inline determination of several product characteristics.[26,27]
New developments in hardware, particularly the availability
of cheap and robust imaging systems, as well as
the speed of processing of everyday PCs, allow the development
of systems which derive quality information from
images or from video streams[30,31] at low cost as well as
image-analysis-based control systems.[31,32] Several publications
demonstrate the suitability of average data from
computer vision systems (CVS) to evaluate changes of
color,[