公开(公告)号：US09349237B2

公开(公告)日：2016-05-24

申请号：US13730743

申请日：2012-12-28

Applicant: Yibin Tian ,  Wei Ming

Inventor： Yibin Tian ,  Wei Ming

IPC: G06K9/00 ,  G07D7/20 ,  G07D7/00 ,  H04N1/40

CPC classification number: G07D7/2058 ,  G07D7/00 ,  G07D7/206

Abstract: A method for authenticating a printed document which carries barcode that encode authentication data, including word bounding boxes for each word in the original document image and data for reconstructing the original image. The printed document is scanned to generate a target document image, which is then segmented into text words. The word bounding boxes of the original and target document images are used to align the target document image. Then, each word in the original document image is compared to corresponding words in the target document image using word difference map and Hausdorff distance between them. Symbols of the original document image are further compared to corresponding symbols in the target document image using feature comparison, symbol difference map and Hausdorff distance comparison, and point matching. These various comparison results can identify alterations in the target document with respect to the original document, which can be visualized.

Abstract translation: 一种用于验证携带条形码的打印文件的方法，该打印文件对原始文档图像中的每个单词和用于重建原始图像的数据进行编码的认证数据，包括字边界框。 扫描打印的文档以生成目标文档图像，然后将其分割成文本字。 使用原始和目标文档图像的边界框对齐目标文档图像。 然后，将原始文档图像中的每个单词与目标文档图像中的相应单词进行比较，使用单词差异图和它们之间的Hausdorff距离。 使用特征比较，符号差异图和Hausdorff距离比较以及点匹配，将原始文档图像的符号进一步与目标文档图像中的对应符号进行比较。 这些各种比较结果可以识别目标文档中关于原始文档的变化，这可以被可视化。

公开(公告)号：US09230383B2

公开(公告)日：2016-01-05

申请号：US13730757

申请日：2012-12-28

Applicant: Yibin Tian ,  Wei Ming

Inventor： Yibin Tian ,  Wei Ming

IPC: G06K9/64 ,  G07D7/20 ,  G07D7/00 ,  G06K9/00 ,  G06K9/34 ,  G06K9/62

CPC classification number: G06T7/11 ,  G06K9/00456 ,  G06K9/00577 ,  G06K9/18 ,  G06K9/342 ,  G06K9/6201 ,  G06K9/6202 ,  G06K9/6255 ,  G06K2209/01 ,  G06T2207/10004 ,  G06T2207/30176 ,  G07D7/004 ,  G07D7/0043 ,  G07D7/20 ,  G07D7/2033 ,  G07D7/2041 ,  G07D7/206 ,  G07D7/2083 ,  H04N1/40062

Abstract: A method for compressing a bi-level document image containing text is disclosed. The document image is segmented into symbol images each representing a letter, numeral, etc. in the document. The symbol images are classified into a plurality of classes, each class being associated with a template image and a class index. Classification is done by comparing each symbol to be classified with template of existing classes, using a number of image features including zoning profiles, side profiles, topology statistics, and low-order image moments. These image features are compared using a tolerance based method to determine whether the symbol matches the template. After classification, certain classes that have few symbols classified into them may be merged with other classes. In addition, the template images of the classes are down-sampled, where the final sizes of the template images are dependent on the likelihood of confusion of the template with other templates.

Abstract translation: 公开了一种用于压缩包含文本的双层文档图像的方法。 文档图像被分割成符号图像，每个表示文档中的字母，数字等。 符号图像被分类为多个类，每个类与模板图像和类索引相关联。 通过使用许多图像特征（包括分区轮廓，侧面轮廓，拓扑统计和低阶图像力矩）将每个要分类的符号与现有类别的模板进行比较来进行分类。 使用基于公差的方法比较这些图像特征以确定符号是否与模板匹配。 分类后，分类为其中几个符号的某些类可能会与其他类合并。 此外，类的模板图像被采样，其中模板图像的最终尺寸取决于模板与其他模板混淆的可能性。

公开(公告)号：US08942491B2

公开(公告)日：2015-01-27

申请号：US13689655

申请日：2012-11-29

Applicant: Yibin Tian

Inventor： Yibin Tian

IPC: G06K9/36 ,  G06T9/00

CPC classification number: G06T3/0012

Abstract: A binary image downsampling method, including the steps of generating a gray-scale image from a binary image having a background and one or more foreground portions, locating skeleton pixels in the one or more foreground portions, manipulating values of certain foreground pixels in the gray-scale image such that the differences between the values of the skeleton pixels and the background pixels become more significant, downsampling the gray-scale image with the manipulated values of the certain foreground pixels, and generating a downsampled binary image from the downsampled gray-scale image.

