centroid of an image

Please, I need help with Matlab code to center the upper half of a silhouette image with respect to its horizontal centroid(ie find the centroid of an image ), after which my output will still be in an image format. Thanks in anticipation.

Answer 1

[Walter Roberson]

Threshold the image into black and white, and then call regionprops on the black and white image to get the centroid property.

Note: if the black part is your information and the white part is background, then call regionprops on the logical negation of your black and white image,

regionprops(~BW,'centroid')  %or something similar

[kiki]

Thanks