I do not use C++ much (I try to stick to the easier stuff like Java and VB.NET), but the lately I have not had a choice. When I am picking a project type in VS for some C++ source I download, what project type should I pick? I had just been sticking with Win32 Console Applications, but I just downloaded some code (below) that will not work right even when it compiles with out errors. I have tried to use a CLR Console Application and an empty project too, and have changed many variables along the way, but I cannot get this code to work. I noticed that this code does not have "int main()" at its beginning, does that have something to do with it? Anyways, here is 开发者_高级运维the code, got it from here:
/* Demo of modified Lucas-Kanade optical flow algorithm.
See the printf below */
#ifdef _CH_
#pragma package <opencv>
#endif
#ifndef _EiC
#include "cv.h"
#include "highgui.h"
#include <stdio.h>
#include <ctype.h>
#endif
#include <windows.h>
#define FULL_IMAGE_AS_OUTPUT_FILE
#define cvMirror cvFlip
//IplImage *image = 0, *grey = 0, *prev_grey = 0, *pyramid = 0, *prev_pyramid = 0, *swap_temp;
IplImage **buf = 0;
IplImage *image1 = 0;
IplImage *imageCopy=0;
IplImage *image = 0;
int win_size = 10;
const int MAX_COUNT = 500;
CvPoint2D32f* points[2] = {0,0}, *swap_points;
char* status = 0;
//int count = 0;
//int need_to_init = 0;
//int night_mode = 0;
int flags = 0;
//int add_remove_pt = 0;
bool bLButtonDown = false;
//bool bstopLoop = false;
CvPoint pt, pt1,pt2;
//IplImage* img1;
FILE* FileDest;
char* strImageDir = "E:\\Projects\\TSCreator\\Images";
char* strItemName = "b";
int imageCount=0;
int bFirstFace = 1; // flag for first face
int mode = 1; // Mode 1 - Haar Traing Sample Creation, 2 - HMM sample creation, Mode = 3 - Both Harr and HMM.
//int startImgeNo = 1;
bool isEqualRation = false; //Weidth to height ratio is equal
//Selected Image data
IplImage *selectedImage = 0;
int selectedX = 0, selectedY = 0, currentImageNo = 0, selectedWidth = 0, selectedHeight= 0;
CvRect selectedROI;
void saveFroHarrTraining(IplImage *src, int x, int y, int width, int height, int imageCount);
void saveForHMMTraining(IplImage *src, CvRect roi,int imageCount);
// Code for draw ROI Cropping Image
void on_mouse( int event, int x, int y, int flags, void* param )
{
char f[200];
CvRect reg;
if( !image )
return;
if( event == CV_EVENT_LBUTTONDOWN )
{
bLButtonDown = true;
pt1.x = x;
pt1.y = y;
}
else if ( event == CV_EVENT_MOUSEMOVE ) //Draw the selected area rectangle
{
pt2.x = x;
pt2.y = y;
if(bLButtonDown)
{
if( !image1 )
{
/* allocate all the buffers */
image1 = cvCreateImage( cvGetSize(image), 8, 3 );
image1->origin = image->origin;
points[0] = (CvPoint2D32f*)cvAlloc(MAX_COUNT*sizeof(points[0][0]));
points[1] = (CvPoint2D32f*)cvAlloc(MAX_COUNT*sizeof(points[0][0]));
status = (char*)cvAlloc(MAX_COUNT);
flags = 0;
}
cvCopy( image, image1, 0 );
//Equal Weight-Height Ratio
if(isEqualRation)
{
pt2.y = pt1.y + (pt2.x-pt1.x);
}
//Max Height and Width is the image width and height
