公开(公告)号：US08100330B2

公开(公告)日：2012-01-24

申请号：US12436456

申请日：2009-05-06

申请人： Orhan Bulan ,  Vishal Monga ,  Gaurav Sharma

发明人： Orhan Bulan ,  Vishal Monga ,  Gaurav Sharma

IPC分类号： G06K7/10 ,  G06K19/08 ,  G06K9/18

CPC分类号： G06K7/10 ,  G06K19/06028

摘要： What is disclosed is a system and method for encoding and decoding data in a color barcode pattern using dot orientation and color separability. The spectral (wavelength) characteristics of the CMY colorants, commonly used in digital printing, and those of RGB sensors are exploited to achieve high capacity data embedding rates in color barcodes. The present method embeds independent data in two different printer colorant channels using dot orientation modulation. In the print end, dots of two colorants occupy the same spatial region. At the detector end, by using the complementary sensor channels to estimate the colorant channels, data is recovered in each colorant channel. The method approximately doubles the capacity of encoding methods based upon a single colorant channel and enables embedding rates which match or exceed that of other hardcopy barcodes known in the arts. The method is robust against inter-separation misregistration with a small symbol error rate.

摘要翻译： 公开的是使用点取向和颜色分离来对彩色条形码图案中的数据进行编码和解码的系统和方法。 通常用于数字印刷的CMY着色剂和RGB传感器的光谱（波长）特性被利用来实现彩色条形码中的高容量数据嵌入率。 本方法使用点取向调制将独立数据嵌入两种不同的打印机着色剂通道。 在打印端，两个着色剂的点占据相同的空间区域。 在检测器端，通过使用互补传感器通道来估计着色剂通道，数据在每个着色剂通道中被回收。 该方法基于单个着色剂通道使编码方法的容量大大增加一倍，并且使嵌入速率匹配或超过本领域已知的其它硬拷贝条形码的嵌入速率。 该方法对于具有小的符号错误率的分离间对位失调是鲁棒的。

公开(公告)号：US20100282856A1

公开(公告)日：2010-11-11

申请号：US12436432

申请日：2009-05-06

申请人： ORHAN BULAN ,  Vishal Monga ,  Gaurav Sharma

发明人： ORHAN BULAN ,  Vishal Monga ,  Gaurav Sharma

IPC分类号： G06K19/06 ,  G06K1/00

CPC分类号： G06K7/00 ,  G06K7/14 ,  G06K19/06037

摘要： What is disclosed is a system and method for encoding and decoding data in a color barcode pattern using dot orientation and color separability. The spectral (wavelength) characteristics of the CMY colorants, commonly used in digital printing, and those of RGB sensors are exploited to achieve high capacity data embedding rates in color barcodes. The present method embeds independent data in two different printer colorant channels using dot orientation modulation. In the print end, dots of two colorants occupy the same spatial region. At the detector end, by using the complementary sensor channels to estimate the colorant channels, data is recovered in each colorant channel. The method approximately doubles the capacity of encoding methods based upon a single colorant channel and enables embedding rates which match or exceed that of other hardcopy barcodes known in the arts. The method is robust against inter-separation misregistration with a small symbol error rate.

公开(公告)号：US20100060943A1

公开(公告)日：2010-03-11

申请号：US12207718

申请日：2008-09-10

申请人： Vishal Monga ,  Gaurav Sharma ,  Orhan Bulan

发明人： Vishal Monga ,  Gaurav Sharma ,  Orhan Bulan

IPC分类号： G06K15/00

CPC分类号： G06K1/121 ,  G06K2019/06234 ,  G06T1/005 ,  G06T2201/0051 ,  G06T2201/0061 ,  G06T2201/0065

摘要： What is disclosed is a novel system and method for encoding/decoding data in a cover contone image via halftone dot orientation modulation. Arrays of halftone threshold values are used to determine a desired orientation, e.g. 0/90°+/−45° for a given single data value of the original message to be embedded. Message data is embedded as a function of halftone dot orientation. Detection modeling of the print-scan process enables the determination of dot orientation from the image scan via statistically motivated image moments. A probabilistic model of the print-scan channel conditions received moments on input orientation. Density values of the received moments are used to determine dot orientation for each halftone cell. The embedded data is retrieved based on the determined orientations. The present method is applicable to areas of data embedding, document security, and the like.

