distance_two_indices

menpofit.error.distance_two_indices(index1, index2, shape)

Computes the Euclidean distance between two points of a shape, i.e.

\[\sqrt{(s_{i,x}-s_{j,x})^2 + (s_{i,y}-s_{j,y})^2}\]

where \(s_{i,x}\), \(s_{i,y}\) are the x and y coordinates of the \(i\)’th point (index1) and \(s_{j,x}\), \(s_{j,y}\) are the x and y coordinates of the \(j\)’th point (index2).

Parameters

• index1 (int) – The index of the first point.

• index2 (int) – The index of the second point.

• shape (menpo.shape.PointCloud) – The input shape.

Returns

distance_two_indices (float) – The Euclidean distance between the points.