公开(公告)号：US08554012B2

公开(公告)日：2013-10-08

申请号：US12551407

申请日：2009-08-31

申请人： Jiyun Du ,  Satoshi Miyamoto ,  Nobuhisa Yamazaki

发明人： Jiyun Du ,  Satoshi Miyamoto ,  Nobuhisa Yamazaki

IPC分类号： G06K9/40 ,  G06K9/00

CPC分类号： G06K9/32 ,  G06T5/006 ,  G06T7/12 ,  G06T2207/10008 ,  G06T2207/30176 ,  H04N1/387

摘要： An image processing apparatus including an image photographing unit, and a control unit, wherein the control unit includes a document image acquiring unit that acquires a document image including at least an image of a document, a contour extracting unit that extracts a contour of the document from the document image, the extracting the contour being performed based on luminance, a distortion position detecting unit that detects a contour straight line located at a location where a distance between the contour and a center point of a rectangle having the minimum area surrounding the contour is shortest, the contour straight line being detected as a distortion position in the document, the contour straight line being located on the contour, and a corrected image generating unit that performs a geometric correction on the document image to extend the contour to a correction reference line determined from the distortion position, and generates a corrected image having the distortion in the document image corrected.

摘要翻译： 一种包括图像拍摄单元和控制单元的图像处理设备，其中所述控制单元包括文档图像获取单元，其获取至少包括文档图像的文档图像，提取所述文档的轮廓的轮廓提取单元 从文档图像中提取基于亮度执行的轮廓;变形位置检测单元，其检测轮廓直线，位于轮廓与具有围绕轮廓的最小面积的矩形的中心点之间的距离的位置 轮廓直线被检测为文档中的失真位置，轮廓直线位于轮廓上，校正图像生成单元对文档图像执行几何校正以将轮廓延伸到校正基准 从失真位置确定线，并产生具有th失真的校正图像 e文档图像更正。

公开(公告)号：US20100135595A1

公开(公告)日：2010-06-03

申请号：US12551407

申请日：2009-08-31

申请人： Jiyun Du ,  Satoshi Miyamoto ,  Nobuhisa Yamazaki

发明人： Jiyun Du ,  Satoshi Miyamoto ,  Nobuhisa Yamazaki

IPC分类号： G06K9/40

CPC分类号： G06K9/32 ,  G06T5/006 ,  G06T7/12 ,  G06T2207/10008 ,  G06T2207/30176 ,  H04N1/387

摘要： An image processing apparatus including an image photographing unit, and a control unit, wherein the control unit includes a document image acquiring unit that acquires a document image including at least an image of a document, a contour extracting unit that extracts a contour of the document from the document image, the extracting the contour being performed based on luminance, a distortion position detecting unit that detects a contour straight line located at a location where a distance between the contour and a center point of a rectangle having the minimum area surrounding the contour is shortest, the contour straight line being detected as a distortion position in the document, the contour straight line being located on the contour, and a corrected image generating unit that performs a geometric correction on the document image to extend the contour to a correction reference line determined from the distortion position, and generates a corrected image having the distortion in the document image corrected.

摘要翻译： 一种包括图像拍摄单元和控制单元的图像处理设备，其中所述控制单元包括文档图像获取单元，其获取至少包括文档图像的文档图像，提取所述文档的轮廓的轮廓提取单元 从文档图像中提取基于亮度执行的轮廓;变形位置检测单元，其检测轮廓直线，位于轮廓与具有围绕轮廓的最小面积的矩形的中心点之间的距离的位置 轮廓直线被检测为文档中的失真位置，轮廓直线位于轮廓上，校正图像生成单元对文档图像执行几何校正以将轮廓延伸到校正基准 从失真位置确定线，并产生具有th失真的校正图像 e文档图像更正。

