HALFTONE IMAGE GENERATION METHOD AND IMAGE PROCESSING SYSTEM AND COMPUTER PROGRAM PRODUCT THEREOF
    1.
    发明申请
    HALFTONE IMAGE GENERATION METHOD AND IMAGE PROCESSING SYSTEM AND COMPUTER PROGRAM PRODUCT THEREOF 失效
    HALFTONE图像生成方法和图像处理系统及其计算机程序产品

    公开(公告)号:US20110142340A1

    公开(公告)日:2011-06-16

    申请号:US12899245

    申请日:2010-10-06

    IPC分类号: G06K9/00

    CPC分类号: H04N1/4052

    摘要: A halftone image generation method used in a system including an image input module and a halftoning processing module for generating a halftone image is disclosed. First, an original image is received by the image input module and a dot diffusion process is performed to the original image to generate the halftone image using a first class matrix with a first size and a corresponding first diffused weighting matrix with a first diffused area size, wherein the first class matrix indicates a processing order of the dot diffusion process and the first class matrix with the first size, the first diffused area size and the corresponding first diffused weighting matrix with the first diffused area size are optimized results determined in advance by the halftoning processing module according to class matrixes of different sizes and diffused areas of different sizes.

    摘要翻译: 公开了一种在包括用于产生半色调图像的图像输入模块和半色调处理模块的系统中使用的半色调图像生成方法。 首先,由图像输入模块接收原始图像,并且对原始图像执行点扩散处理,以使用具有第一尺寸的第一等级矩阵和具有第一扩散区域尺寸的相应的第一扩散加权矩阵来生成半色调图像 其中,所述第一类矩阵表示所述点扩散处理的处理顺序,具有第一大小的第一等级矩阵,第一扩散区域大小和具有第一扩散区域大小的对应的第一扩散加权矩阵是由 根据不同大小的类矩阵和不同大小的扩散区域的半色调处理模块。

    IMAGE DATA PROCESSIG SYSTEMS FOR HIDING SECRET INFORMATION AND DATA HIDING METHODS USING THE SAME
    2.
    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。