公开(公告)号：US07357325B2

公开(公告)日：2008-04-15

申请号：US10894478

申请日：2004-07-19

申请人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

发明人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

IPC分类号： G02B26/08

CPC分类号： G06K7/10851 ,  G06K7/10732 ,  G06K7/10881

摘要： A hand-supportable digital imaging-based bar code symbol reading device comprises: an automatic object presence and range detection subsystem; an area-type image formation and detection subsystem having a CMOS area-type image detection array, and narrow-area and wide area image capture modes of operation; an LED-based illumination subsystem having LED arrays, and narrow-area and wide area illumination modes of operation; an automatic light exposure measurement and illumination control subsystem; an image capturing and buffering subsystem; and an image-processing bar code symbol reading subsystem. The LED arrays associated with the LED-based illumination subsystem are automatically driven in a precise manner to globally expose the CMOS area-type image detection array with LED-based illumination only when substantially all of its rows of pixels are in a state of integration and have a common integration time, thereby enabling the image capturing and buffering subsystem to capture high quality images independent of the relative motion between the hand-supportable digital imaging-based bar code symbol reading device and the object.

摘要翻译： 一种支持手持数字成像的条形码符号读取装置，包括：自动对象存在和范围检测子系统; 具有CMOS区域型图像检测阵列的区域型图像形成和检测子系统，以及窄区域和广域图像捕获操作模式; 具有LED阵列的基于LED的照明子系统，以及窄区域和广域照明操作模式; 自动曝光测量和照明控制子系统; 图像捕获和缓冲子系统; 和图像处理条形码符号读取子系统。 与基于LED的照明子系统相关联的LED阵列以精确的方式被自动驱动，以便仅当其像素行的基本上全部处于集成状态时才基本上暴露基于LED的照明的CMOS区域型图像检测阵列，并且 具有共同的积分时间，从而使得图像捕获和缓冲子系统能够独立于基于手持数字成像的条形码符号读取装置和对象之间的相对运动来捕获高质量图像。

公开(公告)号：US07347374B2

公开(公告)日：2008-03-25

申请号：US11338907

申请日：2004-12-03

申请人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

发明人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

IPC分类号： G06K7/10

CPC分类号： G06F9/44526 ,  G06K7/10712 ,  G06K7/10732 ,  G06K7/10831 ,  G06K7/10851 ,  G06K7/10881 ,  G06K7/14 ,  G06K2207/1012

摘要： A hand-supportable digital imaging-based bar code symbol reader employing an event-driven system control subsystem, automatic IR-based object detection, and a trigger-switch activated image capture and processing subsystem.

摘要翻译： 一种支持手持数字成像的条形码符号读取器，采用事件驱动系统控制子系统，基于IR的自动对象检测和触发切换激活的图像捕捉和处理子系统。

公开(公告)号：US07281661B2

公开(公告)日：2007-10-16

申请号：US10902710

申请日：2004-07-29

申请人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

发明人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

IPC分类号： G02B26/08

CPC分类号： G06K7/10851 ,  G06K7/10732 ,  G06K7/10881

摘要： A hand-supportable digital imaging-based bar code symbol reader comprises: an automatic object presence detection subsystem; a multi-mode area-type image formation and detection subsystem having narrow-area and wide-area image-capture modes of operation; a multi-mode LED-based illumination subsystem having independently controllable LED illumination arrays; an automatic light exposure measurement and illumination control subsystem; an image capturing and buffering subsystem; an image-processing bar code symbol reading subsystem; an input/output subsystem; and a system control subsystem for controlling the subsystems. The hand-supportable imaging-based bar code reader employs a method of intelligently illuminating objects during image capture, wherein the LED illumination arrays are independently controlled during particular moments of object illumination to generate digital images of objects which, through digital image analysis, are determined to be substantially free of noise (i.e. intense spatial intensity variations) caused by specular-type reflection of illumination off objects during illumination and imaging operations.

摘要翻译： 一种支持手持数字成像的条形码符号读取器包括：自动对象存在检测子系统; 具有窄区域和广域图像捕捉操作模式的多模式区域型图像形成和检测子系统; 具有独立可控的LED照明阵列的多模LED基照明子系统; 自动曝光测量和照明控制子系统; 图像捕获和缓冲子系统; 图像处理条码符号读取子系统; 输入/输出子系统; 以及用于控制子系统的系统控制子系统。 基于手持式成像的条形码读取器采用在图像捕获期间智能照明对象的方法，其中LED照明阵列在物体照明的特定时刻被独立地控制，以产生通过数字图像分析被确定的物体的数字图像 在照明和成像操作期间基本上没有由照明离开物体的镜面反射引起的噪声（即，强烈的空间强度变化）。

