How to paint a particular area eg. t-shirt in a image without selecting it using android?

Im trying to change the color of a t-shirt in andro开发者_如何学JAVAid. The image contains a t-shirt with a background. I don't like to go for a png file.

I want to know how to find the edges of the t-shirt so that we can paint the particular area.

Is there any way to do it??

Thanks and Regards, Srinivasan

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You can try some algorithm of Edge detection. Look at this wiki.