公开(公告)号：US20140016775A1

公开(公告)日：2014-01-16

申请号：US14030629

申请日：2013-09-18

Applicant: FUJITSU LIMITED

Inventor： Jun TAKAHASHI ,  Shohei NAKAGATA ,  Kensuke KURAKI ,  Taizo ANAN

IPC: H04L9/28

CPC classification number: H04L9/28 ,  G09C5/00 ,  H04N1/32224 ,  H04N1/32229 ,  H04N1/32309 ,  H04N1/448

Abstract: An image processing apparatus includes: a dividing unit dividing at least one region on a digitalized image into multiple blocks; a scrambling unit producing an encrypted image by rearranging each block; a pixel value judging unit judging, for each block on the encrypted image, whether a difference between a statistically representative value of a pixel value of a first region included in the block and a statistically representative value of a pixel value of a second region is no smaller than a predetermined value, the second region being included in a block adjacent to the block and being adjacent to the first region; and a pixel value converting unit converting the pixel value of the first region in each block having the difference smaller than the predetermined value, while not converting the pixel value of the first region in each block having the difference no smaller than the predetermined value.

Abstract translation: 一种图像处理装置包括：分割单元，将数字化图像上的至少一个区域划分成多个块; 加扰单元，通过重新排列每个块来产生加密图像; 像素值判定单元，对加密图像上的每个块判断包含在块中的第一区域的像素值的统计学上代表值与第二区域的像素值的统计学上代表值之间的差为否 小于预定值，所述第二区域被包括在与所述块相邻并且与所述第一区域相邻的块中; 以及像素值转换单元，其将不同于预定值的差异的每个块中的第一区域的像素值转换为不具有不同于预定值的差异的块中的第一区域的像素值。

公开(公告)号：US20130170695A1

公开(公告)日：2013-07-04

申请号：US13775850

申请日：2013-02-25

Applicant: Fujitsu Limited

Inventor： Taizo ANAN ,  Kensuke KURAKI ,  Shohei NAKAGATA ,  Jun TAKAHASHI

IPC: G06T1/00

CPC classification number: G06T1/0021 ,  G06T1/0085 ,  G06T2201/0051 ,  H04N19/467

Abstract: A digital watermark embedding apparatus includes an interface unit which acquires video data and digital watermark information, and a processing unit which embeds the digital watermark information into the video data. The processing unit is adapted to: determine the position of a watermark pattern so that the watermark pattern moves with time according to the value of a symbol contained in the digital watermark information within a first moving range that contains at least a portion of a reference region on each image, and so that the average pixel value of the reference region overlapped with the watermark pattern varies in a periodic fashion as the watermark pattern moves; and correct the value of each pixel contained in a region where the reference region and the watermark pattern overlap each other by using the value of a corresponding one of the pixels contained in the watermark pattern.

Abstract translation: 数字水印嵌入装置包括：获取视频数据和数字水印信息的接口单元;以及将数字水印信息嵌入到视频数据中的处理单元。 所述处理单元适于：确定水印图案的位置，使得所述水印图案随着包含在包含参考区域的至少一部分的第一移动范围内的数字水印信息中包含的符号的值随时间移动 使得与水印图案重叠的参考区域的平均像素值随水印图案移动而以周期性方式变化; 并且通过使用包含在水印图案中的对应的一个像素的值来校正包含在参考区域和水印图案彼此重叠的区域中的每个像素的值。