Image background subtraction using parallel computing

Question

I am developing a program for pattern recognition. I want to use the parallel computing to get a real time application.

I have two cameras where each one gives n frames/second. I need to process the data given by both cameras (i.e background subtraction) in the same time using the parallel computing as shown in the image:

I can use ImageSubtract[] or ImageDifference[] for background subtraction. So the question is how I can Evaluate two functions (i.e ImageSubtract with different inputs) in the same time?

Which package is used on Mathematica for parallel computing? Any suggestions?

Answer 1

We can try like this:

Parallelize[MapThread[ImageSubtract, {{image1,image2}, {fond1,fond2}}]]

or

ParallelTry[imageSubtract, {{imag1, fond1}, {imag2, fond2}}, 2]

While

imageSubtract[{image_,fond_}]:=Module[{},(

Image[(ImageData[image1]-ImageData[fond1]+1)/2]
)]

We can use also ParallelMap[]

ParallelMap[imageSubtract, {{imag1, fond1}, {imag2, fond2}}, 2]

I remark that Parallelize is faster than ParallelTry[] and the ParallelTry[] is faster than ParallelMap[] Any deep explanation about this? And it is possible to define imageSubtract[image1,fond1] and used it with ParallelTry[] and ParallelMap[] or I must to define it with one argument?