公开(公告)号：US07068856B2

公开(公告)日：2006-06-27

申请号：US10245426

申请日：2002-09-17

申请人： Lawrence E. Albertelli ,  David L. Ii ,  Nina Kung

发明人： Lawrence E. Albertelli ,  David L. Ii ,  Nina Kung

IPC分类号： G06K9/36

CPC分类号： H04N1/3878 ,  G06K9/32 ,  G06K2209/01

摘要： A simple and robust method for determining the orientation angle of a scanned image or the angular orientation of an object in an electronic image based on using descriptors of the image and systems that implement the method are disclosed. A system including means for acquiring the electronic image, means for determining image centroid coordinates, means for obtaining second order moments corresponding to the image, and, means for determining an orientation angle of a principal axis of the image implements the method.

摘要翻译： 公开了一种用于基于使用实现该方法的图像的描述符和系统的图像来确定扫描图像的取向角或电子图像中的对象的角度定向的简单而鲁棒的方法。 一种包括用于获取电子图像的装置的系统，用于确定图像质心坐标的装置，用于获得与图像相对应的二阶矩的装置，以及用于确定图像的主轴的取向角的装置实现该方法。

公开(公告)号：US06898314B2

公开(公告)日：2005-05-24

申请号：US10025789

申请日：2001-12-26

申请人： Nina Kung ,  Lawrence E. Albertelli ,  David L. Ii

发明人： Nina Kung ,  Lawrence E. Albertelli ,  David L. Ii

IPC分类号： G06K9/32 ,  G06K9/38 ,  G06K9/34

CPC分类号： G06K9/325 ,  G06K9/38 ,  G06K2209/01

摘要： A method and system of reading images. The method includes decimating an image and normalizing the decimated image. Then, rebinning grayscale pixel data associated with the decimated image and reassigning a selected range of grayscales representing a region of interest of the remapped grayscale pixel data to one while zeroing others. The method also includes labeling the connected pixels associated with the range of grayscales representing the region of interest and then extending the connected pixels through region growing using a preselected offset value. Lastly, the method includes filtering segmented regions of the connected pixels to eliminate certain candidates. The system is designed to implement the steps of the enumerated method.

摘要翻译： 一种读取图像的方法和系统。 该方法包括抽取图像并对抽取的图像进行归一化。 然后，重新组合与抽取的图像相关联的灰度像素数据，并将表示重映射的灰度像素数据的感兴趣区域的所选择的灰度范围重新分配到一个，同时使另一个调零。 该方法还包括标记与表示感兴趣区域的灰度范围相关联的连接像素，然后使用预选的偏移值将连接的像素延伸通过区域生长。 最后，该方法包括过滤连接的像素的分段区域以消除某些候选。 该系统旨在实现枚举方法的步骤。

公开(公告)号：US07236643B2

公开(公告)日：2007-06-26

申请号：US10104878

申请日：2002-03-22

申请人： Lawrence E. Albertelli ,  David L. Ii ,  Nina Kung

发明人： Lawrence E. Albertelli ,  David L. Ii ,  Nina Kung

IPC分类号： G06K9/00 ,  G06K9/34 ,  G06K9/40 ,  H04N1/40 ,  H04N1/38 ,  H04N5/00 ,  G09G5/00 ,  G09G5/02

CPC分类号： G06K9/38 ,  G06K2209/01

摘要： In order to render information contained in images more detectable in the presence of noise, the present invention discloses a system and method to binarize the images in the presence of noise. The method of this invention comprises the steps of applying a dynamic range reducing filter to the digitized image values, obtaining a range reduced image; applying an edge detecting filter to the range reduced image, obtaining a filtered image; and then, adaptively binarizing the digitized image utilizing the corresponding filtered image to obtain an adaptive threshold.

摘要翻译： 为了在存在噪声的情况下使包含在图像中的信息更可检测，本发明公开了一种在存在噪声的情况下二值化图像的系统和方法。 本发明的方法包括以下步骤：对数字化图像值应用动态范围缩小滤波器，获得缩小后的图像; 将边缘检测滤波器应用于缩小后的图像，获得滤波图像; 然后利用相应的滤波图像自适应地二值化数字化图像以获得自适应阈值。

公开(公告)号：US07051937B2

公开(公告)日：2006-05-30

申请号：US10104150

申请日：2002-03-22

申请人： Lawrence E. Albertelli ,  David L. Ii ,  Nina Kung

发明人： Lawrence E. Albertelli ,  David L. Ii ,  Nina Kung

IPC分类号： G02B26/10

CPC分类号： G06K7/14

摘要： A system and method to binarize the bar code image in the presence of noise in order to render bar codes more detectable in the presence of noise. The method of this invention includes the steps of applying a gradient detecting filter to the bar code image, obtaining a filtered image, and then, adaptively binarizing the bar code image utilizing the corresponding filtered image to obtain an adaptive threshold. A system that implements the method is also described.

