MATLAB: Image Processing – How to remove big pixel object

bwareaopenimage processingMATLAB

I have remove small unwanted object however there are still some big pixel object I can't remove it.

How can I remove it?? (If I increase the 'bwareaopen', the whole image will become black)

Best Answer

I have no idea. If you remove both the small objects and large objects, what do you expect to remain? Are there medium sized objects that you hope to retain? Upload your binary image to tinypic.com so I can see it and tell me which objects you want to remove or keep.

Related Solutions

MATLAB: Removing the boundary objects

If you have the Image Processing Toolbox, the function imclearborder is what you want.

MATLAB: How can i remove object bigger than x pixel

Hi Lukasz,

Here's an example that removes all objects greater than 1000 pixels in area. You probably have your own BW image and your own threshold that you can use in a similar way.

I = imread('rice.png');
BW = I>80;
cc = bwconncomp(BW);
stats = regionprops(cc);
threshold = 1000;
removeMask = [stats.Area]>threshold;
BW(cat(1,cc.PixelIdxList{removeMask})) = false;

Did this help you out?

Thanks, Sven.

Best Answer

Related Solutions

MATLAB: Removing the boundary objects

MATLAB: How can i remove object bigger than x pixel

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