公开(公告)号：US07974477B2

公开(公告)日：2011-07-05

申请号：US11676399

申请日：2007-02-19

Applicant: Yun Qing Shi ,  Guorong Xuan

Inventor： Yun Qing Shi ,  Guorong Xuan

IPC: G06K9/36

CPC classification number: H04N1/32187 ,  G06T1/0035 ,  G06T1/0057 ,  G06T2201/0051 ,  G06T2201/0052 ,  G06T2201/0061 ,  H04N1/32165 ,  H04N1/32277 ,  H04N1/32347 ,  H04N1/32352

Abstract: Embodiments of the invention are directed toward reversible/invertible and lossless, image data hiding that can imperceptibly hide data into digital images and can reconstruct the original image without any distortion after the hidden data have been extracted in various digital image formats including, but not limited to Joint Photographic Experts Group (JPEG). In particular, embodiments of the invention provide a lossless data hiding technique for JPEG images based on histogram pairs. that embeds data into the JPEG quantized 8×8 block DCT coefficients and achieves good performance in terms of peak signal-to-noise ratio (PSNR) versus payload through manipulating histogram pairs with optimum threshold and optimum region of the JPEG DCT coefficients. Furthermore, the invented technology is expected to be able to apply to the I-frame of Motion Picture Experts Group (MPEG) video for various applications including annotation, authentication, and forensics.

Abstract translation: 本发明的实施例涉及可逆/可逆和无损的图像数据隐藏，其可以不可知地将数据隐藏到数字图像中，并且可以在以各种数字图像格式提取隐藏数据之后重建原始图像而没有任何失真，包括但不限于 联合图像专家组（JPEG）。 特别地，本发明的实施例提供了一种基于直方图对的JPEG图像的无损数据隐藏技术，其将数据嵌入到JPEG量化的8×8块DCT系数中，并且在峰值信噪比（PSNR）方面实现了良好的性能 ）与有效载荷通过操纵具有JPEG DCT系数的最佳阈值和最佳区域的直方图对。 此外，本发明的技术预期能够应用于运动图像专家组（MPEG）视频的I帧，用于包括注释，认证和取证的各种应用。

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：US07826638B2

公开(公告)日：2010-11-02

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 ,  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：US08041124B2

公开(公告)日：2011-10-18

申请号：US11624595

申请日：2007-01-18

Applicant: Yun Qing Shi ,  Wen Chen

Inventor： Yun Qing Shi ,  Wen Chen

IPC: G06K9/62

CPC classification number: G06K9/4652 ,  G06K9/00664 ,  G06K9/527

Abstract: Computer graphics may be detected in digital images by extracting a first set of features from an input digital image, extracting a second set of features from a prediction-error image derived from the input digital image, and applying a classification algorithm to the first set of features and the second set of features to determine if the combined sets of features indicate that the input digital image corresponds to computer graphics.

Abstract translation: 可以通过从输入数字图像提取第一组特征，从从输入数字图像导出的预测误差图像中提取第二组特征，并且将分类算法应用于第一组特征 特征和第二组特征来确定组合的特征集合是否表示输入的数字图像对应于计算机图形。