if(pt2.x>image->width)
{
pt2.x = image->width;
}
if(pt2.y>image->height)
{
pt2.y = image->height;
}
CvPoint InnerPt1 = pt1;
CvPoint InnerPt2 = pt2;
if ( InnerPt1.x > InnerPt2.x)
{
int tempX = InnerPt1.x;
InnerPt1.x = InnerPt2.x;
InnerPt2.x = tempX;
}
if ( pt2.y < InnerPt1.y )
{
int tempY = InnerPt1.y;
InnerPt1.y = InnerPt2.y;
InnerPt2.y = tempY;
}
InnerPt1.y = image->height - InnerPt1.y;
InnerPt2.y = image->height - InnerPt2.y;
CvFont font;
double hScale=1.0;
double vScale=1.0;
int lineWidth=1;
cvInitFont(&font,CV_FONT_HERSHEY_SIMPLEX|CV_FONT_ITALIC, hScale,vScale,0,lineWidth);
char size [200];
reg.x = pt1.x;
reg.y = image->height - pt2.y;
reg.height = abs (pt2.y - pt1.y);
reg.width = InnerPt2.x -InnerPt1.x;
//print width and heght of the selected reagion
sprintf(size, "(%dx%d)",reg.width, reg.height);
cvPutText (image1,size,cvPoint(10,10), &font, cvScalar(255,255,0));
cvRectangle(image1, InnerPt1, InnerPt2, CV_RGB(255,0,0), 1);
//Mark Selected Reagion
selectedImage = image;
selectedX = pt1.x;
selectedY = pt1.y;
selectedWidth = reg.width;
selectedHeight = reg.height;
selectedROI = reg;
//Show the modified image
cvShowImage("HMM-Harr Positive Image Creator",image1);
}
}
else if ( event == CV_EVENT_LBUTTONUP )
{
bLButtonDown = false;
// pt2.x = x;
// pt2.y = y;
//
// if ( pt1.x > pt2.x)
// {
// int tempX = pt1.x;
// pt1.x = pt2.x;
// pt2.x = tempX;
// }
//
// if ( pt2.y < pt1.y )
// {
// int tempY = pt1.y;
// pt1.y = pt2.y;
// pt2.y = tempY;
//
// }
//
//reg.x = pt1.x;
//reg.y = image->height - pt2.y;
//
//reg.height = abs (pt2.y - pt1.y);
////reg.width = reg.height/3;
//reg.width = pt2.x -pt1.x;
////reg.height = (2 * reg.width)/3;
#ifdef FULL_IMAGE_AS_OUTPUT_FILE
CvRect FullImageRect;
FullImageRect.x = 0;
FullImageRect.y = 0;
FullImageRect.width = image->width;
FullImageRect.height = image->height;
IplImage *regionFullImage =0;
regionFullImage = cvCreateImage(cvSize (FullImageRect.width, FullImageRect.height),
image->depth, image->nChannels);
image->roi = NULL;
//cvSetImageROI (image, FullImageRect);
//cvCopy (image, regionFullImage, 0);
#else
IplImage *region =0;
region = cvCreateImage(cvSize (reg.width, reg.height),
image1->depth, image1->nChannels);
image->roi = NULL;
cvSetImageROI (image1, reg);
cvCopy (image1, region, 0);
#endif
//cvNamedWindow("Result", CV_WINDOW_AUTOSIZE);
//selectedImage = image;
//selectedX = pt1.x;
//selectedY = pt1.y;
//selectedWidth = reg.width;
//selectedHeight = reg.height;
////currentImageNo = startImgeNo;
//selectedROI = reg;
/*if(mode == 1)
{
saveFroHarrTraining(image,pt1.x,pt1.y,reg.width,reg.height,startImgeNo);
}
else if(mode == 2)
{
saveForHMMTraining(image,reg,startImgeNo);
}
else if(mode ==3)
{
saveFroHarrTraining(image,pt1.x,pt1.y,reg.width,reg.height,startImgeNo);
saveForHMMTraining(image,reg,startImgeNo);
}
else
{
printf("Invalid mode.");
}
startImgeNo++;*/
}
}
/*
Save popsitive samples for Harr Training.
Also add an entry to the PositiveSample.txt with the location of the item of interest.
