MATLAB: How to speed up the image acquisition routine in Image Acquisition Toolbox 1.9 (R14SP3)

Question

I am unable to acquire images from Image Acquisition Toolbox quickly enough for real-time processing. I use a loop of the form:

for indx=1:1000
      % read the next frame
      start(vid);
      wait(vid);
      fdat = getdata(vid);
      % Process the data
end

Answer 1

In order to improve the speed of an image acquisition routine, execute the following steps:

1. Set the Trigger Mode to 'Manual' before starting the video acquisition.

triggerconfig(vid,'manual');

2. Set the number of triggers to be executed to infinity if you plan on acquiring an indefinite number of frames.

set(vid,'TriggerRepeat',inf);

3. Start the acquisition only once outside the loop (This is the time-consuming part of the process)

start(vid);

4. Use the less time-consuming TRIGGER function to acquire frames inside the loop.

trigger(vid);
fdat = getdata(vid);