To provide a dirt detection device capable of improving detection accuracy of dirt on a lens of an on-vehicle camera.SOLUTION: A dirt detection device of the present disclosure includes an image acquisition unit, a first calculation unit, a second calculation unit, and a detection unit. The image acquisition unit acquires images picked up by an imaging unit for imaging the outside of a vehicle. The first calculation unit calculates a direction of luminance change based on the images acquired by the image acquisition unit. The second calculation unit calculates a histogram representing the frequency of occurrence of the directions of luminance changes included in a direction range for each of the multiple direction ranges. The detection unit detects dirt on a lens of the imaging unit based on the histogram.SELECTED DRAWING: Figure 4
【課題】車載カメラのレンズの汚れの検知精度を向上させることが可能な汚れ検知装置を提供する。【解決手段】本開示の汚れ検知装置は、画像取得部と第1の算出部と第2の算出部と検知部とを備える。画像取得部は、車両の外部を撮像する撮像部で撮像された画像を取得する。第1の算出部は、画像取得部で取得された画像に基づいて、輝度変化の方向を算出する。第2の算出部は、複数の方向範囲のそれぞれについて、該方向範囲に含まれる輝度変化の方向の出現頻度を示すヒストグラムを算出する。検知部は、ヒストグラムに基づいて、撮像部のレンズに付着している汚れを検知する。【選択図】図4
DIRT DETECTION DEVICE
汚れ検知装置
2024-09-30
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 / H04N PICTORIAL COMMUNICATION, e.g. TELEVISION , Bildübertragung, z.B. Fernsehen |
DIRT DETERMINATION DEVICE OF OBSTACLE DETECTION SENSOR AND DIRT DETERMINATION METHOD
European Patent Office | 2018
|Dirt detection method and device and dirt cleaning method and device for laser radar optical window
European Patent Office | 2024
|