摘要翻译： 在存在噪声的情况下二值化条形码图像的系统和方法，以便在存在噪声的情况下使条形码更可检测。 本发明的方法包括以下步骤：将梯度检测滤波器应用于条形码图像，获得滤波图像，然后利用相应滤波图像自适应地二值化条形码图像以获得自适应阈值。 还描述了实现该方法的系统。

公开(公告)号：US07058240B2

公开(公告)日：2006-06-06

申请号：US10274028

申请日：2002-10-18

申请人： Lawrence E. Albertelli ,  Charles Call ,  David L. Ii ,  Nina Kung

发明人： Lawrence E. Albertelli ,  Charles Call ,  David L. Ii ,  Nina Kung

IPC分类号： G06K9/60

CPC分类号： G06K9/00463 ,  G06K9/00469 ,  Y10S707/99936

摘要： The systems and methods of this invention provide a simple classifier suitable for real time use. The classifier adapts to changing system conditions and does not require recalculating the details of the classifier.

摘要翻译： 本发明的系统和方法提供了适用于实时使用的简单分类器。 分类器适应不断变化的系统条件，不需要重新计算分类器的细节。

公开(公告)号：US07406196B2

公开(公告)日：2008-07-29

申请号：US10804965

申请日：2004-03-19

申请人： Lawrence E. Albertelli ,  Nina Kung

发明人： Lawrence E. Albertelli ,  Nina Kung

IPC分类号： G06K9/46

CPC分类号： G06K9/3233 ,  G06K2209/01

摘要： A method and system for detecting the corners of a region in an image.

摘要翻译： 一种用于检测图像中的区域的角部的方法和系统。

公开(公告)号：US07304663B2

公开(公告)日：2007-12-04

申请号：US11196242

申请日：2005-08-04

申请人： Lawrence E. Albertelli

发明人： Lawrence E. Albertelli

IPC分类号： H04N17/00

CPC分类号： H04N1/00002 ,  H04N1/00018 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00063 ,  H04N2101/00

摘要： Resolution of an image capture system is measured by imaging a test target having a progression of feature sizes and pitch in respective sub-fields thereof. The image captured by the imaging system is then inspected to determine a sub-field image which does not include aliasing in the form of a Moire' pattern. Inclusion of reference numerals corresponding to the sub-field image feature size and pitch allows direct reading of the resolution of the imaging system. Such a system enables fast and accurate determination of the resolution and alignment of an imaging system using an inexpensively produced test target together with an arbitrary image viewing program.

摘要翻译： 通过对具有其各个子场中的特征尺寸和间距的进展的测试对象进行成像来测量图像拍摄系统的分辨率。 然后检查由成像系统捕获的图像以确定不包括以莫尔'图案形式的混叠的子场图像。 包含对应于子场图像特征尺寸和间距的附图标记允许直接读取成像系统的分辨率。 这样的系统能够使用廉价生产的测试目标以及任意的图像观看程序来快速且准确地确定成像系统的分辨率和对准。

公开(公告)号：US06980249B2

公开(公告)日：2005-12-27

申请号：US09838682

申请日：2001-04-20

申请人： Lawrence E. Albertelli

发明人： Lawrence E. Albertelli

IPC分类号： G02B17/08 ,  H04N5/225

CPC分类号： G02B17/08 ,  G01J1/0411

摘要： Focused imaging of constant size and resolution over a wide range of distances and a wide field of view in object space is provided by a doubly telecentric catadioptric optical system including an external limiting aperture at the juncture of the focal planes of two objectives, with a large-diameter concave spherical or aspheric mirror as the primary objective, and a camera lens as the secondary objective. Constant resolution avoids rescaling of images made at different depths for machine recognition tasks such as OCR, saving computation time and cost, and increasing through-put and accuracy. For digital linescan cameras, constant resolution of the image avoids scanning objects at different line rates for different depths of objects being scanned, thus maximizing speed of the objects and, hence, throughput. The field of view is constant over the entire range of depth and is not limited by the diameter of the camera lens elements. Undesirable cropping of the image of objects close to the imaging system is prevented. The effective f/number of the system is constant over the entire range of focus, and the image irradiance is more uniform over the entire field of view than with a traditional non-telecentric camera lens.

