PROBLEM TO BE SOLVED: To provide a flashing object detection method and a flashing object detection device with which it is possible to discriminate between an object whose luminance on a camera image changes on a predetermined cycle and an other object whose luminance on a camera image changes on a cycle differing from said cycle.SOLUTION: A flashing object detection method multiplies each of pixel signals constituting a plurality of successive camera images by a signal that changes on a predetermined prescribed cycle; extracts a signal component of a prescribed frequency or below from each pixel signal after the multiplication and generates a plurality of successively synchronous images; and detects a flashing cycle of a flashing object whose luminance cyclically changes from an image area whose luminance cyclically changes among the plurality of successive synchronous images.SELECTED DRAWING: Figure 6
【課題】予め定めた周期でカメラ画像上の輝度が変動する物体と、当該周期とは異なる周期でカメラ画像上の輝度が変動する他の物体とを区別することができる点滅物体検出方法及び点滅物体検出装置を提供する。【解決手段】点滅物体検出方法は、連続する複数のカメラ画像を構成する画素信号の各々に対して、予め定めた所定周期で変動する信号を乗算する。乗算後の各画素信号から所定周波数以下の信号成分を抽出して、連続する複数の同期画像を生成する。そして、連続する複数の同期画像のうち周期的に輝度が変動する画像領域から、周期的に輝度が変動する点滅物体の点滅周期を検出する。【選択図】図6
FLASHING OBJECT DETECTION METHOD AND FLASHING OBJECT DETECTION DEVICE
点滅物体検出方法及び点滅物体検出装置
2018-01-11
Patent
Electronic Resource
Japanese
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