公开(公告)号：US09031340B2

公开(公告)日：2015-05-12

申请号：US13645543

申请日：2012-10-05

Applicant: KT Corporation

Inventor： Kyung-Su Kim ,  Bong-Ki Kim ,  Jong-Hwan Kim ,  Hyun-Ho Jeong

IPC: G06K9/46 ,  G06T1/00

CPC classification number: G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0061 ,  G06T2201/0203

Abstract: Described embodiments provide an apparatus for providing a digital image by embedding recovery feature. The apparatus may include an input unit, an extraction unit, an embedding unit, and an output unit. The input unit may be configured to receive a digital image. The extraction unit may be configured to extract recovery feature from the received digital image using quad-tree decomposition. The recovery feature may be binary data that represents unique characteristics of the received digital image. The embedding unit may be configured to embed the extracted recovery feature into the received digital image. The output unit may be configured to output the digital image embedded with the recovery feature as a feature hidden image.

Abstract translation: 描述的实施例提供了一种通过嵌入恢复特征来提供数字图像的装置。 该装置可以包括输入单元，提取单元，嵌入单元和输出单元。 输入单元可以被配置为接收数字图像。 提取单元可以被配置为使用四叉树分解从接收到的数字图像中提取恢复特征。 恢复特征可以是表示接收的数字图像的独特特征的二进制数据。 嵌入单元可以被配置为将所提取的恢复特征嵌入到所接收的数字图像中。 输出单元可以被配置为输出嵌入有恢复特征的数字图像作为特征隐藏图像。

公开(公告)号：US08818020B2

公开(公告)日：2014-08-26

申请号：US13496822

申请日：2010-09-20

Applicant: Yong Liang Guan ,  Chueh Loo Poh

Inventor： Yong Liang Guan ,  Chueh Loo Poh

IPC: G06K9/00 ,  G06T1/00

CPC classification number: G06T1/0028 ,  G06T2201/0061 ,  G06T2201/0203

Abstract: A method of preparing a digital medical image for secure transmission, the method comprising embedding data into the digital medical image using a reversible watermarking process, generating a code for tamper detection and localization from the digital medical image using a computational function, and embedding the code for tamper detection and localization into the digital medical image using the reversible watermarking process; and a method of reviewing a digital medical image prepared by the method of preparing, the method of reviewing comprising retrieving the code for tamper detection and localization from the digital medical image; reversing the watermarking processes to obtain a restored image; generating a code from the restored image using the computational function; and comparing the retrieved code for tamper detection and localization with the code generated from the restored image to detect and locate tampering.

Abstract translation: 一种准备用于安全传输的数字医学图像的方法，所述方法包括使用可逆水印处理将数据嵌入到数字医学图像中，使用计算功能从数字医学图像生成用于篡改检测和定位的代码，以及嵌入代码 使用可逆水印处理对篡改检测和定位到数字医学图像中; 以及检查通过准备所述方法准备的数字医学图像的方法，所述检查方法包括从所述数字医学图像检索用于篡改检测和定位的代码; 反转水印处理以获得恢复的图像; 使用计算功能从恢复的图像生成代码; 并将检索到的用于篡改检测和定位的代码与从还原图像生成的代码进行比较，以检测和定位篡改。

公开(公告)号：US08233677B2

公开(公告)日：2012-07-31

申请号：US12167646

申请日：2008-07-03

Applicant: Akihiko Yamada ,  Kazuhiro Kojima

Inventor： Akihiko Yamada ,  Kazuhiro Kojima

IPC: G06K9/00

CPC classification number: G06T1/0028 ,  G06K9/00221 ,  G06K9/00771 ,  G06K2009/0059 ,  G06T2201/0083 ,  G06T2201/0203 ,  H04N19/17 ,  H04N19/61

Abstract: An image-sensing apparatus has: an image-sensing portion that acquires an original image by shooting a subject; an alteration processor that applies reversible alteration to an image inside a specific region in the original image to produce from the original image an altered image; and a recording controller that records in a recording portion an image file in which the altered image is stored in association with restoration-oriented information that identifies the contents of the restoration that needs to be performed to restore the original image from the altered image.

