从事人脸检测和识别工作,在成功检测到人脸后,我只想裁剪人脸并将其保存在驱动器中的某个位置以提供识别码。我很难将感兴趣的区域保存为新图像。我在网上有一些代码,但它是用以前版本的 OpenCV 编写的,它使用IplImage*
. 我正在使用 OpenCV 2.4.2,它使用cv::Mat
.
嘻嘻!!!
如果你们想要的话,我会发布我的代码(人脸检测和识别本身)。
#include <cv.h>
#include <highgui.h>
#include <math.h>
// alphablend <imageA> <image B> <x> <y> <width> <height>
// <alpha> <beta>
IplImage* crop( IplImage* src, CvRect roi)
{
// Must have dimensions of output image
IplImage* cropped = cvCreateImage( cvSize(roi.width,roi.height), src->depth, src->nChannels );
// Say what the source region is
cvSetImageROI( src, roi );
// Do the copy
cvCopy( src, cropped );
cvResetImageROI( src );
cvNamedWindow( "check", 1 );
cvShowImage( "check", cropped );
cvSaveImage ("style.jpg" , cropped);
return cropped;
}
int main(int argc, char** argv)
{
IplImage *src1, *src2;
CvRect myRect;
// IplImage* cropped ;
src1=cvLoadImage(argv[1],1);
src2=cvLoadImage(argv[2],1);
{
int x = atoi(argv[3]);
int y = atoi(argv[4]);
int width = atoi(argv[5]);
int height = atoi(argv[6]);
double alpha = (double)atof(argv[7]);
double beta = (double)atof(argv[8]);
cvSetImageROI(src1, cvRect(x,y,width,height));
cvSetImageROI(src2, cvRect(100,200,width,height));
myRect = cvRect(x,y,width,height) ;
cvAddWeighted(src1, alpha, src2, beta,0.0,src1);
cvResetImageROI(src1);
crop (src1 , myRect);
cvNamedWindow( "Alpha_blend", 1 );
cvShowImage( "Alpha_blend", src1 );
cvWaitKey(0);
}
return 0;
}
谢谢。和平