<tt>
Color reduction to black and white
</tt>

<ms>
Color reduction with the Black & White filter is useful with images that have well outlined figures and well contrasted colors. This filter has no parameters associated with it.
To decrease or increase the touch surface, it is useful to use the brightness parameter. By making the image lighter, the raised surfaces decrease; by making the image darker, the raised surfaces increase. This filter is not suitable for overly detailed images, e.g. photographs.
</ms>

<rl>
TBiblosImageTactile
</rl>

<ck>
01MZNE1LM9Z26H
</ck>

<in>
413 0
</in>
