How to get smoothed edges afeter background removal ?

How to get smoothed edges afeter background removal ? from below file exchange ?

https://in.mathworks.com/matlabcentral/fileexchange/73804-image-background-removal-by-user-hand

My resutlts :

[KALYAN ACHARJYA]

There complete background is not yet remove. After only you should proceed for make smooth boundary.

Answer 1

[Image Analyst]

Take your binary image and smooth it then threshold at 0.5 and apply it.

windowSize = 9; % An odd number.  Bigger = more smoothing.
kernel = ones(windowSize)/windowSize^2;
blurryMask = conv2(mask, kernel, 'same') > 0.5;
% Mask the image using bsxfun() function to multiply the mask by each channel individually.
maskedRgbImage = bsxfun(@times, rgbImage, cast(blurryMask, 'like', rgbImage));