DIGITAL HALFTONING METHOD UTILIZING DIFFUSED WEIGHTING AND CLASS MATRIX OPTIMIZATION
    11.
    发明申请
    DIGITAL HALFTONING METHOD UTILIZING DIFFUSED WEIGHTING AND CLASS MATRIX OPTIMIZATION 失效
    使用扩展加权和类矩阵优化的数字化方法

    公开(公告)号:US20100033764A1

    公开(公告)日:2010-02-11

    申请号:US12187546

    申请日:2008-08-07

    IPC分类号: H04N1/405

    CPC分类号: H04N1/4053

    摘要: The present invention discloses a digital halftoning method. The method comprises steps of: (a1) dividing an original image into non-overlapping blocks; (a2) obtaining a Least-Mean-Square trained (LMS-trained) filter by comparing at least a training image and a halftone result corresponding to the training image (a3) optimizing a class matrix with the LMS-trained filter, which involves the diffused area and the diffused weightings; and (a4) processing the non-overlapping blocks by performing a dot diffusion procedure with the optimized class matrix and the diffused weightings to generate a halftone image corresponding to the original image. A detailed class matrix optimizing method as in the above-mentioned step (a3) is also disclosed.

    摘要翻译: 本发明公开了一种数字半色调方法。 该方法包括以下步骤:(a1)将原始图像划分成非重叠块; (a2)通过将至少训练图像和对应于训练图像(a3)的半色调结果进行比较来获得最小均方训练(LMS训练)滤波器,该训练图像(a3)与LMS训练的滤波器优化类矩阵,其涉及 扩散面积和扩散重量; 和(a4)通过利用优化的类矩阵和扩散加权执行点扩散过程来生成与原始图像相对应的半色调图像来处理非重叠块。 还公开了如上述步骤(a3)中的详细的类矩阵优化方法。

    OBJECT DETECTION METHOD AND APPARATUS THEREOF
    12.
    发明申请
    OBJECT DETECTION METHOD AND APPARATUS THEREOF 失效
    对象检测方法及其设备

    公开(公告)号:US20100027842A1

    公开(公告)日:2010-02-04

    申请号:US12251418

    申请日:2008-10-14

    IPC分类号: G06K9/00

    摘要: An object detection method and an apparatus thereof are provided. In the object detection method, a plurality of images in an image sequence is sequentially received. When a current image is received, a latest background image is established by referring to the current image and the M images previous to the current image, so as to update one of N background images, wherein M and N are positive integers. Next, color models of the current image and the background images are analyzed to determine whether a pixel in the current image belongs to a foreground object. Accordingly, the accuracy in object detection is increased by instantly updating the background images.

    摘要翻译: 提供了一种物体检测方法及其装置。 在物体检测方法中,依次接收图像序列中的多个图像。 当接收到当前图像时,通过参考当前图像和当前图像之前的M个图像来建立最新的背景图像,以便更新N个背景图像之一,其中M和N是正整数。 接下来,分析当前图像和背景图像的颜色模型,以确定当前图像中的像素是否属于前景对象。 因此,通过立即更新背景图像来提高对象检测的准确性。

    Mutual optimization system for class matrix and diffusion weighting used in halftone image processing technique
    13.
    发明授权
    Mutual optimization system for class matrix and diffusion weighting used in halftone image processing technique 有权
    用于半色调图像处理技术的类矩阵和扩散权重的相互优化系统

    公开(公告)号:US08649059B2

    公开(公告)日:2014-02-11

    申请号:US13095835

    申请日:2011-04-27

    IPC分类号: H04N1/405

    CPC分类号: H04N1/4052

    摘要: A mutual optimization method for class matrix and diffusion weighting used in a halftone image processing technique and a mutual optimization system thereof are provided. In the method, a mutual optimization of a plurality of diffusion weightings and a class matrix used in a dot diffusion process is performed based on a concept of simulated annealing in order to avoid converging to local solution, so as to ensure an image quality of a halftone image generated by the dot diffusion process. Besides, since the mutual optimization method is for a hexagonal class matrix, a block effect appearing in the halftone image can be significantly reduced.

    摘要翻译: 提供了一种在半色调图像处理技术中使用的类矩阵和扩散加权的相互优化方法及其相互优化系统。 在该方法中,基于模拟退火的概念,进行多个扩散加权和用于点扩散处理的类矩阵的相互优化,以避免会聚到局部解,从而确保图像质量 通过点扩散处理生成的半色调图像。 此外,由于相互优化方法是用于六边形类矩阵,所以可以显着地减少出现在半色调图像中的块效应。

    Digital halftoning method and method for constructing class tiling map
    14.
    发明授权
    Digital halftoning method and method for constructing class tiling map 失效
    数字半色调方法及其构造方法

    公开(公告)号:US08570602B2

    公开(公告)日:2013-10-29

    申请号:US13153386

    申请日:2011-06-03

    IPC分类号: H04N1/40 G06K15/00

    CPC分类号: H04N1/4051

    摘要: A digital halftoning method and a method for constructing a class tiling map are disclosed. The present invention utilizes to arrange class matrixes in a staggering form such that adjacent class matrixes exist a staggering shift. Also, the class tiling map is constructed in this way. Then, a dot diffusion procedure is performed to an original image with the class tiling map so as to generate a halftone image corresponding to the original image. The present invention is capable of solving the problem of a periodic appearance caused by traditional dot diffusion.

