Motor vehicle obstacle monitoring system using optical flow processing
    1.
    发明授权
    Motor vehicle obstacle monitoring system using optical flow processing 失效
    机动车障碍物监测系统采用光流处理

    公开(公告)号:US5521633A

    公开(公告)日:1996-05-28

    申请号:US126298

    申请日:1993-09-24

    摘要: A monitoring method for moving vehicles allows the presence of danger to be determined from the magnitude of an optical flow vector. The optical flow vector is detected as a movement of a single point on an object taken over two images, with one image taken at a preceding time and the other image taken at succeeding time in a series of images. A long and narrow window set in a radial direction from a focus of expansion (FOE) of the earlier image is moved in the same direction on the latter image. An optical flow vector of a target point is defined by a vector connecting the midpoint of a location of a subsequent window and the midpoint of a location at which the long and narrow window is set in the earlier image. The location of the subsequent window is determined by minimizing the sum of absolute values of differences in luminance between the long and narrow window and an area of the latter image overlapping such long and narrow window. The optical flow calculation area is limited to areas in which a difference in luminance between the earlier and latter images exceeds a predetermined threshold, and any influence from scenes outside the road boundaries and from lane-dividing lines or other symbols drawn on the road surface is removed in calculating the optical flow.

    摘要翻译: 用于移动车辆的监视方法允许根据光流矢量的大小确定危险的存在。 光流矢量被检测为在两个图像上拍摄的物体上的单个点的移动,其中在先前时间拍摄一个图像,并且在一系列图像中在随后的时间拍摄另一个图像。 从较早的图像的扩展焦点(FOE)沿径向设置的长而窄的窗口在后一图像上沿相同的方向移动。 目标点的光流向量由连接后续窗口的位置的中点和在较早的图像中设置长而窄的窗口的位置的中点的向量定义。 后续窗口的位置通过最小化长和窄窗口之间的亮度差的绝对值与后一图像的与这样长而窄的窗口重叠的区域的绝对值之和来确定。 光流计算区域限于前者和后一图像之间的亮度差异超过预定阈值的区域,并且道路边界以外的场景和路面划分线或其他路面上绘制的其他符号的任何影响是 在计算光流时被去除。

    Video data reproduction apparatus
    2.
    发明授权
    Video data reproduction apparatus 有权
    视频数据再现装置

    公开(公告)号:US08170403B2

    公开(公告)日:2012-05-01

    申请号:US11384132

    申请日:2006-03-17

    申请人: Norio Kitamura

    发明人: Norio Kitamura

    IPC分类号: H04N5/783

    摘要: A video data reproduction apparatus includes a selecting portion that selects a notification image associated in advance with a prescribed instruction when there is input of the prescribed instruction from a user while video data is being output, a generating portion that generates data for display by superposing specific information regarding a reproduction state of the video data in association with the prescribed instruction on the selected notification image, and a combining portion that combines the data for display generated by the generating portion with the video data.

    摘要翻译: 视频数据再现装置包括:选择部分,当在输出视频数据时从用户输入了规定的指令时,选择与预定指令相关联的通知图像;生成部,其生成用于显示的数据, 关于与所选择的通知图像上的规定指令相关联的视频数据的再现状态的信息,以及将由生成部分生成的用于显示的数据与视频数据组合的组合部分。

    Video data reproduction apparatus
    3.
    发明申请
    Video data reproduction apparatus 有权
    视频数据再现装置

    公开(公告)号:US20060210240A1

    公开(公告)日:2006-09-21

    申请号:US11384132

    申请日:2006-03-17

    申请人: Norio Kitamura

    发明人: Norio Kitamura

    IPC分类号: H04N5/93

    摘要: A video data reproduction apparatus includes a selecting portion that selects a notification image associated in advance with a prescribed instruction when there is input of the prescribed instruction from a user while video data is being output, a generating portion that generates data for display by superposing specific information regarding a reproduction state of the video data in association with the prescribed instruction on the selected notification image, and a combining portion that combines the data for display generated by the generating portion with the video data.

    摘要翻译: 视频数据再现装置包括:选择部分,当在输出视频数据时从用户输入了规定的指令时,选择与预定指令相关联的通知图像;生成部,其生成用于显示的数据, 关于与所选择的通知图像上的规定指令相关联的视频数据的再现状态的信息,以及将由生成部分生成的用于显示的数据与视频数据组合的组合部分。