root_mean_square_error

menpofit.error.root_mean_square_error(shape, gt_shape)

Computes the root mean square error between two shapes, i.e.

\[\sqrt{\frac{1}{N}\sum_{i=1}^N(s_i-s^*_i)^2}\]

where \(s_i\) and \(s^*_i\) are the coordinates of the \(i\)’th point of the final and ground truth shapes, and \(N\) is the total number of points.

Parameters

• shape (menpo.shape.PointCloud) – The input shape (e.g. the final shape of a fitting procedure).

• gt_shape (menpo.shape.PointCloud) – The ground truth shape.

Returns

root_mean_square_error (float) – The root mean square error.