IMAQ Extract vs. IMAQ Copy

[DarkLordOfG]

Hello all,

I am benchmarking the performance of IMAQ Extract vs. IMAQ Copy.  To my surprise the IMAQ Extract takes 3-4 times longer to execute even though it is essentially copying less pixels.   Here is the result:  Any thoughts?

[df86]

if you have a large chunk of contiguous memory, with respect to you image size, available so the memory manager doesn't spend much time looking for open memory space I don't see why copying an  image should take long. You are simply copying the data from a pointer into RAM. If you enlarge the image size significatnly and create a controlled memory leak you might get completely different results.