REPORT idiap01-02/IDIAP Artifacts of the colour coherence vector and an alternative similarity measure Shearer, Kim Venkatesh, Svetha EXTERNAL http://publications.idiap.ch/attachments/reports/2001/rr01-02.pdf PUBLIC Idiap-RR-02-2001 2001 IDIAP Image similarity measures can be used to capture useful structure in video processing. In this paper one popular variation, the colour coherence vector, is discussed. It is shown to perform poorly for certain tasks and a simpler, but more effective alternative is proposed. This alternative is examined for the initial task of anchor person spotting in news broadcasts, and extended to generic interview detection.