Update embedart.rst

add info about threshold for similarity
This commit is contained in:
Fabrice L. 2014-09-27 11:23:46 +02:00
parent d17c148e52
commit d2db6ae88b

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@ -33,8 +33,9 @@ checking that the difference between the two does not exceed a
threshold. You can set the threshold with the ``compare_threshold`` option.
A threshold of 0 (the default) disables similarity checking and always embeds
new images. Set the threshold to a number between 10 and 100 to adjust the
sensitivity of the comparison.
new images. Set the threshold to a number between 10 and 100 (recommended range)
to adjust the sensitivity of the comparison : the smaller the threshold, the
more similar the images must be.
This feature requires `ImageMagick`_.