公开(公告)号：US07893973B2

公开(公告)日：2011-02-22

申请号：US12187228

申请日：2008-08-06

申请人： Jiyun Du ,  Satoshi Miyamoto ,  Nobuhisa Yamazaki

发明人： Jiyun Du ,  Satoshi Miyamoto ,  Nobuhisa Yamazaki

IPC分类号： H04N5/238 ,  H04N9/64 ,  G06K9/00

CPC分类号： H04N1/401 ,  G06T5/006 ,  G06T5/008 ,  G06T5/40 ,  G06T2207/20012 ,  G06T2207/20021 ,  G06T2207/30176 ,  H04N1/00307 ,  H04N1/4072 ,  H04N2201/0084 ,  H04N2201/0096

摘要： Document image data is converted into luminance image data. Block image data is generated from the luminance image data. Start point block pixel data and end point block pixel data are set based on a change rate of luminance values of adjacent block pixel data. A luminance value of block pixel data between the start point block pixel data and the end point block pixel data is corrected based on a start point luminance value and an end point luminance value. The luminance value, of the block pixel data wherein each luminance value of an adjacent block pixel data cluster is less than an average value, is substituted by the average value. The luminance value of each pixel data is set based on the luminance value of the block pixel data. Post process luminance image data that includes each pixel data is reconverted into the document image data.

摘要翻译： 文件图像数据被转换为亮度图像数据。 从亮度图像数据生成块图像数据。 基于相邻块像素数据的亮度值的变化率来设定起始点块像素数据和终点块像素数据。 基于开始点亮度值和终点亮度值来校正开始点块像素数据和结束点块像素数据之间的块像素数据的亮度值。 其中相邻块像素数据簇的每个亮度值小于平均值的块像素数据的亮度值被平均值代替。 基于块像素数据的亮度值设定每个像素数据的亮度值。 将包含每个像素数据的后处理亮度图像数据重新转换为文档图像数据。

公开(公告)号：US08818095B2

公开(公告)日：2014-08-26

申请号：US13543544

申请日：2012-07-06

申请人： Jiyun Du

发明人： Jiyun Du

IPC分类号： G06K9/38 ,  G06K9/46 ,  H04N1/403

CPC分类号： G06K9/46 ,  G06K9/38 ,  G06K2209/01 ,  G06T7/12 ,  G06T7/136 ,  G06T7/194 ,  G06T2207/30176 ,  H04N1/403

摘要： There are provided an image processing apparatus, image processing method and a computer-readable, non-transitory medium that can binarize the input image so that the characters can be differentiated with high accuracy from the background area. The image processing apparatus includes an edge pixel extractor for extracting edge pixels from an input image, a first histogram generator for generating a first histogram based on a luminance value of each of the edge pixels, a second histogram generator for generating a second histogram based on a minimum luminance value among the luminance values of pixels neighboring each of the edge pixels, a static threshold calculator for obtaining a static threshold based on the first histogram and the second histogram, and a binarization unit for binarizing the input image by using the static threshold.

摘要翻译： 提供了一种图像处理装置，图像处理方法和可以将输入图像二值化的计算机可读的非暂时介质，使得可以从背景区域以高精度区分字符。 图像处理装置包括用于从输入图像提取边缘像素的边缘像素提取器，用于基于每个边缘像素的亮度值生成第一直方图的第一直方图生成器，用于基于 在每个边缘像素附近的像素的亮度值中的最小亮度值，用于基于第一直方图和第二直方图获得静态阈值的静态阈值计算器，以及通过使用静态阈值来二值化输入图像的二值化单元 。

公开(公告)号：US20130044953A1

公开(公告)日：2013-02-21

申请号：US13543605

申请日：2012-07-06

申请人： Jiyun Du

发明人： Jiyun Du

IPC分类号： G06K9/62

CPC分类号： G06K9/3241 ,  G06K2209/01 ,  H04N1/403

摘要： There are provided an image processing apparatus, image processing method, and a computer-readable, non-transitory medium that can determine with high accuracy whether or not an input image contains a background element. The image processing apparatus includes a decimated image generator for generating a decimated image through pixel decimation from an input image, an edge pixel extractor for extracting edge pixels from the decimated image, an edge class extractor for extracting an isolated edge pixel from among the edge pixels, a histogram generator for generating an isolated histogram based on the isolated edge pixel, and a decision unit for making, based on the isolated histogram, a decision as to whether or not the input image contains a background element.

