INFORMATION ACQUISITION DEVICE AND OBJECT DETECTION DEVICE
PROBLEM TO BE SOLVED: To provide an information acquisition device and an object detection device, capable of properly detecting an object, while removing background light.SOLUTION: An information acquisition unit 2 includes a projection part 100 projecting light to a target area, an imaging part 20...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide an information acquisition device and an object detection device, capable of properly detecting an object, while removing background light.SOLUTION: An information acquisition unit 2 includes a projection part 100 projecting light to a target area, an imaging part 200 receiving reflected light, to image the target area, a light source control part 21a controlling the light source 110 of the projection part 100, and imaging information acquisition part 21b controlling the CMOS image sensor 240 of the imaging part 200, to acquire a background light removal image referred to for object detection on the basis of a light emission image and a light-off image. The imaging information acquisition part 21b sequentially performs exposure control for each line of the CMOS image sensor 240. The light source control part 21a controls the light source 110, so that a period in which the light is emitted in the exposure period of a line group used for the object detection of the CMOS image sensor 240 is longer than that in the exposure period of the line group not used for the object detection.
【課題】背景光を除去しつつ、適正に物体検出することが可能な情報取得装置および物体検出装置を提供する。【解決手段】情報取得ユニット2は、目標領域に光を投射する投射部100と、反射光を受光して目標領域を撮像する撮像部200と、投射部100の光源110を制御する光源制御部21aと、撮像部200のCMOSイメージセンサ240を制御し、発光画像および消灯画像に基づいて物体検出に参照される背景光除去画像を取得する撮像情報取得部21bと、を備える。撮像情報取得部21bは、CMOSイメージセンサ240のライン毎に順番に露光制御を行い、光源制御部21aは、CMOSイメージセンサ240の物体検出に用いるライン群の露光期間の方が、物体検出に用いないライン群の露光期間よりも、光が出射される期間がより多く掛かるように、光源110を制御する。【選択図】図2 |
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