SlideShare a Scribd company logo
1 of 5
監視カメラ映像から
価値のある情報の抽出
2/5
監視カメラの利用
・犯罪・事故の防止・記録
・犯罪者の特定・追跡
・マーケティングへの利用
監視カメラは
日本の至るところ
に設置されている.
大量にある映像
から価値ある情
報を抽出できな
いか?
考えられること 必要な技術
・特定の物体検出
・特定の物体追跡
3/5
物体検出
・映像から特定の物体のみを抽出するにはどう
すればいいの?
 背景差分・・・背景画像を用意し、入力画像との差分を
取ることで背景から物体領域のみを抽出する技術。
4/5
画像処理技術
背景画像 入力画像 差分結果
5/5
特定の物体検出
・次に,抽出した物体領域から特定の
物体のみを抽出したい!どうしよう?
例:左図の車だけを検出したい
物体の形状の
特徴を学習して,
判別しよう!
以上が映像から物体を
抽出し,特定の物体を
検出する流れです.
車と人物では
全く形状が
違う!

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