skewing or shearing an image in python

Question

I need to shear and skew some images using python. I\'ve come across this skimage module but I don\'t seem able to understand exactly how I\'m supposed to use this.

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Answer 1

If you want to use the skimage module the order of operations are:

• Load image or define data to work with
• Create the transformation you want
• Apply the transformatioin

A work flow might look like the following:

from skimage import io
from skimage import transform as tf

# Load the image as a matrix
image = io.imread("/path/to/your/image.jpg")

# Create Afine transform
afine_tf = tf.AffineTransform(shear=0.2)

# Apply transform to image data
modified = tf.warp(image, inverse_map=afine_tf)

# Display the result
io.imshow(modified)
io.show()

The AffineTransform class from the skimage module accepts a transformation matrix as its first parameter (which the class constructs if you instead use the other parameters).