Abstract translation: 图像感测装置具有：图像感测部，其通过拍摄被摄体获取原始图像; 改变处理器，对原始图像中的特定区域内的图像应用可逆变化，以从原始图像产生改变的图像; 以及记录控制器，其在记录部分中记录与修复的图像相关联的图像文件，所述图像文件与识别需要执行的恢复的内容的恢复导向信息相关联，以从改变的图像恢复原始图像。

公开(公告)号：US08175324B2

公开(公告)日：2012-05-08

申请号：US12253825

申请日：2008-10-17

Applicant: Guorong Xuan ,  Yun-Qing Shi

Inventor： Guorong Xuan ,  Yun-Qing Shi

IPC: G06K9/00

CPC classification number: G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0083 ,  G06T2201/0202 ,  G06T2201/0203

Abstract: Methods for reversible data hiding are disclosed herein. These methods may be applied to images for reversible image data hiding. In one embodiment, a method for reversible data hiding comprises identifying carrier data having a plurality of components and establishing prediction-errors for each of the components of the carrier data. A first threshold and a second threshold are established. The prediction-errors of the components are evaluated against the first threshold to identify components for possible hiding. The components identified for possible hiding are evaluated against the second threshold to identify components for hiding. To-be embedded data is embedded into the carrier data identified for hiding to create marked data. The marked data is evaluated for overflow or underflow. If overflow or underflow is detected, histogram modification is performed. Marked data is then established.

Abstract translation: 本文公开了可逆数据隐藏的方法。 这些方法可以应用于可逆图像数据隐藏的图像。 在一个实施例中，一种用于可逆数据隐藏的方法包括：识别具有多个分量的载波数据，并为载波数据的每个分量建立预测误差。 建立第一阈值和第二阈值。 根据第一阈值评估组件的预测误差，以识别可能隐藏的组件。 针对第二个阈值评估可识别的可能隐藏的组件以识别隐藏的组件。 要嵌入的数据嵌入到识别为隐藏以创建标记数据的载体数据中。 对标记数据进行溢出或下溢。 如果检测到溢出或下溢，则执行直方图修改。 然后建立标记数据。

公开(公告)号：US20080285793A1

公开(公告)日：2008-11-20

申请号：US12098800

申请日：2008-04-07

Applicant: Yun Qing Shi ,  Guorong Xuan

Inventor： Yun Qing Shi ,  Guorong Xuan

IPC: G06K9/00

CPC classification number: G06T1/0028 ,  G06T2201/0052 ,  G06T2201/0083 ,  G06T2201/0203

Abstract: Methods and apparatus are provided for subjecting an original, pixel domain image to an Integer Wavelet Transform (IWT) to obtain a matrix of wavelet coefficients; selecting at least one bit plane between a least significant bit plane and a most significant bit plane of the matrix of wavelet coefficients; compressing the at least one selected bit plane to produce free space in the at least one selected bit plane; embedding hidden data in the free space of the at least one compressed bit plane; and subjecting the at least one embedded bit plane to an Inverse IWT to produce a marked pixel domain image. Methods and apparatus are also provided for reversing this process.

Abstract translation: 提供了将原始像素域图像进行整数小波变换（IWT）的方法和装置，以获得小波系数矩阵; 选择小波系数矩阵的最低有效位平面和最高有效位平面之间的至少一个位平面; 压缩所述至少一个所选位平面以在所述至少一个所选位平面中产生自由空间; 将所述隐藏数据嵌入所述至少一个压缩位平面的自由空间中; 以及使所述至少一个嵌入位平面经受反向IWT以产生标记的像素域图像。 还提供了用于逆转该过程的方法和装置。

