1 3 5 4 1 2 1,.,., Peg-Scope Viewer,,.,,,,. Utilization of Watching Logs for Support of Multi-View Video Contents Kosuke Niwa, 1 Shogo Tokai, 3 Tetsuya Kawamoto, 5 Toshiaki Fujii, 4 Marutani Takafumi, 1 Shoji Kajita 2 and Kenji Mase 1 Multi-view video contents are considered as a good video watching method for sports and craftsman s skill. But when viewers watch multi-view video contents, they need to choose a viewpoint always, they become tired. In this paper, we propose that method of watching support in multi-view video contents. In this method, viewer s watching histories are analyzed and data of watching frequency are made from it. Data of watching frequency show viewer s interest. They are made visible and shared by social. And then we checked by experiments that this method is able to support viewers. 1.,.,,.,,,..,,,,.,.,. Miyamori 1) TV., 2) 3),,,.,,,..,,.,.,. 1 Graduate School of Information Science, Nagoya University 2 Information and Communication Planning Office, Nagoya University 3 Fukui University 4 Tokyo Institute of Technology 5 Chukyo Television 1 c 2011 Information Processing Society of Japan
1,.,,., 4). 4),,,,, 1..,,.,,. 2.,.. 2. ( 1 ), ( 2 ), ( 3 ), ( 4 ) View-gram ( 5 ), 2 (1) (5) 1 2., (4), 2. 2.1,,.,,,. 2.2 View-gram View-gram,. 3. View-gram.. 10,,. View-gram. 2 c 2011 Information Processing Society of Japan
3 View-gram 2.3,,.,,.,.., 4 View-gram. (a) 1. 1,, (b),. 3 1 0.33, (c) 1 8 7, 8, 9 (d),,, 3. 1 :,,. 4 3.1, Peg-Scope Viewer 7.,.,,,,,,., image center, stage center, girla girlg 9.. 3.2, 1 50, 300fps. 20 30 16 13, 3,, 15, 30,. 15,,., 30, 3 c 2011 Information Processing Society of Japan
5 View-gram, REC.,. 3.3 View-gram 5. 7 10..,,,..,.. : girle, girle View-gram 6.., girle. 6 girle View-gram,, girle,.,.. 3.4,,,,.,,., View-gram,. 4. 2 : 4.1 1 View-gram Peg-Scope Viewer 7. Peg-Scope Viewer, 4 c 2011 Information Processing Society of Japan
1 P peg Table 1 Important View precision for each Peg-points stage center image center girla girlb girlc girld girle girlf girlg 0.29 0.34 0.31 0.30 0.38 0.29 0.28 0.26 0.23 0.30 P peg = end t=0:00 S key S all (1) View-gram. S peg 2. F selected, F same View-gram 3.,, 7 Peg-Scope Viewer, View-gram. View-gram., View-gram. 4.2 1, Peg-Scope Viewer, 20 4 15. View-gram,,,.,,. P peg 1. S key t, S all t. S key S all.,. F selected, 3 1., 3 1, 1 50 33000, F selected 11000. S peg = F same F selected (2) 4.3 P peg 1. P peg 0.38, 0.23., P peg 1/16 = 0.0625,., 2. 3 0.5, 0.52 0.5. View-gram 3,.,. stage center girlb,, girlf 0.22., View-gram,. 5 c 2011 Information Processing Society of Japan
2 S peg Table 2 Important View recall rate for each Peg-points IC SC girla girlb girlc girld girle girlf girlg All 1 0.85 0.62 0.77 0.25 0.32 0.56 2 0.76 0.47 0.57 0.48 0.42 0.39 0.51 3 0.11 0.67 0.81 0.23 0.45 4 0.92 0.73 0.55 0.18 0.39 0.55 0.84 0.48 0.54 0.69 0.48 0.59 0.39 0.22 0.35 0.52 IC : image center SC : stage center All : 8 2 girlf View-gram,, 4 3 View-gram., 1, girlf,. View-gram. girlf View-gram 2 8.. girlf, View-gram.,,, View-gram, View-gram. 5.,,, View-gram., View-gram., View-gram,.,, View-gram, Peg-Scope Viewer.,,.,.,. SCOPE (082306005) (NICT) CREST. 1) Miaymori, H., Nakamura, S. and Tanaka, K.: Generation of views of TV content using TV viewers perspectives expressed in live chats on the web Proceedings of the 13th annual ACM international conference on Multimedia, pp.853 861 (2005). 2). [ ] Vol.50, pp.37 42 (2008-05-21). 3) 2010 (2010). 4) Human Interface Society, Vol.11, No.1, pp.7 12 (2009-03-10). 6 c 2011 Information Processing Society of Japan