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公开(公告)号：EP2247982A4
公开(公告)日：2017-11-01
申请号：EP08839977
申请日：2008-10-17
申请人： LOOK DYNAMICS INC
发明人： CRILL RIKK
CPC分类号： G06K9/58 , G06K9/745 , G06K2009/585
摘要： Non-rigidly coupled, overlapping, non-feedback optical systems for spatial filtering of Fourier transform optical patterns and image shape characterization comprises a first optical subsystem that includes a lens for focusing a polarized, coherent beam to a focal point, an image input device that spatially modulates phase positioned between the lens and the focal point, and a spatial filter at the Fourier transform pattern, and a second optical subsystem overlapping the first optical subsystem includes a projection lens and a detector. The second optical subsystem is optically coupled to the first optical subsystem.
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2.发明公开
公开(公告)号：EP2085811A1
公开(公告)日：2009-08-05
申请号：EP07831634.6
申请日：2007-11-12
发明人： IDE, Masafumi
CPC分类号： G02F1/1313 , G02F1/292 , G06K9/745
摘要： A liquid crystal spatial light modulator for adjusting an optical signal is configured in such a manner that a region of one element is partitioned into two regions so as to perform intensity modulation in one region and phase modulation in the other region. Since the region for performing the intensity modulation and the region for performing the phase modulation can be formed by partitioning one region of the liquid crystal spatial light modulator, only one element allows adjusting functions, both the optical signal intensity modulation and phase modulation.
摘要翻译： 用于调整到光信号的液晶空间光调制器被配置在寻求的方式做了一个元件的区域被划分成两个区域，以便在一个区域和相位调制中的其他区域进行强度调制。 由于用于进行强度调制和用于执行相位调制的区域中的区域可通过划分液晶空间光调制器的一个区域中形成，只有一个元素允许调整的功能，这两个光信号的强度调制和相位调制。
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3.发明公开FREQUENCY-MULTIPLEXED LOGIC, AMPLIFICATION, AND ENERGY BEAM CONTROL USING INTERFERENCE 失效FREQUENZMULITPLEXLOGIK，放大和能源控制通过干扰一捆
公开(公告)号：EP0807293A1
公开(公告)日：1997-11-19
申请号：EP95944131.0
申请日：1995-12-14
发明人： HAIT, John, N.
摘要： A means and method are disclosed for performing frequency-multiplexed logic, amplification, and energy beam control functions on individual channels simultaneously within a single device by using a plurality of frequency-multiplexed inputs (10, 11), each having beam sets of matching channel frequencies. A set of interference images (12, 13), one for each channel, are simultaneously produced, and energy from the images is separated to produce a frequency-multiplexed output (17). The individual functions performed on individual channels are the result of constructive and destructive interference within each channel's image.
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4.发明公开
公开(公告)号：EP0473121A3
公开(公告)日：1993-05-12
申请号：EP91114384.0
申请日：1991-08-27
IPC分类号： G06F15/332 , G06K9/58 , G06E3/00
摘要： A vision recognizing method includes a logarithmic polar coordinate transforming method includes the steps of storing information (f) of an input image, generating complex amplitude information (f * A * T) based on the information (f) of the input image, phase information (A), and amplitude information (T), an amplitude of which changes according to distance between each point composing the amplitude information (T) and origin of logarithmic polar coordinate, and Fourier-transforming the complex amplitude information (f * A * T). An optical information processing apparatus is for carrying out the method by combination of lenses and liquid crystal displays.
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5.发明公开Logarithmic polar coordinate transforming method, vision recognizing method, and optical information processing apparatus 失效对数关系变换，Visionserkennungsverfahren und optischesInformationsverarbeitungsgerät。
公开(公告)号：EP0473121A2
公开(公告)日：1992-03-04
申请号：EP91114384.0
申请日：1991-08-27
IPC分类号： G06F15/332 , G06K9/58 , G06E3/00
摘要： A vision recognizing method includes a logarithmic polar coordinate transforming method includes the steps of storing information (f) of an input image, generating complex amplitude information (f * A * T) based on the information (f) of the input image, phase information (A), and amplitude information (T), an amplitude of which changes according to distance between each point composing the amplitude information (T) and origin of logarithmic polar coordinate, and Fourier-transforming the complex amplitude information (f * A * T). An optical information processing apparatus is for carrying out the method by combination of lenses and liquid crystal displays.
摘要翻译： 一种视觉识别方法包括对数极坐标变换方法，包括以下步骤：存储输入图像的信息（f），基于输入图像的信息（f）产生复幅度信息（f * A * T），相位信息 （A）和幅度信息（T），其幅度根据构成振幅信息（T）的每个点与对数极坐标的原点之间的距离而变化，并且对复数振幅信息（f * A * T ）。 光学信息处理装置用于通过透镜和液晶显示器的组合来执行该方法。
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公开(公告)号：EP0469148A1
公开(公告)日：1992-02-05
申请号：EP91907489.0
申请日：1991-02-19
摘要： L'invention se rapporte à un système de corrélation optique à image améliorée, qui comprend: un système optique servant à former un faisceau image d'intérêt et à diviser ce faisceau image en des premier et second faisceaux images (35, 38), ayant chacun une composante de polarisation différente; un modulateur de lumière spatial (8) pour chacun des premier et second faisceaux images, qui sert à moduler dans l'espace un faisceau laser cohérent au moyen du premier ou du second faisceau image; un rotateur de polarisation (9) pour au moins l'un des premier et second faisceaux images, après le traitement de celui-ci par le modulateur de lumière spatial en vue de régler les polarisations relatives des premier et second faisceaux images pour quelles soient coplanaires; un organe servant à recombiner (6) les premier et second faisceaux images polarisés coplanaires, en vue de former un faisceau recombiné; une lentille à transformation de Fourier (14) sur laquelle est dirigé le faisceau recombiné, en vue de former une image de transformation de Fourier du faisceau recombiné; un filtre apparié (16) sur lequel est dirigée la sortie à transformation de Fourier de la lentille; une lentille à tranformation inverse (18) sur laquelle la sortie du filtre apparié est incidente; et un organe photodétecteur (20) servant à détecter la sortie de cette lentille de transformation inverse dans le plan de sortie de corrélation du corrélateur optique.
