How can a video input object be used to acquire images as rapidly as the preview function

I am using an allied vision GigE GT4905 with the GenTL transport layer. The sensor is configured to Mono14 and full frame (3264x4896). When using the preview function in the Image Acquisition Tool, images are displayed at approximately 3.5fps. However, using the getsnapshot function at the command line only returns images at 0.6fps. How can I acquire images from the videoinput object at the command line as rapidly as the preview function does in the Image Acquisition Tool?

Answer 1

[Urmila Rajpurohith]

Hi

Try using "VideoReader" for reading and previewing pre recorded mp4 file. I am attaching a snippet from the documentation that does the same.

v = VideoReader('xylophone.mp4');
currAxes = axes;
while hasFrame(v)
    vidFrame = readFrame(v);
    image(vidFrame, 'Parent', currAxes);
    currAxes.Visible = 'off';
    pause(1/v.FrameRate);
end

Refer to the below documentation page for more information on "videoReader":

https://in.mathworks.com/help/matlab/ref/videoreader.html