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31. 发明授权

US06971575B2 HAND-SUPPORTABLE PLANAR LASER ILLUMINATION AND IMAGING (PLIIM) DEVICE EMPLOYING A PAIR OF LINEAR LASER DIODE ARRAYS MOUNTED ABOUT AN AREA IMAGE DETECTION ARRAY, FOR ILLUMINATING AN OBJECT TO BE IMAGED WITH A PLURALITY OF OPTICALLY-COMBINED SPATIALLY-INCOHERENT PLANAR LASER ILLUMINATION BEAMS (PLIBS) SCANNED THROUGH THE FIELD OF VIEW (FOV) OF SAID AREA IMAGE DETECTION ARRAY, AND REDUCING THE SPECKLE-PATTERN NOISE POWER IN DETECTED 2-D IMAGES BY TEMPORALLY-AVERAGING DETECTED SPECKLE-NOISE PATTERNS 失效
标题翻译：手持式平面激光照明和成像（PLIIM）装置使用线性激光二极管对阵列安装在区域图像检测阵列上，用于照射与多个光学组合的空间无关的平面激光照射束（图1） PLIBS）通过图像区域图像检测阵列的视场（FOV）扫描，并通过临时平均检测的带状噪声模式降低检测到的二维图像中的带状图案噪声
公开(公告)号：US06971575B2
公开(公告)日：2005-12-06
申请号：US10118850
申请日：2002-04-08
申请人： Constantine J. Tsikos , C. Harry Knowles , Xiaoxun Zhu , Michael D. Schnee , Allan Wirth , Timothy A. Good
发明人： Constantine J. Tsikos , C. Harry Knowles , Xiaoxun Zhu , Michael D. Schnee , Allan Wirth , Timothy A. Good
IPC分类号： G02B6/42 , G02B27/48 , G06C11/08 , G06F17/00 , G06K7/10 , G06K7/14 , G06K9/22 , G07B15/06 , H01S3/00 , H01S3/08 , H01S5/00 , H01S5/022 , H01S5/40
CPC分类号： G06K7/10 , G02B19/0014 , G02B19/0052 , G02B19/0085 , G02B19/009 , G02B19/0095 , G02B26/10 , G02B27/095 , G02B27/48 , G06K7/10594 , G06K7/10732 , G06K7/146 , G06K9/26 , G06K9/325 , H01S5/005 , H01S5/02248 , H01S5/4025
摘要： A hand-supportable area-type planar laser illumination and imaging (PLIIM) based device comprising an area-type image formation and detection (IFD) module having a 2-D array of image detection elements. The IFD module also includes image formation optics having a 3-D field of view (FOV). The 3-D FOV focuses a 2-D image of said object onto the 2-D array of image detection elements. A pair of planar laser illumination arrays (PLIAs) are arranged on opposite sides of the linear image formation and detection module, and produce a plurality of spatially-incoherent planar laser illumination beam (PLIB) components that are optically combined with respect to other PLIB components so as to produce a composite PLIB. The composite PLIB is automatically swept through the 3-D field of view so that the composite PLIB is arranged in a coplanar relationship with at least a portion of the 3-D FOV.
摘要翻译：一种手持式区域型平面激光照明和成像（PLIIM）的装置，其包括具有图像检测元件的2-D阵列的区域型图像形成和检测（IFD）模块。 IFD模块还包括具有3-D视场（FOV）的图像形成光学器件。 3-D FOV将所述对象的2-D图像聚焦到图像检测元件的2-D阵列上。一对平面激光照明阵列（PLIA）布置在线性图像形成和检测模块的相对侧上，并且产生多个相对于其它PLIB组件光学组合的空间非相干平面激光照明光束（PLIB）部件以便生产复合PLIB。复合PLIB自动扫过3-D视野，使得复合PLIB与3-D FOV的至少一部分以共面关系排列。

