on_trackbar );
}
void drawObject(int x, int y,Mat &frame){
//use some of the openCV drawing functions to draw crosshairs
//on your tracked image!
//UPDATE:JUNE 18TH, 2013
//added 'if' and 'else' statements to prevent
//memory errors from writing off the screen (ie. (-25,-25) is not within the window!)
circle(frame,Point(x,y),20,Scalar(0,255,0),2);
if(y-25>0)
line(frame,Point(x,y),Point(x,y-25),Scalar(0,255,0),2);
else line(frame,Point(x,y),Point(x,0),Scalar(0,255,0),2);
if(y+25<FRAME_HEIGHT)
line(frame,Point(x,y),Point(x,y+25),Scalar(0,255,0),2);
else line(frame,Point(x,y),Point(x,FRAME_HEIGHT),Scalar(0,255,0),2);
if(x-25>0)
line(frame,Point(x,y),Point(x-25,y),Scalar(0,255,0),2);
else line(frame,Point(x,y),Point(0,y),Scalar(0,255,0),2);
if(x+25<FRAME_WIDTH)
line(frame,Point(x,y),Point(x+25,y),Scalar(0,255,0),2);
else line(frame,Point(x,y),Point(FRAME_WIDTH,y),Scalar(0,255,0),2);
putText(frame,intToString(x)+","+intToString(y),Point(x,y+30),1,1,Scalar(0,255,0),2);
}
void morphOps(Mat &thresh){
//create structuring element that will be used to "dilate" and "erode" image.
//the element chosen here is a 3px by 3px rectangle
Mat erodeElement = getStructuringElement( MORPH_RECT,Size(3,3));
//dilate with larger element so make sure object is nicely visible
Mat dilateElement = getStructuringElement( MORPH_RECT,Size(8,8));
erode(thresh,thresh,erodeElement);
erode(thresh,thresh,erodeElement);
dilate(thresh,thresh,dilateElement);
dilate(thresh,thresh,dilateElement);
}
void trackFilteredObject(int &x, int &y, Mat threshold, Mat &cameraFeed){
Mat temp;
threshold.copyTo(temp);
//these two vectors needed for output of findContours
vector< vector<Point> > contours;
vector<Vec4i> hierarchy;
//find contours of filtered image using openCV findContours function
findContours(temp,contours,hierarchy,CV_RETR_CCOMP,CV_CHAIN_APPROX_SIMPLE );
//use moments method to find our filtered object
double refArea = 0;
bool objectFound = false;
if (hierarchy.size() > 0) {
int numObjects = hierarchy.size();
//if number of objects greater than MAX_NUM_OBJECTS we have a noisy filter
if(numObjects<MAX_NUM_OBJECTS){
for (int index = 0; index >= 0; index = hierarchy[index][0]) {
Moments moment = moments((cv::Mat)contours[index]);
double area = moment.m00;
//if the area is less than 20 px by 20px then it is probably just noise
//if the area is the same as the 3/2 of the image size, probably just a bad filter
//we only want the object with the largest area so we safe a reference area each
//iteration and compare it to the area in the next iteration.
