Hi All,
I am new to processing so please forgive my ignorance. After countless google searches and help from my peers I havent been able to convert coding for Windows to run successfully on my Mac. If anyone knows how to work both platforms please let me know what the difference between the two is so I can go about fixing it.
Here is the code I am trying to convert:
#include "cv.h"
#include "highgui.h"
IplImage* GetThresholdedImage(IplImage* img)
{
// Convert the image into an HSV image
IplImage* imgHSV = cvCreateImage(cvGetSize(img), 8, 3);
cvCvtColor(img, imgHSV, CV_BGR2HSV);
IplImage* imgThreshed = cvCreateImage(cvGetSize(img), 8, 1);
cvInRangeS(imgHSV, cvScalar(20, 100, 100), cvScalar(30, 255, 255), imgThreshed);
cvReleaseImage(&imgHSV);
return imgThreshed;
}
int main()
{// Initialize capturing live feed from the camera
CvCapture* capture = 0;
capture = cvCaptureFromCAM(0);
// Couldn't get a device? Throw an error and quit
if(!capture)
{
printf("Could not initialize capturing... ");
return -1;
}
// The two windows we'll be using
cvNamedWindow("video");
cvNamedWindow("thresh");
// An infinite loop
while(true)
{
// Will hold a frame captured from the camera
IplImage* frame = 0;
frame = cvQueryFrame(capture);
// If we couldn't grab a frame... quit
if(!frame)
break;
// If this is the first frame, we need to initialize it
if(imgScribble == NULL)
{
imgScribble = cvCreateImage(cvGetSize(frame), 8, 3);
}
// Holds the yellow thresholded image (yellow = white, rest = black)
IplImage* imgYellowThresh = GetThresholdedImage(frame);
// Calculate the moments to estimate the position of the ball
CvMoments *moments = (CvMoments*)malloc(sizeof(CvMoments));
cvMoments(imgYellowThresh, moments, 1);
// The actual moment values
double moment10 = cvGetSpatialMoment(moments, 1, 0);
double moment01 = cvGetSpatialMoment(moments, 0, 1);
double area = cvGetCentralMoment(moments, 0, 0);
// Holding the last and current ball positions
static int posX = 0;
static int posY = 0;
int lastX = posX;
int lastY = posY;
posX = moment10/area;
posY = moment01/area;
// Print it out for debugging purposes
printf("position (%d,%d) ", posX, posY);
// We want to draw a line only if its a valid position
if(lastX>0 && lastY>0 && posX>0 && posY>0)
{
// Draw a yellow line from the previous point to the current point
cvLine(imgScribble, cvPoint(posX, posY), cvPoint(lastX, lastY), cvScalar(0,255,255), 5);
}
// Add the scribbling image and the frame...
cvAdd(frame, imgScribble, frame);
cvShowImage("thresh", imgYellowThresh);
cvShowImage("video", frame);
// Wait for a keypress
int c = cvWaitKey(10);
if(c!=-1)
{
// If pressed, break out of the loop
break;
}
// Release the thresholded image+moments... we need no memory leaks.. please
cvReleaseImage(&imgYellowThresh);
delete moments;
}
// We're done using the camera. Other applications can now use it
cvReleaseCapture(&capture);
return 0;
}
