OpenCV显示图像帧率过低
我编译了一个测试程序,用来从相机的连续模式中获取图像数据并显示出来,图像取出来是正确的,但是帧率很慢,每秒只有5帧左右,把图像显示的代码注释掉之后,帧率提升极大,达到每秒50帧左右,我测试用的库是opencv2.4.9,图像的数据结构是8位1通道,图像尺寸是1920*1080,相机的借口是USB3.0,传输协议用的是libusb-1.0的库,测试用的MacBook,下面是我的测试程序的图像获取和显示部分。
ret = BeginLive(camhandle);
if(ret == SUCCESS)
{
printf("BeginLive success!\n");
//cvNamedWindow("show",1);
while(ret == SUCCESS)
{
while(ret_live == ERROR){
ret_live = GetLiveFrame(camhandle,&w,&h,&bpp,&channels,ImgData);
}
//image = cvCreateImage(cvSize(w,h),bpp,channels);
//image->imageData = (char *)ImgData;
//cvShowImage("show",image);
//cvWaitKey(1);
ret_live = ERROR;
fps++;
t_end = time(NULL);
if(t_end - t_start >= 1){
t_num ++;
if(t_num % 5 == 0){
printf("Time pass:%3d | Frame rate:%5.1f\n",t_num,(float)fps/5);
fps = 0;
}else
printf("Time pass:%3d | bpp = %d channels = %d\n",t_num,bpp,channels);
t_start = time(NULL);
}
if(t_num >= 120)
{
//break;
ret = ERROR;
}
}
//cvDestroyWindow("show");
//cvReleaseImage(&image);
}