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napari / napari-tiff

A napari reader plugin for tiff images.
BSD 3-Clause "New" or "Revised" License
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Handle ASSOCALPHA and UNASSALPHA (associated and unassociated transparency values) #7

Open GenevieveBuckley opened 4 years ago

GenevieveBuckley commented 4 years ago

Handle ASSOCALPHA and UNASSALPHA (associated and unassociated transparency values)

https://github.com/GenevieveBuckley/napari-tifffile/blob/155ea1318b0f5156900f6cda898042776b984fc4/napari_tifffile/napari_tifffile.py#L153

From the docs at hyperspy tifffile

extrasamples (tuple of {'UNSPECIFIED', 'ASSOCALPHA', 'UNASSALPHA'}) – Defines the interpretation of extra components in pixels.

  • ‘UNSPECIFIED’: no transparency information (default).
  • ‘ASSOCALPHA’: single, true transparency with pre-multiplied color.
  • ‘UNASSALPHA’: independent transparency masks.