公开(公告)号：US5339170A

公开(公告)日：1994-08-16

申请号：US815219

申请日：1991-12-31

申请人： Zhigang Fan

发明人： Zhigang Fan

IPC分类号： G06T5/00 ,  H04N1/40

CPC分类号： H04N1/40075

摘要： An image processing system converts screen structured halftone images to continuous tone images. Value data is sequentially generated for successive pixels of a halftone image. An averaging filter is provided for sequentially filtering each pixel in the halftone image in the horizontal image direction in accordance with a first predetermined filter to generate an intermediately filtered image. A pattern matching filter then sequentially filters each pixel in the intermediately filtered image in the vertical direction to generate a hybrid filtered image. The hybrid filter arrangement is then iteratively operated for three additional sets of orthogonal directions, i.e. the vertical and horizontal directions, a first diagonal direction and a second diagonal direction, and the second and first diagonal directions. The best hybrid image is generated as an output continuous tone image for storage and/or processing to a halftone copy or print.

摘要翻译： 图像处理系统将屏幕结构的半色调图像转换为连续色调图像。 为半色调图像的连续像素顺序产生数值数据。 提供平均滤波器，用于根据第一预定滤波器顺序地对水印图像中的半色调图像中的每个像素进行滤波，以产生中间滤波的图像。 然后，模式匹配滤波器顺序地过滤垂直方向上的中间滤波图像中的每个像素，以产生混合滤波图像。 然后，对于三个附加的正交方向集合，即垂直和水平方向，第一对角线方向和第二对角线方向，以及第二和第一对角线方向，迭代地操作混合滤波器装置。 生成最佳的混合图像作为用于存储和/或处理到半色调拷贝或打印的输出连续色调图像。

公开(公告)号：US09900519B2

公开(公告)日：2018-02-20

申请号：US15081281

申请日：2016-03-25

申请人： Zhigang Fan

发明人： Zhigang Fan

IPC分类号： H04N5/225 ,  H04N5/238 ,  G06K9/46 ,  H04N5/235 ,  G06K9/62 ,  H04N5/232 ,  G02B7/28

CPC分类号： H04N5/2352 ,  G02B7/285 ,  G06K9/4661 ,  G06K9/6267 ,  H04N5/23212

摘要： A method, a device and a computer readable for automatically identifying a Christmas tree scene and setting a camera's focus and/or exposure parameters in a way that yields images with high image quality. The Christmas tree scene identification can be performed by segmenting the image into bright and dark regions, identifying the light objects, collecting the statistics of the light objects, and classifying the scene based on the statistics of the light objects, or by collecting the pixel value statistics for the image, and classifying the scene based on the statistics of the pixel values, or by collecting the pixel value statistics for the image, filtering the image, collecting the pixel value statistics for the filtered image, and classifying the scene by comparing the statistics of the pixel values before and after filtering. The focus and exposure settings can be adjusted based on the Christmas tree scene identification results. For Christmas tree scenes, the exposure can be set based on a value that is adjusted upwards from the mean luminance of the image, or on a value that is calculated from the top luminance value. The focus can be set by identifying the lights in the image, and minimizing the light size in the image.

公开(公告)号：USD783118S1

公开(公告)日：2017-04-04

申请号：US29544438

申请日：2015-11-03

申请人： Zhigang Fan

设计人： Zhigang Fan

公开(公告)号：US09100576B2

公开(公告)日：2015-08-04

申请号：US13459790

申请日：2012-04-30

申请人： Zhigang Fan ,  Yonghui Zhao ,  Shen-ge Wang ,  Hengzhou Ding

发明人： Zhigang Fan ,  Yonghui Zhao ,  Shen-ge Wang ,  Hengzhou Ding

IPC分类号： G06F17/00 ,  H04N5/232 ,  G06K7/14 ,  G06K9/32 ,  G06K9/62

CPC分类号： H04N5/23293 ,  G06K7/1452 ,  G06K9/3241 ,  G06K9/6204 ,  H04N5/23222

摘要： A method and device for receiving an image of a symbology captured by an imaging device, displaying an image of the symbology, displaying a boundary indicator around the symbology, adjusting the image size to correspond with the boundary indicator, decoding the symbology, and initiating an action by device.