公开(公告)号：US07424130B2

公开(公告)日：2008-09-09

申请号：US10935792

申请日：2004-09-07

Applicant: Tetsujiro Kondo ,  Yoshinori Watanabe ,  Kenji Tanaka

Inventor： Tetsujiro Kondo ,  Yoshinori Watanabe ,  Kenji Tanaka

IPC: G06K9/00 ,  H04N1/46 ,  G06K9/36

CPC classification number: G06T1/0035 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0083 ,  G06T2201/0203 ,  H04N1/32144 ,  H04N1/32224 ,  H04N5/781 ,  H04N5/85 ,  H04N5/907 ,  H04N19/00 ,  H04N19/46 ,  H04N2005/91335

Abstract: The invention relates to a coding apparatus for embedding second data into first data without deteriorating the first data and a decoding apparatus for decoding coded data into original first data and second data without deteriorating those data. The invention provides a coding apparatus which has a memory for storing at least partial data of first data, and embeds second data into the first data by rearranging, according to the second data, the at least partial data of the first data that is stored in the memory. The invention also provides a coding apparatus for decoding coded data in which second data is embedded and at least partial data of the coded data has been subjected to rearrangement by using one of a plurality of rearrangement patterns. The decoding apparatus calculates correlation between adjacent data for each rearrangement pattern, and decodes the original first data and the second data according to a rearrangement pattern that is determined based on the correlation.

Abstract translation: 本发明涉及一种用于将第二数据嵌入第一数据而不使第一数据恶化的编码装置，以及用于将编码数据解码为原始第一数据和第二数据的解码装置，而不会使这些数据恶化。 本发明提供了一种编码装置，其具有用于存储第一数据的至少部分数据的存储器，并且通过根据第二数据重新排列存储在第一数据中的第一数据的至少部分数据，将第二数据嵌入到第一数据中 记忆。 本发明还提供了一种编码装置，用于对其中嵌入第二数据的编码数据进行解码，并且通过使用多个重排模式中的一种来编码数据的至少部分数据已被重新排列。 解码装置计算每个重排模式的相邻数据之间的相关性，并且根据基于相关性确定的重排模式对原始第一数据和第二数据进行解码。

公开(公告)号：US07415155B2

公开(公告)日：2008-08-19

申请号：US10823086

申请日：2004-04-12

Applicant: Yun-Qing Shi ,  Zhi-Cheng Ni ,  Nirwan Ansari

Inventor： Yun-Qing Shi ,  Zhi-Cheng Ni ,  Nirwan Ansari

IPC: G06K9/00

CPC classification number: G06T1/0092 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0203 ,  H04N1/32208 ,  H04N1/32251

Abstract: Methods and apparatus are provided for encoding a pixel domain image with hidden data by modifying the histogram of the pixel domain image to make space for such hidden data.

Abstract translation: 提供了用于通过修改像素域图像的直方图来对具有隐藏数据的像素域图像进行编码以为这种隐藏数据腾出空间的方法和装置。

公开(公告)号：US07356158B2

公开(公告)日：2008-04-08

申请号：US10737327

申请日：2003-12-16

Applicant: Yun-Qing Shi ,  Guorong Xuan

Inventor： Yun-Qing Shi ,  Guorong Xuan

IPC: G06K9/00 ,  G06K9/36

CPC classification number: G06T1/0028 ,  G06T2201/0052 ,  G06T2201/0083 ,  G06T2201/0203

Abstract: Methods and apparatus are provided for subjecting an original, pixel domain image to an Integer Wavelet Transform (IWT) to obtain a matrix of wavelet coefficients; selecting at least one bit plane between a least significant bit plane and a most significant bit plane of the matrix of wavelet coefficients; compressing the at least one selected bit plane to produce free space in the at least one selected bit plane; embedding hidden data in the free space of the at least one compressed bit plane; and subjecting the at least one embedded bit plane to an Inverse IWT to produce a marked pixel domain image. Methods and apparatus are also provided for reversing this process.

