PROBLEM TO BE SOLVED: To correctly recognize a road sign formed by combining a main sign and an auxiliary sign.SOLUTION: An image processing device 1 includes a brightness correction unit 12, a color analysis unit 13, an object detection unit 14 and an object association analysis unit 15. The brightness correction unit 11 creates a brightness correction image obtained by correcting brightness of an input image photographed by an on-vehicle camera mounted on a vehicle. The color analysis unit 13 creates a color correction image obtained by correcting the colors of the input image. The object detection unit 14 detects a main sign included in the input image on the basis of the brightness correction image and detects an auxiliary sign included in the input image on the basis of the color correction image. The object association analysis unit 15 associates the main sign and the auxiliary sign with each other on the basis of the physical relation in the input image between the main sign and the auxiliary sign detected by the object detection unit 14 and recognizes a road sign formed by combining the main sign and the auxiliary sign.SELECTED DRAWING: Figure 1
【課題】本標識と補助標識とを組み合わせた道路標識を正しく認識する。【解決手段】画像処理装置1は、明暗補正部12と、色解析部13と、物体検出部14と、物体関連解析部15と、を備える。明暗補正部11は、車両に搭載された車載カメラによって撮影された入力画像の明暗を補正した明暗補正画像を作成する。色解析部13は、入力画像の色を補正した色補正画像を作成する。物体検出部14は、明暗補正画像に基づいて入力画像に含まれる本標識を検出し、色補正画像に基づいて入力画像に含まれる補助標識を検出する。物体関連解析部15は、物体検出部14により検出された本標識と補助標識の入力画像内の位置関係に基づいて、本標識と補助標識とを互いに関連付けることにより、本標識と補助標識とを組み合わせた道路標識を認識する。【選択図】図1
IMAGE PROCESSING DEVICE, WARNING APPARATUS, IMAGE PROCESSING SYSTEM, AND IMAGE PROCESSING METHOD
画像処理装置、警告装置、画像処理システム、画像処理方法
2017-08-24
Patent
Electronic Resource
Japanese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS / G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL / G06V |
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