(1) M. Ukai, B. T. Nassu, and N. Nagamine: “Obstacle Detection on Rail Track by Image Sensor”, RTRI Report, Vol. 26, No. 7, pp. 29-34 (2012) (in Japanese)
鵜飼正人・那須ボグダン友幸・長峯 望:「光学画像センサによる列車前方の監視手法」, 鉄道総研報告, Vol. 26, No. 7, pp. 29-34 (2012)
(2) N. Nagamine and M. Ukai: “A Visibility Check Method for Obstruction Warning signal by Cab-mounted Camera”, RTRI Report, Vol. 26, No. 7, pp. 23-28 (2012) (in Japanese)
長峯 望・鵜飼正人:「特殊信号発光機の視認確認手法の車上への適用」, 鉄道総研報告, Vol. 26, No. 7, pp. 23-28 (2012)
(3) B. T. Nassu and M. Ukai: “Rail extraction for driver support in railways”, in IEEE Intelligent Vehicles Symposium, pp. 83-88 (2011)