@techreport{oai:ipsj.ixsq.nii.ac.jp:00112908,
 author = {岡崎, 匡紀 and 塚田, 晃司 and Masaki, Okazaki and Koji, Tsukada},
 issue = {36},
 month = {Jan},
 note = {災害が発生すると，携帯電話などの既存の情報伝達インフラが機能しなくなることがある．さらに日没後は被災地域の探索や被災者の安否確認が著しく困難になってしまう．そのような状況において，被災地から外部へ情報を送る手段が必要となる．このような状況に対処する通信方法として，風景に溶け込み難く，夜間でも発見が容易に行える可視光の色変化が考えられる．色の推定には，観測した色と各色の基準ベクトルとの類似度から推定する．基準ベクトルは周囲の環境やカメラの性能に影響されるため，K-means++法を用いて動的に推定する．これにより，周囲の環境やカメラの性能に左右されずに認識率を向上できるシステムを提案する．, If a disaster occurs, existing communication infrastructures such as cell-phone don't function. In addition, it becomes so difficult to search disaster areas and to confirm safety of victims in disaster areas after sunset. In that situation, we need a method to send information from disaster area to outside. To cope with that situation, we propose a communication system using change of colors of visible light which is hard to melt into scenery and easy to find at night. We estimate the color from resemblance degree of observed color and standard vectors of each color. Standard vectors are influenced by neighboring environment and performance of the camera, so we estimate dynamically using the K-means++ method. Therefore, we suggest the system which can improve recognition rate without being influenced by neighboring environment and performance of the camera.},
 title = {発光色の推定にK-means++法を適用した災害時可視光通信手法の提案},
 year = {2015}
}