Image Processing ( calculate perimeter)

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Prashan
Prashan 2011-4-7
just doing an image processing application at the moment for hand therapy system .. Is it possible to measure the perimeter or area of this image ( the hand ) by using any method im new to matlab. http://www.flickr.com/photos/60171113@N05/5597154717/ thanks
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Sean de Wolski
Sean de Wolski 2011-4-7
Are the images with the blue background your starting images?
Ps. Well written question with sample images provided. +1!

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回答（3 个）

David Young
David Young 2011-4-7
If you have the Image Processing Toolbox, have a look at using morphology operations to simplify the binary image into one blob. The 'close' option of bwmorph might be a good starting point.
Then to get the measurement, try the 'Perimeter' and 'Area' options of regionprops.
Prashan
Prashan 2011-4-7
working on this now thank you for the support will keep you posted
Prashan
Prashan 2011-4-9
so far i managed to get to this point how do i now calculate the perimter of this hand . ive got the left image using bmarea and the one on the left is when the image is closed. http://www.flickr.com/photos/60171113@N05/5602943214/ thank u
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David Young
David Young 2011-4-11
Prashan, it's better to comment on my answer rather than give extra answers. Anyway, your image looks good - you should be able to get the perimeter easily using regionprops, with 'Perimeter' as the required property.

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