公开(公告)号：US07278575B2

公开(公告)日：2007-10-09

申请号：US10901426

申请日：2004-07-27

申请人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

发明人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

IPC分类号： G06K5/04

CPC分类号： G06K7/10851 ,  G06K7/10732 ,  G06K7/10881

摘要： A hand-supportable digital imaging-based bar code symbol reader comprises: an automatic object presence detection subsystem; an image formation and detection subsystem; a LED-based illumination subsystem having a wide area illumination mode of operation; an automatic light exposure measurement and illumination control subsystem; an image capturing and buffering subsystem; an image-processing bar code symbol reading subsystem; an input/output subsystem; and a system control subsystem for controlling each of the above-described subsystems. The image-processing bar code symbol reading subsystem performs helically-sweeping feature-extraction analysis on a captured digital image of an object referenced from the center thereof, so as to enable the rapid reading of a bar code symbol graphically represented therein, using advanced image-processing based bar code reading techniques.

摘要翻译： 一种支持手持数字成像的条形码符号读取器包括：自动对象存在检测子系统; 图像形成和检测子系统; 具有广域照明操作模式的基于LED的照明子系统; 自动曝光测量和照明控制子系统; 图像捕获和缓冲子系统; 图像处理条码符号读取子系统; 输入/输出子系统; 以及用于控制上述每个子系统的系统控制子系统。 图像处理条形码符号读取子系统对从其中心引用的对象的捕获的数字图像执行螺旋扫描特征提取分析，以便能够使用高级图像快速读取其中图形化地显示的条形码符号 基于处理的条形码读取技术。

公开(公告)号：US07270272B2

公开(公告)日：2007-09-18

申请号：US10902709

申请日：2004-07-29

申请人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

发明人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

IPC分类号： G02B26/08

CPC分类号： G06K7/10722 ,  G06K7/10801 ,  G06K2207/1012

摘要： A hand-supportable digital imaging-based bar code symbol reading system comprises: an automatic object presence and range detection subsystem; an image formation and detection subsystem; a multi-mode LED-based illumination subsystem having an LED illumination array; an automatic light exposure measurement and illumination control subsystem; an image capturing and buffering subsystem; a multi-mode image-processing bar code symbol reading subsystem having a first mode and a second mode of operation; an input/output subsystem; and a system control subsystem for controlling the subsystems. The multi-mode image-processing bar code symbol reading subsystem automatically switches its modes of image-processing during a single bar code symbol reading cycle, and within each mode of image-processing based bar code symbol reading a different image-processing based bar code symbol reading methodology is automatically applied.

摘要翻译： 一种支持手持数字成像的条形码符号读取系统，包括：自动对象存在和范围检测子系统; 图像形成和检测子系统; 具有LED照明阵列的多模LED基照明子系统; 自动曝光测量和照明控制子系统; 图像捕获和缓冲子系统; 具有第一模式和第二操作模式的多模式图像处理条形码符号读取子系统; 输入/输出子系统; 以及用于控制子系统的系统控制子系统。 多模式图像处理条形码符号读取子系统在单个条形码符号读取周期期间自动切换其图像处理模式，并且在基于图像处理的条形码符号的每个模式中读取不同的基于图像处理的条形码 符号阅读方法被自动应用。

公开(公告)号：US07240844B2

公开(公告)日：2007-07-10

申请号：US10901445

申请日：2004-07-28

申请人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

发明人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

IPC分类号： G06K7/10

CPC分类号： G06K7/10851 ,  G06K7/10732 ,  G06K7/10881

摘要： A hand-supportable digital imaging-based bar code symbol reading system comprises: an automatic object presence detection subsystem; an image formation and detection subsystem employing a CMOS area-type image detection array; an LED-based illumination subsystem employing a LED illumination array for generating a field of narrow-band LED illumination; an automatic light exposure measurement and illumination control subsystem employing LED illumination driver circuitry; an image capturing and buffering subsystem; an image-processing bar code symbol reading subsystem; an input/output subsystem; a narrow-band transmission-type optical filter subsystem; and a system control subsystem for controlling the subsystems. The time duration that the CMOS area-type image sensing array is exposed to narrow-band illumination, from the LED-based illumination array, is managed by controlling the time that the LED-based illumination array generates narrow-band illumination in response to first and second control activation signals generated by the CMOS image sensing array and the automatic object presence detection subsystem, respectively, aboard the system.

