我跟踪两个对象,并希望在它们彼此相距 100 以内时保存帧。我使用以下方法测量距离:
bool bSavePic = false;
void example{
int x1,y1,x2,y2;
int distance; //distance between two objects
if(initialMarkers.size()>1){
x1 = initialMarkers.at(0).getXPos();
y1 = initialMarkers.at(0).getYPos();
x2 = initialMarkers.at(1).getXPos();
y2 = initialMarkers.at(1).getYPos();
distance = (int)sqrt((double)((x2-x1)*(x2-x1) + (y2-y1)*(y2-y1)));
cv::putText(cameraFeed,intToString(distance),cv::Point(50,50),1,1,Scalar(255,0,0));
if (distance < 100 )
{
bSavePic= true;
}else{
bSavePic= false;
}
}
我遇到的问题是,当它们彼此相距 100 以内时,以下代码输出视频流,然后在标记距离再次大于 100 时保存帧。
if (bSavePic == true)
{
putText(cameraFeed,"Saving Image",Point(50,70),1,1,Scalar(0,0,255),1);
waitKey(10);
capture >> saveImage;
}
char buffer[1000];
for(int c=0; c<1; c++)
{
sprintf(buffer,"C:\Users\Scott\Documents\Visual Studio 2010\Projects\MultipleObjectTracking\Image-%d.jpg",c);
imwrite(buffer, saveImage);
}
if(!saveImage.empty())
{
Mat readImage;
readImage = imread(buffer,CV_LOAD_IMAGE_COLOR);
imshow(windowName4, readImage);
}
关于如何在距离小于 100 时保存第一帧并在距离超出 100 并返回范围时才保存另一帧的任何建议?
注意c<1
因为它在距离小于 100 时保存每一帧。
我用
bool bSingleFrame = true;
int main{
if (bSavePic == true)//distance<100
{
if (bSingleFrame == true)
{
putText(cameraFeed,"Saving Image",Point(50,70),1,1,Scalar(0,0,255),1);
Mat saveImage;
capture >> saveImage;
stringstream ssFileName; //string stream initialised through each passing of while loop
ssFileName << "Image-" << c << ".jpg"; //File name based on frame captured 0++
ssFileName >> sFileName;
if(!saveImage.empty()) //check if frame captured is stored in matrix
{
cout << "Frame captured." << endl; //if data in frame cout
imwrite(sFileName.c_str(), saveImage); //save frame
saveImage.release();
c++;
if (bSavePic == true) //if distance still <100
{
bSingleFrame = false;
}
Mat readImage;
readImage = imread(sFileName.c_str(),CV_LOAD_IMAGE_COLOR);
imshow(windowName4, readImage); //show captured frame in new window
}else{
cout << "Error, could not capture frame to save." << endl;
}//if(!saveImage.empty())
}//bSingleFrame
}//ifbSavePic
if (bSavePic == false)
{
bSingleFrame = true;//if distance back >100 can capture another frame
}
}
请注意,这只是一个片段。但它做到了需要的东西。