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1. 发明授权

US5940537A Method and system for compensating for geometric distortion of images 失效
标题翻译：补偿图像几何失真的方法和系统
公开(公告)号：US5940537A
公开(公告)日：1999-08-17
申请号：US586058
申请日：1996-01-16
申请人： Joel H. Regen , George Moore
发明人： Joel H. Regen , George Moore
IPC分类号： G06K9/42 , G06K9/76
CPC分类号： G06K9/42
摘要： A method of and system for compensating for geometric distortion in a two-dimensional image finds fiducial marks in the image plane corresponding to fiducial marks in the object plane. The invention includes performing a matched filter search to locate corner fiducials from an object plane in the image plane. Locating the corner fiducials permits locating the remaining fiducials in the image plane. A centroid calculation makes the location of the fiducials in the image plane more precise and permits the generation of a solution matrix. The solution matrix and a trajectory engine map the pixels in the image plane to compensate for magnification, tilt, pin cushion, barrel, and other types of geometric distortions.
摘要翻译：用于补偿二维图像中的几何失真的方法和系统在与对象平面中的基准标记相对应的图像平面中找到基准标记。本发明包括执行匹配滤波器搜索以从图像平面中的物体平面定位角基准。找到角基准点可以将剩余的基准点定位在图像平面中。质心计算使得基准点在图像平面中的位置更精确，并允许生成解矩阵。解决方案矩阵和轨迹引擎映射图像平面中的像素以补偿放大倍数，倾斜度，针坐垫，筒体和其他类型的几何失真。

2. 发明授权

US5511058A Distortion correction of a reconstructed holographic data image 失效
标题翻译：重建全息数据图像的失真校正
公开(公告)号：US5511058A
公开(公告)日：1996-04-23
申请号：US173668
申请日：1993-12-23
申请人： Thomas A. Visel , John Stockton , Joel H. Regen
发明人： Thomas A. Visel , John Stockton , Joel H. Regen
IPC分类号： G03H1/02 , G03H1/22 , G11B7/0065 , G11B13/04 , G11B7/00
CPC分类号： G11B13/045 , G03H1/22 , G11B7/0065
摘要： A detected image output by a holographic storage system is comprised of a grid of dark and light spots, representing high and low logic states. The image is superimposed onto a grid of detector elements or pixels in a detector. Each of the data bits is represented by a bit image or bixel, which is oversampled by a factor of two along the x- and y-axis by the pixels. A state machine is utilized to generate expected states for each of the pixels and then an energy shifting operation performed to shift energy from a pixel having a higher than expected output value to a pixel having a lower than expected output value. This operation can result in energy being shifted from the left to the right or the right to the left. Column synchronization is performed by defining a set of pixels in a row for each column as a segment with an associated parity bit and row number. Each segment may be output as validated, or may be retained in a buffer until all previous segments in a row have been accumulated and/or output.
摘要翻译：由全息存储系统输出的检测到的图像由暗和光斑的网格组成，表示高和低逻辑状态。图像叠加在检测器中的检测器元件或像素的网格上。每个数据位由位图像或像素表示，该像素或像素通过像素沿x轴和y轴过采样二分之一。状态机用于产生每个像素的预期状态，然后执行能量移动操作，以将能量从具有高于预期输出值的像素移位到具有低于预期输出值的像素。这种操作可导致能量从左向右移动或向右移动。通过将每列的行中的一组像素定义为具有关联的奇偶校验位和行号的段来执行列同步。可以将每个段输出为有效的，或者可以保留在缓冲器中，直到已经累积和/或输出一行中的所有先前段。

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