32. 发明授权

US07070107B2 Led-based planar light illumination and imaging (PLIIM) systems 失效
标题翻译：基于LED的平面光照明和成像（PLIIM）系统
公开(公告)号：US07070107B2
公开(公告)日：2006-07-04
申请号：US10156705
申请日：2002-05-24
申请人： Constantine J. Tsikos , Timothy A. Good , Michael D. Schnee , Xiaoxun Zhu , Thomas Amundsen , C. Harry Knowles
发明人： Constantine J. Tsikos , Timothy A. Good , Michael D. Schnee , Xiaoxun Zhu , Thomas Amundsen , C. Harry Knowles
IPC分类号： G06K7/10
CPC分类号： G02B19/0066 , B82Y15/00 , G02B19/0014 , G02B19/0028 , G02B19/0057 , G02B19/009 , G02B26/10 , G02B26/105 , G02B27/0961 , G02B27/0966 , G02B27/48 , G06K7/10554 , G06K7/10683 , G06K7/10722 , G06K7/10732 , G06K7/10811 , G06K7/10861 , H01S5/02248 , H01S5/4025
摘要： A planar light illumination and imaging system for illuminating an object and forming an image thereof. The planar light illumination and imaging system which comprises an image formation and detection module having a field of view (FOV) focused at an image detecting array. A planar light illumination array (PLIA) constructed from an plurality of planar light illumination modules (PLIMs) is arranged in rectilinear manner. Each planar light illumination module comprises a visible light emitting diode (LED), a focusing lens, and a cylindrical optical element arranged therewith to produce a planar light illumination beam component; and wherein the individual planar light illumination beam components produced from the plurality of planar light illumination modules are optically combined to produce a composite substantially planar light illumination beam having substantially-planar spatial distribution characteristics that extend through the field of view (FOV) of the image formation and detection module, so that light reflected off an object illuminated by the planar light illumination beam is focused along the field of view and onto the image detecting array to form an image of the illuminated object.
摘要翻译：一种用于照亮物体并形成其图像的平面光照射和成像系统。平面光照明和成像系统，其包括具有聚焦在图像检测阵列的视场（FOV）的图像形成和检测模块。由多个平面光照射模块（PLIM）构成的平面光照射阵列（PLIA）以直线方式布置。每个平面光照射模块包括可见光发光二极管（LED），聚焦透镜和与其配置的圆柱形光学元件，以产生平面光照射束分量; 并且其中从所述多个平面光照射模块产生的各个平面光照射光束分量被光学地组合以产生具有基本上平面的空间分布特征的复合的基本上平面的光照射束，所述光照射束延伸通过所述图像的视场（FOV）形成和检测模块，使得由平面光照射光束照射的物体反射的光被聚焦在视场上并且到达图像检测阵列上以形成被照射物体的图像。

33. 发明授权

US07104455B2 Planar light illumination and imaging (PLIIM) system employing LED-based planar light illumination arrays (PLIAS) and an area-type image detection array 失效
标题翻译：采用基于LED的平面光照明阵列（PLIAS）和区域型图像检测阵列的平面光照和成像（PLIIM）系统
公开(公告)号：US07104455B2
公开(公告)日：2006-09-12
申请号：US10156744
申请日：2002-05-24
申请人： Constantine J. Tsikos , Timothy A. Good , Michael D. Schnee , Xiaoxun Zhu , Thomas Amundsen , C. Harry Knowles
发明人： Constantine J. Tsikos , Timothy A. Good , Michael D. Schnee , Xiaoxun Zhu , Thomas Amundsen , C. Harry Knowles
IPC分类号： G06K7/10
CPC分类号： G02B19/0066 , B82Y15/00 , G02B19/0014 , G02B19/0028 , G02B19/0057 , G02B19/009 , G02B26/10 , G02B26/105 , G02B27/0961 , G02B27/0966 , G02B27/48 , G06K7/10554 , G06K7/10683 , G06K7/10722 , G06K7/10732 , G06K7/10811 , G06K7/10861 , H01S5/02248 , H01S5/4025
摘要： Methods of and systems for illuminating objects using planar light illumination beams having substantially-planar spatial distribution characteristics that extend through the field of view (FOV) of image formation and detection modules employed in such systems. Each planar light illumination beam is produced from a planar light illumination beam array (PLIA) comprising an plurality of planar light illumination modules (PLIMs). Each PLIM comprises a visible light emitting diode (LED), a focusing lens, and a cylindrical optical element arranged therewith. The individual planar light illumination beam components produced from each PLIM are optically combined to produce a composite substantially planar light illumination beam having substantially uniform power density characteristics over the entire spatial extend thereof and thus the working range of the system. Preferably, each planar light illumination beam component is focused so that the minimum beam width thereof occurs at a point or plane which is the farthest or maximum object distance at which the system is designed to acquire images, thereby compensating for decreases in the power density of the incident planar light illumination beam due to the fact that the width of the planar light illumination beam increases in length for increasing object distances away from the imaging optics. By virtue of the present invention, it is now possible to use both LEDs and high-speed CCD-type image detectors in conveyor, hand-held and hold-under type scanning applications alike, enjoying the advantages and benefits that each such technology has to offer, while avoiding the shortcomings and drawbacks hitherto associated therewith.
摘要翻译：使用具有基本上平面的空间分布特性的平面光照射光束照射物体的方法和系统，其延伸通过图像形成的视野（FOV）和在这种系统中使用的检测模块。每个平面光照射束由包括多个平面光照射模块（PLIM）的平面光照射束阵列（PLIA）产生。每个PLIM包括可见发光二极管（LED），聚焦透镜和与其配置的圆柱形光学元件。从每个PLIM产生的单个平面光照射束分量被光学组合以产生在其整个空间延伸上具有基本均匀的功率密度特性的复合的基本上平面的光照射束，并且因此产生系统的工作范围。优选地，每个平面光照射束分量被聚焦，使得其最小波束宽度发生在系统被设计为获取图像的最远或最大对象距离的点或平面处，由此补偿功率密度的降低入射的平面光照射光束由于平面光照射光束的宽度在长度上增加以增加远离成像光学元件的距离的事实。凭借本发明，现在可以在输送机，手持和保持型扫描应用中同时使用LED和高速CCD型图像检测器，享受每种这样的技术具有的优点和益处提供，同时避免迄今为止的缺点和缺点。

