Module multires 

Helper functions for generation of multi-resolution data.

Functions

gradients_squared_norm

Compute centered gradients norm at each resolution from the image at the higher resolution.

gradients_xy

Compute centered gradients at each resolution from the image at the higher resolution.

halve

Halve the resolution of a matrix by applying a function to each 2x2 block.

limited_sequence

Recursively apply a function transforming an image until it’s not possible anymore or the max length is reached.

mean_pyramid

Recursively generate a pyramid of matrices where each following level is half the previous resolution, computed with the mean of each 2x2 block.

sequence

Recursively apply a function transforming data until it’s not possible anymore.