摘要翻译： 一种改进的图像光学相关系统包括：光学系统，用于形成感兴趣的图像光束并将图像光束分成第一和第二图像光束（35,38）， 每个不同的偏振分量; 用于第一和第二图像光束中的每一个的空间光调制器（8），用于使用第一或第二图像光束空间调制相干激光束; 偏振旋转器（9），用于所述第一中的至少一个和第二梁的图像，处理后由空间光调制器，其用于调节所述第一和第二光束的相对偏振，其是共面的图像，以 ; 用于重新组合（6）第一和第二共面偏振图像光束以形成重组光束的器件; 一个傅立叶变换透镜（14），在该傅立叶变换透镜上引导复合光束以形成重组光束的傅里叶变换图像; 一个匹配滤波器（16），透镜的傅里叶变换输出在该滤波器上被引导; 逆变换透镜（18），成对滤波器的输出入射到该逆变换透镜上; 和一个光检测器部件（20），用于在光相关器的相关输出平面中检测该反变换透镜的输出。
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公开(公告)号：EP2107498B1
公开(公告)日：2013-07-31
申请号：EP09008873.3
申请日：2000-08-08
CPC分类号： G06K9/745 , G06E3/001 , G06K9/748 , G06K19/086
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公开(公告)号：EP1218850A4
公开(公告)日：2006-11-22
申请号：EP00953932
申请日：2000-08-08
申请人： PHYSICAL OPTICS CORP
CPC分类号： G06K9/745 , G06E3/001 , G06K9/748 , G06K19/086
摘要： An authentication system using a correlator that correlates an input (84) with a reference (88) wherein at least one of the input and reference comprises a phase volume mask having structures that are each less than about six microns in size and can have an aspect ratio (AR) greater than 1:1 so as to produce a phase encoded random pattern having millions of combinations in a mask that is as small as one square millimeter. The random pattern can be convolved with a second pattern, such as a biometric pattern, to produce a phase convolved mask. The correlator (82) preferably is a nonlinear joint transform correlator that can use 'chirp' encoding. The correlator optically Fourier transforms (98) images of the reference and input that are thereafter nonlinearly transformed and inverse Fourier transformed by a processor (104) to determine authenticity (106, 110). A spatial light modulator (SLM) can be used as an input or reference.
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9.发明公开Optical pattern recognition with a binary phase-only filter for image tracking 审中-公开通过用于Bildvervolgung二进制相滤波器手段光学模式识别
公开(公告)号：EP1632883A3
公开(公告)日：2006-03-15
申请号：EP05025420.0
申请日：1998-09-24
申请人： Qinetiq Limited
摘要： The use of binary phase information results in a degradation of performance due to the coarseness of the quantisation of the phase data. Furthermore, binary data results in two correlation peaks being formed in the output plane of the Fourier Transforming lens.
Since it is often required to track a spot on a moving sought object present in the scene. It is convenient to make this spot the centre of the reference image (used to create the reference pattern) for each scale/orientation of the reference object sought. In this case when the spot on the reference object is in the centre of the input plane, the output correlation peak is at the centre of the output plane. Thus, in the tracking process the objective is to keep the correlation peak at the centre of the output plane when the desired region of the scene object is always centrally aligned with a tracking device (e.g. a camera or drill). In the case of the pattern recognition system of the present invention employing binary phase SLMs, this has the added advantage that in these circumstances the output peak has full intensity, the two symmetrical peaks discussed above merging into one strong central peak. This fact can be used as an aid to reference object identification and tracking and exploits the fact that the output peak is not split when the location of the scene reference object matches that of the reference perfectly. Of course, implicit in this statement is the fact that the reference object is identified in the processor.-
10.发明公开COMPOSITE DIFFRACTION GRATINGS FOR SIGNAL PROCESSING AND OPTICAL CONTROL APPLICATIONS 审中-公开复合衍射信号处理和光学系统的应用
公开(公告)号：EP1060427A4
公开(公告)日：2006-01-25
申请号：EP99901373
申请日：1999-01-07
CPC分类号： G06K9/745 , G02B5/1819 , G02B6/29311 , G02B2006/12107 , H04J14/005
摘要： The present invention provides a composite grating structure that performs a programmed complex-valued, spectral filtering function on an input optical signal. The grating consists of a plurality of subgratings. Each subgrating controls the diffraction of a specific optical subbandwidth of light from an operative input direction to an operative output direction imparting a controllable amplitude and phase change onto the specific subbandwidth of light whose diffraction it controls within the overall operative bandwidth. The set of subgratings comprising the composite grating collectively controls the diffraction of an operative bandwidth of light from an operative input direction to an operative output direction. Each composite grating is programmed through their construction or through their dynamic modification to provide desired spectral filtering functions. While the composite gratings can be employed for general spectral filtering applications, they hold especially attractive potential in the area of optical waveform processing, generation, and detection.
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