34. 发明授权

US07086594B2 Planar light illumination and imaging (PLIIM) systems employing LED-based planar light illumination arrays (PLIAS) and linear electronic image detection arrays 失效
标题翻译：采用基于LED的平面光照明阵列（PLIAS）和线性电子图像检测阵列的平面光照和成像（PLIIM）系统
公开(公告)号：US07086594B2
公开(公告)日：2006-08-08
申请号：US10156683
申请日：2002-05-24
申请人： Constantine J. Tsikos , Timothy A. Good , Michael D. Schnee , Xiaoxun Zhu , Thomas Amundsen , C. Harry Knowles
发明人： Constantine J. Tsikos , Timothy A. Good , Michael D. Schnee , Xiaoxun Zhu , Thomas Amundsen , C. Harry Knowles
IPC分类号： G06K7/14
CPC分类号： G02B19/0066 , B82Y15/00 , G02B19/0014 , G02B19/0028 , G02B19/0057 , G02B19/009 , G02B26/10 , G02B26/105 , G02B27/0961 , G02B27/0966 , G02B27/48 , G06K7/10554 , G06K7/10683 , G06K7/10722 , G06K7/10732 , G06K7/10811 , G06K7/10861 , H01S5/02248 , H01S5/4025
摘要： Methods of and systems for illuminating objects using planar light illumination beams having substantially-planar spatial distribution characteristics that extend through the field of view (FOV) of image formation and detection modules employed in such systems. Each planar light illumination beam is produced from a planar light illumination beam array (PLIA) comprising an plurality of planar light illumination modules (PLIMs). Each PLIM comprises a visible light emitting diode (LED), a focusing lens, and a cylindrical optical element arranged therewith. The individual planar light illumination beam components produced from each PLIM are optically combined to produce a composite substantially planar light illumination beam having substantially uniform power density characteristics over the entire spatial extend thereof and thus the working range of the system. Preferably, each planar light illumination beam component is focused so that the minimum beam width thereof occurs at a point or plane which is the farthest or maximum object distance at which the system is designed to acquire images, thereby compensating for decreases in the power density of the incident planar light illumination beam due to the fact that the width of the planar light illumination beam increases in length for increasing object distances away from the imaging optics. By virtue of the present invention, it is now possible to use both LEDs and high-speed CCD-type image detectors in conveyor, hand-held and hold-under type scanning applications alike, enjoying the advantages and benefits that each such technology has to offer, while avoiding the shortcomings and drawbacks hitherto associated therewith.
摘要翻译：使用具有基本上平面的空间分布特性的平面光照射光束照射物体的方法和系统，其延伸通过图像形成的视野（FOV）和在这种系统中使用的检测模块。每个平面光照射束由包括多个平面光照射模块（PLIM）的平面光照射束阵列（PLIA）产生。每个PLIM包括可见发光二极管（LED），聚焦透镜和与其配置的圆柱形光学元件。从每个PLIM产生的单个平面光照射束分量被光学组合以产生在其整个空间延伸上具有基本均匀的功率密度特性的复合的基本上平面的光照射束，并且因此产生系统的工作范围。优选地，每个平面光照射束分量被聚焦，使得其最小波束宽度发生在系统被设计为获取图像的最远或最大对象距离的点或平面处，由此补偿功率密度的降低入射的平面光照射光束由于平面光照射光束的宽度在长度上增加以增加远离成像光学元件的距离的事实。凭借本发明，现在可以在输送机，手持和保持型扫描应用中同时使用LED和高速CCD型图像检测器，享受每种这样的技术具有的优点和益处提供，同时避免迄今为止的缺点和缺点。