摘要翻译： 一种基于手持式数字成像的条形码符号读取系统，包括：自动对象存在检测子系统; 采用CMOS区域型图像检测阵列的图像形成和检测子系统; 采用LED照明阵列的LED照明子系统，用于产生窄带LED照明领域; 采用LED照明驱动电路的自动曝光测量和照明控制子系统; 图像捕获和缓冲子系统; 图像处理条码符号读取子系统; 输入/输出子系统; 窄带传输型光滤波器子系统; 以及用于控制子系统的系统控制子系统。 基于LED的照明阵列，CMOS区域型图像感测阵列暴露于窄带照明的持续时间通过控制基于LED的照明阵列响应于第一次而产生窄带照明的时间来管理 以及由CMOS图像感测阵列和系统上的自动对象存在检测子系统产生的第二控制激活信号。

公开(公告)号：US20070138293A1

公开(公告)日：2007-06-21

申请号：US11604674

申请日：2006-11-27

申请人： Xiaoxun Zhu ,  Yong Liu ,  Ka Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky

发明人： Xiaoxun Zhu ,  Yong Liu ,  Ka Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky

IPC分类号： G06K7/10

CPC分类号： G06K7/10851 ,  G06K7/10732 ,  G06K7/10881

摘要： A portable digital image capturing and processing system comprising: an image formation and detection subsystem; a narrow-band illumination subsystem; a narrow-band transmission-type optical filter subsystem; an automatic light exposure measurement subsystem; and an automatic illumination control subsystem. The image formation and detection subsystem has an area-type image sensing array for detecting digital images of objects formed thereon by image formation optics providing a field of view (FOV) for the system. Within the FOV of the image formation and detection subsystem, the narrow-band illumination subsystem produces a field of narrow-band illumination consisting essentially of a narrow band of wavelengths of visible illumination. The narrow-band transmission-type optical filter subsystem transmits substantially only the narrow band of wavelengths of visible illumination produced from the narrow-band illumination subsystem, and rejects all other optical wavelengths outside the narrow band however generated by ambient illumination sources. The automatic light exposure measurement subsystem employs a photo-detector operated independently from the area-type image sensing array, for automatically measuring the light exposure incident upon a selected portion of the FOV, and producing an electrical signal representative of the light exposure measurement. The automatic illumination control subsystem responds to the electrical signal and controls the duration of narrow-band illumination produced from the narrow-band illumination subsystem.

摘要翻译： 一种便携式数字图像捕获和处理系统，包括：图像形成和检测子系统; 窄带照明子系统; 窄带传输型光滤波器子系统; 自动曝光测量子系统; 和自动照明控制子系统。 图像形成和检测子系统具有区域型图像感测阵列，用于通过为系统提供视场（FOV）的图像形成光学器件来检测其上形成的物体的数字图像。 在图像形成和检测子系统的FOV内，窄带照明子系统产生基本上由可见光的波长窄带组成的窄带照明领域。 窄带传输型光学滤波器子系统基本上仅传输从窄带照明子系统产生的可见光的窄带波长，并且拒绝由环境照明源产生的窄带外的所有其它光波长。 自动曝光测量子系统使用独立于区域型图像感测阵列操作的光电检测器，用于自动测量入射在FOV的选定部分上的光照射，并产生代表曝光测量的电信号。 自动照明控制子系统响应电信号并控制从窄带照明子系统产生的窄带照明的持续时间。

公开(公告)号：US20070138291A1

公开(公告)日：2007-06-21

申请号：US11603272

申请日：2006-11-21

申请人： Xiaoxun Zhu ,  Yong Liu ,  Ka Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky

发明人： Xiaoxun Zhu ,  Yong Liu ,  Ka Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky

IPC分类号： G06K7/10

CPC分类号： G06K7/10851 ,  G06K7/10732 ,  G06K7/10881

摘要： A hand-supportable digital image capture and processing system comprises: an area-type image formation and detection subsystem having an area-type image detection array; an LED-based illumination subsystem having a LED-based illumination array; an automatic light exposure measurement and illumination control subsystem; an image capturing and buffering subsystem; and an image-processing subsystem. The LED array is automatically driven in a precise manner to globally expose the area-type image detection array with LED-based illumination only when substantially all of its rows of pixels are in a state of integration and have a common integration time, thereby enabling the capture of high quality images independent of the relative motion between the object and the hand-supportable digital image capture and processing system.

