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Conversion to binary Image

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pratibha rane
pratibha rane 2013-4-9
Hi, I have grayscale image of the person(output of mixture of gaussian method) with background(also shows shadow effect),I want to convert it into Binary image such that persons body in white and background in black.How can I do? Is there readymade code.Please reply.
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pratibha rane
pratibha rane 2013-4-9
Input image is as shown in- http://snag.gy/WSDpR.jpg, which is output of mixture of gaussian method, This image I wanna to convert into binary image with human body in white and background in black
pratibha rane
pratibha rane 2013-4-9
How do i remove noise that may be because of shadow.So that I will get proper binary image.Thanks

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回答（2 个）

Walter Roberson
Walter Roberson 2013-4-9
bwareaopen() http://www.mathworks.com/help/images/ref/bwareaopen.html to remove a fair bit of the noise (but probably not all.)
To go further than that, you are going to need to close the border of the figure at the bottom edge. I have a couple of guesses about what might work for that, but I do not have the toolbox to experiment with.
Image Analyst
Image Analyst 2013-4-9
What do you need? Really need? Because it may be possible to do what you want to do, like detect if a person is there or is moving, without actually getting the same outline as if you had hand-traced it. Why can't you just threshold and take the largest blob?
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Walter Roberson
Walter Roberson 2013-4-10
What will you do with the posture image?
pratibha rane
pratibha rane 2013-4-10
output after thresholding-http://snag.gy/1wB2y.jpg.I don't want output this way

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