公开(公告)号：US06870944B1

公开(公告)日：2005-03-22

申请号：US09587838

申请日：2000-06-06

Applicant: Tetsujiro Kondo ,  Naoki Kobayashi

Inventor： Tetsujiro Kondo ,  Naoki Kobayashi

IPC: H04N7/50 ,  G06T1/00 ,  G06K9/00 ,  G06K9/36

CPC classification number: G06T1/0035 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0061 ,  G06T2201/0065 ,  G06T2201/0203

Abstract: An image processing apparatus embeds information into image data without an overhead. The image processing apparatus includes a selection unit for selecting some of the pixels forming the image data. A changing unit embeds the information into the pixels selected by the selection unit by swapping the bits of the values of the selected pixels according to the information.

Abstract translation: 图像处理装置将信息嵌入到图像数据中而不产生开销。 图像处理装置包括用于选择形成图像数据的一些像素的选择单元。 改变单元通过根据该信息交换所选择的像素的值的位，将信息嵌入到由选择单元选择的像素中。

公开(公告)号：US20040086196A1

公开(公告)日：2004-05-06

申请号：US10377929

申请日：2003-02-27

Applicant: Xerox Corporation

Inventor： Steven J. Harrington

IPC: G06K009/36

CPC classification number: G06T1/0071 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0083 ,  G06T2201/0203

Abstract: A first digital image is combined with a transformed first digital image to authenticate and reconstruct the first digital image. When viewed in the standard manner, the combined image appears to be the first digital image. The transformed first digital image cannot be seen. When the bits within each pixel of the combined image are reversed, i.e. the least significant bit (LSB) is exchanged with the most significant bit (MSB), and the resultant image is viewed, then the transformed first digital image is seen. In this way, the transformed first digital image can be hidden inside the noise bits of the first digital image. The method is applied to color pixels by treating each color byte independently. The transformed first digital image can be encrypted before combining with the first digital image. The transformed first digital image can be inversely transformed back to the first digital image for authentication and reconstruction.

Abstract translation: 第一数字图像与变换的第一数字图像组合以认证和重建第一数字图像。 当以标准方式观看时，组合图像看起来是第一个数字图像。 转换的第一个数字图像不能被看到。 当组合图像的每个像素内的位相反时，即最低有效位（LSB）与最高有效位（MSB）交换，并且看到所得到的图像，则可以看到变换的第一数字图像。 以这种方式，变换的第一数字图像可以被隐藏在第一数字图像的噪声比特内。 该方法通过独立处理每个颜色字节应用于彩色像素。 经转换的第一数字图像可以在与第一数字图像组合之前进行加密。 经变换的第一数字图像可以逆向转换回第一数字图像进行认证和重构。

公开(公告)号：US20030081809A1

公开(公告)日：2003-05-01

申请号：US09977443

申请日：2001-10-15

Inventor： Jessica Fridrich ,  Miroslav Goljan ,  Rui Du

IPC: G06K009/00

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噪声原始图像失真。 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：US20020059520A1

公开(公告)日：2002-05-16

申请号：US09969778

申请日：2001-10-04

Inventor： Tomochika Murakami ,  Keiichi Iwamura

IPC: H04L009/00

CPC classification number: G06T1/0028 ,  G06T2201/0203 ,  H04N1/32144 ,  H04N2201/3225 ,  H04N2201/327

Abstract: An object of the present invention is to assuredly provide image data with the position of a region of interest in an image represented by the image data. In order to achieve this object, position information for specifying a region of interest within the image is embedded so as not to be recognized by human eyes, using a digital-watermark technique.

Abstract translation: 本发明的目的是确保在由图像数据表示的图像中提供具有感兴趣区域的位置的图像数据。 为了实现该目的，使用数字水印技术嵌入用于指定图像内的感兴趣区域的位置信息，使得不被人眼识别。

公开(公告)号：US5912972A

公开(公告)日：1999-06-15

申请号：US824174

申请日：1997-03-26

Applicant: James M. Barton

Inventor： James M. Barton

IPC: G06T1/00 ,  H04L9/32 ,  H04N1/32 ,  H04N1/44 ,  H04N7/167 ,  H04N21/2389 ,  H04N21/8358 ,  H04L9/00

CPC classification number: H04N7/1675 ,  G06T1/0028 ,  G06T1/0057 ,  H04L9/3247 ,  H04N1/32144 ,  H04N1/32154 ,  H04N1/32277 ,  H04N1/4486 ,  H04N21/23892 ,  H04N21/8358 ,  G06T2201/0051 ,  G06T2201/0061 ,  G06T2201/0065 ,  G06T2201/0083 ,  G06T2201/0203 ,  H04L2209/34 ,  H04L2209/60 ,  H04N2201/3233 ,  H04N2201/327 ,  H04N2201/3281

Abstract: Arbitrary digital information is embedded within a stream of digital data, in a way that avoids detection by a casual observer and that allows a user to determine whether the digital data have been modified from their intended form. The embedded information may only be extracted as authorized and may be used to verify that the original digital data stream has not been modified.

