Methods and apparatus for generating multi-level graphics data
    1.
    发明授权
    Methods and apparatus for generating multi-level graphics data 有权
    用于生成多级图形数据的方法和装置

    公开(公告)号:US07190839B1

    公开(公告)日:2007-03-13

    申请号:US10171047

    申请日:2002-06-12

    IPC分类号: G06K9/36

    CPC分类号: G06T3/4023 G09G2340/0407

    摘要: A technique generates a pyramid of image tiles to represent a source image at different resolutions. A base image tile stores, in a plurality of elements, an “on” state or an “off” state to represent the source image at a first resolution. Additional image tiles, with image resolutions lower than the resolution of the base image tile, are generated. The base image tile is divided into groupings of elements, such that each level of the pyramid of image tiles is generated by mapping a grouping of elements from the base image tile to an image tile at different levels of the pyramid. A threshold density of elements in the grouping elements is selected. If the grouping of elements in the base image tile for a level has a threshold density of “on” elements, the image data for the element in the current level is set to an “on” state. Conversely, the image data for the element is set to an “off” state if the threshold density of “on” elements in the base image tile grouping is less than the threshold density.

    摘要翻译: 一种技术生成图像拼块的金字塔来表示不同分辨率的源图像。 基础图像瓦片在多个元件中存储以“第一分辨率”表示源图像的“开”状​​态或“关”状态。 生成图像分辨率低于基础图像图像分辨率的附加图像图块。 基本图像瓦片被划分为元件的分组,使得通过将来自基础图像瓦片的元素分组映射到金字塔的不同级别的图像瓦片来生成图像瓦片的金字塔的每个级别。 选择分组元素中的元素的阈值密度。 如果级别的基础图像块中的元素分组具有阈值密度为“开”元素,则将当前级别中的元素的图像数据设置为“开”状态。 相反,如果基本图像瓦片组合中的“开启”元素的阈值密度小于阈值密度,则将元素的图像数据设置为“关闭”状态。

    Methods and apparatus for generating pixel data for multi-layer source images
    2.
    发明授权
    Methods and apparatus for generating pixel data for multi-layer source images 有权
    用于生成多层源图像的像素数据的方法和装置

    公开(公告)号:US07212217B1

    公开(公告)日:2007-05-01

    申请号:US10170946

    申请日:2002-06-12

    IPC分类号: G09G5/00 G09G5/30

    CPC分类号: G06T17/005

    摘要: A graphics system readily activates and deactivates layers of a multi-layer source image. Image data, such as a multi-layered integrated circuit (“IC”) design, is generated for a multi-layer source image. A pyramid of image tiles defines “on” and “off” states for elements that represent the source image. A bit plane identifies values for the elements for each layer of the source image. Mask image data is generated to zero image data associated with at least one layer of the bit plane. The graphics system generates pixel data from the mask image data, and renders the pixel data on an output display.

    摘要翻译: 图形系统容易地激活和去激活多层源图像的层。 为多层源图像生成诸如多层集成电路(“IC”)设计的图像数据。 图像块的金字塔定义了代表源图像的元素的“开”和“关”状态。 位平面识别源图像的每个层的元素的值。 生成掩模图像数据以使与位平面的至少一层相关联的图像数据为零。 图形系统从掩模图像数据生成像素数据,并将像素数据呈现在输出显示上。

    Haptic computer output device
    4.
    发明授权
    Haptic computer output device 失效
    触觉电脑输出设备

    公开(公告)号:US5945978A

    公开(公告)日:1999-08-31

    申请号:US122412

    申请日:1993-09-28

    申请人: Richard Holmes

    发明人: Richard Holmes

    摘要: A haptic computer output device comprises a data glove 10 the finger and thumb extension 10A and 10B of which have spaced ring formations 13 and 14. Each ring formation 13 and 13 is formed with an inwardly-opening blind bore 21 spanned in gas-tight manner by a membrane 23 and conduits 20 within the ring formations selectively apply pressurised air to or relieve it from the bores 21 under the control of a valve assembly 34 in turn controlled by a computer 30. The computer generates images perceived on a visual system 32 by a wearer of the glove. Data concerning the spatial position and flexing of the glove 10 is transmitted via line 31 to the computer, which additionally generates a cursor on the visual system 32. When this interacts with other virtual objects to simulate a "touch" the appropriate bore 21 is inflated via valve assembly 34 to apply a tactile stimulus to the wearer of the glove.

    摘要翻译: PCT No.PCT / GB92 / 00729 Sec。 371日期:1993年9月28日 102(e)日期1993年9月28日PCT提交1992年4月21日PCT公布。 出版物WO92 / 18925 日期1992年10月29日触觉式计算机输出装置包括数据手套10,手指和拇指延伸部10A和10B具有间隔开的环形结构13和14.每个环形结构13和13形成有向内开口的盲孔21跨越 通过膜23以气密的方式,并且环形结构内的导管20在阀组件34的控制下选择性地将加压空气从孔21施加,然后由计算机30进行控制。计算机产生在 手套的佩戴者的视觉系统32。 关于手套10的空间位置和弯曲的数据经由线路31传送到计算机,计算机在视觉系统32上另外产生光标。当这与其他虚拟物体相互作用以模拟“触摸”时,适当的孔21被充气 通过阀组件34向手套的穿戴者施加触觉刺激。

    Binocular vision system of a head mounted display unit
    6.
    发明授权
    Binocular vision system of a head mounted display unit 失效
    头戴式显示单元的双目视觉系统

    公开(公告)号:US5835279A

    公开(公告)日:1998-11-10

    申请号:US395071

    申请日:1995-02-27

    摘要: An optical system comprising three lenses concentrically housed in a frame is aligned with a screen on which a televisual image of a virtual reality application is displayed. The compact and high power lenses permit the eye of a viewer when placed at eye position to have a wide field of view of the magnified virtual image of the screen. To train the eye of the user along the optical axis of the system the lenses vignette the image on the screen when the eye is not closely aligned with the axis. By plastics moulding one or more of the lenses so that they are of truncated form it is possible for injection points of the mould to be adjacent truncated side faces thereby permitting a balanced generally free flow of material through the mould cavity which results in minimal optical stresses in the finished lens.

    摘要翻译: 包括同心地容纳在框架中的三个透镜的光学系统与显示虚拟现实应用的视频图像的屏幕对齐。 当放置在眼睛位置时,小型和大功率镜片允许观看者的眼睛具有屏幕的放大的虚像的宽视场。 为了沿着系统的光轴训练用户的眼睛,当眼睛不与轴线紧密对准时,镜片使屏幕上的图像晕视。 通过塑料模制一个或多个透镜使得它们是截头形状的,模具的注射点可以与相邻的截面侧面成为可能,从而允许通过模腔的平衡的大体上自由流动的材料,这导致最小的光学应力 在成品镜头。