摘要翻译： 公开的是通过半色调点取向调制对覆盖连接图像中的数据进行编码/解码的新型系统和方法。 使用半色调阈值数组来确定期望的取向，例如， 对于要嵌入的原始消息的给定单个数据值，0/90°+/- 45°。 消息数据作为半色调点取向的函数进行嵌入。 打印扫描过程的检测建模使得能够通过统计动机的图像时刻从图像扫描确定点取向。 打印扫描通道条件的概率模型在输入方向上接收到力矩。 接收力矩的密度值用于确定每个半色调单元的点取向。 基于确定的取向检索嵌入数据。 本方法适用于数据嵌入，文档安全等领域。

公开(公告)号：US20100282851A1

公开(公告)日：2010-11-11

申请号：US12436456

申请日：2009-05-06

申请人： ORHAN BULAN ,  Vishal Monga ,  Gaurav Sharma

发明人： ORHAN BULAN ,  Vishal Monga ,  Gaurav Sharma

IPC分类号： G06K7/10

CPC分类号： G06K7/10 ,  G06K19/06028

摘要： What is disclosed is a system and method for encoding and decoding data in a color barcode pattern using dot orientation and color separability. The spectral (wavelength) characteristics of the CMY colorants, commonly used in digital printing, and those of RGB sensors are exploited to achieve high capacity data embedding rates in color barcodes. The present method embeds independent data in two different printer colorant channels using dot orientation modulation. In the print end, dots of two colorants occupy the same spatial region. At the detector end, by using the complementary sensor channels to estimate the colorant channels, data is recovered in each colorant channel. The method approximately doubles the capacity of encoding methods based upon a single colorant channel and enables embedding rates which match or exceed that of other hardcopy barcodes known in the arts. The method is robust against inter-separation misregistration with a small symbol error rate.

摘要翻译： 公开的是使用点取向和颜色分离来对彩色条形码图案中的数据进行编码和解码的系统和方法。 通常用于数字印刷的CMY着色剂和RGB传感器的光谱（波长）特性被利用来实现彩色条形码中的高容量数据嵌入率。 本方法使用点取向调制将独立数据嵌入两种不同的打印机着色剂通道。 在打印端，两个着色剂的点占据相同的空间区域。 在检测器端，通过使用互补传感器通道来估计着色剂通道，数据在每个着色剂通道中被恢复。 该方法基于单个着色剂通道使编码方法的容量大大增加一倍，并且使嵌入速率匹配或超过本领域已知的其它硬拷贝条形码的嵌入速率。 该方法对于具有小的符号错误率的分离间对位失调是鲁棒的。

公开(公告)号：US08047447B2

公开(公告)日：2011-11-01

申请号：US12436432

申请日：2009-05-06

申请人： Orhan Bulan ,  Vishal Monga ,  Gaurav Sharma

发明人： Orhan Bulan ,  Vishal Monga ,  Gaurav Sharma

IPC分类号： G06K7/00 ,  G06K19/00 ,  G06K19/06 ,  G06K19/08

CPC分类号： G06K7/00 ,  G06K7/14 ,  G06K19/06037

摘要： What is disclosed is a system and method for encoding and decoding data in a color barcode pattern using dot orientation and color separability. The spectral (wavelength) characteristics of the CMY colorants, commonly used in digital printing, and those of RGB sensors are exploited to achieve high capacity data embedding rates in color barcodes. The present method embeds independent data in two different printer colorant channels using dot orientation modulation. In the print end, dots of two colorants occupy the same spatial region. At the detector end, by using the complementary sensor channels to estimate the colorant channels, data is recovered in each colorant channel. The method approximately doubles the capacity of encoding methods based upon a single colorant channel and enables embedding rates which match or exceed that of other hardcopy barcodes known in the arts. The method is robust against inter-separation misregistration with a small symbol error rate.