*/
void saveFroHarrTraining(IplImage *src, int x, int y, int width, int height, int imageCount)
{
char f[255] ;
sprintf(f,"%s\\%s\\harr_%s%d%d.jpg",strImageDir,strItemName,strItemName,imageCount/10, imageCount%10);
cvNamedWindow("Harr", CV_WINDOW_AUTOSIZE);
cvShowImage("Harr", src);
cvSaveImage(f, src);
printf("output%d%d \t ", imageCount/10, imageCount%10);
printf("width %d \t", width);
printf("height %d \t", height);
printf("x1 %d \t", x);
printf("y1 %d \t\n", y);
char f1[255];
sprintf(f1,"%s\\PositiveSample.txt",strImageDir);
FileDest = fopen(f1, "a");
fprintf(FileDest, "%s\\harr_%s%d.jpg 1 %d %d %d %d \n",strItemName,strItemName, imageCount, x, y, width, height);
fclose(FileDest);
}
/*
Create Sample Images for HMM recognition algorythm trai ning.
*/
void saveForHMMTraining(IplImage *src, CvRect roi,int imageCount)
{
char f[255] ;
printf("x=%d, y=%d, w= %d, h= %d\n",roi.x,roi.y,roi.width,roi.height);
//Create the file name
sprintf(f,"%s\\%s\\hmm_%s%d.pgm",strImageDir,strItemName,strItemName, imageCount);
//Create storage for grayscale image
IplImage* gray = cvCreateImage(cvSize(roi.width,roi.height), 8, 1);
//Create storage for croped reagon
IplImage* regionFullImage = cvCreateImage(cvSize(roi.width,roi.height),8,3);
//Croped marked region
cvSetImageROI(src,roi);
cvCopy(src,regionFullImage);
cvResetImageROI(src);
//Flip croped image - otherwise it will saved upside down
cvConvertImage(regionFullImage, regionFullImage, CV_CVTIMG_FLIP);
//Convert croped image to gray scale
cvCvtColor(regionFullImage,gray, CV_BGR2GRAY);
//Show final grayscale image
cvNamedWindow("HMM", CV_WINDOW_AUTOSIZE);
cvShowImage("HMM", gray);
//Save final grayscale image
cvSaveImage(f, gray);
}
int maina( int argc, char** argv )
{
CvCapture* capture = 0;
//if( argc == 1 || (argc == 2 && strlen(argv[1]) == 1 && isdigit(argv[1][0])))
// capture = cvCaptureFromCAM( argc == 2 ? argv[1][0] - '0' : 0 );
//else if( argc == 2 )
// capture = cvCaptureFromAVI( argv[1] );
char* video;
if(argc ==7)
{
mode = atoi(argv[1]);
strImageDir = argv[2];
strItemName = argv[3];
video = argv[4];
currentImageNo = atoi(argv[5]);
int a = atoi(argv[6]);
if(a==1)
{
isEqualRation = true;
}
else
{
isEqualRation = false;
}
}
else
{
printf("\nUsage: TSCreator.exe <Mode> <Sample Image Save Path> <Sample Image Save Directory> <Video File Location> <Start Image No> <Is Equal Ratio>\n");
printf("Mode = 1 - Haar Traing Sample Creation. \nMode = 2 - HMM sample creation.\nMode = 3 - Both Harr and HMM\n");
printf("Is Equal Ratio = 0 or 1. 1 - Equal weidth and height, 0 - custom.");
printf("Note: You have to create the image save directory in correct path first.\n");
printf("Eg: TSCreator.exe 1 E:\Projects\TSCreator\Images A 11.avi 1 1\n\n");
return 0;
}
capture = cvCaptureFromAVI(video);
if( !capture )
{
fprintf(stderr,"Could not initialize capturing...\n");
return -1;
}
cvNamedWindow("HMM-Harr Positive Image Creator", CV_WINDOW_AUTOSIZE);
cvSetMouseCallback("HMM-Harr Positive Image Creator", on_mouse, 0);
//cvShowImage("Test", image1);
for(;;)
{
IplImage* frame = 0;
int i, k, c;
frame = cvQueryFrame( capture );
if( !frame )
break;
if( !image )
{
/* allocate all the buffers */
image = cvCreateImage( cvGetSize(frame), 8, 3 );
image->origin = frame->origin;
//grey = cvCreateImage( cvGetSize(frame), 8, 1 );
