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    • 45. 发明申请
    • METHOD FOR CALIBRATING CAMERA MEASUREMENT SYSTEM
    • 用于校准摄像机测量系统的方法
    • US20140340508A1
    • 2014-11-20
    • US14361361
    • 2012-02-24
    • Hideaki Yamamoto
    • Hideaki Yamamoto
    • G06T7/00G06T7/60G06T5/00
    • G06T7/90B23Q17/2233B23Q17/2428B23Q17/249G06T5/002G06T7/60G06T7/73G06T7/80G06T2207/30244H04N17/002
    • This method is characterized in that a ring-shaped jig is disposed on a workpiece on a machine tool, and the optical axis of a camera is aligned parallel to a single axis of the coordinate system of the machine tool. The jig is photographed using the camera in which the horizontal direction or the vertical direction of the camera is aligned with an axial direction other than the signal direction of the machine tool, and the circumferential shape of the jig in the image photographed by the camera is extracted as a contour. The center position of the jig in the image is calculated from the contour while all the distortion correction coefficients in tangential direction and all the distortion correction coefficients in the radial direction are ignored and set to zero. The displacements of the main point of the camera are all set to zero so as to be included in the translation distance of the camera. The translation distance, which is an external parameter of calibration, is calculated on the basis of the center position of the jig in the image and the known three-dimensional center position of the jig.
    • 该方法的特征在于,在机床上的工件上设置环状夹具,并且相机的光轴平行于机床的坐标系的单个轴线对准。 使用相机的水平方向或垂直方向与机床的信号方向以外的轴向对准的照相机拍摄夹具,并且由照相机拍摄的图像中的夹具的周向形状为 提取为轮廓。 图像中的夹具的中心位置由轮廓计算,而切向方向上的所有失真校正系数和径向方向上的所有失真校正系数都被忽略并设置为零。 摄像机的主要点的位移都被设置为零,以被包含在摄像机的平移距离内。 基于夹具在图像中的中心位置和夹具的已知三维中心位置来计算作为校准的外部参数的平移距离。
    • 46. 发明授权
    • Camera
    • 相机
    • US08750700B2
    • 2014-06-10
    • US13246322
    • 2011-09-27
    • Hideaki Yamamoto
    • Hideaki Yamamoto
    • G02B7/28
    • G02B27/0006G02B1/11G02B27/0018G03B13/20G03B17/12
    • The camera includes a field lens into which light from the image taking optical system enters, a conductive lens holding member holding the field lens, a conductive member electrically connected with the lens holding member, a secondary image-forming lens causing the light from the field lens to form plural optical images, a light-receiving element converting the plural optical images into electric signals, a focus detection part detecting a focus state of the image taking optical system by using the electric signals, and a conductive camera chassis. A coating having a light transmissive property and a conductive property is provided on an entrance surface of the field lens. The coating is electrically connected with the camera chassis through the conductive member and the lens holding member.
    • 相机包括:来自图像拍摄光学系统的光进入的场透镜,保持场透镜的导电透镜保持构件,与透镜保持构件电连接的导电构件,使来自场的光的次级图像形成透镜 透镜以形成多个光学图像,将多个光学图像转换为电信号的光接收元件,通过使用电信号检测图像拍摄光学系统的聚焦状态的焦点检测部分和导电相机底盘。 具有透光性和导电性的涂层设置在场透镜的入射面上。 该涂层通过导电构件和透镜保持构件与相机机架电连接。