    摘要翻译: 公开了一种数字半色调方法和一种构建类别贴图的方法。 本发明利用以令人惊叹的形式布置类矩阵,使得相邻类矩阵存在交错的移位。 此外,类拼贴地图以这种方式构建。 然后,利用类别平铺图对原始图像执行点扩散处理,以便产生对应于原始图像的半色调图像。 本发明能够解决由传统点扩散引起的周期性外观的问题。

    DIGITAL HALFTONING METHOD AND METHOD FOR CONSTRUCTING CLASS TILING MAP
    15.
    发明申请
    DIGITAL HALFTONING METHOD AND METHOD FOR CONSTRUCTING CLASS TILING MAP 失效
    用于构建类倾斜地图的数字化方法和方法

    公开(公告)号:US20120176650A1

    公开(公告)日:2012-07-12

    申请号:US13153386

    申请日:2011-06-03

    IPC分类号: H04N1/405

    CPC分类号: H04N1/4051

    摘要: A digital halftoning method and a method for constructing a class tiling map are disclosed. The present invention utilizes to arrange class matrixes in a staggering form such that adjacent class matrixes exist a staggering shift. Also, the class tiling map is constructed in this way. Then, a dot diffusion procedure is performed to an original image with the class tiling map so as to generate a halftone image corresponding to the original image. The present invention is capable of solving the problem of a periodic appearance caused by traditional dot diffusion.

    摘要翻译: 公开了一种数字半色调方法和一种构建类别贴图的方法。 本发明利用以令人惊叹的形式布置类矩阵,使得相邻类矩阵存在交错的移位。 此外,类拼贴地图以这种方式构建。 然后,利用类别平铺图对原始图像执行点扩散处理,以便产生对应于原始图像的半色调图像。 本发明能够解决由传统点扩散引起的周期性外观的问题。

    IMAGE DATA PROCESSIG SYSTEMS FOR HIDING SECRET INFORMATION AND DATA HIDING METHODS USING THE SAME
    16.
    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。

    Method of halftone watermarking for hiding multi-tone watermark or two-tone watermark
    17.
    发明申请
    Method of halftone watermarking for hiding multi-tone watermark or two-tone watermark 有权
    用于隐藏多音调水印或双音频水印的半色调水印方法

    公开(公告)号:US20100067057A1

    公开(公告)日:2010-03-18

    申请号:US12283902

    申请日:2008-09-15

    IPC分类号: H04N1/405

    CPC分类号: G06T1/0028 G06T2201/0051

    摘要: A method is performed to hide a watermark in two halftone images or in a single halftone image. The halftone image contains information of the hidden watermark, and each pixel value of the halftone image is associated with a corresponding offset value. The offset value is determined according to a corresponding pixel value of the watermark and a corresponding pixel value of another halftone image. The offset value is used to compensate a corresponding input value and a corresponding original error value of the halftone image.

    摘要翻译: 执行一种在两个半色调图像中或在单个半色调图像中隐藏水印的方法。 半色调图像包含隐藏水印的信息,并且半色调图像的每个像素值与相应的偏移值相关联。 根据水印的相应像素值和另一半色调图像的对应像素值来确定偏移值。 偏移值用于补偿半色调图像的相应输入值和相应的原始误差值。

    Image processing method combining compression and watermark techniques
    18.
    发明授权
    Image processing method combining compression and watermark techniques 失效
    组合压缩和水印技术的图像处理方法

    公开(公告)号:US08395822B2

    公开(公告)日:2013-03-12

    申请号:US12640018

    申请日:2009-12-17

    摘要: An image processing method combining compression and watermark techniques is provided. In the method, a block is taken as a unit, and two ordered dither arrays mutually conjugate are used to code an original image, so as to insert information of a watermark into the original image during the coding process. Accordingly, the method generates a compressed image gives consideration to the compression ratio, the image quality and the data safety. On the other hand, the method also provides a procedure to extract the watermark from the compressed image, in order to verify whether the compressed image has been modified illegally.

    摘要翻译: 提供了一种组合压缩和水印技术的图像处理方法。 在该方法中,将块作为单位,并且使用两个相互共轭的有序抖动数组来编码原始图像,以便在编码处理期间将水印的信息插入到原始图像中。 因此,该方法生成压缩图像,考虑压缩率,图像质量和数据安全性。 另一方面,该方法还提供从压缩图像中提取水印的过程,以便验证压缩图像是否被非法修改。

    Image data processing systems for hiding secret information and data hiding methods using the same
    19.
    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。

    Blind wavelet-based watermarking method
    20.
    发明授权
    Blind wavelet-based watermarking method 失效
    基于小波的盲水印方法

    公开(公告)号:US08300878B2

    公开(公告)日:2012-10-30

    申请号:US12206900

    申请日:2008-09-09

    摘要: A blind wavelet-based watermarking method is provided to extract one or more embedded watermarks form one or more high subbands of a watermarked image generated by 1-level or 2 level wavelet transform. One or more least-mean-square (LMS) filters are trained to predict the data sets in the high subbands of an original image by converting a low subband of the watermarked image. Therefore, the one or more embedded watermarks could be extracted by comparing the predicted data sets in the high subbands with data sets in corresponding subbands of the watermarked image.

    摘要翻译: 提供一种基于盲小波的水印方法,从1级或2级小波变换产生的水印图像的一个或多个高子带中提取一个或多个嵌入水印。 训练一个或多个最小均方(LMS)滤波器,以通过转换水印图像的低子带来预测原始图像的高子带中的数据集。 因此,可以通过将高子带中的预测数据集与水印图像的相应子带中的数据集进行比较来提取一个或多个嵌入水印。