OBJECT DETECTOR AND CONGESTION STATE MANAGEMENT DEVICE

To optimize a hyper parameter relating to the accuracy of object detection.SOLUTION: An object detector pertaining to the present invention comprises: storage means in which a first threshold and a second threshold larger than the first threshold are stored; acquisition means for acquiring an image; detection means for detecting a prescribed object existing in a space on the basis of the image; calculation means for calculating, for each of the prescribed objects detected, a value that indicates the likelihood of the prescribed object being existent; determination means for determining a congestion area, out of the areas in the image, in which a greater number of the prescribed objects than a prescribed count are detected; first detection means for detecting an object, among the prescribed objects detected in the congestion area, the value of which is larger than the first threshold; and second detection means for detecting an object, among the prescribed objects detected in a non-congestion area, except the congestion area, out of the areas in the image, the value of which is larger than the second threshold.SELECTED DRAWING: Figure 9 【課題】物体検出精度に関するハイパーパラメータの最適化を図る。【解決手段】本発明に係る物体検出装置は、第１閾値と、第１閾値よりも大きい第２閾値とを記憶した記憶手段と、記画像を取得する取得手段と、スペースに存在する所定の物体を、画像に基づいて検知する検知手段と、検知された所定の物体毎に、所定の物体が存在する確からしさを示す値を算出する算出手段と、画像中の領域のうち、所定数以上の前記所定の物体が検知された混雑エリアを判定する判定手段と、混雑エリア内で検知された所定の物体のうち、値が第１閾値よりも大きい物体を検出する第１検出手段と、画像中の領域のうち混雑エリアを除く非混雑エリア内で検知された所定の物体のうち、値が前記第２閾値よりも大きい物体を検出する第２検出手段と、を有する。【選択図】図９