PIL and font colour

[Steve Holden]

Johny wrote:
>  I use PIL to write some text to a picture.The text must  be seen wery
> clearly.
> I write the text to different pictures but to the same position. As
> pictures maybe  different, colour, in the position where I write the
> text, is also different.
> Is there a way how to set the font colour so that it will be seen very
> clearly in the picture?
> For example, if the picture is bright ( for example yellow), the font
> colour should be dark( e.g. black) and vice versa.
> Can anyone help?
> Thanks
> L.
> 
The easy way to ensure this is to paint a background rectangle of an 
appropriate color to ensure good font contrast before writing the text. 
Of course, this obscures rather more of the image in the background than 
you might otherwise.

Apart from that you could try averaging the pixel values in the area you 
are going to paint on, and then choose a font color that contrasts well 
with the average. If there are large variations in color, however, this 
can give disappointing results.

If you'd like to get some insight into color contrast you could do worse 
than start at

   http://wellstyled.com/tools/colorscheme2/index-en.html

regards
  Steve
-- 
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