35. 发明授权

US07513428B2 Planar laser illumination and imaging device employing laser current modulation to generate spectral components and reduce temporal coherence of laser beam, so as to achieve a reduction in speckle-pattern noise during time-averaged detection of images of objects illuminated thereby during imaging operations 失效
标题翻译：使用激光电流调制的平面激光照明和成像装置产生光谱分量并减少激光束的时间相干性，从而在成像操作期间由此照射的物体的图像的时间平均检测期间实现斑点图案噪声的减少
公开(公告)号：US07513428B2
公开(公告)日：2009-04-07
申请号：US11603349
申请日：2006-11-21
申请人： Patrick Giordano , Stephen Colavito , Allan Wirth , William Svedas , Timothy A. Good , Andrew Jankevics , C. Harry Knowles , Constantine J. Tsikos
发明人： Patrick Giordano , Stephen Colavito , Allan Wirth , William Svedas , Timothy A. Good , Andrew Jankevics , C. Harry Knowles , Constantine J. Tsikos
IPC分类号： G06K7/10
CPC分类号： G06K7/10 , H04N1/02865 , H04N1/03
摘要： An imaging device including at least one imaging array and image formation optics that provide a field of view corresponding to the imaging array. At least one illumination module (which includes at least one source of coherent illumination) produces planar light illumination that substantially overlaps the field of view corresponding to the imaging array. Illumination control circuitry modulates the power level of illumination produced by the source of coherent illumination during each photo-integration time period of the imaging array to thereby reduce speckle noise in images captured by the imaging array. The illumination control circuitry preferably modulates the power level of illumination by controlling the number and/or duration of time periods corresponding to different power levels of illumination produced by the source of coherent illumination during each photo-integration time period of the imaging array.
摘要翻译：一种成像装置，包括至少一个成像阵列和图像形成光学器件，其提供对应于成像阵列的视场。至少一个照明模块（其包括至少一个相干照明源）产生基本上与对应于成像阵列的视野重叠的平面光照射。照明控制电路在成像阵列的每个光积分时间段期间调制由相干照明源产生的照明的功率电平，从而减少由成像阵列捕获的图像中的斑点噪声。照明控制电路优选地通过控制对应于在成像阵列的每个光合成时间段期间由相干照明源产生的不同功率电平的时间段的数量和/或持续时间来调制照明的功率电平。

36. 发明授权

US07140543B2 Planar light illumination and imaging device with modulated coherent illumination that reduces speckle noise induced by coherent illumination 失效
标题翻译：平面光照和具有调制相干照明的成像装置，可减少由相干照明引起的斑点噪声
公开(公告)号：US07140543B2
公开(公告)日：2006-11-28
申请号：US10186276
申请日：2002-06-27
申请人： Patrick Giordano , Stephen Colavito , Allan Wirth , William Svedas , Timothy A. Good , Andrew Jankevics , C. Harry Knowles , Constantine J. Tsikos
发明人： Patrick Giordano , Stephen Colavito , Allan Wirth , William Svedas , Timothy A. Good , Andrew Jankevics , C. Harry Knowles , Constantine J. Tsikos
IPC分类号： G06K7/10 , G06K7/14
CPC分类号： G06K7/10732 , G02B27/48 , G06K7/10594 , G06K7/10752 , G06K9/26 , G06K9/325 , G06K2207/1018
摘要： A device including at least one image detection array and image formation optics that provide a field of view corresponding to the image detection array. At least one illumination module (which includes at least one source of coherent illumination) produces planar light illumination that substantially overlaps the field of view corresponding to the image detection array. Illumination control circuitry modulates the power level of illumination produced by the source of coherent illumination during each photo-integration time period of the image detection array to thereby reduce speckle noise in images captured by the image detection array. The illumination control circuitry preferably modulates the power level of illumination by controlling the number and/or duration of time periods corresponding to different power levels of illumination produced by the source of coherent illumination during each photo-integration time period of the image detection array.
摘要翻译：一种包括至少一个图像检测阵列和图像形成光学器件的装置，其提供对应于图像检测阵列的视场。至少一个照明模块（其包括至少一个相干照明源）产生基本上与对应于图像检测阵列的视野重叠的平面光照射。照明控制电路在图像检测阵列的每个光积分时间段期间调制由相干照明源产生的照明的功率电平，从而减少由图像检测阵列捕获的图像中的斑点噪声。照明控制电路优选地通过控制对应于由图像检测阵列的每个光积分时间段期间的相干照明源产生的不同照明功率电平的时间段的数量和/或持续时间来调制照明的功率电平。

