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    Depth-of-field control apparatus and image pickup apparatus having the same therein
    5.
    发明授权
    Depth-of-field control apparatus and image pickup apparatus having the same therein 失效
    景深控制装置和其中具有其的图像拾取装置

    公开(公告)号：US5282045A

    公开(公告)日：1994-01-25

    申请号：US689626

    申请日：1991-04-23

    Applicant: Itaru Mimura ,  Kenji Takahashi ,  Toshiyuki Akiyama ,  Yoshizumi Eto ,  Naoki Ozawa ,  Takahiro Matsumoto

    Inventor： Itaru Mimura ,  Kenji Takahashi ,  Toshiyuki Akiyama ,  Yoshizumi Eto ,  Naoki Ozawa ,  Takahiro Matsumoto

    IPC: G02B7/28 ,  H04N5/225 ,  H04N5/232 ,  H04N5/262 ,  H04N5/265

    CPC classification number: H04N5/2621 ,  H04N13/0235 ,  H04N13/0271 ,  H04N5/23212 ,  H04N5/2356

    Abstract: An image pickup apparatus for a television and a depth-of-field control apparatus used in the same. Image signals corresponding to a plurality of picture images different in focal point or length position are obtained by a mechanism for changing a focal point or length position to produce a new image signal by composing these image signals through a composition circuit, and motion information of an object is obtained by a circuit for detecting a moving portion in the object to control the image composition by the motion information. The focal point or length position is moved in synchronism with an integer multiple of a vertical scanning period of the television. The image signals corresponding to the plurality of picture images different in focal point or length position are obtained within one vertical scanning period determined by the system of the television. The amount of movement of the focal point or length position is controlled in conjunction with a value of a lens aperture of the camera lens. The image composition is controlled by a composition control circuit made up of a circuit for detecting individual powers of image signals corresponding to a plurality of different picture images, a circuit for comparing the detected powers with each other, and a circuit for detecting the position of an edge included in one of the image signals, wherein a control signal for the image composition produced by the power comparison circuit is compensated by the edge position information obtained by the edge detection circuit.

    Abstract translation: 一种用于电视的摄像装置及其场景控制装置。 通过用于通过组合电路组合这些图像信号来改变焦点或长度位置以产生新的图像信号的机构来获得与焦点或长度位置不同的多个图像图像相对应的图像信号，以及运动信息 通过用于检测对象中的移动部分的电路来获得对象，以通过运动信息来控制图像合成。 焦点或长度位置与电视的垂直扫描周期的整数倍同步地移动。 在由电视机系统确定的一个垂直扫描周期内获得与焦点或长度位置不同的多个图像图像相对应的图像信号。 焦点或长度位置的移动量与相机镜头的镜头孔径的值一起被控制。 图像组成由用于检测与多个不同图像图像相对应的图像信号的各个功率的电路组成的合成控制电路控制，用于比较检测到的功率的电路和用于检测检测到的功率的电路 包括在一个图像信号中的边缘，其中由功率比较电路产生的图像合成的控制信号由边缘检测电路获得的边缘位置信息补偿。

    Computational methods and electronic camera apparatus for determining distance of objects, rapid autofocusing, and obtaining improved focus images
    10.
    发明授权
    Computational methods and electronic camera apparatus for determining distance of objects, rapid autofocusing, and obtaining improved focus images 失效
    用于确定物体距离的计算方法和电子照相机装置，快速自动聚焦和获得改进的聚焦图像

    公开(公告)号：US5193124A

    公开(公告)日：1993-03-09

    申请号：US537117

    申请日：1990-06-15

    Applicant: Muralidhara Subbarao

    Inventor： Muralidhara Subbarao

    IPC: G01C3/08 ,  G01C11/02

    CPC classification number: G01C3/08 ,  G01C11/02 ,  H04N13/0235 ,  H04N13/0271

    Abstract: The present invention is a method and apparatus for determining the distance of a surface patch of an object from a camera system and also for focusing a surface patch of such object as well as obtaining an improved focus image of the surface patch. The present invention also includes a method of determining a set of unknown parameters of a linear shift-invariant system. The camera system of the present invention has an aperture through which light enters, an image detector, an image forming optical system having first and second principal planes and a focal length, the second principal plane arranged closer to the image detector than the first principal plane, a light filter, a camera controller, and an image processor operatively connected to the image detector and to the camera controller. The camera is set to a first set of camera parameters which include the distance(s) between the second principal plane and the image detector, the diameter (D) of the camera aperture, the focal length (f) of the camera system and the spectral characteristic (.lambda.) of light transmitted by the light filter. The apparatus and the method of the present invention are widely applicable and they significantly enhance the efficiency of image processing to provide the distance of an object and required changes in the camera parameters to focus the object.

    Abstract translation: 本发明是一种用于确定物体与照相机系统的表面贴片的距离以及用于聚焦这种物体的表面贴片以及获得表面贴片的改进的聚焦图像的方法和装置。 本发明还包括确定线性移位不变系统的一组未知参数的方法。 本发明的照相机系统具有光入射的孔径，图像检测器，具有第一和第二主平面和焦距的成像光学系统，第二主平面布置成比第一主平面更靠近图像检测器 ，光滤波器，照相机控制器和可操作地连接到图像检测器和照相机控制器的图像处理器。 相机被设置为第一组相机参数，其包括第二主平面和图像检测器之间的距离，相机孔径的直径（D），相机系统的焦距（f）和 由光滤光器透射的光的光谱特性（λ）。 本发明的装置和方法可广泛应用，并且它们显着提高了图像处理的效率，以提供对象的距离和相机参数中所需的改变以聚焦对象。

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