Image filters¶

[1]:

import seaborn_image as isns

isns.set_context("notebook")
isns.set_image(cmap="inferno") # set default colormap to inferno

/home/docs/checkouts/readthedocs.org/user_builds/seaborn-image/envs/v0.4.1/lib/python3.7/site-packages/traitlets/traitlets.py:3036: FutureWarning: --rc={'figure.dpi': 96} for dict-traits is deprecated in traitlets 5.0. You can pass --rc <key=value> ... multiple times to add items to a dict.
  FutureWarning,
/home/docs/checkouts/readthedocs.org/user_builds/seaborn-image/envs/v0.4.1/lib/python3.7/_collections_abc.py:841: MatplotlibDeprecationWarning:
The validate_legend_loc function was deprecated in Matplotlib 3.3 and will be removed two minor releases later.
  self[key] = other[key]

[2]:

pol = isns.load_image("polymer")

[3]:

ax = isns.filterplot(pol, filt="gaussian", sigma=2.5)

../_images/Tutorial_Image_Filters_3_0.svg

[4]:

ax = isns.filterplot(pol, filt="median", size=5)

../_images/Tutorial_Image_Filters_4_0.svg

[5]:

isns.implemented_filters.keys()

[5]:

dict_keys(['sobel', 'gaussian', 'median', 'max', 'diff_of_gaussians', 'gaussian_gradient_magnitude', 'gaussian_laplace', 'laplace', 'min', 'percentile', 'prewitt', 'rank', 'uniform'])

User-defined filters or any callable filter function¶

[6]:

from skimage.filters import scharr

ax = isns.filterplot(pol, filt=scharr)

../_images/Tutorial_Image_Filters_7_0.svg

Fast-Fourier Transform¶

[7]:

ax = isns.fftplot(pol)

../_images/Tutorial_Image_Filters_9_0.svg

[8]:

ax = isns.fftplot(pol, window_type="hann")

../_images/Tutorial_Image_Filters_10_0.svg

[9]:

ax = isns.fftplot(pol, shift=False)

../_images/Tutorial_Image_Filters_11_0.svg

FilterGrid¶

Explore relationships between different parameters of a filter

[10]:

g = isns.FilterGrid(pol, "median", col="size", size=[3,4,5,7])

../_images/Tutorial_Image_Filters_13_0.svg

[11]:

g = isns.FilterGrid(pol, "median", col="size", size=[3,4,5,7], col_wrap=2)

../_images/Tutorial_Image_Filters_14_0.svg

[12]:

g = isns.FilterGrid(pol,
                    "percentile",
                    row="percentile",
                    col="size",
                    percentile=[3, 5, 7, 10],
                    size=[3, 5, 7, 10]
                   )

../_images/Tutorial_Image_Filters_15_0.svg

[13]:

g = isns.FilterGrid(pol, "median", col="size", size=[2,3,4,5], mode="reflect")

../_images/Tutorial_Image_Filters_16_0.svg

[14]:

scale = {"dx" : 15, "units" : "nm"}

g = isns.FilterGrid(pol,
                    "median",
                    col="size",
                    size=[2,3,4,5],
                    mode="reflect",
                    col_wrap=2,
                    **scale
                   )

../_images/Tutorial_Image_Filters_17_0.svg

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