摘要翻译： 公开的是使用点取向和颜色分离来对彩色条形码图案中的数据进行编码和解码的系统和方法。 通常用于数字印刷的CMY着色剂和RGB传感器的光谱（波长）特性被利用来实现彩色条形码中的高容量数据嵌入率。 本方法使用点取向调制将独立数据嵌入两种不同的打印机着色剂通道。 在打印端，两个着色剂的点占据相同的空间区域。 在检测器端，通过使用互补传感器通道来估计着色剂通道，数据在每个着色剂通道中被回收。 该方法基于单个着色剂通道使编码方法的容量大大增加一倍，并且使嵌入速率匹配或超过本领域已知的其它硬拷贝条形码的嵌入速率。 该方法对于具有小的符号错误率的分离间对位失调是鲁棒的。

公开(公告)号：US08023160B2

公开(公告)日：2011-09-20

申请号：US12207704

申请日：2008-09-10

申请人： Vishal Monga ,  Gaurav Sharma ,  Orhan Bulan

发明人： Vishal Monga ,  Gaurav Sharma ,  Orhan Bulan

IPC分类号： H04N1/405 ,  H04N1/44 ,  G06K15/02 ,  G06K19/06 ,  B41M1/10

CPC分类号： G06K1/121 ,  G06K2019/06234 ,  G06T1/005 ,  G06T2201/0051 ,  G06T2201/0061 ,  H04N1/32203 ,  H04N1/32229 ,  H04N1/32256 ,  H04N1/32352

摘要： What is disclosed is a novel system and method for encoding/decoding data in a cover contone image via halftone dot orientation modulation. Arrays of halftone threshold values are used to determine a desired orientation, e.g. 0/90°+/−45° for a given single data value of the original message to be embedded. Message data is embedded as a function of halftone dot orientation. Detection modeling of the print-scan process enables the determination of dot orientation from the image scan via statistically motivated image moments. A probabilistic model of the print-scan channel conditions received moments on input orientation. Density values of the received moments are used to determine dot orientation for each halftone cell. The embedded data is retrieved based on the determined orientations. The present method is applicable to areas of data embedding, document security, and the like.

摘要翻译： 公开的是通过半色调点取向调制对覆盖连接图像中的数据进行编码/解码的新型系统和方法。 使用半色调阈值数组来确定期望的取向，例如， 对于要嵌入的原始消息的给定单个数据值，0/90°+/- 45°。 消息数据作为半色调点取向的函数进行嵌入。 打印扫描过程的检测建模使得能够通过统计动机的图像时刻从图像扫描确定点取向。 打印扫描通道条件的概率模型在输入方向上接收到力矩。 接收力矩的密度值用于确定每个半色调单元的点取向。 基于确定的取向检索嵌入数据。 本方法适用于数据嵌入，文档安全等领域。

公开(公告)号：US08014035B2

公开(公告)日：2011-09-06

申请号：US12207718

申请日：2008-09-10

申请人： Vishal Monga ,  Gaurav Sharma ,  Orhan Bulan

发明人： Vishal Monga ,  Gaurav Sharma ,  Orhan Bulan

IPC分类号： H04N1/405 ,  G06T7/60 ,  G06K9/46 ,  G06K9/52 ,  G06K9/56 ,  B41M3/14

CPC分类号： G06K1/121 ,  G06K2019/06234 ,  G06T1/005 ,  G06T2201/0051 ,  G06T2201/0061 ,  G06T2201/0065

摘要： What is disclosed is a novel system and method for encoding/decoding data in a cover contone image via halftone dot orientation modulation. Arrays of halftone threshold values are used to determine a desired orientation, e.g. 0/90°+/−45° for a given single data value of the original message to be embedded. Message data is embedded as a function of halftone dot orientation. Detection modeling of the print-scan process enables the determination of dot orientation from the image scan via statistically motivated image moments. A probabilistic model of the print-scan channel conditions received moments on input orientation. Density values of the received moments are used to determine dot orientation for each halftone cell. The embedded data is retrieved based on the determined orientations. The present method is applicable to areas of data embedding, document security, and the like.

