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| -rw-r--r-- | thumbnail/thumbnail-spec.sgml | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/thumbnail/thumbnail-spec.sgml b/thumbnail/thumbnail-spec.sgml index 2eb1a53..cc6c70c 100644 --- a/thumbnail/thumbnail-spec.sgml +++ b/thumbnail/thumbnail-spec.sgml @@ -234,6 +234,15 @@ $XDG_CACHE_HOME/thumbnails/fail/ possible quality when creating the thumbnail. The exact meaning of this is left to the specific program but it should consider applying antialiasing.</para> + + <para>If the original file contains metadata affecting the interpretation + of the image, it should be respected as much as possible. In particular, + metadata specifying the orientation of the original image data should + always be respected. The image data should be transformed as specified by the + metadata before generating the thumbnail. JPEG files commonly have Exif + orientation tags. TIFF files may also have Exif orientation tags, although + this is less common. It is less critical, but still desirable, to respect + other image metadata, such as white balance information.</para> </sect2> <sect2 id="addinfos"><title>Thumbnail Attributes</title> |