MATLAB: Vcapg2

image acquisitionvcapg2webcam

does anyone know how to capture and save image from live webcam using vcapg2??

Best Answer

 i already get it...
 %For Camera Captured
%
cardum=vcapg2;
x=vcapg2;
imwrite (x,'cam1.jpg');
subplot(4,2,1);
imshow (x);
title('cam1');
 % Read Image
x = imread('cam1.jpg');
imshow(x);
subplot(4,2,2);
imwrite (x,'cam1.jpg');
title('Original Image');

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MATLAB: Unable to determine the file format from the file name.

output_dir = 'C:\Users\HITESH\Desktop\Matlab';
%%set up webcam
leftCam = imaq.VideoDevice('winvideo', 2, 'YUY2_640x480');
rightCam = imaq.VideoDevice('winvideo', 1, 'YUY2_640x480');
objects = imaqfind;
delete(objects)
%%leftCam = imaq.VideoDevice('winvideo', 2, 'YUY2_640x480');
%%rightCam = imaq.VideoDevice ('winvideo', 1, 'YUY2_640x480');
LeftCam.ReturnedDataType = 'uint8';
rightCam.ReturnedDataType = 'uint8';
%%take pictures
%Create initial figure window for fused images
leftImage = step(leftCam);
rightImage = step(rightCam);
dispImage = imfuse(leftImage, rightImage, 'montage');
hFuse = imshow(dispImage);
%Now loop through and capture images
count = 1;
for i = 1:1000
    leftImage = step(leftCam);
    rightImage = step(rightCam);
    dispIamge = imfuse(leftImage, rightImage, 'montage');
    if mod(i, 20) == 0
        imwrite(leftImage, fullfile(output_dir, sprintf('LeftCam%d.jpg', count)) );
        imwrite(leftImage, fullfile(output_dir, sprintf('RightCam%d.jpg', count)) );
        dispImage = zero(size(dispImage), 'like', dispIamge);
        count = count+1;
    end
    hFuse.CData = dispImage;
    drawnow;
end
%%Clean up
release(leftCam);
release(rightCam);
close all;

MATLAB: Error using imwrite command

The error message is clear: Either the file is existing already and you cannot overwrite it (maybe it is open in another program already), or you do not have write permissions in the current folder. What is the output of

cd

? Use a specified folder:

folder = tempdir;
...
      imwrite(A, fullfile(folder, ['133MC',num2str(i),'.jpg']));

Best Answer

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MATLAB: Unable to determine the file format from the file name.

MATLAB: Error using imwrite command

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