Method of decoding data encoded in a monochrome medium
    3.
    发明授权
    Method of decoding data encoded in a monochrome medium 有权
    对以单色介质编码的数据进行解码的方法

    公开(公告)号:US07177476B2

    公开(公告)日:2007-02-13

    申请号:US10086142

    申请日:2002-02-28

    IPC分类号: G06K9/36

    CPC分类号: H04N1/41 H04N1/40012 H04N1/64

    摘要: A method for decoding data that has been encoded in a monochrome medium utilizing the capability of the medium for grayscale resolution. A document is processed to provide an image in electronic format, in which each pixel has an assigned data value with a given bit depth. A mapping operation is performed for generating a monochrome data word (120), preferably having a reduced bit depth. The monochrome data word (120) can be used to encode multiple data fields (114, 116, 118). A printer (92) then produces a preserved document record (90) in which the appropriate monochrome data word (120) determines the grayscale value for each pixel. To decode the stored data, a scanner (86) is employed to obtain the grayscale value from the preserved document record (90). For each pixel, the grayscale value is then decomposed into multiple data fields (114, 116, 118), which can then be decoded to provide the information that was originally encoded.

    摘要翻译: 利用介质进行灰度分辨能力,对已经在单色介质中编码的数据进行解码的方法。 处理文档以提供电子格式的图像,其中每个像素具有给定位深度的分配的数据值。 执行映射操作以生成优选地具有减少的比特深度的单色数据字(120)。 单色数据字(120)可用于对多个数据字段(114,116,118)进行编码。 然后,打印机(92)产生保存的文档记录(90),其中适当的单色数据字(120)确定每个像素的灰度值。 为了对存储的数据进行解码,使用扫描器(86)从保存的文档记录(90)获得灰度值。 对于每个像素,灰度值然后被分解成多个数据字段(114,116,118),然后可以将其解码以提供最初被编码的信息。

    Automated fundus imaging system
    7.
    发明授权
    Automated fundus imaging system 失效
    自动眼底成像系统

    公开(公告)号:US07458685B2

    公开(公告)日:2008-12-02

    申请号:US11196824

    申请日:2005-08-03

    IPC分类号: A61B3/14

    CPC分类号: A61B3/14

    摘要: An apparatus for obtaining a retinal image of an eye has a control logic processor (214) for executing a sequence of operations for obtaining the image. A visual target (162) orients the eye of a patient when viewed. An indicator element (410) provides a signal that indicates that the patient is in position. A cornea focus detection section (450) indicates cornea focus, in cooperation with the control logic processor (214). An alignment actuator aligns the optical path according to a signal obtained from the cornea focus detection section (450). A retina focus detection section (452) detects retina focus in cooperation with the control logic processor (214). A focusing actuator (406) is controlled by instructions from the control logic processor (214) according to a signal obtained from the retina focus detection section (452). An image capture light source is energized by the control logic processor (214) for illuminating the retina.

    摘要翻译: 用于获得眼睛的视网膜图像的装置具有用于执行用于获得图像的操作序列的控制逻辑处理器(214)。 视觉目标(162)在观察时定位患者的眼睛。 指示元件(410)提供指示患者就位的信号。 与控制逻辑处理器(214)协作,角膜焦点检测部分(450)指示角膜焦点。 对准致动器根据从角膜焦点检测部(450)获得的信号对准光路。 视网膜聚焦检测部分(452)与控制逻辑处理器(214)协作检测视网膜聚焦。 聚焦致动器(406)由来自控制逻辑处理器(214)的指令根据从视网膜聚焦检测部分(452)获得的信号来控制。 图像捕获光源由控制逻辑处理器(214)激励,用于照亮视网膜。