摘要翻译： 手持式数字图像捕获和处理系统包括：区域型图像形成和检测子系统，具有区域型图像检测阵列; 具有基于LED的照明阵列的基于LED的照明子系统; 自动曝光测量和照明控制子系统; 图像捕获和缓冲子系统; 和图像处理子系统。 LED阵列以精确的方式被自动驱动，以便仅当基本上所有像素行都处于集成状态并且具有共同的积分时间时才能以基于LED的照明来全面暴露区域型图像检测阵列，从而使得 捕获高质量的图像，与物体和手持式数字图像捕获和处理系统之间的相对运动无关。

公开(公告)号：US07216810B2

公开(公告)日：2007-05-15

申请号：US10895271

申请日：2004-07-20

申请人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

发明人： Xiaoxun Zhu ,  Yong Liu ,  Ka Man Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Harry Knowles

IPC分类号： G02B26/08

CPC分类号： G06K7/10851 ,  G06K7/10732 ,  G06K7/10881

摘要： A hand-supportable digital imaging-based bar code symbol reading device comprises: an automatic object presence detection subsystem; a multi-mode area-type image formation and detection subsystem having a field of view (FOV), and narrow-area and wide area image capture modes of operation; a multi-mode LED-based illumination subsystem having narrow-area and wide area illumination modes of operation; an automatic light exposure measurement and illumination control subsystem; an image capturing and buffering subsystem; an image-processing bar code symbol reading subsystem; an input/output subsystem; and a system control subsystem. In the digital imaging-based bar code reading device of the present invention, the automatic illumination and exposure control subsystem continuously measures the light exposure incident upon a central portion of the FOV, and automatically controls the operation of the LED-based multi-mode illumination subsystem so that the detected object is sufficiently illuminated and the multi-mode image formation and detection subsystem enabled to form and detect good quality digital images of the automatically detected object during illumination and imaging operations.

摘要翻译： 一种支持手持式数字成像的条形码符号读取装置，包括：自动对象存在检测子系统; 具有视场（FOV）的多模式区域型图像形成和检测子系统，以及窄区域和广域图像捕获操作模式; 具有窄区域和广域照明操作模式的多模式的基于LED的照明子系统; 自动曝光测量和照明控制子系统; 图像捕获和缓冲子系统; 图像处理条码符号读取子系统; 输入/输出子系统; 和系统控制子系统。 在本发明的基于数字成像的条形码读取装置中，自动照明和曝光控制子系统连续地测量入射到FOV的中心部分的曝光，并且自动控制基于LED的多模式照明 子系统，使得检测到的物体被充分照明，并且多模式图像形成和检测子系统能够在照明和成像操作期间形成和检测自动检测到的物体的高质量数字图像。

公开(公告)号：US20050116044A1

公开(公告)日：2005-06-02

申请号：US10901463

申请日：2004-07-27

申请人： Xiaoxun Zhu ,  Yong Liu ,  Ka Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Knowles

发明人： Xiaoxun Zhu ,  Yong Liu ,  Ka Au ,  Rui Hou ,  Hongpeng Yu ,  Xi Tao ,  Liang Liu ,  Wenhua Zhang ,  Anatoly Kotlarsky ,  Sankar Ghosh ,  Michael Schnee ,  Pasqual Spatafore ,  Thomas Amundsen ,  Sung Byun ,  Mark Schmidt ,  Garrett Russell ,  John Bonanno ,  C. Knowles

IPC分类号： G06K7/10 ,  G06K9/22

CPC分类号： G06K7/10851 ,  G06K7/10732 ,  G06K7/10881

摘要： Method of and apparatus for processing captured images within a semi-automatic hand-supportable imaging-based bar code symbol reader in order to read 1D and/or 2D bar code symbols graphically represented therein. The semi-automatic hand-supportable digital imaging-based bar code symbol reader comprises: an automatic object presence detection subsystem; a multi-mode area-type image formation and detection subsystem having narrow-area and wide area image capture modes of operation; a multi-mode LED-based illumination subsystem having narrow-area and wide area illumination modes of operation; an image capturing and buffering subsystem; a multi-mode image-processing bar code symbol reading subsystem; an input/output subsystem; a manually-activatable trigger switch; and a system control subsystem integrated with each of the above-described subsystems. The bar code symbol reader embodies advanced image processing methods for reading 1D and/or 2D bar code symbols graphically represented in captured digital images.

摘要翻译： 用于在半自动手持式成像基于成像的条形码符号读取器中处理捕获图像的方法和装置，以便读取其中以图形方式表示的1D和/或2D条形码符号。 基于半自动手持数字成像的条形码符号读取器包括：自动对象存在检测子系统; 具有窄区域和广域图像捕捉操作模式的多模式区域型图像形成和检测子系统; 具有窄区域和广域照明操作模式的多模式的基于LED的照明子系统; 图像捕获和缓冲子系统; 多模式图像处理条码符号读取子系统; 输入/输出子系统; 一个手动启动的触发开关; 以及与上述每个子系统集成的系统控制子系统。 条形码符号读取器体现了用于读取在捕获的数字图像中图形表示的1D和/或2D条形码符号的高级图像处理方法。