PROBLEM TO BE SOLVED: To prevent the attention of a driver from being distracted by generation of frequent warnings, by inhibiting a collision warning signal in a case where the driver is absolutely willing to avoid a collision.SOLUTION: A vehicle collision warning inhibition method comprises: an optical flow change rate detection step ST110 in which a video showing ahead of a vehicle and video recognition information are extracted from a video recognition module attached to the vehicle and a rate of change in the size of an object present ahead, which is included in video recognition information for each of the frames of the video showing ahead of the vehicle is detected; an average optical flow change rate calculation step ST120 in which the average value of the rates of change in optical flow in specific frame sections is calculated using the present time as a reference; a step ST130 in which it is determined whether a value obtained by subtracting the average rate of change in optical flow from the present rate of change in optical flow is smaller than a predetermined threshold; step ST180 in which in a case where the value is determined smaller than the threshold, the determination is made as a brake operation signal; and a step ST200 in which, in a case where a collision warning signal is generated within a determined specific time, output of a collision warning signal is inhibited.SELECTED DRAWING: Figure 2
【課題】運転者の衝突回避の意志が明確な場合、衝突警報信号を禁止させ、頻繁な警報発動による運転者の注意分散を防止する。【解決手段】車両衝突警報禁止方法は、車両に装着される映像認識モジュールから車両の前方映像および映像認識情報を抽出して、前方映像のフレームごとの映像認識情報に含まれた前方物体の大きさ変化率を検出する光学フロー変化率検出ステップST110と、現在時点を基準として所定フレーム区間の光学フロー変化率の平均値を演算する平均光学フロー変化率演算ステップST120と、現在の光学フロー変化率から平均光学フロー変化率を減算した値が予め定められた閾値未満であるかを判断するステップST130と、閾値未満と判断されると、ブレーキ操作信号と決定するステップST180と、決定された所定時間内に衝突警報信号が発生されたと判断すると、衝突警報信号の出力を禁止させるステップST200とを含む。【選択図】図2
VEHICLE COLLISION WARNING INHIBITION METHOD USING OPTICAL FLOW ANALYSIS
光学フロー分析を利用した車両衝突警報禁止方法
2018-04-12
Patent
Electronic Resource
Japanese
IPC: | G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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