公开(公告)号：US20140177973A1

公开(公告)日：2014-06-26

申请号：US14109810

申请日：2013-12-17

Applicant: THALES

Inventor： Jean-Michel GAUCEL ,  Claude ISRABIAN ,  Denis SIMEONI

IPC: G06T5/10 ,  G01J3/28

CPC classification number: G01J3/2823 ,  G01J3/453 ,  H04N5/23245 ,  H04N5/33 ,  H04N5/347 ,  H04N5/365 ,  H04N5/3651

Abstract: A method for correcting spatial response for an imaging Fourier transform spectrometer comprises the following steps: a prior step of calculation of the equalization parameters comprising a gain and an offset from data forming calibration scenes; a step of determination of equalization coefficients at a so-called pseudo superpixel level determining the gains and offsets at macropixel level from the data from a raw image that are collected by the imaging spectrometer in image mode, and gains and offsets determined in the prior step; and a step of equalization at pseudo superpixel level, applying the equalization coefficients to a macropixel from an acquisition in the interferogram mode of the imaging spectrometer in order to restore an equalized interferogram.

Abstract translation: 一种用于校正成像傅里叶变换光谱仪的空间响应的方法，包括以下步骤：计算包括增益的均衡参数的前一步骤和从形成校准场景的数据的偏移; 在所谓的伪超像素级别确定均衡系数的步骤，从图像模式中由成像光谱仪收集的原始图像的数据确定宏大像素级别的增益和偏移量，以及在先前步骤中确定的增益和偏移量 ; 以及在伪超像素级别进行均衡的步骤，将成像光谱仪的干涉图模式中的获取的均衡系数应用于宏像素，以恢复均衡的干涉图。

公开(公告)号：US20170134671A1

公开(公告)日：2017-05-11

申请号：US15344753

申请日：2016-11-07

Applicant: THALES

Inventor： Olivier PIGOUCHE ,  Jean-Michel GAUCEL ,  Arnaud LIOTARD

IPC: H04N5/341 ,  G06T1/00 ,  H04N5/347 ,  H04N7/20 ,  H04N5/369 ,  H04N5/374

CPC classification number: G03B15/006 ,  B64C2201/127 ,  B64D47/08 ,  G01C11/025 ,  G06T1/0007 ,  G06T2207/10032 ,  H04N5/2258 ,  H04N5/347

Abstract: A method for the acquisition of images by a spacer airborne optical instrument, comprises the following steps: a) acquisition, by the instrument, of a first image having a first field of view including the projection on the ground of the optical axis of the instrument and delimited by a first field edge, the first image being sampled spatially with a first sampling step; b) acquisition, by the same instrument, of a second image having a second field of view not including the projection on the ground of the optical axis of the instrument and extending beyond the first field edge, the second image being sampled spatially with a second sampling step greater than the first sampling step. Space or airborne optical instruments and an image acquisition system for implementing the method are provided.

公开(公告)号：US20140247990A1

公开(公告)日：2014-09-04

申请号：US14194377

申请日：2014-02-28

Applicant: THALES

Inventor： Jean-Michel GAUCEL ,  Denis SIMEONI ,  Sandrine MATHIEU

IPC: G06T7/00

CPC classification number: G06T7/0081 ,  G01J3/45

Abstract: A device and method for dynamically adapting spatial resolution for imager Fourier transform spectrometers makes it possible to acquire data in interferogram mode and image mode on survey points for an observed scene, each survey point being associated a matrix of macro-pixels and defined by a plurality of zones. For each survey point, analysis of the content of each zone is carried out on the basis of data of the image mode. Classification into clear zone or non-clear zone is carried out as a function of proportion of cloud, and clear-pixel data are generated on the basis of the sum of the data of the macro-pixels of the clear zone class. Survey point data are generated on the basis of the sum of the data of all the macro-pixels of the matrix associated with the survey point. The survey point and clear pixel data streams are transmitted to the ground.

Abstract translation: 用于动态适应成像仪傅里叶变换光谱仪的空间分辨率的装置和方法使得可以在观测场景的测量点上采集干涉图模式和图像模式中的数据，每个测量点与宏观像素的矩阵相关联并由多个 的区域。 对于每个测量点，根据图像模式的数据对每个区域的内容进行分析。 作为云的比例的函数进行到清晰区域或非清除区域的分类，并且基于清除区域类别的宏像素的数据的和来生成清除像素数据。 基于与测量点相关联的矩阵的所有宏观像素的数据之和生成测量点数据。 测量点和清晰像素数据流被传输到地面。