释放OpenCV::VideoCapture的内存(或正确使用cvRelease)
Release memory of OpenCV::VideoCapture (or using cvRelease correctly)
我正在做这个例子。我遇到的问题是应用程序的内存消耗,它从180 mb左右开始,在30秒内达到1.5 gb。
void VideoCaptureCV::update()
{
cap >> frame; // cap is cv::VideoCapture
if(_img == 0)
{
_img = new CvMat(frame);
}
CvArr *arr = _img;
CvMat *arrMat, *cvimage, stub;
arrMat = cvGetMat(arr, &stub);
cvimage = cvCreateMat(arrMat->rows, arrMat->cols, CV_8UC3);
cvConvertImage(arrMat, cvimage, 0);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, tex_uid);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, cvimage->cols, cvimage->rows,0, GL_BGR, GL_UNSIGNED_BYTE, cvimage->data.ptr);
glBindTexture(GL_TEXTURE_2D, 0);
glDisable(GL_TEXTURE_2D);
w = cvimage->cols;
h = cvimage->rows;
// non of the following works correctly, it sends
// exception: cv::Exception at memory location
//cvRelease(&arr);
//cvReleaseMat(&arrMat);
//cvReleaseMat(&cvimage);
//cvReleaseMat(&stub);
}
你知道如何正确使用cvRelease吗?
编辑1:添加了使用cvRelease 时的错误发送
if(_img == 0)
{
_img = new CvMat(frame);
}
CvArr *arr = _img;
这是怎么编译的?
您不需要用openCV映像调用new
,它们将为您处理内存管理,只需在堆栈上本地创建映像,并让openCV清理