公开(公告)号：US20160335504A1

公开(公告)日：2016-11-17

申请号：US15110937

申请日：2015-02-05

Applicant: THALES

Inventor： Thierry MIDAVAINE ,  Olivier GARIN

IPC: G06K9/00 ,  G01J5/02 ,  G01J1/02 ,  G06T7/00

CPC classification number: G06K9/00771 ,  F41G3/147 ,  G01J1/0219 ,  G01J1/0242 ,  G01J1/0488 ,  G01J1/4228 ,  G01J5/0066 ,  G01J5/025 ,  G01J5/0275 ,  G01J5/602 ,  G01J2005/0077 ,  G06K9/00624 ,  G06T7/74 ,  G06T2207/10048 ,  G06T2207/30212 ,  G06T2207/30232

Abstract: The subject of the invention is a method for detecting and classifying events of a scene by means of a single-pupil imaging system equipped with a VisNIR detector in the 0.6 μm-1.1 μm band and with an SWIR detector, which comprises steps of acquiring synchronized VisNIR and SWIR successive 2D images, of displaying the VisNIR images, and of processing these images, which consists in: comparing the SWIR images so as to determine, for each pixel, the variation in illumination from one SWIR image to another and the peak value of these SWIR illuminations, if this variation in SWIR illumination is greater than a threshold, then an event associated with said pixel is detected and: its date, its temporal shape and its duration are determined, in the VisNIR images, the coordinates are determined of the corresponding pixel for which: the variation in the illumination from one VisNIR image to another and the peak value of these VisNIR illuminations are calculated, and these variations in SWIR and VisNIR illumination and their peak values are compared so as to estimate a temperature of the event, the distance of the corresponding point of the scene is estimated so as to calculate the intensity of the event on the basis of the SWIR and VisNIR illuminations and on the basis of this distance, the total energy of the event is estimated on the basis of its temporal shape and of its intensity, the event is classified as a function of its duration, its temperature, its intensity and its energy, the previous steps are repeated for another pixel of the SWIR images.

Abstract translation: 本发明的主题是通过配备有0.6μm-1.1μm带中的VisNIR检测器和SWIR检测器的单瞳孔成像系统来检测和分类场景的事件的方法，其包括获取同步的步骤 VisNIR和SWIR连续2D图像，显示VisNIR图像以及处理这些图像，其中包括：比较SWIR图像，以便为每个像素确定从一个SWIR图像到另一个SWIR图像的照明变化以及峰值 如果SWIR照明中的这种变化大于阈值，则检测到与所述像素相关联的事件，并且在VisNIR图像中确定其日期，时间形状及其持续时间，坐标被确定为 对应的像素：计算从一个VisNIR图像到另一个VisNIR图像的照明的变化以及这些VisNIR照明的峰值，并且这些变化在SWIR a 和VisNIR照度和它们的峰值进行比较，以估计事件的温度，估计场景的对应点的距离，以便基于SWIR和VisNIR照明计算事件的强度，并且 在这个距离的基础上，事件的总能量是根据其时间形状和强度来估计的，事件被分类为其持续时间，温度，强度和能量的函数，前面的步骤是 对于SWIR图像的另一个像素重复。

公开(公告)号：US20220260415A1

公开(公告)日：2022-08-18

申请号：US17627573

申请日：2020-07-15

Applicant: THALES

Inventor： Paul THIBOUT ,  Thierry MIDAVAINE ,  Guillaume BLOOM ,  Yves COURCOL ,  Olivier VERDY

IPC: G01J1/42 ,  G01J1/04

Abstract: The present invention relates to a device for classifying a light source, comprising: a sensor adapted to receive a luminous flux emitted by a light source, the sensor comprising a plurality of pixels grouped in sets, each set comprising a first pixel and a second pixel adjacent to the first pixel, each first pixel being adapted to generate a first signal relating to a first portion of luminous flux in a first spectral band received by said first pixel, each second pixel being adapted to generate a second signal relating to a second portion of luminous flux in a second spectral band received by said second pixel, a computer configured to compare the first and second signals and to classify the emitting light source according to the result of the comparison.

公开(公告)号：US20210278639A1

公开(公告)日：2021-09-09

申请号：US15104933

申请日：2014-12-04

Applicant: THALES

Inventor： Catherine ANTIER ,  Thierry MIDAVAINE

IPC: G02B13/06 ,  G02B27/10 ,  G02B13/14

Abstract: An imaging module comprises: a single-pupil head component with hyper-hemispherical entrance field with refractive entrance surface, concave exit face, a refractive central zone and reflective peripheral zone, and comprising a secondary mirror, an aberrations corrector which comprises an aspherical lens, a focusing objective, an aperture diaphragm between the aberrations corrector and the objective. The head component is quasi-afocal in the vicinity of the field of 90° angular radius, its entrance surface has a ½ vertex angle of smaller than 30°, the secondary mirror is aspherical with variable local focal length with a maximum local power for a zone used by a field of 90° angular radius and minimum smaller by at least a factor of 2 for a zone used by a field of angular radius smaller than 20°.

公开(公告)号：US20220260413A1

公开(公告)日：2022-08-18

申请号：US17627435

申请日：2020-07-13

Applicant: THALES

Inventor： Ludovic PERRUCHOT ,  Thierry MIDAVAINE ,  Guillaume BLOOM ,  Jérôme ACHART ,  Marc THILLOT ,  Tugdual PERROT ,  Vincent LIGERET

IPC: G01J1/42

Abstract: The present invention relates to an optical pulse detection device, the device comprising a sensor having a plurality of pixels, each pixel comprising: a receiver configured to receive optical pulses and generate an electrical signal, an event detection unit comprising a frequency filter having an adjustable cut-off frequency defining a passband for the event detection unit, the adjustable cut-off frequency being such that the upper bound of the passband is greater than or equal to 1 Megahertz, the detection unit being configured to detect variations in the electrical signal generated by the receiver only when the frequency in the frequency domain of said variations is within the passband of the event detection unit, and a timing unit configured to date each change in the electrical signal detected by the event detection unit.

公开(公告)号：US20150350568A1

公开(公告)日：2015-12-03

申请号：US14654266

申请日：2013-12-17

Applicant: THALES

Inventor： Thierry MIDAVAINE

IPC: H04N5/33 ,  H04N9/04 ,  H04N5/247

CPC classification number: H04N5/33 ,  H04N5/247 ,  H04N9/045

Abstract: A method is provided for detecting a target not emitting in the wavelength region lying between 1 μm and 1.9 μm. The target is situated in a night sky luminous environment of level less than or equal to 4. Use is made of an imaging device of focal length f and of pupil diameter D, comprising at least one detector comprising types of pixels configured to operate in the wavelength region lying between 1 μm and 1.9 μm, the detectors exhibiting a noise level of less than 0.6×1015/(f/D)2, and from the image obtained by this device is extracted at least one negative-contrast zone, that is to say a black zone on a bright background corresponding to the presence of the target in the night sky of level less than or equal to 4.

Abstract translation: 提供了一种用于检测在1μm和1.9μm之间的波长区域中不发射的靶的方法。 目标位于小于或等于4的夜空发光环境中。使用焦距f和瞳孔直径D的成像装置，其包括至少一个检测器，包括被配置为在 波长区域位于1μm和1.9μm之间，检测器的噪声水平小于0.6×1015 /（f / D）2，并且从该装置获得的图像中提取至少一个负对比度区域，即 在明亮的背景上说黑色区域对应于在夜空中的目标的存在小于或等于4。