37. 发明授权

US06959868B2 TUNNEL-BASED METHOD OF AND SYSTEM FOR IDENTIFYING TRANSPORTED PACKAGES EMPLOYING THE TRANSMISSION OF PACKAGE DIMENSION DATA OVER A DATA COMMUNICATIONS NETWORK AND THE TRANSFORMATION OF PACKAGE DIMENSION DATA AT LINEAR IMAGING SUBSYSTEMS IN SAID TUNNEL-BASED SYSTEM SO AS TO ENABLE THE CONTROL OF AUTO ZOOM/FOCUS CAMERA MODULES THEREWITHIN DURING LINEAR IMAGING OPERATIONS 失效
标题翻译：基于隧道的识别运输包的方法和系统，用于在数据通信网络中传输包装尺寸数据，以及在基于隧道的系统中线性成像子系统的包装尺寸数据的转换，以便使自动变焦/ 在线性成像操作期间的焦点相机模块
公开(公告)号：US06959868B2
公开(公告)日：2005-11-01
申请号：US10100234
申请日：2002-03-15
申请人： Constantine J. Tsikos , C. Harry Knowles , Xiaoxun Zhu , Ka Man Au , Sankar Ghosh
发明人： Constantine J. Tsikos , C. Harry Knowles , Xiaoxun Zhu , Ka Man Au , Sankar Ghosh
IPC分类号： G02B6/42 , G02B27/48 , G06C11/08 , G06F17/00 , G06K7/10 , G06K7/14 , G06K9/22 , G07B15/06 , H01S3/00 , H01S3/08 , H01S5/00 , H01S5/022 , H01S5/40
CPC分类号： G06K7/10 , G02B19/0014 , G02B19/0052 , G02B19/0085 , G02B19/009 , G02B19/0095 , G02B26/10 , G02B27/095 , G02B27/48 , G06K7/10594 , G06K7/10732 , G06K7/146 , G06K9/26 , G06K9/325 , H01S5/005 , H01S5/02248 , H01S5/4025
摘要： A camera-based tunnel-type package identification system comprising at least first and second camera units, a package dimension subsystem, and a data communications network installed about a conveyor belt structure. Each camera unit is mounted about the conveyor belt structure, and has a linear imaging subsystem with a field of view (FOV) having automatic zoom and focus imaging optics, and a camera control computer for controlling the operation of the imaging subsystem. During system operation, package dimension data from transported packages is transmitted over the data communications network to the first and second camera units. Each camera control computer converts received package dimension data to its local coordinate reference system, and generates camera control signals which drive the automatic zoom and focus imaging optics of its associated camera units to enable the capture and processing of linear images of the transported package.
摘要翻译：一种基于照相机的隧道式包装识别系统，包括至少第一和第二相机单元，包装尺寸子系统和围绕传送带结构安装的数据通信网络。每个相机单元围绕输送带结构安装，并且具有具有自动缩放和聚焦成像光学元件的具有视野的线性成像子系统（FOV），以及用于控制成像子系统的操作的照相机控制计算机。在系统操作期间，来自运送包装的包装尺寸数据通过数据通信网络传输到第一和第二相机单元。每个相机控制计算机将接收的包装尺寸数据转换到其局部坐标参考系统，并且生成照相机控制信号，其驱动其相关联的相机单元的自动变焦和聚焦成像光学元件，以使得能够捕获和处理运送包装的线性图像。