摘要翻译： 提供了可以高精度地确定输入图像是否包含背景元素的图像处理装置，图像处理方法和计算机可读的非暂时介质。 图像处理装置包括抽取图像生成器，用于通过来自输入图像的像素抽取生成抽取图像，边缘像素提取器，用于从抽取图像中提取边缘像素;边缘类别提取器，用于从边缘像素中提取孤立边缘像素 一个直方图生成器，用于基于分离的边缘像素产生孤立的直方图;以及判定单元，用于基于孤立的直方图，确定输入图像是否包含背景元素。

公开(公告)号：US08824796B2

公开(公告)日：2014-09-02

申请号：US13543605

申请日：2012-07-06

申请人： Jiyun Du

发明人： Jiyun Du

IPC分类号： G06K9/38 ,  H04N1/403 ,  G06K9/32

CPC分类号： G06K9/3241 ,  G06K2209/01 ,  H04N1/403

摘要： There are provided an image processing apparatus, image processing method, and a computer-readable, non-transitory medium that can determine with high accuracy whether or not an input image contains a background element. The image processing apparatus includes a decimated image generator for generating a decimated image through pixel decimation from an input image, an edge pixel extractor for extracting edge pixels from the decimated image, an edge class extractor for extracting an isolated edge pixel from among the edge pixels, a histogram generator for generating an isolated histogram based on the isolated edge pixel, and a decision unit for making, based on the isolated histogram, a decision as to whether or not the input image contains a background element.

摘要翻译： 提供了可以高精度地确定输入图像是否包含背景元素的图像处理装置，图像处理方法和计算机可读的非暂时介质。 图像处理装置包括抽取图像生成器，用于通过来自输入图像的像素抽取生成抽取图像;边缘像素提取器，用于从抽取图像中提取边缘像素;边缘类别提取器，用于从边缘像素中提取孤立边缘像素 一个直方图生成器，用于基于分离的边缘像素产生孤立的直方图;以及判定单元，用于基于孤立的直方图，确定输入图像是否包含背景元素。

公开(公告)号：US20130044952A1

公开(公告)日：2013-02-21

申请号：US13543544

申请日：2012-07-06

申请人： Jiyun Du

发明人： Jiyun Du

IPC分类号： G06K9/46

CPC分类号： G06K9/46 ,  G06K9/38 ,  G06K2209/01 ,  G06T7/12 ,  G06T7/136 ,  G06T7/194 ,  G06T2207/30176 ,  H04N1/403

摘要： There are provided an image processing apparatus, image processing method and a computer-readable, non-transitory medium that can binarize the input image so that the characters can be differentiated with high accuracy from the background area. The image processing apparatus includes an edge pixel extractor for extracting edge pixels from an input image, a first histogram generator for generating a first histogram based on a luminance value of each of the edge pixels, a second histogram generator for generating a second histogram based on a minimum luminance value among the luminance values of pixels neighboring each of the edge pixels, a static threshold calculator for obtaining a static threshold based on the first histogram and the second histogram, and a binarization unit for binarizing the input image by using the static threshold.

摘要翻译： 提供了一种图像处理装置，图像处理方法和可以将输入图像二值化的计算机可读的非暂时介质，使得可以从背景区域以高准确度区分字符。 图像处理装置包括用于从输入图像提取边缘像素的边缘像素提取器，用于基于每个边缘像素的亮度值生成第一直方图的第一直方图生成器，用于基于 在每个边缘像素附近的像素的亮度值中的最小亮度值，用于基于第一直方图和第二直方图获得静态阈值的静态阈值计算器，以及通过使用静态阈值来二值化输入图像的二值化单元 。