From 74d7319c6681344ee982579058933645fe8491f5 Mon Sep 17 00:00:00 2001 From: scaramallion Date: Sun, 16 May 2021 10:57:30 +1000 Subject: [PATCH] Reword the handbook entries to make explicit reference to RCT and ICT --- docs/handbook/image-file-formats.rst | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/docs/handbook/image-file-formats.rst b/docs/handbook/image-file-formats.rst index f76cc82b7..782331bfd 100644 --- a/docs/handbook/image-file-formats.rst +++ b/docs/handbook/image-file-formats.rst @@ -506,10 +506,12 @@ The :py:meth:`~PIL.Image.Image.save` method supports the following options: Defaults to ``False``, which uses the lossless DWT 5-3. **mct** - If ``1`` then apply multiple component transformation when encoding, - otherwise use ``0`` for no component transformation (default). MCT works - best with a ``mode`` of ``RGB`` and is only applied when the image data has - 3 components. + If ``1`` then enable multiple component transformation when encoding, + otherwise use ``0`` for no component transformation (default). If MCT is + enabled and ``irreversible`` is ``True`` then the Reversible Color + Transformation will be applied, otherwise encoding will use the + Irreversible Color Transformation. MCT works best with a ``mode`` of + ``RGB`` and is only applicable when the image data has 3 components. **progression** Controls the progression order; must be one of ``"LRCP"``, ``"RLCP"``,