SYSTEM FOR COUNTING MOVING OBJECTS BY DIRECTION
PROBLEM TO BE SOLVED: To simplify a configuration to make fast processing possible.SOLUTION: A scene around a gate through which people enter and exit is photographed by a fixed-point camera, and a moving picture comprising a plurality of frame images is recorded. A detection line L is set at a gate...
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Sprache: | eng ; jpn |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To simplify a configuration to make fast processing possible.SOLUTION: A scene around a gate through which people enter and exit is photographed by a fixed-point camera, and a moving picture comprising a plurality of frame images is recorded. A detection line L is set at a gate position on image, and n detection reference points E(j) are set on top of it at prescribed intervals (j=1-n). Block comprising minute areas are set centering around each detection reference point E(j), a place in the next frame to which a unit image of interest within each individual block will move is recognized, and a displacement vector V(i,j) indicating a movement path of the unit image of interest which was at a j'th detection reference point E(j) is obtained by searching for an i'th frame. Normal components of the vector V(i,j) relative to the detection line L are totalized while changing parameters i,j, so that components heading upward and components heading downward in the diagram are added separately, and each totalized value is outputted as a value proportional to the number of people moving in each direction.
【課題】構成を簡素化し、高速処理を可能にする。【解決手段】定点カメラにより人が出入りするゲート付近を撮影し、時系列で並べられた複数のフレーム画像からなる動画を収録する。画像上のゲート位置に、検出ラインLを設定し、その上に所定間隔でn個の検出基準点E(j)を設定する(j=1〜n)。各検出基準点E(j)を中心として微小領域からなるブロックを設定し、個々のブロック内の着目単位画像が次のフレームでどこへ移動するかを認識し、第i番目のフレームを探索して第j番目の検出基準点E(j)の位置にあった着目単位画像の移動経路を示す変位ベクトルV(i,j)を求める。ベクトルV(i,j)の検出ラインLに対する法線成分を、パラメータi,jを変化させながら、図の上方に向かう成分と下方に向かう成分とが別々に加算されるように集計し、各集計値を各方向に移動する人間の数に比例する値として出力する。【選択図】図12 |
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