摘要翻译： 一种用于接收由成像装置捕获的符号系统的图像的方法和装置，显示符号系统的图像，在符号系统周围显示边界指示符，调整图像大小以对应于边界指示符，解码符号系统，以及启动 按设备动作

公开(公告)号：US09042640B2

公开(公告)日：2015-05-26

申请号：US13349751

申请日：2012-01-13

申请人： Raja Bala ,  Zhigang Fan ,  Hengzhou Ding ,  Jan P. Allebach ,  Charles A. Bouman ,  Reuven J. Sherwin

发明人： Raja Bala ,  Zhigang Fan ,  Hengzhou Ding ,  Jan P. Allebach ,  Charles A. Bouman ,  Reuven J. Sherwin

IPC分类号： G06K9/62 ,  G06K9/00 ,  G06K9/32

CPC分类号： G06K9/00671 ,  G06K9/3258

摘要： As set forth herein, a computer-implemented method facilitates pre-analyzing an image and automatically suggesting to the user the most suitable regions within an image for text-based personalization. Image regions that are spatially smooth and regions with existing text (e.g. signage, banners, etc.) are primary candidates for personalization. This gives rise to two sets of corresponding algorithms: one for identifying smooth areas, and one for locating text regions. Smooth regions are found by dividing the image into blocks and applying an iterative combining strategy, and those regions satisfying certain spatial properties (e.g. size, position, shape of the boundary) are retained as promising candidates. In one embodiment, connected component analysis is performed on the image for locating text regions. Finally, based on the smooth and text regions found in the image, several alternative approaches are described herein to derive an overall metric for “suitability for personalization.”

摘要翻译： 如本文所述，计算机实现的方法有助于预分析图像并且自动地向用户建议图像内的最合适的区域用于基于文本的个性化。 具有空间平滑的图像区域和具有现有文本的区域（例如标牌，横幅等）是用于个性化的主要候选者。 这产生了两组相应的算法：一种用于识别平滑区域，一种用于定位文本区域。 通过将图像划分成块并应用迭代组合策略来找到平滑区域，并且满足某些空间属性（例如，边界的大小，位置，形状）的那些区域被保留为有希望的候选者。 在一个实施例中，对用于定位文本区域的图像执行连接分量分析。 最后，基于图像中发现的平滑和文本区域，本文描述了几种替代方法，以得出“适合个性化”的总体度量。

公开(公告)号：US09020200B2

公开(公告)日：2015-04-28

申请号：US13494302

申请日：2012-06-12

申请人： Zhigang Fan ,  Yonghui Zhao ,  Shen-ge Wang

发明人： Zhigang Fan ,  Yonghui Zhao ,  Shen-ge Wang

IPC分类号： G06T5/00 ,  G06K9/32

CPC分类号： G06K9/3258 ,  G06K9/3275 ,  G06T5/006

摘要： A method for adjusting a license plate that is detected in a captured image includes automatically determining at least one set of correction parameters corresponding to a slant-oriented license plate. The method further includes receiving an input image representing a detected license plate. In response to receiving the input image, the method includes automatically adjusting the input image to obtain a corrected image using the at least one set of correction parameters.

摘要翻译： 用于调整在拍摄图像中检测到的车牌的方法包括自动地确定与倾向于车牌的牌照对应的至少一组校正参数。 该方法还包括接收表示检测到的车牌的输入图像。 响应于接收到输入图像，该方法包括使用至少一组校正参数来自动调整输入图像以获得校正图像。

公开(公告)号：US09014432B2

公开(公告)日：2015-04-21

申请号：US13464357

申请日：2012-05-04

申请人： Zhigang Fan ,  Yonghui Zhao ,  Aaron Michael Burry ,  Vladimir Kozitsky

发明人： Zhigang Fan ,  Yonghui Zhao ,  Aaron Michael Burry ,  Vladimir Kozitsky

IPC分类号： G06K9/00 ,  G06K9/32

CPC分类号： G06K9/3258 ,  G06K2209/15

摘要： A method determines a license plate layout configuration. The method includes generating at least one model representing a license plate layout configuration. The generating includes segmenting training images each defining a license plate to extract characters and logos from the training images. The segmenting includes calculating values corresponding to parameters of the license plate and features of the characters and logos. The segmenting includes estimating a likelihood function specified by the features using the values. The likelihood function measures deviations between an observed plate and the model. The method includes storing a layout structure and the distributions for each of the at least one model. The method includes receiving as input an observed image including a plate region. The method includes segmenting the plate region and determining a license plate layout configuration of the observed plate by comparing the segmented plate region to the at least one model.

