opencv - In C, given an image containing numbers, how do I extract each individual number into a separate image? -

as example. suppose image contains number 1 , 2 in black. background white. want end 2 new files 1 contains number 1 , other contains number 2. have been playing around sift in opencv, being complete novice @ image processing, need guidance. appreciated.

try connected components analysis. can divide image based on these areas. see here