MATLAB: Function that removes object when touching border? – Image/ Video processing

bordersimage processingImage Processing Toolboxvideo processing

Greeting,

Hello everyone, I just want to ask if there is a function in matlab where when the object touches the border of the camera or image, it will be deleted from the image? Like after I process my image, when the white part of the object was in contact with the border, I want to remove that part entirely. Thank you.

Regards, Akira

Best Answer

Yes, it's called imclearborder():

binaryImage = imclearborder(binaryImage);

You can specify either 4 or 8 connectivity if you want via the second input argument.

Related Solutions

MATLAB: How to remove objects close to image border

Sorry - I was sleeping, hence the delay on my part.

Simply crop the image with imcrop(), then call imclearborder(), then pad with padarray():

margin = 50; % Whatever
croppedImage = imcrop(binaryImage, [margin, margin, columns - 2 * margin, rows - 2 * margin]);
binaryImage = imclearborder(croppedImage);
binaryImage = logical(padarray(binaryImage, margin));

MATLAB: Figure without border

fh = figure('Menu','none','ToolBar','none'); 
ah = axes('Units','Normalize','Position',[0 0 1 1])

ADDENDUM

If you're using axis square you'll need to make sure the figure position is also square. Here's a demo following the block above:

plot(rand(1000,1),rand(1000,1),'ko')
axis(ah, 'square')
fh.Position(3) = fh.Position(4);  %set width equal to height

Best Answer

Related Solutions

MATLAB: How to remove objects close to image border

MATLAB: Figure without border

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