摘要翻译： 通过双重远心反射折射光学系统提供在宽范围的距离和宽范围的物体空间中的恒定尺寸和分辨率的聚焦成像，其包括在两个物镜的焦平面的接合处的外部限制孔径，具有大的 - 直径凹球面或非球面镜作为主要目标，并将相机镜头作为次要目标。 恒定分辨率避免了在不同深度进行的图像重新缩放，用于机器识别任务（如OCR），节省了计算时间和成本，并提高了输入和精度。 对于数字线扫描相机，图像的恒定分辨率避免了扫描对象的不同线速度的扫描对象，从而最大化对象的速度，从而最大化吞吐量。 视野在整个深度范围内是恒定的，并不受相机透镜元件的直径的限制。 防止靠近成像系统的物体的图像的不期望的裁剪。 系统的有效f /数量在整个焦距范围内是恒定的，并且在整个视野中的图像辐照度比传统的非远心摄像机镜头更均匀。

公开(公告)号：US06484066B1

公开(公告)日：2002-11-19

申请号：US09694195

申请日：2000-10-23

申请人： Michael J. Riess ,  Lawrence E. Albertelli

发明人： Michael J. Riess ,  Lawrence E. Albertelli

IPC分类号： G06F700

CPC分类号： G01B11/00

摘要： An image lift tunnel scanner uses extended depth of field cameras in order to view objects of various shapes and sizes on a conveyor system. The image lift tunnel scanner operates by passing a package first through a dimensioning device, such light curtain that determines the package's height, width, length, orientation and position on the conveyor belt. A bottom scan camera takes a fixed focus image and requires only a trigger and length information from the light curtain. The length information determines the duration of the scan after the camera receives the trigger signal. A top scan camera also requires a trigger and the length information along with the height information so that it can set its focus. Each of two side cameras also receives trigger and length information. If the package is registered on the conveyor belt, the only additional information required is the package width and the package position on the conveyor belt so that the start and stop of the image scan can be calculated. A first side camera scans the front of the package as the package approaches the camera. The first side camera views the front side of the package at a 45 degree angle. After sweeping the front of the package, the scan line of the first side camera continues sweeping along the side of the package, again at a 45 degree angle, but shifted 90 degrees relative to the angle at which the front side of the package was scanned. A second camera views the back and the other side of the package.

摘要翻译： 图像升降隧道扫描仪使用扩展的景深相机来在传送系统上观察各种形状和尺寸的物体。 图像提升隧道扫描器首先通过尺寸设备（包括确定包装的高度，宽度，长度，取向和输送带上的位置）的光幕通过包装件来操作。 底部扫描摄像机拍摄固定的对焦图像，仅需要来自光幕的触发和长度信息。 长度信息确定相机接收到触发信号后扫描的持续时间。 顶部扫描摄像机还需要触发和长度信息以及高度信息，以便可以设置其焦点。 两个摄像机中的每一个也接收触发和长度信息。 如果包装在输送带上注册，则所需的附加信息是包装宽度和输送带上的包装位置，从而可以计算图像扫描的开始和停止。 当包装靠近相机时，第一侧相机会扫描包装的前部。 第一侧相机以45度的角度观察包装的前侧。 在扫过包装的前部之后，第一侧相机的扫描线沿着包装的侧面再次以45度的角度扫掠，但是相对于扫描的正面被扫描的角度偏移了90度 。 第二台相机可以看到包装的背面和另一面。

公开(公告)号：US06992696B1

公开(公告)日：2006-01-31

申请号：US09695873

申请日：2000-10-26

申请人： Lawrence E. Albertelli

发明人： Lawrence E. Albertelli

IPC分类号： H04N17/00

CPC分类号： H04N1/00002 ,  H04N1/00018 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00063 ,  H04N2101/00

摘要： Resolution of an image capture system is measured by imaging a test target having a progression of feature sizes and pitch in respective sub-fields thereof. The image captured by the imaging system is then inspected to determine a sub-field image which does not include aliasing in the form of a Moire' pattern. Inclusion of reference numerals corresponding to the sub-field image feature size and pitch allows direct reading of the resolution of the imaging system. Such a system enables fast and accurate determination of the resolution and alignment of an imaging system using an inexpensively produced test target together with an arbitrary image viewing program.

摘要翻译： 通过对具有其各个子场中的特征尺寸和间距的进展的测试对象进行成像来测量图像拍摄系统的分辨率。 然后检查由成像系统捕获的图像以确定不包括以莫尔'图案形式的混叠的子场图像。 包含对应于子场图像特征尺寸和间距的附图标记允许直接读取成像系统的分辨率。 这样的系统能够使用廉价生产的测试目标以及任意的图像观看程序来快速且准确地确定成像系统的分辨率和对准。