Abstract translation: 一种二进制图像下采样方法，包括以下步骤：从具有背景和一个或多个前景部分的二进制图像生成灰度图像，在一个或多个前景部分中定位骨架像素，操纵灰度中的某些前景像素的值 尺度图像，使得骨架像素和背景像素的值之间的差异变得更显着，用某些前景像素的操纵值对灰度图像进行下采样，并且从下采样的灰度级生成下采样二进制图像 图片。

公开(公告)号：US20140185933A1

公开(公告)日：2014-07-03

申请号：US13730757

申请日：2012-12-28

Applicant: Yibin Tian ,  Wei Ming

Inventor： Yibin Tian ,  Wei Ming

IPC: G06K9/62

CPC classification number: G06T7/11 ,  G06K9/00456 ,  G06K9/00577 ,  G06K9/18 ,  G06K9/342 ,  G06K9/6201 ,  G06K9/6202 ,  G06K9/6255 ,  G06K2209/01 ,  G06T2207/10004 ,  G06T2207/30176 ,  G07D7/004 ,  G07D7/0043 ,  G07D7/20 ,  G07D7/2033 ,  G07D7/2041 ,  G07D7/206 ,  G07D7/2083 ,  H04N1/40062

Abstract: A method for compressing a bi-level document image containing text is disclosed. The document image is segmented into symbol images each representing a letter, numeral, etc. in the document. The symbol images are classified into a plurality of classes, each class being associated with a template image and a class index. Classification is done by comparing each symbol to be classified with template of existing classes, using a number of image features including zoning profiles, side profiles, topology statistics, and low-order image moments. These image features are compared using a tolerance based method to determine whether the symbol matches the template. After classification, certain classes that have few symbols classified into them may be merged with other classes. In addition, the template images of the classes are down-sampled, where the final sizes of the template images are dependent on the likelihood of confusion of the template with other templates.

Abstract translation: 公开了一种用于压缩包含文本的双层文档图像的方法。 文档图像被分割成符号图像，每个表示文档中的字母，数字等。 符号图像被分类为多个类，每个类与模板图像和类索引相关联。 通过使用许多图像特征（包括分区轮廓，侧面轮廓，拓扑统计和低阶图像力矩）将每个要分类的符号与现有类别的模板进行比较来进行分类。 使用基于公差的方法比较这些图像特征以确定符号是否与模板匹配。 分类后，分类为其中几个符号的某些类可能会与其他类合并。 此外，类的模板图像被采样，其中模板图像的最终尺寸取决于模板与其他模板混淆的可能性。

公开(公告)号：US20140183854A1

公开(公告)日：2014-07-03

申请号：US13730743

申请日：2012-12-28

Applicant: Yibin Tian ,  Wei Ming

Inventor： Yibin Tian ,  Wei Ming

IPC: B42D15/00

CPC classification number: G07D7/2058 ,  G07D7/00 ,  G07D7/206

Abstract: A method for authenticating a printed document which carries barcode that encode authentication data, including word bounding boxes for each word in the original document image and data for reconstructing the original image. The printed document is scanned to generate a target document image, which is then segmented into text words. The word bounding boxes of the original and target document images are used to align the target document image. Then, each word in the original document image is compared to corresponding words in the target document image using word difference map and Hausdorff distance between them. Symbols of the original document image are further compared to corresponding symbols in the target document image using feature comparison, symbol difference map and Hausdorff distance comparison, and point matching. These various comparison results can identify alterations in the target document with respect to the original document, which can be visualized.

