公开(公告)号：US20050023356A1

公开(公告)日：2005-02-03

申请号：US10630062

申请日：2003-07-29

Applicant: Christopher Wiklof ,  Clarence Tegreene

Inventor： Christopher Wiklof ,  Clarence Tegreene

IPC: G06K7/10

CPC classification number: G06K7/10851 ,  G06K7/10564

Abstract: A variable illuminator, for instance a device for scanning a beam of light, emits a selected amount of power to a plurality of spots across a field of view. The amount of power is determined as inversely proportional to the apparent brightness of each spot. In the case where the spot size is equal to pixel size, the device may operate with a non-imaging detector. In the case where pixel size substantially equals spot size, the output of the variable illuminator may be converged to produce a substantially uniform detector response and the image information is determined as the inverse of a frame buffer used to drive the variable illuminator. The illuminator and detector may be driven synchronously. In the case where an imaging detector is used, the variable illumination may be used to compress the dynamic range of the field of view to substantially within the dynamic range of the imaging detector.

Abstract translation: 可变照明器，例如用于扫描光束的装置，在整个视野内向多个点发射选定量的功率。 功率量被确定为与每个点的表观亮度成反比。 在斑点尺寸等于像素尺寸的情况下，该装置可以用非成像检测器操作。 在像素尺寸基本上等于光斑尺寸的情况下，可变焦照明器的输出可以被收敛以产生基本均匀的检测器响应，并且图像信息被确定为用于驱动可变照明器的帧缓冲器的倒数。 照明器和检测器可以同步地驱动。 在使用成像检测器的情况下，可变照明可以用于将视场的动态范围压缩到基本上在成像检测器的动态范围内。