Increase frame rate of GigE camera by reducing image size

4 views (last 30 days)
Hi there,
I am running a prosilica gx 1050 camera for fast image acquisition. So far I can achieve the max frame rate of 112 fps at full image size (1024 by 1024), but I would like to increase this rate further by decreasing the frame size. AVT (the camera manufacturer) says that by decreasing the height of the image to 512 pixels, I should be able to attain a frame rate of about 170 fps. I did reduce the frame height to 512, but matlab still thinks the max frame rate is 112 and will not let me set anything faster. Here is my code:
numframes=5; %number of frames to record
exposuretime=2500; %exposure time, mirco s
packetsize=9014; %must be less than 9k
packetdelay=1E8; %in microseconds?
transrate=191095159; % must be less than 2 Gbps
camgain=0; %up to 34 dB
%create a video input object
disp('creating video object')
vid = videoinput('gige',1,datatype);
src = getselectedsource(vid);
triggerconfig(vid, 'Immediate');
%set long timeout to prevent getdata asking for frames before they are
%reduce the frame size
vid.ROIPosition = [0 0 512 512];
%set capture params
%start video object
disp('ready for capture')
data = getdata(vid);
disp([num2str(numframes) ' frames acquired'])
When I set numframes=170, I get a warning that the frame rate cannot exceed 112. When I check the value of AcquisitionFrameRateAbs, I see that Matlab has set it to 33 fps.
How do I get Matlab to increase the frame rate accordingly? Any help or tips are appreciated.
Thank you very much, Laurie

Answers (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by