MATLAB: How to detect and track a white object in a greyscale live Video

Computer Vision Toolboxdetect and track objects

Hello, can someone tell me where i can find an example for dectecting and tracking a object with a greyscale camera. Thanks a lot for help.

Best Answer

See my attached tracking video where I track a green object. It will be simple to modify it to a gray scale situation.

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MATLAB: How to track a moving object in a live camera

Hello Sivakumaran, check out http://blogs.mathworks.com/videos/2012/03/09/maltab-2012a-face-recognition/ and http://www.mathworks.com/help/vision/examples/face-detection-and-tracking.html to get started.

MATLAB: Convert live colour video into gray scale video

Hi,

You can modify your code like this to get the desired results.

CODE :

imaqreset; 
%warning('off','all'); %.... diable warining msg ...; 
vid = videoinput('winvideo',1, 'YUY2_640x480'); 
set(vid, 'FramesPerTrigger', Inf); 
set(vid, 'ReturnedColorspace', 'rgb'); 
% vid.FrameRate =30; 
vid.FrameGrabInterval = 1; % distance between captured frames 
start(vid) 
aviObject = VideoWriter('myVideo.avi'); % Create a new AVI file 
open(aviObject); 
for iFrame = 1:50 % Capture 100 frames 
% ... 

% You would capture a single image I from your webcam here 
% ... 
I=getsnapshot(vid); 
%changes made here
grayimg = rgb2gray(I); % Convert rgb image to grayscale img 
%imshow(I); 
F = im2frame(grayimg); % Convert grayimg to a movie frame 
writeVideo(aviObject,F); % Add the frame to the AVI file 
end 
close(aviObject); % Close the AVI file 
stop(vid);

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Related Solutions

MATLAB: How to track a moving object in a live camera

MATLAB: Convert live colour video into gray scale video

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