摘要翻译： 一种方法确定车牌布局配置。 该方法包括生成表示车牌布局配置的至少一个模型。 生成包括分割训练图像，每个训练图像定义牌照以从训练图像中提取字符和徽标。 分段包括计算与车牌参数对应的值和字符和标志的特征。 分段包括使用这些值估计由特征指定的似然函数。 似然函数测量观察板和模型之间的偏差。 所述方法包括存储所述至少一个模型中的每一个的布局结构和分布。 该方法包括接收包括板区域的观察图像作为输入。 该方法包括通过将分割板区域与至少一个模型进行比较来分割板区域并确定观察板块的牌照布局配置。

公开(公告)号：US08812978B2

公开(公告)日：2014-08-19

申请号：US11315993

申请日：2005-12-22

申请人： Reiner Eschbach ,  Emil V. Rainero ,  Zhigang Fan ,  Shen-ge Wang

发明人： Reiner Eschbach ,  Emil V. Rainero ,  Zhigang Fan ,  Shen-ge Wang

IPC分类号： G06F3/048 ,  G06F17/21

CPC分类号： G06F17/211

摘要： A system and method for dynamic zoom adjustment based, in part, upon: the raster data in the user selected local area is disclosed; and/or the knowledge of a prevailing font size in a user selected region such that the text in that region is enlarged to be just readable. To achieve this, the detail in the local area is examined and a zoom factor is calculated that depends on the image detail and/or the viewing screen resolution. A document server may be employed to develop the information needed to enable this functionality. In one embodiment, the information is developed by RIPping the document, and then storing a spatial map of localized details (e.g., font sizes at several display resolutions) to automatically adjust a zoom level or factor and thereby facilitate navigation and reading.

摘要翻译： 一种用于动态变焦调整的系统和方法，部分地基于：用户选择的局部区域中的光栅数据; 和/或在用户选择的区域中的主要字体大小的知识，使得该区域中的文本被放大为仅仅是可读的。 为了实现这一点，检查局部区域中的细节，并且计算取决于图像细节和/或观看屏幕分辨率的缩放因子。 可以使用文档服务器来开发实​​现该功能所需的信息。 在一个实施例中，通过RIP文档来开发信息，然后存储本地化细节（例如，几种显示分辨率的字体大小）的空间图，以自动调整缩放级别或因子，从而便于导航和阅读。

公开(公告)号：US08774450B2

公开(公告)日：2014-07-08

申请号：US13093130

申请日：2011-04-25

申请人： Zhigang Fan ,  Shen-Ge Wang

发明人： Zhigang Fan ,  Shen-Ge Wang

IPC分类号： G06K9/48

CPC分类号： G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0062

摘要： Described herein is a level I (overt) feature for security printing intended to deter unauthorized modification of text documents. The exemplary method includes generating a textured background that follows the contour of the text it surrounds and is difficult to modify. The background patterns may be generated with a two-step procedure that first creates a smooth function and then modulates it to produce patterns with sharp contrast. Tampering will be deterred as visible artifacts will be created when text is altered. Compared to the levels II and III features, the exemplary method relies on human vision for detection and does not require any special tools and instruments. It can be used in applications where fast, simple and inexpensive inspection is essential, or combined with other technologies for enhancing overall effectiveness.

摘要翻译： 这里描述的是用于防止非法修改文本文档的安全打印的I级（公开）特征。 示例性方法包括生成跟随其围绕的文本轮廓的纹理背景，并且难以修改。 背景图案可以通过两步过程产生，其首先创建平滑功能，然后调制它以产生具有鲜明对比度的图案。 篡改将被阻止，因为当文字被改变时会产生可见的文物。 与II和III级特征相比，该示例性方法依赖于人类视觉进行检测，并且不需要任何特殊的工具和仪器。 它可用于快速，简单和廉价检查至关重要的应用，或与其他技术相结合，以提高整体效能。

公开(公告)号：US08754909B2

公开(公告)日：2014-06-17

申请号：US12339148

申请日：2008-12-19

申请人： Zhigang Fan ,  Paul Roberts Conlon

发明人： Zhigang Fan ,  Paul Roberts Conlon

IPC分类号： G06K15/02 ,  G06F3/0485

CPC分类号： G09G5/36 ,  G06F3/14 ,  G06T11/60 ,  G09G2340/0407 ,  G09G2340/0492 ,  H04N1/387 ,  H04N1/3877

摘要： A method and system render rasterized data by receiving non-rasterized page description language data and a corresponding transformation matrix representing transformation operations to be performed. The non-rasterized page description language data is rasterizing to create rasterized data. The corresponding transformation matrix is decomposed into a plurality of individual transformation operation matrices and a discrete transformation operation value, from a corresponding individual transformation operation matrix, is generated for each transformation operation to be performed upon the rasterized data. The transformation operations are performed upon the rasterized data based upon the generated discrete transformation operation values.

摘要翻译： 方法和系统通过接收非光栅化页面描述语言数据和表示要执行的变换操作的相应变换矩阵来渲染光栅化数据。 非光栅化页面描述语言数据正在光栅化以创建光栅化数据。 相应的变换矩阵被分解成多个单独的变换运算矩阵，并且对于对光栅化数据执行的每个变换操作生成来自相应的单独变换运算矩阵的离散变换运算值。 基于所生成的离散变换操作值，对光栅化数据执行变换操作。