Scikit image: resize() got an unexpected keyword argument 'anti_aliasing'

Question

I am trying to use the resize function using aliasing exactly as described in the documentation: http://scikit-image.org/docs/dev/auto_examples/transform/plot_rescale.html

from skimage.transform import resize
im_test = resize(im_test, (im_test.shape[0] / 3, im_test.shape[1] / 3),anti_aliasing=True)

However this returns:

Scikit image: resize() got an unexpected keyword argument 'anti_aliasing'

What is the reason for this? Is anti_aliasing on by default? What is the best way to resize an image with anti aliasing if this function can't be used?

sascha · Answer 1 · 2017-11-20T12:57:55.470

2

Checking the code here with git blame, it seems it was introduced on 19.09.2017.

The only release version supporting this currently should be: v0.13.1, which you will need then!

For checking, what kind of version you are using currently, i recommend opening your interpreter (of your used python-distribution) and do:

import skimage as sk
sk.__version__
# '0.13.0' i would not be able to use it, it seems

edited Nov 20 '17 at 12:57

answered Nov 18 '17 at 21:23

sascha

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What? The above is a check (which will work in a jupyter notebook too). No special import-style. Just check which version you have and if it's not 0.13.1, you probably need to upgrade. Without using virtual-environments, you can only have one version installed at a time. – sascha Nov 19 '17 at 12:59
1

This is a new feature that will be available in the next release, 0.14. – Stefan van der Walt Dec 07 '17 at 06:26
7

I have `0.13.1` and anti_aliasing isn't available yet – Toke Faurby Dec 27 '17 at 22:17
4

True. If you check the source code to which the answer is referring, it's simply not there. The answer is incorrect. – Lukasz Tracewski Feb 17 '18 at 15:27
I cloned and installed the master branch. That seemed to work. (version 0.14dev – Matt S Apr 29 '18 at 15:14
You can simply upgrade scikit-image package using: `pip3 install --upgrade scikit-image` – Claude COULOMBE Jul 03 '19 at 07:31

score 0 · Answer 2 · answered Nov 21 '17 at 08:16

there are two sets of documentation

1) http://scikit-image.org/docs/dev/api/skimage.transform.html#skimage.transform.resize

2)http://scikit-image.org/docs/0.11.x/api/skimage.transform.html#resize

the second one doesn't accept anti_aliasing as a parameter and is the 0.11 version, the one that accepts anti aliasing is 0.14 looks like older version uses a box filter while resizing,and all pixels have equal weight

Scikit image: resize() got an unexpected keyword argument 'anti_aliasing'

2 Answers2