ipfml.processing.compression

Functions for image compression and extraction

Functions

get_SVD(image)	Transforms Image using SVD compression
get_SVD_U(image)	Transforms Image into SVD and returns only ‘U’ part
get_SVD_V(image)	Transforms Image into SVD and returns only ‘V’ part
get_SVD_s(image)	Transforms Image into SVD and returns only ‘s’ part

ipfml.processing.compression.get_SVD(image)

Transforms Image using SVD compression

Parameters:image – image to convert into SVD compression Returns:U, s, V obtained from SVD compression

Usage:

>>> from PIL import Image
>>> from ipfml.processing import compression
>>> img = Image.open('./images/test_img.png')
>>> U, s, V = compression.get_SVD(img)
>>> U.shape
(200, 200, 3)
>>> len(s)
200
>>> V.shape
(200, 3, 3)

ipfml.processing.compression.get_SVD_U(image)

Transforms Image into SVD and returns only ‘U’ part

Parameters:image – image to convert Returns:U matrix from SVD compression

Usage:

>>> from PIL import Image
>>> from ipfml.processing import compression
>>> img = Image.open('./images/test_img.png')
>>> U = compression.get_SVD_U(img)
>>> U.shape
(200, 200, 3)

ipfml.processing.compression.get_SVD_V(image)

Transforms Image into SVD and returns only ‘V’ part

Parameters:image – image to convert Returns:V matrix obtained from SVD compression

Usage :

>>> from PIL import Image
>>> from ipfml.processing import compression
>>> img = Image.open('./images/test_img.png')
>>> V = compression.get_SVD_V(img)
>>> V.shape
(200, 3, 3)

ipfml.processing.compression.get_SVD_s(image)

Transforms Image into SVD and returns only ‘s’ part

Parameters:image – image to convert Returns:vector of singular values obtained from SVD compression

Usage:

>>> from PIL import Image
>>> from ipfml.processing import compression
>>> img = Image.open('./images/test_img.png')
>>> s = compression.get_SVD_s(img)
>>> len(s)
200