The image sequences are provided for personal use and in order to facilitate basic research. We ask not to use these data in any commercial way. We appreciate an email message indicating who has copied the data and understand that the source will be acknowledged (KOGS/IAKS Universität Karlsruhe) in case individual frames or results obtained with these data will be published. We explicitly object against redistribution of adultered versions of our image sequences in order to maintain compatibility of sources in case results obtained by different groups have to be compared. Any further distribution of these sequences will precede under the same conditions.