摘要翻译： 公开的是通过半色调点取向调制对覆盖连接图像中的数据进行编码/解码的新型系统和方法。 使用半色调阈值数组来确定期望的取向，例如， 对于要嵌入的原始消息的给定单个数据值，0/90°+/- 45°。 消息数据作为半色调点取向的函数进行嵌入。 打印扫描过程的检测建模使得能够通过统计动机的图像时刻从图像扫描确定点取向。 打印扫描通道条件的概率模型在输入方向上接收到力矩。 接收力矩的密度值用于确定每个半色调单元的点取向。 基于确定的取向检索嵌入数据。 本方法适用于数据嵌入，文档安全等领域。

公开(公告)号：US20090094198A1

公开(公告)日：2009-04-09

申请号：US11868173

申请日：2007-10-05

申请人： Vishal Monga ,  Gaurav Sharma

发明人： Vishal Monga ,  Gaurav Sharma

IPC分类号： G06F17/30

CPC分类号： G06F17/30943 ,  G06F3/1296

摘要： A method and system for identifying print jobs that are repeats of a previously completed job utilizing an object level hash table. Received print jobs can be parsed into meaningful classes of objects and a table of hash values can be computed for objects in each class and for each print job. A synopsis comprising the table of hash values can be retained in a database along with the job specific settings. A newly encountered job can be then declared as a repeat of a previous job based on the hashes for the new job that match the hash values for the previous job stored in the database. The classes of objects are readily determinable in common document formats used for print job submission, such as PDF.

摘要翻译： 一种用于识别使用对象级散列表重复先前完成的作业的打印作业的方法和系统。 接收的打印作业可以被解析为有意义的对象类，并且可以为每个类中的对象和每个打印作业计算哈希值表。 包括散列值表的概要可以与作业特定设置一起保留在数据库中。 然后，可以将新遇到的作业声明为基于与作业存储数据库中的先前作业的哈希值相匹配的新作业的哈希值的先前作业的重复。 在用于打印作业提交的通用文档格式（例如PDF）中，对象类可以很容易地确定。

公开(公告)号：US07580149B2

公开(公告)日：2009-08-25

申请号：US11868173

申请日：2007-10-05

申请人： Vishal Monga ,  Gaurav Sharma

发明人： Vishal Monga ,  Gaurav Sharma

IPC分类号： G06F15/00 ,  G06F15/16

CPC分类号： G06F17/30943 ,  G06F3/1296

摘要： A method and system for identifying print jobs that are repeats of a previously completed job utilizing an object level hash table. Received print jobs can be parsed into meaningful classes of objects and a table of hash values can be computed for objects in each class and for each print job. A synopsis comprising the table of hash values can be retained in a database along with the job specific settings. A newly encountered job can be then declared as a repeat of a previous job based on the hashes for the new job that match the hash values for the previous job stored in the database. The classes of objects are readily determinable in common document formats used for print job submission, such as PDF.

摘要翻译： 一种用于识别使用对象级散列表重复先前完成的作业的打印作业的方法和系统。 接收的打印作业可以被解析为有意义的对象类，并且可以为每个类中的对象和每个打印作业计算哈希值表。 包括散列值表的概要可以与作业特定设置一起保留在数据库中。 然后，可以将新遇到的作业声明为基于与作业存储数据库中的先前作业的哈希值相匹配的新作业的哈希值的先前作业的重复。 在用于打印作业提交的通用文档格式（例如PDF）中，对象类可以很容易地确定。

公开(公告)号：US08477374B2

公开(公告)日：2013-07-02

申请号：US12894475

申请日：2010-09-30

申请人： Vishal Monga ,  Shen-Ge Wang ,  Raja Bala

发明人： Vishal Monga ,  Shen-Ge Wang ,  Raja Bala

IPC分类号： H04N1/60

CPC分类号： H04N1/6033

摘要： Systems and methods are described that facilitate reducing a number of patches used in characterizing a color halftone printer via a binary color printer model. A binary printer model involves printing of a fundamental set of color binary patterns that encompass all possible halftone outputs. A k-center clustering technique is employed to automatically find and eliminate redundancies in the initial set of binary color patterns. Once the number of patches is reduced to an acceptable number, a multiplicative reflectance model is applied that better approximates the physical process and therefore improves accuracy.

摘要翻译： 描述了有助于通过二进制彩色打印机模型减少用于表征彩色半色调打印机的多个补丁的系统和方法。 二进制打印机模型涉及打印包含所有可能的半色调输出的基本颜色二进制图案集。 采用k-中心聚类技术来自动寻找和消除初始二值颜色图案集中的冗余。 一旦将补片的数量减少到可接受的数量，则应用更好地逼近物理过程并因此提高准确度的乘法反射率模型。