公开(公告)号：US08554009B2

公开(公告)日：2013-10-08

申请号：US12228495

申请日：2008-08-13

Applicant: Yuqin Zong ,  Steven W. Brown ,  Keith R. Lykke ,  Yoshihiro Ohno

Inventor： Yuqin Zong ,  Steven W. Brown ,  Keith R. Lykke ,  Yoshihiro Ohno

IPC: G06K9/40

CPC classification number: G02B27/0018 ,  G01J1/08 ,  G01J1/4228 ,  G01J3/28 ,  H04N5/217 ,  H04N5/23229 ,  H04N17/002

Abstract: A simple matrix method and computer program product for stray-light correction in imaging instruments is provided. The stray-light correction method includes receiving raw signals from an imaging instrument and characterizing the imaging instrument for a set of point spread functions. For high resolution imaging instruments, the raw signals may be compressed to reduce the size of the correction matrix. Based on stray-light distribution functions derived from the point spread functions, a correction matrix is derived. This fast correction is performed by a matrix multiplication to the measured raw signals, and may reduce stray-light errors by more than one order of magnitude. Using the stray-light corrected instrument, significant reductions may be made in overall measurement uncertainties in radiometry, colorimetry, photometry and other applications. Because the PSFs may include other types of undesired responses, the stray-light correction also eliminates other types of errors, e.g., interreflection between a CCD and the detector window.

公开(公告)号：US20090059210A1

公开(公告)日：2009-03-05

申请号：US12228495

申请日：2008-08-13

Applicant: Yuqin Zong ,  Steven W. Brown ,  Keith R. Lykke ,  Yoshihiro Ohno

Inventor： Yuqin Zong ,  Steven W. Brown ,  Keith R. Lykke ,  Yoshihiro Ohno

IPC: G02B3/08 ,  G06K9/36 ,  G06F7/32 ,  G01R35/00

CPC classification number: G02B27/0018 ,  G01J1/08 ,  G01J1/4228 ,  G01J3/28 ,  H04N5/217 ,  H04N5/23229 ,  H04N17/002

Abstract: A simple matrix method and computer program product for stray-light correction in imaging instruments is provided. The stray-light correction method includes receiving raw signals from an imaging instrument and characterizing the imaging instrument for a set of point spread functions. For high resolution imaging instruments, the raw signals may be compressed to reduce the size of the correction matrix. Based on stray-light distribution functions derived from the point spread functions, a correction matrix is derived. This fast correction is performed by a matrix multiplication to the measured raw signals, and may reduce stray-light errors by more than one order of magnitude. Using the stray-light corrected instrument, significant reductions may be made in overall measurement uncertainties in radiometry, colorimetry, photometry and other applications. Because the PSFs may include other types of undesired responses, the stray-light correction also eliminates other types of errors, e.g., interreflection between a CCD and the detector window.

Abstract translation: 提供了一种用于成像仪器中的杂散光校正的简单矩阵方法和计算机程序产品。 杂散光校正方法包括从成像仪器接收原始信号并表征一组点扩散函数的成像仪器。 对于高分辨率成像仪器，可以压缩原始信号以减小校正矩阵的大小。 基于从点扩散函数导出的散射光分布函数，导出校正矩阵。 这种快速校正通过与所测量的原始信号的矩阵乘法来执行，并且可以将杂散光误差减少超过一个数量级。 使用杂散光校正仪器，可以在辐射测量，比色法，光度测定和其他应用中的总体测量不确定度方面显着降低。 因为PSF可能包括其他类型的不期望的响应，所以杂散光校正也消除了其它类型的错误，例如CCD和检测器窗口之间的相互反射。