//prev_grey = cvCreateImage( cvGetSize(frame), 8, 1 );
//pyramid = cvCreateImage( cvGetSize(frame), 8, 1 );
// prev_pyramid = cvCreateImage( cvGetSize(frame), 8, 1 );
points[0] = (CvPoint2D32f*)cvAlloc(MAX_COUNT*sizeof(points[0][0]));
points[1] = (CvPoint2D32f*)cvAlloc(MAX_COUNT*sizeof(points[0][0]));
status = (char*)cvAlloc(MAX_COUNT);
flags = 0;
}
cvCopy( frame, image, 0 );
// cvCvtColor( image, grey, CV_BGR2GRAY );
cvShowImage("HMM-Harr Positive Image Creator", image);
cvSetMouseCallback("HMM-Harr Positive Image Creator", on_mouse, 0);
c = cvWaitKey(0);
if((char)c == 's')
{
//Save selected reagion as training data
if(selectedImage)
{
printf("Selected Reagion Saved\n");
if(mode == 1)
{
saveFroHarrTraining(selectedImage,selectedX,selectedY,selectedWidth,selectedHeight,currentImageNo);
}
else if(mode == 2)
{
saveForHMMTraining(selectedImage,selectedROI,currentImageNo);
}
else if(mode ==3)
{
saveFroHarrTraining(selectedImage,selectedX,selectedY,selectedWidth,selectedHeight,currentImageNo);
saveForHMMTraining(selectedImage,selectedROI,currentImageNo);
}
else
{
printf("Invalid mode.");
}
currentImageNo++;
}
}
}
cvReleaseCapture( &capture );
//cvDestroyWindow("HMM-Harr Positive Image Creator");
cvDestroyAllWindows();
return 0;
}
#ifdef _EiC
main(1,"lkdemo.c");
#endif
If I put...
#include "stdafx.h"
int _tmain(int argc, _TCHAR* argv[])
{
return 0;
}
... before the previous code (and link it to the correct OpenCV .lib files) it compiles without errors, but does nothing at the command line. How do I make it work?
Try using New Project -> Visual C++ -> Win32 -> Win32 Console Application. You can take all the defaults to get a new .cpp file for the project, which will have a _tmain in it. Modify _tmain like this:
int maina( int argc, char** argv ); // add this
int _tmain(int argc, _TCHAR* argv[])
{
return maina(argc, argv); // call maina from here
}
and then set the project Properties -> Configuration Properties -> General -> Character Set from the default of "Use Unicode Character Set" to "Use Multi-Byte Character Set". (Until you change this, you'll get a compiler error on passing the _TCHAR*[] as a char**.)
Then just add your source file to the project unmodified, and see if you can get it to compile and link. Then run it from a console window without any args to see if you get those five prints worth of "Usage: ..." output.
(As I re-read your question I see you are using Win32 Console Application, so in this case it may just be Unicode vs. Multi-Byte Character Set that is giving you trouble.)
(Taking the defaults for a new project, you'll also need to select the added, existing source file, go to Properties -> Configuration Properties -> C/C++ -> Precompiled Headers -> Create/Use Precompiled Headers and set it to Not Using Precompiled Headers.)
When your c++ application starts, it searches for an
int main(int argc, char** argv)
function. However, in windows, this can take the form of
int _tmain(int argc, _TCHAR* argv[])
You can safely assume that both are equivalent, just written differently. When the application starts, it loads your _tmain, then returns 0, so you don't see any output, this is normal.
What you need is to rename int maina(...) to int _tmain(...)
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