How can I resize an image with OpenCV ?

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if you use opencv2,you can do like this:

Size size(100,100);//the dst image size,e.g.100x100
Mat dst;//dst image
Mat src;//src image
resize(src,dst,size);//resize image
 

Hi. Take a look at the resize function in the OpenCV documentation. It contains a description of the function and a small example.

You can use it to resize the image:

IplImage* resizing (IplImage *source) {

IplImage *destination = cvCreateImage ( cvSize(Your favourite width , Your favourite height ), source->depth, source>nChannels );


cvResize(source, destination);

return destination;

}