Compositions

class FiltersComposition(cls_, *custom_filters)

Provide appropriate filters compositions based on the cls_ parameter.

Parameters

• cls (type, {Tile, Slide, Compose}) – The class to get the appropriate filters composition for

• *custom_filters (imf.ImageFilter) – Custom filter applied if (and only if) the type Compose is used.

• Example –

  >>> from histolab.filters.compositions import FiltersComposition
  >>> from histolab.slide import Slide
  >>> from histolab.tile import Tile
  >>> filters_slide = FiltersComposition(Slide).tissue_mask_filters
  >>> filters_tile = FiltersComposition(Tile).tissue_mask_filters
  

• cls_ (type) –

• custom_filters (histolab.filters.image_filters.ImageFilter) –

property tissue_mask_filters: histolab.filters.image_filters.Compose

Return filters composition based on the cls_ parameter.

Returns

If the cls_ parameter is the class Slide the returned filters chain is composed of:

• image_filters.RgbToGrayscale()

• image_filters.OtsuThreshold()

• morphological_filters.BinaryDilation()

• morphological_filters.RemoveSmallHoles()

• morphological_filters.RemoveSmallObjects()

If the cls_ parameter is the class Tile the returned filters chain is composed of:

• image_filters.RgbToGrayscale()

• image_filters.OtsuThreshold()

• morphological_filters.BinaryDilation(disk_size=2)

• morphological_filters.BinaryFillHoles(structure=np.ones((20, 20)))

Return type

imf.Compose