PIXEL PERTURBATION FOR TRANSMISSION OF META-INFORMATION
    4.
    发明申请
    PIXEL PERTURBATION FOR TRANSMISSION OF META-INFORMATION 有权
    用于传输元信息的像素预测

    公开(公告)号:US20160373609A1

    公开(公告)日:2016-12-22

    申请号:US14743580

    申请日:2015-06-18

    申请人: VMware, Inc.

    IPC分类号: H04N1/32 G06T7/00 G06T1/00

    摘要: Techniques disclosed herein provide an approach using pixel perturbation to transmit information. In one embodiment, a pixel perturbation engine perturbs pixels of an image to encode meta-information therein. In particular, the perturbation engine may perform controlled perturbation of pixel bits which are unlikely to affect visual quality are perturbed, such as perturbing the least significant bits in one or more channels of a RGB or YUV image. Higher order bits may also be perturbed in color channels such as the blue or UV channels that the human eye is less sensitive to. To mitigate loss of information, the information may be encoded using error correcting codes. After the image having meta-information encoded therein is transmitted to a client device, the meta-information may be recovered and used to determine performance of the virtual desktop infrastructures (VDI) system.

    摘要翻译: 本文公开的技术提供了使用像素扰动来发送信息的方法。 在一个实施例中,像素扰动引擎扰乱图像的像素以在其中编码元信息。 特别地,扰动引擎可以执行不受影响视觉质量的像素位的受控扰动,例如扰乱RGB或YUV图像的一个或多个通道中的最低有效位。 颜色通道也可能会受到较高阶位的影响,例如人眼不太敏感的蓝色或紫外线通道。 为了减轻信息丢失,可以使用纠错码对信息进行编码。 在将其中编码的元信息的图像发送到客户端设备之后,元信息可以被恢复并用于确定虚拟桌面基础设施(VDI)系统的性能。

    PRINT DATA PROCESSING APPARATUS AND NON-TRANSITORY COMPUTER READABLE MEDIUM STORING PROGRAM
    5.
    发明申请
    PRINT DATA PROCESSING APPARATUS AND NON-TRANSITORY COMPUTER READABLE MEDIUM STORING PROGRAM 有权
    打印数据处理设备和非终端计算机可读介质存储程序

    公开(公告)号:US20160292545A1

    公开(公告)日:2016-10-06

    申请号:US14877255

    申请日:2015-10-07

    发明人: Michio HAYAKAWA

    IPC分类号: G06K15/02 G06F3/12

    摘要: Provided is a print data processing apparatus including an intermediate data acquisition section that acquires intermediate data which is generated from document data described in a page description language and includes plural image elements, an extraction section that extracts image elements of a watermark from among the image elements of the intermediate data acquired by the intermediate data acquisition section, a deformation section that deforms each of the image elements of the watermark extracted by the extraction section into a shape that does not include an overlapping portion between the image elements of the watermark, and an output section that outputs an image element group of the watermark deformed by the deformation section, to an image data generation device that generates image data for a printing device from the intermediate data.

    摘要翻译: 提供了一种打印数据处理装置,包括中间数据获取部分,其获取从以页面描述语言描述的文档数据生成并包括多个图像元素的中间数据;提取部分,从图像元素中提取水印的图像元素 由中间数据获取部分获取的中间数据的变形部分,使由提取部分提取的水印的每个图像元素变形为不包括水印的图像元素之间的重叠部分的形状的变形部分和 输出部分,其将由变形部变形的水印的图像元素组输出到从中间数据生成用于打印装置的图像数据的图像数据生成装置。

    Method and system for embedding covert data in text document using character rotation
    9.
    发明授权
    Method and system for embedding covert data in text document using character rotation 有权
    使用字符旋转在文本文档中嵌入隐藏数据的方法和系统

    公开(公告)号:US08402371B2

    公开(公告)日:2013-03-19

    申请号:US12933207

    申请日:2009-03-17

    IPC分类号: G06F17/21

    摘要: A method and system for embedding data covertly in a text document using character rotation encoding. A character that occurs in first and second occurrences is selected, where the first occurrence of the character is a reference character and the second occurrence of the character as a rotatable character. The rotational orientation of the rotatable character is altered to produce an altered character with a predetermined rotation with respect to the reference character, wherein the rotation represents the embedded covert data. A text document is formatted based on the altered character.

    摘要翻译: 一种用于使用字符旋转编码隐藏在文本文档中的数据的方法和系统。 选择在第一次和第二次出现中发生的字符,其中字符的第一次出现是参考字符,并且该字符的第二次出现作为可旋转字符。 可旋转角色的旋转取向被改变以产生具有相对于参考字符的预定旋转的改变的角色,其中旋转表示嵌入的隐蔽数据。 文本文档基于改变的字符进行格式化。