公开(公告)号：US09639912B2

公开(公告)日：2017-05-02

申请号：US14585749

申请日：2014-12-30

Applicant: University of Macau

Inventor： Jiantao Zhou ,  Weiwei Sun ,  Li Dong

IPC: G06F21/62 ,  G06T1/00 ,  G06K9/62 ,  G06K9/52 ,  G09C5/00 ,  H04L9/06

CPC classification number: G06T1/005 ,  G06K9/52 ,  G06K9/6215 ,  G06K9/6267 ,  G06T1/0035 ,  G06T2201/0053 ,  G06T2201/0061 ,  G06T2201/0083 ,  G06T2201/0203 ,  G09C5/00 ,  H04L9/0637 ,  H04L2209/16

Abstract: A method for reversible image data hiding includes steps of encrypting an original image by an encryption process to generate an encrypted image, embedding a message into the encrypted image by an embedment process to generate an embedded image, and extracting the message and the original image from the embedded image by a decryption and extraction process. The encryption process includes generating a key stream by using a secret encryption key, and generating an encrypted image by XORing the original image with the key stream. The embedment process includes generating an embedded image by embedding the message via XORing the encrypted image with a predetermined public key set.

公开(公告)号：US20160189325A1

公开(公告)日：2016-06-30

申请号：US14585749

申请日：2014-12-30

Applicant: University of Macau

Inventor： Jiantao ZHOU ,  Weiwei SUN ,  Li DONG

IPC: G06T1/00 ,  G06K9/52 ,  G06T7/60 ,  H04L9/08 ,  G06K9/62

CPC classification number: G06T1/005 ,  G06K9/52 ,  G06K9/6215 ,  G06K9/6267 ,  G06T1/0035 ,  G06T2201/0053 ,  G06T2201/0061 ,  G06T2201/0083 ,  G06T2201/0203 ,  G09C5/00 ,  H04L9/0637 ,  H04L2209/16

Abstract: A method for reversible image data hiding comprising: encrypting an original image by an encryption process to generate an encrypted image, embedding a message into the encrypted image by an embedment process to generate an embedded image, and extracting the message and the original image from the embedded image by a decryption and extraction process. The encryption process including: generating a key stream by using a secret encryption key, and generating an encrypted image by XORing the original image with the key stream. The embedment process including: generating an embedded image by embedding the message via XORing the encrypted image with a predetermined public key set.

Abstract translation: 一种用于可逆图像数据隐藏的方法，包括：通过加密处理加密原始图像以生成加密图像，通过嵌入处理将消息嵌入到加密图像中以生成嵌入图像，以及从该图像提取消息和原始图像 通过解密和提取过程嵌入图像。 该加密处理包括：通过使用秘密加密密钥生成密钥流，并且通过用密钥流对原始图像进行异或来生成加密图像。 嵌入处理包括：通过使用预定的公共密钥集合对加密的图像进行异或来嵌入消息来生成嵌入图像。

公开(公告)号：US08837770B2

公开(公告)日：2014-09-16

申请号：US13137793

申请日：2011-09-13

Applicant: Jun Takahashi ,  Shohei Nakagata ,  Kensuke Kuraki ,  Taizo Anan

Inventor： Jun Takahashi ,  Shohei Nakagata ,  Kensuke Kuraki ,  Taizo Anan

IPC: G06K9/00 ,  H04N1/44 ,  G06T1/00

CPC classification number: H04N1/4486 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0203

Abstract: When creating a marker, an encryption apparatus extracts each pixel value in a region and allows a storing unit to save, as restoration information, the high-order bits of each extracted pixel value. Then, the encryption apparatus creates a marker by changing the high-order bits of the pixel value in a region in which the marker is created and embeds encrypted information in an encrypted region specified by the marker. When decoding the encrypted information, a decoding apparatus detects the marker from a digital image, decodes the encrypted information in the encrypted region specified by the marker, and overwrites bits contained in the restoration information with the high-order bits of the pixel value of the marker.

Abstract translation: 当创建标记时，加密装置提取区域中的每个像素值，并且允许存储单元将恢复信息保存在每个提取的像素值的高位中。 然后，加密装置通过改变创建标记的区域中的像素值的高位来创建标记，并将加密信息嵌入由标记指定的加密区域中。 当对加密信息进行解码时，解码装置从数字图像中检测标记，对由标记指定的加密区域中的加密信息进行解码，并且以包含在恢复信息中的比特的高位 标记。

公开(公告)号：US20130089257A1

公开(公告)日：2013-04-11

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

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：US20120269412A1

公开(公告)日：2012-10-25

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: G06K9/36

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。