38. 发明授权

US06957775B2 INTERNET-BASED METHOD OF AND SYSTEM FOR REMOTELY MONITORING, CONFIGURING AND SERVICING PLANAR LASER ILLUMINATION AND IMAGING (PLIIM) BASED NETWORKS WITH NODES FOR SUPPORTING OBJECT IDENTIFICATION AND ATTRIBUTE INFORMATION ACQUISITION FUNCTIONS 失效
标题翻译：基于互联网的远程监控，配置和维护平面激光照明和成像（PLIIM）网络的方法和系统，支持对象识别和属性信息获取功能的节点
公开(公告)号：US06957775B2
公开(公告)日：2005-10-25
申请号：US10135893
申请日：2002-04-29
申请人： Constantine J. Tsikos , C. Harry Knowles , Xiaoxun Zhu , Ka Man Au , Barry E. Schwartz
发明人： Constantine J. Tsikos , C. Harry Knowles , Xiaoxun Zhu , Ka Man Au , Barry E. Schwartz
IPC分类号： G06K7/10 , G06Q10/00 , G06Q30/00
CPC分类号： G06Q10/00 , G06K7/10722 , G06K7/10732 , G06Q30/00
摘要： An Internet-based method of and system for monitoring, configuring and servicing planar laser illumination and imaging (PLIIM) based network remotely situated from and using any Internet-enabled client computing subsystem functioning as the network management station (NMS). The PLIIM based network (i) has a plurality of nodes, (ii) is operably interconnected to the infrastructure of the Internet, (iii) has set of parameters related to network, system and/or subsystem characteristics of said PLIIM-based network, and (iv) is capable of performing a predefined set of object identification and attribute acquisition functions in a network environment. The method comprising using the NMS to remotely monitor the set of parameters related to network, system and/or subsystem characteristics of the PLIIM-based network. The NMS, its supporting client machine, and/or remote servers supporting servlets, analyze the monitored parameters so as to diagnose either actual or potential performance failures in the PLIIM-based network which might prevent the performance of one or more of the predefined set of object identification and attribute acquisition functions. By virtue of the present invention, it is now possible to remotely monitor, configure and service Internet-based PLIIM-based networks simply using any Internet-enabled browser, thereby keeping such networks up and running, with minimal down-time.
摘要翻译：一种基于互联网的方法和系统，用于监控，配置和维护基于平面激光照明和成像（PLIIM）的网络，远程位于使用任何启用网络的客户端计算子系统作为网络管理站（NMS）。基于PLIIM的网络（i）具有多个节点，（ii）可操作地连接到因特网的基础设施，（iii）具有与所述基于PLIIM的网络的网络，系统和/或子系统特性相关的一组参数，和（iv）能够在网络环境中执行预定义的一组对象识别和属性获取功能。该方法包括使用NMS远程监视与基于PLIIM的网络的网络，系统和/或子系统特性相关的参数集合。 NMS，其支持的客户端机器和/或支持servlet的远程服务器分析所监视的参数，以便诊断基于PLIIM的网络中的实际或潜在性能故障，这可能会阻止一个或多个预定义的组对象识别和属性获取功能。凭借本发明，现在可以简单地使用任何启用了因特网的浏览器来远程监视，配置和服务基于互联网的基于PLIIM的网络，从而以最小的停机时间来保持这种网络的正常运行。