Abstract translation: 一种用于验证携带条形码的打印文件的方法，该打印文件对原始文档图像中的每个单词和用于重建原始图像的数据进行编码的认证数据，包括字边界框。 扫描打印的文档以生成目标文档图像，然后将其分割成文本字。 使用原始和目标文档图像的边界框对齐目标文档图像。 然后，将原始文档图像中的每个单词与目标文档图像中的相应单词进行比较，使用单词差异图和它们之间的Hausdorff距离。 使用特征比较，符号差异图和Hausdorff距离比较以及点匹配，将原始文档图像的符号进一步与目标文档图像中的对应符号进行比较。 这些各种比较结果可以识别目标文档中关于原始文档的变化，这可以被可视化。

公开(公告)号：US20130161395A1

公开(公告)日：2013-06-27

申请号：US13336627

申请日：2011-12-23

Applicant: Yibin TIAN ,  Wei MING

Inventor： Yibin TIAN ,  Wei MING

IPC: G06K7/01 ,  G06K19/06

CPC classification number: G06K19/0614 ,  G06K19/06056

Abstract: A method and program for encoding and decoding color barcodes to increase their data capacity. The encoding steps include determining a shape and a color for each data cell to encode digital data, wherein a combination of the shape and the color for the data cell is chosen from a plurality of combinations of shapes and colors in accordance with a value of the digital data to be encoded, and coloring a subset of the plurality of pixels in each data cell in accordance with the shape and the color for the data cell determined above. The decoding steps include segmenting the data cells in a color barcode, recognizing a shape formed by a subset of pixels in each data cell and the color of the shape, and obtaining digital data from a combination of the recognized shape and color in each data cell.

Abstract translation: 用于对颜色条形码进行编码和解码以增加其数据容量的方法和程序。 所述编码步骤包括确定每个数据单元的形状和颜色以对数字数据进行编码，其中根据所述数据单元的值从多个形状和颜色的组合中选择数据单元的形状和颜色的组合 要编码的数字数据，以及根据上面确定的数据单元的形状和颜色，对每个数据单元中的多个像素的子集进行着色。 解码步骤包括分割彩色条形码中的数据单元，识别由每个数据单元中的像素子集形成的形状和形状的颜色，以及从每个数据单元中识别的形状和颜色的组合获得数字数据 。

公开(公告)号：US20120105802A1

公开(公告)日：2012-05-03

申请号：US12916508

申请日：2010-10-30

Applicant: Thang Duong ,  Yibin Tian

Inventor： Thang Duong ,  Yibin Tian

IPC: A61B3/14

CPC classification number: A61B3/113 ,  G02B7/287 ,  G02C7/081

Abstract: A pair of spectacles that can automatically change its power so that a fixation region of interest (ROI) of the user is always in focus. The automatic accommodative spectacle device includes focusing elements, sensors, line of sight detector, focus engine, focusing element controller, and power supply. The line of sight detector determines the line of sight for the left and right eyes of the user using data from the sensors. The focus engine uses the lines of sight for left and right eyes to determine the user's fixation ROI. The fixation ROI is used to determine powers for the focusing elements in order to bring the fixation ROI into focus. The focusing element controller carries out the needed optical power adjustment to apply to the focusing elements. Optional light sources may be provided.

Abstract translation: 可以自动改变其功率的一副眼镜，使得用户的感兴趣的固定区域（ROI）始终是焦点。 自动调节眼镜装置包括聚焦元件，传感器，视线检测器，聚焦引擎，聚焦元件控制器和电源。 视线检测器使用来自传感器的数据来确定用户的左眼和右眼的视线。 焦点引擎使用左眼和右眼的视线来确定用户的固定ROI。 固定ROI用于确定聚焦元件的功率，以便使定影ROI成为焦点。 聚焦元件控制器执行所需的光功率调节以应用于聚焦元件。 可以提供可选的光源。

公开(公告)号：US07965894B2

公开(公告)日：2011-06-21

申请号：US12495749

申请日：2009-06-30

Applicant: Yibin Tian ,  Wei Ming

Inventor： Yibin Tian ,  Wei Ming

IPC: G06K9/68

CPC classification number: G06K9/00 ,  G06K9/00577 ,  G06T7/254 ,  G06T2207/10008 ,  G06T2207/20224 ,  G06T2207/30176

Abstract: A document alteration detection method compares a target image with an original image using a two-step process. In the first step, the original and target images are divided into connected image components and their centroids are obtained, and the centroids of the image components in the original and target images are compared. Each centroid in the target image that is not in the original image is deemed to represent an addition, and each centroid in the original image that is not in the target image is deemed to represent a deletion. In the second step, sub-images containing the image components corresponding to each pair of matching centroids in the original and target images are compared to detect any alterations.

