MATLAB: Jpg image capture using webcam in matlab gui

jpg capture guiwebcam in matlab gui

I built a gui wherein i can view a runtime video and capture image using data on http://www.mathworks.in/support/solutions/en/data/1-1CBPW/

using the code on the link image is saved in .mat format whereas I require it in .jpg format.

I tried replacing 'testframe.mat' by 'testframe.jpg' in the captureImage_Callback(hObject, eventdata, handles) function but it doesnt work,although file "testframe.jpg" is saved in the workspace it doesnt open

how can I save the frame in jpg format

Best Answer

Use imwrite() or saveas() or print()

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MATLAB: Image Acquisition using a GUI

Thank you image Analyst for the fast replay but i think that i found the solution to my problem :)!

instead of using

capt1 = getdata(vid);

i used

capt1 = getdata(vid,1,'uint8');

because getdata(vid) will get the data as uint 16 by default and jpg works with uint8 so we have to specify that

MATLAB: Converting CMYK JPG to RGB JPG

Hi Jacob, the first input to the 'applycform' function needs to be a matrix of the image data, rather than the path to the file itself. You are passing in a character vector for that argument, so the function assumes that you are using a named color profile, and errors out accordingly since the encoding 'C' from 'makecform' does not match.

Since 'imread' does not support CMYK JPG files in the first place, this puts us in a tricky situation. What you really need to do, is perform the conversion before being able to work with it at all in MATLAB. There are third-party tools that would allow you to do this conversion.

Best Answer

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MATLAB: Image Acquisition using a GUI

MATLAB: Converting CMYK JPG to RGB JPG

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