How to smoothen the edges?

In the following Hand Image, How to smooth the edges in the indicated region?

Answer 1

[Nitin]

You might check some morphological operations you could perform on the image such as imfill and imdilate

[Sabarinathan Vadivelu]

Thank you Nithin. I had smoothened the Image first using Median Filter and thresholded usig Otsu's Algorithm and Applied Morphological Operations. Got the required output.

[gilad divon]

can you please write what morphological operations did you use?

Answer 2

[Image Analyst]

You can try activecontour(), such as is shown in my example, attached.

[Sabarinathan Vadivelu]

I have all your demos. Thanks for your assistance.

[Image Analyst]

I doubt it. You have some. I have well over a hundred of them.