Abstract translation: 文件变更检测方法使用两步法将目标图像与原始图像进行比较。 在第一步中，将原始图像和目标图像分割为连接的图像分量，并获得它们的质心，并比较原始图像和目标图像中图像分量的质心。 不在原始图像中的目标图像中的每个质心被认为表示相加，并且原始图像中不在目标图像中的每个质心被视为表示删除。 在第二步骤中，比较包含对应于原始图像和目标图像中的每对匹配质心的图像成分的子图像以检测任何改变。

公开(公告)号：US20110121066A1

公开(公告)日：2011-05-26

申请号：US12624407

申请日：2009-11-23

Applicant: Yibin TIAN ,  Wei MING

Inventor： Yibin TIAN ,  Wei MING

IPC: G06F17/00 ,  G06K19/06

CPC classification number: G06K19/14 ,  G06F2221/2121 ,  G06F2221/2145 ,  G06F2221/2151 ,  G06F2221/2153

Abstract: A method of generating a self-authenticating printed document and authenticating the printed document. The back side of the printed document contains 2d barcode which encode extracted features of the document content. The features are hashed into a hash code, converted to a barcode stamp element, and transformed into a hierarchical barcode stamp by repeating the stamp element. The hierarchical barcode stamp is printed as a gray background pattern on the front side of the same sheet of printed document. To authenticate the printed document, the barcodes on the back side are read to extract the document features. The features are hashed into a hash code and compared to the hash code extracted from the hierarchical barcode stamp on the front side of the document to detect any alterations of the back side barcodes. Further, the document features extracted from the front and back sides of the document are compared.

Abstract translation: 一种生成自我认证的打印文档并认证打印文档的方法。 打印文档的背面包含编码文档内容的提取特征的2d条形码。 将特征散列成哈希码，转换成条形码印记元素，并通过重复印记元素转换成分层条形码印记。 分层条形码邮票在同一张印刷文件的正面打印为灰色背景图案。 要验证打印的文档，读取背面的条形码以提取文档特征。 这些特征被散列成哈希码，并与从文档正面的分层条形码印记提取的哈希码进行比较，以检测背面条形码的任何改变。 此外，比较从文档的正面和背面提取的文档特征。

公开(公告)号：US08474976B2

公开(公告)日：2013-07-02

申请号：US12916508

申请日：2010-10-30

Applicant: Thang Duong ,  Yibin Tian

Inventor： Thang Duong ,  Yibin Tian

IPC: A61B3/14 ,  A61B3/00 ,  A61B3/10 ,  G02F1/1335 ,  G03B21/26

CPC classification number: A61B3/113 ,  G02B7/287 ,  G02C7/081

Abstract: A pair of spectacles that can automatically change its power so that a fixation region of interest (ROI) of the user is always in focus. The automatic accommodative spectacle device includes focusing elements, sensors, line of sight detector, focus engine, focusing element controller, and power supply. The line of sight detector determines the line of sight for the left and right eyes of the user using data from the sensors. The focus engine uses the lines of sight for left and right eyes to determine the user's fixation ROI. The fixation ROI is used to determine powers for the focusing elements in order to bring the fixation ROI into focus. The focusing element controller carries out the needed optical power adjustment to apply to the focusing elements. Optional light sources may be provided.

Abstract translation: 可以自动改变其功率的一副眼镜，使得用户的感兴趣的固定区域（ROI）始终是焦点。 自动调节眼镜装置包括聚焦元件，传感器，视线检测器，聚焦引擎，聚焦元件控制器和电源。 视线检测器使用来自传感器的数据来确定用户的左眼和右眼的视线。 焦点引擎使用左眼和右眼的视线来确定用户的固定ROI。 固定ROI用于确定聚焦元件的功率，以便使定影ROI成为焦点。 聚焦元件控制器执行所需的光功率调节以应用于聚焦元件。 可以提供可选的光源。