Opencv 2.4.3 如何将 IPL_DEPTH_8U 转换为 IPL_DEPTH_32F？

Question

char* filename1="1.bmp";  
IplImage* greyLeftImg= cvLoadImage(filename1,0);
char* filename2="2.bmp";
IplImage* greyRightImg= cvLoadImage(filename2,0); 

IplImage* greyLeftImg32=cvCreateImage(cvSize(width,height),32,greyLeftImg->nChannels);//IPL_DEPTH_32F 
IplImage* greyRightImg32=cvCreateImage(cvSize(width,height),32,greyRightImg->nChannels);

总是失败，说“断言失败(src.size == dst.size && dst.type() == CV_8UC(src.channels())) in unknown function”

我找了很多方法，但似乎都没有用？

Answer 1

将 opencv 中的任何灰度 8 位或 16 位 uint 图像转换为 32 位浮点类型的简单步骤如下...

IplImage* img = cvLoadImage( "E:\\Work_DataBase\\earth.jpg",0);
IplImage* out = cvCreateImage( cvGetSize(img), IPL_DEPTH_32F, img->nChannels);

double min,max;

cvMinMaxLoc(img,&min,&max);

// Remember values of the floating point image are in the range of 0 to 1, which u 
// can't visualize by cvShowImage().......
cvCvtScale(img,out,1/ max,0);

希望这是简单的方法...