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 | 1 | initial version |
The img32bit.data is a generic pointer to the image data. Its content depends on the image type. Just cast it to the desired type to use it. For example if it's float (CV_32FC1):
int imW = img32bit.cols;
float *ptrF = (float*)img32bit.data;
float pix1015 = *(ptrF+10*imW+15); //get the value of pixel (10,15)
For 8 bit RGB images:
Vec3b *ptrRGB = (Vec3b*)imgRGB.data;
*(ptrRGB+15*imW+20) = Vec3b(0,255,255); //set pixel (15,20) to yellow
| | 2 | No.2 Revision |
The img32bit.data is a generic pointer to the image data. Its content depends on the image type. Just cast it to the desired type to use it. For example if it's float (CV_32FC1):
int imW = img32bit.cols;
float *ptrF = (float*)img32bit.data;
float pix1015 = *(ptrF+10*imW+15); //get the value of pixel (10,15)
pix1015 = img32bit.at<float>(10,15); //same thing with at() function
For 8 bit RGB images:
Vec3b *ptrRGB = (Vec3b*)imgRGB.data;
*(ptrRGB+15*imW+20) = Vec3b(0,255,255); //set pixel (15,20) to yellow