Histogram-based visual object recognition for the 2007 four-legged Robocup leaguehttp://www.library.tuc.gr/artemis/DT2008-0259/DT2008-0259.pdfhttp://purl.tuc.gr/dl/dias/00BD46FB-6438-4445-85A5-02322071C7A4Histogram-based visual object recognition for the 2007 four-legged Robocup leaguefree2014-03-24application/pdf