Abstract translation: 提供了将原始像素域图像进行整数小波变换（IWT）的方法和装置，以获得小波系数矩阵; 选择小波系数矩阵的最低有效位平面和最高有效位平面之间的至少一个位平面; 压缩所述至少一个所选位平面以在所述至少一个所选位平面中产生自由空间; 将所述隐藏数据嵌入所述至少一个压缩位平面的自由空间中; 以及使所述至少一个嵌入位平面经受反向IWT以产生标记的像素域图像。 还提供了用于逆转该过程的方法和装置。

公开(公告)号：US07239717B2

公开(公告)日：2007-07-03

申请号：US11292740

申请日：2005-12-02

Applicant: Jessica Fridrich ,  Miroslav Goljan ,  Rui Du

Inventor： Jessica Fridrich ,  Miroslav Goljan ,  Rui Du

IPC: G06K9/00 ,  G06K9/46

CPC classification number: G06T1/0028 ,  G06T2201/0083 ,  G06T2201/0203 ,  H04N1/32203 ,  H04N1/32208 ,  H04N1/32229 ,  H04N1/32251 ,  H04N1/32341 ,  H04N1/32347

Abstract: Current methods of embedding hidden data in an image inevitably distort the original image by noise. This distortion cannot generally be removed completely because of quantization, bit-replacement, or truncation at the grayscales 0 and 255. The distortion, though often small, may make the original image unacceptable for medical applications, or for military and law enforcement applications where an image must be inspected under unusual viewing conditions (e.g., after filtering or extreme zoom). The present invention provides high-capacity embedding of data that is lossless (or distortion-free) because, after embedded information is extracted from a cover image, we revert to an exact copy of the original image before the embedding took place. This new technique is a powerful tool for a variety of tasks, including lossless robust watermarking, lossless authentication with fragile watermarks, and steganalysis. The technique is applicable to raw, uncompressed formats (e.g., BMP, PCX, PGM, RAS, etc.), lossy image formats (JPEG, JPEG2000, wavelet), and palette formats (GIF, PNG).

Abstract translation: 将隐藏数据嵌入到图像中的当前方法不可避免地使原始图像由噪声失真。 由于在灰度0和255处的量化，位替换或截断，这种失真通常不能被完全去除。失真尽管经常很小，但可能会使原始图像对于医疗应用或军事和执法应用而言是不可接受的，其中 必须在异常观看条件下检查图像（例如，过滤或极大变焦后）。 本发明提供了无损（或无失真）的数据的高容量嵌入，因为在从封面图像提取嵌入信息之后，在嵌入发生之前，我们恢复原始图像的精确拷贝。 这种新技术是用于各种任务的强大工具，包括无损鲁棒水印，易损水印的无损认证和隐写分析。 该技术适用于原始的未压缩格式（例如，BMP，PCX，PGM，RAS等），有损图像格式（JPEG，JPEG2000，小波）和调色板格式（GIF，PNG）。

公开(公告)号：US07203336B2

公开(公告)日：2007-04-10

申请号：US11103005

申请日：2005-04-11

Applicant: Jonathan James Stone ,  Stephen Mark Keating

Inventor： Jonathan James Stone ,  Stephen Mark Keating

IPC: G06K9/00

CPC classification number: G06T1/005 ,  G06T1/0028 ,  G06T2201/0052 ,  G06T2201/0081 ,  G06T2201/0083 ,  G06T2201/0202 ,  G06T2201/0203 ,  H04N1/32154 ,  H04N1/3217 ,  H04N1/32347 ,  H04N2201/328

Abstract: A method of embedding data in material comprises the steps of: embedding data in original material to produce data embedded material; removing the watermark from the data embedded material to produce recovered material; comparing the original and recovered material to determine the differences and locations of differences therebetween; and storing the said locations and corrections which correct the said differences. A method of removing the data embedded in the material, comprises the steps of: removing the data from the material to produce recovered material; deriving the said corrections and locations from the said store; and using the corrections to correct the recovered material at the said locations. A method of embedding data in material, preferably comprises the steps of: producing transform coefficients Ci representing a spatial frequency transform of the material, and combining the coefficients Ci with the data bits Ri to produce a modified coefficient Ci′ where Ci′=Ci+αi Ri the method further comprising determining αi for each unmodified coefficient Ci as a function F{Cn}i of a predetermined set {Cn}i of transform coefficients Cn which set excludes the coefficient Ci.

Abstract translation: 材料中嵌入数据的方法包括以下步骤