Measuring the Frame rate for object detection using webcam Raspburry

Hi Guys

I am looking for measuring the frame rate per second for object detection using R-CNN using webcam Raspburry

code is

 detector= load ('detector.mat');
  r = raspi;
  w = webcam(r);
   
   for k = 1:100000000000000000
       img = snapshot(w);
       img=imresize(img,[640,480]);
[bbox,score] = detect(detector.detector,img,'MiniBatchSize', 128);
detectedImg = insertObjectAnnotation(img,'rectangle',bbox,score);
displayImage(r,detectedImg,'Title','detectedImg');
   end