if(area>MIN_OBJECT_AREA && area<MAX_OBJECT_AREA && area>refArea){
x = moment.m10/area;
y = moment.m01/area;
objectFound = true;
refArea = area;
}else objectFound = false;
}
//let user know you found an object
if(objectFound ==true){
putText(cameraFeed,"Tracking Object",Point(0,50),2,1,Scalar(0,255,0),2);
//draw object location on screen
drawObject(x,y,cameraFeed);}
}else putText(cameraFeed,"TOO MUCH NOISE! ADJUST FILTER",Point(0,50),1,2,Scalar(0,0,255),2);
}
}
int main(int argc, char* argv[])
{
//some boolean variables for different functionality within this
//program
bool trackObjects = false;
bool useMorphOps = false;
//Matrix to store each frame of the webcam feed
Mat cameraFeed;
//matrix storage for HSV image
Mat HSV;
//matrix storage for binary threshold image
Mat threshold;
//x and y values for the location of the object
int x=0, y=0;
//create slider bars for HSV filtering
createTrackbars();
//video capture object to acquire webcam feed
VideoCapture capture;
//open capture object at location zero (default location for webcam)
capture.open(0);
//set height and width of capture frame
capture.set(CV_CAP_PROP_FRAME_WIDTH,FRAME_WIDTH);
capture.set(CV_CAP_PROP_FRAME_HEIGHT,FRAME_HEIGHT);
//start an infinite loop where webcam feed is copied to cameraFeed matrix
//all of our operations will be performed within this loop
while(1){
//store image to matrix
capture.read(cameraFeed);
//convert frame from BGR to HSV colorspace
cvtColor(cameraFeed,HSV,COLOR_BGR2HSV);
//filter HSV image between values and store filtered image to
//threshold matrix
inRange(HSV,Scalar(H_MIN,S_MIN,V_MIN),Scalar(H_MAX,S_MAX,V_MAX),threshold);
//perform morphological operations on thresholded image to eliminate noise
//and emphasize the filtered object(s)
if(useMorphOps)
morphOps(threshold);
//pass in thresholded frame to our object tracking function
//this function will return the x and y coordinates of the
//filtered object
if(trackObjects)
trackFilteredObject(x,y,threshold,cameraFeed);
//show frames
imshow(windowName2,threshold);
imshow(windowName,cameraFeed);
imshow(windowName1,HSV);
//delay 30ms so that screen can refresh.
//image will not appear without this waitKey() command
waitKey(30);
}
return 0;
}
(Credit : Kyle Hounslow) (来源:凯尔·洪斯洛)
Configuration 组态
This is done on an x64 system, but I'm doing a New->Project->VisualC++->Win32->Win32 Console Application 这是在x64系统上完成的,但是我正在做一个New-> Project-> VisualC ++-> Win32-> Win32 Console Application
Settings I have taken care of 我照顾的设置
Under project Properties -> Configuration Properties ->Linker ->Input -> Additional Dependancies and added the following 在项目属性->配置属性->链接器->输入->其他依赖项下,添加以下内容
Under project Properties -> Configuration Properties -> Linker -> General -> Use Library Dependency Inputs, gave Yes(was No by default) 在项目属性->配置属性->链接器->常规->使用库依赖输入下,输入是(默认为否)
I was getting an error, machine type 'x64' conflicts with target machine type 'X86' : So I did the following a.Properties > Configuration Properties > Linker > Advanced > Target Machine ->Selected MachineX64 b.Went to Build > Configuration Manager from the main menu in visual studio and changed Active Solution platform to x64 and Platform to x64 as follows 我遇到错误,机器类型'x64'与目标机器类型'X86'冲突:所以我做了以下操作a。属性>配置属性>链接器>高级>目标机器->选择的MachineX64 b。去构建>配置管理器从Visual Studio的主菜单中将Active Solution平台更改为x64,将Platform更改为x64,如下所示
I was getting this error, so I did Project Properties -> Configuration Properties -> Linker (General) -> Enable Incremental Linking -> "No (/INCREMENTAL:NO)" 我收到此错误,所以我做了项目属性->配置属性->链接器(常规)->启用增量链接->“否(/ INCREMENTAL:NO)”
Please advise me what I'm doing wrong and how I can get the program to run without crashing 请告诉我我在做什么错以及如何使程序运行而不会崩溃
As far as I can tell, the error message says that the input image to cvtColor doesn't have the correct format. 据我所知,错误消息指出cvtColor的输入图像格式不正确。 It's expecting a 3 or 4 channel image, usually 24bpp or 32bpp, but it's getting something else.
期望有3或4通道的图像,通常为24bpp或32bpp,但它还有其他用途。
Perhaps the captured frame is grayscale, or the capture is failing. 捕获的帧可能是灰度的,或者捕获失败。
To be sure, just print out the captured image details: type and number of channels 可以肯定的是,只需打印出捕获的图像详细信息:通道的类型和数量
and then work your way from there. 然后从那里开始。
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