公开(公告)号：US08355571B2

公开(公告)日：2013-01-15

申请号：US13015194

申请日：2011-01-27

申请人： Sang-Wook Oh ,  Sang-Hoon Sull ,  Hoon-Jae Lee ,  Soon-Hong Jung ,  Jun-Sic Youn

发明人： Sang-Wook Oh ,  Sang-Hoon Sull ,  Hoon-Jae Lee ,  Soon-Hong Jung ,  Jun-Sic Youn

IPC分类号： G06K9/00 ,  G06K9/46 ,  G06K9/34

CPC分类号： G06K9/3258 ,  G06K9/38 ,  G06K2209/01

摘要： Provided is an apparatus and method for generating an image for character region extraction. Upon input of an original image, a candidate character image is generated from the original image and a plurality of binarization maps for similar colors are generated from the generated candidate character image. A binarization map including a background region is selected from among the plurality of generated binarization maps, and the background region of the selected binarization map is expanded. The expanded background region is inverted to generate an image including a character region, thereby generating an image for accurately extracting the character region without missing a boundary portion of a character.

摘要翻译： 提供了一种用于生成用于字符区域提取的图像的装置和方法。 在输入原始图像时，从原始图像生成候选字符图像，并且从生成的候选字符图像生成用于类似颜色的多个二值化图。 从多个生成的二值化图中选择包括背景区域的二值化图，并且扩大所选择的二值化图的背景区域。 扩展背景区域被反转以产生包括字符区域的图像，从而生成用于精确地提取字符区域而不丢失字符的边界部分的图像。

公开(公告)号：US20110200257A1

公开(公告)日：2011-08-18

申请号：US13029845

申请日：2011-02-17

申请人： Sang-Wook Oh ,  Sang-Hoon Sull ,  Myung-Hoon Kim ,  Hoon-Jae Lee ,  Soon-Hong Jung ,  Jun-Sic Youn

发明人： Sang-Wook Oh ,  Sang-Hoon Sull ,  Myung-Hoon Kim ,  Hoon-Jae Lee ,  Soon-Hong Jung ,  Jun-Sic Youn

IPC分类号： G06K9/46

CPC分类号： G06K9/325 ,  G06K2209/01

摘要： A character region extracting apparatus and method which extract a character region through the calculation of character stroke widths are provided. The method includes producing a binary image including a candidate character region from an original image; extracting a character outline from the candidate character region; acquires character outline information for the extracted outline; setting a representative character stroke width and a representative character angle in each of the pixels forming the outline, based on the character outline information; and determining a character existing region in the candidate character region by confirming the ratio of effective representative stroke widths and effective angles as compared to the entire length of the outline. Accordingly, it is possible to efficiently determine whether one or more characters exist in the candidate character region.

摘要翻译： 提供了一种通过字符笔划宽度的计算提取字符区域的字符区域提取装置和方法。 该方法包括从原始图像生成包括候选字符区域的二进制图像; 从候选字符区域提取字符轮廓; 获取提取的轮廓的字符轮廓信息; 基于所述字符轮廓信息，在形成轮廓的每个像素中设置代表性的字符行程宽度和代表性角色; 以及通过确认与轮廓的整个长度相比有效的代表性行程宽度和有效角度的比率来确定候选字符区域中的字符存在区域。 因此，可以有效地确定候选字符区域中是否存在一个或多个字符。

公开(公告)号：US08744189B2

公开(公告)日：2014-06-03

申请号：US13029845

申请日：2011-02-17

申请人： Sang-Wook Oh ,  Sang-Hoon Sull ,  Myung-Hoon Kim ,  Hoon-Jae Lee ,  Soon-Hong Jung ,  Jun-Sic Youn

发明人： Sang-Wook Oh ,  Sang-Hoon Sull ,  Myung-Hoon Kim ,  Hoon-Jae Lee ,  Soon-Hong Jung ,  Jun-Sic Youn