39. 发明授权

US06837432B2 METHOD OF AND APPARATUS FOR AUTOMATICALLY CROPPING CAPTURED LINEAR IMAGES OF A MOVING OBJECT PRIOR TO IMAGE PROCESSING USING REGION OF INTEREST (ROI) COORDINATE SPECIFICATIONS CAPTURED BY AN OBJECT PROFILING SUBSYSTEM 有权
公开(公告)号：US06837432B2
公开(公告)日：2005-01-04
申请号：US10099142
申请日：2002-03-14
申请人： Constantine J. Tsikos , C. Harry Knowles , Xiaoxun Zhu , Ka Man Au , Sankar Ghosh
发明人： Constantine J. Tsikos , C. Harry Knowles , Xiaoxun Zhu , Ka Man Au , Sankar Ghosh
IPC分类号： G02B6/42 , G02B27/48 , G06C11/08 , G06F17/00 , G06K7/10 , G06K7/14 , G06K9/22 , G07B15/06 , H01S3/00 , H01S3/08 , H01S5/00 , H01S5/022 , H01S5/40
CPC分类号： G06K7/10 , G02B19/0014 , G02B19/0052 , G02B19/0085 , G02B19/009 , G02B19/0095 , G02B26/10 , G02B27/095 , G02B27/48 , G06K7/10594 , G06K7/10732 , G06K7/146 , G06K9/26 , G06K9/325 , H01S5/005 , H01S5/02248 , H01S5/4025
摘要： A method of and system for automatically cropping linear images of a moving object is disclosed. The method comprises automatically capturing a linear range and intensity data map from an object moving with respect to a coordinate reference system. The linear range and intensity data map includes a sequence of data sets taken along a sequence of sample points along the moving object. Each data set includes a set of coordinates specifying the location of the sample point and an intensity value specifying the intensity of light reflected from the moving object at the sample point. The intensity values in the linear range and intensity data map are automatically analyzed so as to determine the coordinates associated with a region of interest (ROI) on the moving object bearing object identifying information (e.g. bar code symbol, textual information, graphics, etc.) A linear image of the object moving within the coordinate reference is automatically captured. The coordinates of the region of interest (ROI) are automatically converted into a set of pixel indices corresponding to the region of interest (ROI) present in the linear image. The set of pixel indices and the linear image are then used to automatically produce a cropped linear image of the moving object. Cropped linear images can be buffered to produce two-dimensional images of the moving object, and then the two-dimensional image can be processed using image-based bar code decoding and/or OCR operators. By virtue of the present invention, it is now possible to crop linear images prior to image processing, on a linear image by linear image basis, thereby substantially reducing the amount of image data that requires image processing. By reducing image data through the cropping operations of the present invention, significant computational savings is achieved.

40. 发明授权

US06739511B2 METHOD OF SPECKLE-NOISE PATTERN REDUCTION AND APPARATUS THEREFOR BASED ON REDUCING THE TEMPORAL-COHERENCE OF THE PLANAR LASER ILLUMINATION BEAM BEFORE IT ILLUMINATES THE TARGET OBJECT BY APPLYING TEMPORAL PHASE MODULATION TECHNIQUES DURING THE TRANSMISSION OF THE PLIB TOWARDS THE TARGET 失效
公开(公告)号：US06739511B2
公开(公告)日：2004-05-25
申请号：US10136621
申请日：2002-04-30
申请人： Constantine J. Tsikos , C. Harry Knowles , Allan Wirth , Timothy A. Good , Andrew Jankevics
发明人： Constantine J. Tsikos , C. Harry Knowles , Allan Wirth , Timothy A. Good , Andrew Jankevics
IPC分类号： G06K710
CPC分类号： G06K7/10 , G02B19/0014 , G02B19/0052 , G02B19/0085 , G02B19/009 , G02B19/0095 , G02B26/10 , G02B27/095 , G02B27/48 , G06K7/10594 , G06K7/10732 , G06K7/146 , G06K9/26 , G06K9/325 , H01S5/005 , H01S5/02248 , H01S5/4025
摘要： A planar laser illumination and imaging (PLLIM) based camera system capable of producing digital images with reduced levels of speckle-pattern noise. The PLIIM based camera system comprises a planar laser illumination array (PLIA) including a plurality of laser diodes for producing and projecting a planar laser illumination beam (PLIB), so as to illuminate an object as it is moving past said PLIIM based camera system. An image formation and detection (IFD) module is provided having a image detection array and imaging forming optics for providing the image detection array with a field of view (FOV). The PLIB and FOV are arranged in a coplanar relationship along the working range of the PLIIM based camera system so that the PLIB illuminates primarily within the FOV of the IFD module. A speckle-pattern noise reduction subsystem is integrated with the PLIA, for reducing the temporal-coherence of said planar laser illumination beam (PLIB) before the PLIB illuminates a target object. The speckle-pattern noise reduction subsystem carries out a temporal phase modulation technique during the transmission of the PLIB towards the target, so that the object is illuminated with a temporally coherent-reduced planar laser illumination beam (PLIB) and numerous substantially different time-varying speckle-noise patterns are produced at the image detection array over the photo-integration time period thereof. The numerous substantially different time-varying speckle-noise patterns are detected at the image detection array over the photo-integration time period, and the detected speckle-noise patterns are temporally averaged at said image detection array during the photo-integration time period thereof. As a result of such temporal averaging, the RMS power of observable speckle-noise patterns is reduced at the image detection array. By virtue of the present invention, it is now possible to enjoy the benefits of using laser-based illumination during high-speed imaging operations, without the adverse effects associated with speckle-pattern noise.

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