PROBLEM TO BE SOLVED: To provide an object detector capable of improving the accuracy of detecting a pedestrian from a photographic image.SOLUTION: An object detector 1 comprises: a detection window setting unit 12 that sets a detection window 23 for a gray scale image 22; a likelihood calculation unit 13 that calculates a forward and backward likelihood Lfb in which a pedestrian who faces forward or backward is likely present in the detection window 23, calculates a horizontal likelihood Ls in which the pedestrian who faces to the right or to the left is likely present in the detection window 23, and calculates a diagonal likelihood Ld in which the pedestrian who faces diagonally is likely present in the detection window 23; and a determination unit 14 that determines whether the pedestrian is present or not in the detection window 23, on the basis of the forward and backward likelihood Lfb, the horizontal likelihood Ls, and the diagonal likelihood Ld that have been calculated by the likelihood calculation unit 13.

    【課題】撮影画像から歩行者を検出する精度を向上することができる物体検出装置を提供することを課題とする。【解決手段】物体検出装置1において、検出窓設定部12は、グレースケール画像22に対して検出窓23を設定する。尤度算出部13は、前又は後ろを向いた歩行者が検出窓23内に存在するであろう前後尤度Lfbを検出窓23から算出する。尤度算出部13は、右又は左を向いた歩行者が検出窓23内に存在するであろう側面尤度Lsを検出窓23から算出する。尤度算出部13は、斜めを向いた歩行者が検出窓23内に存在するであろう斜め尤度Ldを検出窓23から算出する。判断部14は、尤度算出部13により算出された前後尤度Lfbと側面尤度Lsと斜め尤度Ldとに基づいて、検出窓23内に歩行者が存在するか否かを判断する。【選択図】図1


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    Title :

    OBJECT DETECTOR


    Additional title:

    物体検出装置


    Contributors:

    Publication date :

    2015-10-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS



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