公开(公告)号：US08116525B2

公开(公告)日：2012-02-14

申请号：US12251418

申请日：2008-10-14

申请人： Jing-Ming Guo ,  Yang-Chen Tian

发明人： Jing-Ming Guo ,  Yang-Chen Tian

IPC分类号： G06K9/00 ,  H04N7/18

CPC分类号： G06K9/38 ,  G06K9/00624 ,  G06T7/11 ,  G06T7/136 ,  G06T7/194

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。

公开(公告)号：US08077355B2

公开(公告)日：2011-12-13

申请号：US12187546

申请日：2008-08-07

申请人： Jing-ming Guo ,  Yun-fu Liu

发明人： Jing-ming Guo ,  Yun-fu Liu

IPC分类号： G06K15/00

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。

公开(公告)号：US08049930B2

公开(公告)日：2011-11-01

申请号：US12283902

申请日：2008-09-15

申请人： Jing-Ming Guo ,  Yun-Fu Liu

发明人： Jing-Ming Guo ,  Yun-Fu Liu

IPC分类号： G06K15/00

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。

公开(公告)号：US20110058188A1

公开(公告)日：2011-03-10

申请号：US12640018

申请日：2009-12-17

申请人： Jing-Ming Guo ,  Ming-Feng Wu

发明人： Jing-Ming Guo ,  Ming-Feng Wu

IPC分类号： H04N1/60

CPC分类号： H04N1/32256 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0061 ,  H04N1/32208 ,  H04N1/32224 ,  H04N1/32277

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。

公开(公告)号：US20080246999A1

公开(公告)日：2008-10-09

申请号：US11836400

申请日：2007-08-09

申请人： Jing-Ming Guo

发明人： Jing-Ming Guo

IPC分类号： G06K15/00 ,  G06K9/00 ,  G06K9/36

CPC分类号： H04N1/4052

摘要： An ink saving and tone correction printing technique using error diffusion (EDF) includes receiving a first pixel value vi,j and comparing the first pixel value vi,j with a threshold value to produce a second pixel value bi,j and a reference value pi,j. When the first pixel value vi,j is less than a threshold value, not outputting the second pixel value bi,j and the reference value pi,j is the area of actual non-blank region within a pixel region. When the first pixel value vi,j is greater than the threshold value, outputting the second pixel value bi,j for printing on the pixel region, and the reference value pi,j is the area of actually increased non-blank region within the pixel region and the adjacent pixel regions in which a processing prior to printing has been conducted to decide whether or not to print.

摘要翻译： 使用误差扩散（EDF）的墨水保存和色调校正打印技术包括接收第一像素值v i，j，并将第一像素值v i，j， 阈值以产生第二像素值b i，j和参考值p i，j。 当第一像素值v i，j i小于阈值时，不输出第二像素值b i，j i和参考值p i i， j 是像素区域内的实际非空白区域的面积。 当第一像素值v i，j i大于阈值时，输出用于在像素区域上打印的第二像素值b i，j，以及参考值 p i，j i是在像素区域和相邻像素区域之间实际增加的非空白区域的面积，其中进行了打印之前的处理以决定是否打印。

公开(公告)号：US08390890B2

公开(公告)日：2013-03-05

申请号：US12899245

申请日：2010-10-06

申请人： Jing-Ming Guo ,  Yun-Fu Liu

发明人： Jing-Ming Guo ,  Yun-Fu Liu

IPC分类号： H04N1/405 ,  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。

公开(公告)号：US08363889B2

公开(公告)日：2013-01-29

申请号：US12820512

申请日：2010-06-22

申请人： Jing-Ming Guo ,  Jia-Jin Tsai

发明人： Jing-Ming Guo ,  Jia-Jin Tsai

IPC分类号： G06K9/00

CPC分类号： H04N1/32251 ,  G06T1/0021 ,  H04N1/32235 ,  H04N1/32309

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。

公开(公告)号：US20110142340A1

公开(公告)日：2011-06-16

申请号：US12899245

申请日：2010-10-06

申请人： Jing-Ming GUO ,  Yun-Fu LIU

发明人： Jing-Ming GUO ,  Yun-Fu LIU

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。

公开(公告)号：US20110051995A1

公开(公告)日：2011-03-03

申请号：US12849804

申请日：2010-08-03

申请人： Jing-Ming Guo ,  Jia-Jin Tsai

发明人： Jing-Ming Guo ,  Jia-Jin Tsai

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。

公开(公告)号：US20100067812A1

公开(公告)日：2010-03-18

申请号：US12261059

申请日：2008-10-30

申请人： Jing-Ming Guo ,  Min-Feng Wu

发明人： Jing-Ming Guo ,  Min-Feng Wu

IPC分类号： G06K9/00

CPC分类号： H04N19/90

摘要： An image compression method is provided. First, an image including a plurality of blocks is received and each block includes a plurality of pixels. Next, an order dithering array within a preset range is generated, which includes a plurality of elements. Then, values of the elements in the order dithering array are respectively mapped to a plurality of mapping values according to a gray scale range of each block. In each block, each pixel value is quantized to a first digital value or a second digital value according to a result of comparing each pixel value with the corresponding mapping value. Hence, a bit rate of the image is efficiently compressed, and features of the original image are preserved inside the compressed image.

摘要翻译： 提供了图像压缩方法。 首先，接收包括多个块的图像，并且每个块包括多个像素。 接下来，生成预设范围内的顺序抖动阵列，其包括多个元素。 然后，根据每个块的灰度范围，将顺序抖动阵列中的元素的值分别映射到多个映射值。 在每个块中，根据将每个像素值与对应的映射值进行比较的结果，将每个像素值量化为第一数字值或第二数字值。 因此，图像的比特率被有效地压缩，原始图像的特征被保留在压缩图像内。