CAMERA CALIBRATION DEVICE, CAMERA CALIBRATION METHOD, AND CAMERA CALIBRATION PROGRAM

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CAMERA CALIBRATION DEVICE, CAMERA CALIBRATION METHOD, AND CAMERA CALIBRATION PROGRAM

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OKUGAWA KYOHEI / MICHIGUCHI MASAYOSHI

To improve the accuracy of calibrating a camera and work efficiency.SOLUTION: A camera calibration device 10 comprises an image acquisition circuit 16A, a first attitude information acquisition circuit 16B, a second attitude information acquisition circuit 16C, a calculation circuit 16D, and a correction circuit 16E. The image acquisition circuit 16A acquires a photographic image, which is obtained by a camera 20, of a marker for calibration 40 provided on a display unit 30 (information apparatus) comprising an attitude sensor 34. The first attitude information acquisition circuit 16B acquires first attitude information on the marker for calibration during photographing of the photographic image. The second attitude information acquisition circuit 16C acquires second attitude information on a device mounted with the camera (vehicle 2). The calculation circuit 16D calculates the amount of calibration according to camera attitude information on the camera 20 derived based on the marker for calibration included in the photographic image. The correction circuit 16E corrects the amount of calibration calculated by the calculation circuit 16D based on the difference between the first attitude information and the second attitude information.SELECTED DRAWING: Figure 4

【課題】カメラの校正精度および作業効率の向上を図る。【解決手段】カメラ校正装置１０は、画像取得回路１６Ａと、第１姿勢情報取得回路１６Ｂと、第２姿勢情報取得回路１６Ｃと、算出回路１６Ｄと、補正回路１６Ｅと、を備える。画像取得回路１６Ａは、姿勢センサ３４を備えた表示装置３０（情報機器）に設けられた校正用マーカ４０の、カメラ２０による撮影画像を取得する。第１姿勢情報取得回路１６Ｂは、撮影画像の撮影時の校正用マーカの第１姿勢情報を取得する。第２姿勢情報取得回路１６Ｃは、カメラの搭載装置（車両２）の第２姿勢情報を取得する。算出回路１６Ｄは、撮影画像に含まれる校正用マーカに基づいて導出したカメラ２０のカメラ姿勢情報に応じた校正量を算出する。補正回路１６Ｅは、算出回路１６Ｄで算出された校正量を、第１姿勢情報と第２姿勢情報との差に基づいて補正する。【選択図】図４

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Title :

CAMERA CALIBRATION DEVICE, CAMERA CALIBRATION METHOD, AND CAMERA CALIBRATION PROGRAM

Additional title:

カメラ校正装置、カメラ校正方法、およびカメラ校正プログラム

Contributors:

OKUGAWA KYOHEI (author) / MICHIGUCHI MASAYOSHI (author)

Publication date :

2023-10-05

Type of media :

Patent

Type of material :

Electronic Resource

Language :

Japanese

Classification :

IPC:

H04N PICTORIAL COMMUNICATION, e.g. TELEVISION , Bildübertragung, z.B. Fernsehen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR