Problem to center mi sprite head about posenet

[SteveJG]

I think your problem is how you calculate the 'center' of your sprite cabeza.
You probably should be subtracting for the y coordinate.
See the chart showing how the pixels are arranged in Creating Animated Apps
y values are numbered from smallest values at top of Canvas and increase downwards.

See below how to center

How do you center an image?

Based on your image Madeline, you might want to do something like this [center] If not, please provide a more detailed explanation about whether you want to center a Sprite on a Canvas, and Image control on your Screen or what. The solution is different depending on what and where you want to 'center'.