Exercise

Affine transform

An affine transformation matrix provides directions for up to four types of changes: translating, rotating, rescaling and shearing. The elements of the matrix map the coordinates from the input array to the output.

Encoded transformations within a matrix

For this exercise, use ndi.affine_transform() to apply the following registration matrices to im. Which one does the best job of centering, leveling and enlarging the original image?

Instructions

50 XP

Possible answers

[[1, 0, 0], [0, 1, 0], [0, 0, 1]]

[[1.5, -0.8, 60], [0.8, 1.5, -140], [0, 0, 1]]

[[1, -0.3, 60], [-0.3, 1, 60], [0, 0, 1]]

[[0.8, -0.4, 90], [0.4, 0.8, -6.0], [0, 0, 1]]