IPC分类号： G06K9/00

CPC分类号： G06K9/325 ,  G06K2209/01

摘要： A character region extracting apparatus and method which extract a character region through the calculation of character stroke widths are provided. The method includes producing a binary image including a candidate character region from an original image; extracting a character outline from the candidate character region; acquires character outline information for the extracted outline; setting a representative character stroke width and a representative character angle in each of the pixels forming the outline, based on the character outline information; and determining a character existing region in the candidate character region by confirming the ratio of effective representative stroke widths and effective angles as compared to the entire length of the outline. Accordingly, it is possible to efficiently determine whether one or more characters exist in the candidate character region.

摘要翻译： 提供了一种通过字符笔划宽度的计算提取字符区域的字符区域提取装置和方法。 该方法包括从原始图像生成包括候选字符区域的二进制图像; 从候选字符区域提取字符轮廓; 获取提取的轮廓的字符轮廓信息; 基于所述字符轮廓信息，在形成轮廓的每个像素中设置代表性的字符行程宽度和代表性角色; 以及通过确认与轮廓的整个长度相比有效的代表性行程宽度和有效角度的比率来确定候选字符区域中的字符存在区域。 因此，可以有效地确定候选字符区域中是否存在一个或多个字符。

公开(公告)号：US20110200250A1

公开(公告)日：2011-08-18

申请号：US13015194

申请日：2011-01-27

申请人： Sang-Wook OH ,  Sang-Hoon Sull ,  Hoon-Jae Lee ,  Soon-Hoog Jung ,  Jun-Sic Youn

发明人： Sang-Wook OH ,  Sang-Hoon Sull ,  Hoon-Jae Lee ,  Soon-Hoog Jung ,  Jun-Sic Youn

IPC分类号： G06K9/34

CPC分类号： G06K9/3258 ,  G06K9/38 ,  G06K2209/01

摘要： Provided is an apparatus and method for generating an image for character region extraction. Upon input of an original image, a candidate character image is generated from the original image and a plurality of binarization maps for similar colors are generated from the generated candidate character image. A binarization map including a background region is selected from among the plurality of generated binarization maps, and the background region of the selected binarization map is expanded. The expanded background region is inverted to generate an image including a character region, thereby generating an image for accurately extracting the character region without missing a boundary portion of a character.

摘要翻译： 提供了一种用于生成用于字符区域提取的图像的装置和方法。 在输入原始图像时，从原始图像生成候选字符图像，并且从生成的候选字符图像生成用于类似颜色的多个二值化图。 从多个生成的二值化图中选择包括背景区域的二值化图，并且扩大所选择的二值化图的背景区域。 扩展背景区域被反转以产生包括字符区域的图像，从而生成用于精确地提取字符区域而不丢失字符的边界部分的图像。

公开(公告)号：US07046803B2

公开(公告)日：2006-05-16

申请号：US10114088

申请日：2002-04-02

申请人： Hoon-Jae Lee ,  Sang-Jae Moon ,  Sang-Jun Park

发明人： Hoon-Jae Lee ,  Sang-Jae Moon ,  Sang-Jun Park

IPC分类号： H04L9/00 ,  G06F1/02

CPC分类号： H04L9/0662 ,  H04L2209/125

摘要： A random keystream generation apparatus and method for use in an encryption system, generates an m-bit random keystream, using a PS-LFSR with n storage stages for storing n-bit binary data is divided into k sub-storages connected in series, each sub-storage having parallel storage stages (k is a minimum integer larger than the quotient of n divided by m). Each sub-storage stores in the parallel storage stages m-bit parallel binary data received from the previous sub-storage and outputs the m-bit parallel binary data simultaneously in accordance with a system clock signal. A buffer has m storage stages to store m-bit parallel data received from the last sub-storage of the PS-LFSR. M feedback connections receive the outputs of the sub-storages and the buffer corresponding to predetermined primitive polynomials, calculate the primitive polynomials with the received data, and output the calculation results as the bits of the m-bit keystream sequence.