he image have a colour of black:
this is not always appropriate and you could extend it to assume that the edge
colour extends off the edge of the image.
</li><li>The average colour is then used to pick the correct image from the quantise
strip, and the bits of the quantise image are then copied to the output, adjusting
the colours and luminance if needed.
</li></ol><h2>Conclusion</h2><p>
This article demonstrates applying quantising effects to images.  The code
here can also be used to create other effects