公开(公告)号：US09635378B2

公开(公告)日：2017-04-25

申请号：US14725399

申请日：2015-05-29

Applicant: Digimarc Corporation

Inventor： Vojtech Holub ,  Donald Haaga ,  Ravi K. Sharma

IPC: G06K9/00 ,  H04N19/467 ,  H04N19/124 ,  G06T1/00 ,  H04N1/32

CPC classification number: H04N1/32229 ,  G06T1/0028 ,  G06T1/005 ,  G06T2201/0051 ,  G06T2201/0061 ,  G06T2201/0065 ,  G06T2201/0202 ,  H04N1/32 ,  H04N1/32187 ,  H04N1/32224 ,  H04N1/32251 ,  H04N1/32261 ,  H04N1/3232 ,  H04N1/32352 ,  H04N19/124 ,  H04N19/467 ,  H04N2201/3233

Abstract: Sparse signal modulation schemes encode a data channel on a host image in a manner that is robust, flexible to achieve perceptual quality constraints, and provides improved data capacity. The host image is printed by any of a variety of means to apply the image, with sparse signal, to an object. After image capture of the object, a decoder processes the captured image to detect and extract data modulated into the sparse signal. The sparse signal may incorporate implicit or explicit synchronization components, which are either formed from the data signal or are complementary to it.

公开(公告)号：US20160105585A1

公开(公告)日：2016-04-14

申请号：US14881448

申请日：2015-10-13

Applicant: Digimarc Corporation

Inventor： Vojtech Holub ,  Tomas Filler

IPC: H04N1/32 ,  G06T1/00

CPC classification number: H04N1/32149 ,  G06T1/0028 ,  G06T2201/0202

Abstract: The present disclosure relates to advanced signal processing including digital watermarking and steganography. One method includes: obtaining image data representing imagery in a first color mode; steganographically embedding a watermark signal into the image data, thereby generating watermarked image data; obtaining reader data representing an input color mode of a reader configured to detect or decode the watermarked image data, wherein the input color mode is different from the first color mode; transforming the watermarked image data from the first color mode to the input color mode; estimating a signal strength of the watermark signal within the transformed watermark image data; and visually displaying the estimated signal strength. The estimated signal strength can be visually displayed as a multi-color heat map. Of course, other combinations are described as well.

Abstract translation: 本公开涉及包括数字水印和隐写术的高级信号处理。 一种方法包括：获得以第一颜色模式表示图像的图像数据; 将水印信号隐写地嵌入到图像数据中，从而生成带水印的图像数据; 获取表示被配置为检测或解码所述水印图像数据的读取器的输入颜色模式的读取器数据，其中所述输入颜色模式不同于所述第一颜色模式; 将加水印图像数据从第一颜色模式转换为输入颜色模式; 估计变换水印图像数据内的水印信号的信号强度; 并可视地显示估计的信号强度。 估计的信号强度可以视觉显示为多色热图。 当然，也描述了其他组合。

公开(公告)号：US20150030201A1

公开(公告)日：2015-01-29

申请号：US14332739

申请日：2014-07-16

Applicant: Digimarc Corporation

Inventor： Vojtech Holub ,  Tomas Filler

IPC: G06K9/66 ,  H04N1/32 ,  G06K9/62 ,  G06T1/00

CPC classification number: G06T1/005 ,  G06K9/66 ,  G06T2201/0065 ,  G06T2201/0601 ,  H04N1/32154 ,  H04N1/32197 ,  H04N1/32352

Abstract: The present disclosures relates generally to digital watermarking and data hiding. One claim recites a method comprising: obtaining data representing captured imagery, the captured imagery depicting packaging including digital watermarking, the digital watermarking including an orientation signal that is detectable in a transform domain; generating a n-dimensional feature set of the data representing captured imagery, the n-dimensional feature set representing the captured imagery in a spatial domain, where n is an integer great than 13; using a trained classifier to predict the presence of the orientation signal in a transform domain from the feature set in the spatial domain. Of course, other claims and combinations are provided too.

Abstract translation: 本公开一般涉及数字水印和数据隐藏。 一个权利要求描述了一种方法，包括：获得表示所捕获的图像的数据，所捕获的图像描绘包括数字水印的包装，所述数字水印包括在变换域中可检测的取向信号; 生成表示所捕获图像的数据的n维特征集，所述n维特征集表示在空间域中捕获的图像，其中n是大于13的整数; 使用经过训练的分类器来预测来自空间域中的特征集的变换域中的取向信号的存在。 当然，也提供其他权利要求和组合。