Image data processing systems for hiding secret information and data hiding methods using the same
    1.
    发明授权
    Image data processing systems for hiding secret information and data hiding methods using the same 失效
    用于隐藏秘密信息的图像数据处理系统和使用其的数据隐藏方法

    公开(公告)号:US08363889B2

    公开(公告)日:2013-01-29

    申请号:US12820512

    申请日:2010-06-22

    IPC分类号: G06K9/00

    摘要: An image data processing system includes an image input module, a bit map generation module and an encoding module. The image input module receives an image and secret information and obtains at least one gray-level image according to image. The bit map generation module generates a bit map image according to gray-level image and generates an ordered dithering block truncation coding (ODBTC) image according to bit map image and gray-level image. The encoding module generates an encoded gray-level image according to bit map image and secret information, wherein the encoding module divides gray-level image into image blocks, finds candidate blocks with close black and white pixel numbers among the image blocks, selects high frequency blocks belong to the high frequency region of the image from candidate blocks, and randomly embeds secret information into high frequency blocks to generate encoded gray-level image with secret information embedded therein.

    摘要翻译: 图像数据处理系统包括图像输入模块,位图生成模块和编码模块。 图像输入模块接收图像和秘密信息,并根据图像获得至少一个灰度图像。 位图生成模块根据灰度图像生成位图图像,并根据位图图像和灰度图像生成有序抖动块截断编码(ODBTC)图像。 编码模块根据位图图像和秘密信息生成编码灰度级图像,其中编码模块将灰度级图像分割为图像块,在图像块中找到具有近似黑白像素数的候选块,选择高频 块属于来自候选块的图像的高频区域,并且将秘密信息随机嵌入高频块以生成其中嵌入有秘密信息的编码灰度图像。

    IMAGE DATA PROCESSING SYSTEMS FOR HIDING SECRET INFORMATION AND DATA HIDING METHODS USING THE SAME
    2.
    发明申请
    IMAGE DATA PROCESSING SYSTEMS FOR HIDING SECRET INFORMATION AND DATA HIDING METHODS USING THE SAME 失效
    用于隐藏秘密信息和数据隐藏方法的图像数据处理系统

    公开(公告)号:US20110051995A1

    公开(公告)日:2011-03-03

    申请号:US12849804

    申请日:2010-08-03

    IPC分类号: G06K9/00

    CPC分类号: G06T1/0021

    摘要: A system for hiding secret data in halftone images is disclosed. The system includes an image input module, a halftoning processing module and an image output module. The image input module reads an original image data and a secret image data. The halftoning processing module is coupled to the image input module and receives the original image data and the secret image data, performs a first error diffusion process to the original image to generate a first halftone image and performs a second error diffusion process to the original image data and the secret image data to generate a second halftone image. The image output image module is coupled to the halftoning processing module and outputs the first halftone image and the second halftone image, wherein the second error diffusion process comprises adding or subtracting a variable noise strength to or from each pixel of the secret image.

    摘要翻译: 公开了一种在半色调图像中隐藏秘密数据的系统。 该系统包括图像输入模块,半色调处理模块和图像输出模块。 图像输入模块读取原始图像数据和秘密图像数据。 半色调处理模块耦合到图像输入模块并接收原始图像数据和秘密图像数据,对原始图像执行第一误差扩散处理以产生第一半色调图像,并对原始图像执行第二误差扩散处理 数据和秘密图像数据以产生第二半色调图像。 图像输出图像模块耦合到半色调处理模块并输出第一半色调图像和第二半色调图像,其中第二误差扩散处理包括向秘密图像的每个像素添加或减去可变噪声强度。

    IMAGE DATA PROCESSIG SYSTEMS FOR HIDING SECRET INFORMATION AND DATA HIDING METHODS USING THE SAME
    3.
    发明申请
    IMAGE DATA PROCESSIG SYSTEMS FOR HIDING SECRET INFORMATION AND DATA HIDING METHODS USING THE SAME 失效
    用于隐藏秘密信息和数据隐藏方法的图像数据处理系统

    公开(公告)号:US20110194727A1

    公开(公告)日:2011-08-11

    申请号:US12820512

    申请日:2010-06-22

    IPC分类号: G06K9/00

    摘要: An image data processing system includes an image input module, a bit map generation module and an encoding module. The image input module receives an image and secret information and obtains at least one gray-level image according to image. The bit map generation module generates a bit map image according to gray-level image and generates an ordered dithering block truncation coding (ODBTC) image according to bit map image and gray-level image. The encoding module generates an encoded gray-level image according to bit map image and secret information, wherein the encoding module divides gray-level image into image blocks, finds candidate blocks with close black and white pixel numbers among the image blocks, selects high frequency blocks belong to the high frequency region of the image from candidate blocks, and randomly embeds secret information into high frequency blocks to generate encoded gray-level image with secret information embedded therein.

    摘要翻译: 图像数据处理系统包括图像输入模块,位图生成模块和编码模块。 图像输入模块接收图像和秘密信息,并根据图像获得至少一个灰度图像。 位图生成模块根据灰度图像生成位图图像,并根据位图图像和灰度图像生成有序抖动块截断编码(ODBTC)图像。 编码模块根据位图图像和秘密信息生成编码灰度级图像,其中编码模块将灰度级图像分割为图像块,在图像块中找到具有近似黑白像素数的候选块,选择高频 块属于来自候选块的图像的高频区域,并且将秘密信息随机嵌入高频块以生成其中嵌入有秘密信息的编码灰度图像。

    Image data processing systems for hiding secret information and data hiding methods using the same
    4.
    发明授权
    Image data processing systems for hiding secret information and data hiding methods using the same 失效
    用于隐藏秘密信息的图像数据处理系统和使用其的数据隐藏方法

    公开(公告)号:US08351644B2

    公开(公告)日:2013-01-08

    申请号:US12849804

    申请日:2010-08-03

    IPC分类号: G06K9/00

    CPC分类号: G06T1/0021

    摘要: A system for hiding secret data in halftone images is disclosed. The system includes an image input module, a halftoning processing module and an image output module. The image input module reads an original image data and a secret image data. The halftoning processing module is coupled to the image input module and receives the original image data and the secret image data, performs a first error diffusion process to the original image to generate a first halftone image and performs a second error diffusion process to the original image data and the secret image data to generate a second halftone image. The image output image module is coupled to the halftoning processing module and outputs the first halftone image and the second halftone image, wherein the second error diffusion process comprises adding or subtracting a variable noise strength to or from each pixel of the secret image.

    摘要翻译: 公开了一种在半色调图像中隐藏秘密数据的系统。 该系统包括图像输入模块,半色调处理模块和图像输出模块。 图像输入模块读取原始图像数据和秘密图像数据。 半色调处理模块耦合到图像输入模块并接收原始图像数据和秘密图像数据,对原始图像执行第一误差扩散处理以产生第一半色调图像,并对原始图像执行第二误差扩散处理 数据和秘密图像数据以产生第二半色调图像。 图像输出图像模块耦合到半色调处理模块并输出第一半色调图像和第二半色调图像,其中第二误差扩散处理包括向秘密图像的每个像素添加或减去可变噪声强度。