taking input from two cameras at a same time in Matlab

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how can i use and take input from two cameras at the same time?

采纳的回答

David Tarkowski
David Tarkowski 2011-5-11
In general working with two cameras is the same as working with a single camera. You create a videoinput object for each device that you wish to capture from and the call start on each device:
vid1 = videoinput('winvideo', 1);
vid2 = videoinput('winvideo', 2);
start([vid1 vid2]);
These devices will be started at roughly the same time, but will not by synchronized due to delays imposed by the operating system and drivers in actually starting them. To synchronize multiple devices precisely, you generally need to use devices that support hardware triggering.
  5 个评论
Tiago
Tiago 2013-2-15
I did like this:
vid1 = videoinput('linuxvideo',1);
vid2 = videoinput('linuxvideo',2);
handles.axes1 = subplot(1,2,1);
axes(handles.axes1);
handleToImageInAxes1 = image(zeros(800,600));
preview(vid1, handleToImageInAxes1);
handles.axes2 = subplot(1,2,2);
axes(handles.axes2);
handleToImageInAxes2 = image(zeros(800,600));
preview(vid2, handleToImageInAxes2);
and still the same error at the second preview. Any idea?

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更多回答(3 个)

Hassan Mehmood Khan
i did this to get snapshot from two cams at same time:
% webcamlist identification
clc;
clearvars;
webcamlist
cam=webcam;
cam2=webcam(2);
cam.AvailableResolutions;
cam2.AvailableResolutions;
cam.Resolution='640x480';
cam2.Resolution='640x480';
% preview(cam);
% preview(cam2);
img=snapshot(cam);
img2=snapshot(cam2);
img3=snapshot(cam);
img4=snapshot(cam2);
figure;
subplot(3,3,1);
imshow(img3);
subplot(3,3,2);
imshow(img4);
output
ans =
'Webcam C170'
'Logitech HD Webcam C270'

Andrei Ursache
Andrei Ursache 2018-6-2
Also refer to the following example which uses Parallel Computing Toolbox with Image Acquisition Toolbox

Walter Roberson
Walter Roberson 2011-5-9

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