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1. 发明授权

US08351090B2 Image processing apparatus, method of imaging processing and storage medium 有权
标题翻译：图像处理装置，成像处理方法和存储介质
公开(公告)号：US08351090B2
公开(公告)日：2013-01-08
申请号：US12544171
申请日：2009-08-19
申请人： Yoichiro Makino
发明人： Yoichiro Makino
IPC分类号： H04N1/04
CPC分类号： H04N1/407 , H04N1/00681 , H04N1/00721 , H04N1/00737 , H04N1/0075 , H04N1/00774 , H04N1/10 , H04N1/193 , H04N2201/0434
摘要： An image processing apparatus determines a direction of document placement relative to a scanning direction based on a direction of a shadow region in an input image when a line sensor having a light receiving element performs a scan and an image read from a book document by a reading apparatus is input. When the direction of the binding portion of the document is determined to be along a longitudinal direction of the line sensor, an image of a region read by the light receiving element of the line sensor from reflected light undergoing specular reflection from the document is detected based on the amount of variation in luminance between adjacent pixels in the read image of the book document. Luminance of the image corresponding to the region is corrected.
摘要翻译：当具有光接收元件的线传感器执行扫描时，图像处理装置基于输入图像中的阴影区域的方向，相对于扫描方向确定文档放置的方向，以及通过读取从书本文档读取的图像输入设备。当文件的装订部分的方向被确定为沿着线传感器的纵向方向时，基于来自文档的镜面反射的反射光从线传感器的光接收元件读取的区域的图像被基于关于书本文件的读取图像中的相邻像素之间的亮度变化量。校正与该区域对应的图像的亮度。

2. 发明授权

US08154779B2 Image reading apparatus 有权
公开(公告)号：US08154779B2
公开(公告)日：2012-04-10
申请号：US12763631
申请日：2010-04-20
申请人： Yoichiro Makino , Koji Kobayashi , Nobuyuki Bannai
发明人： Yoichiro Makino , Koji Kobayashi , Nobuyuki Bannai
IPC分类号： G03F3/08 , G06F15/00 , H04N1/46 , G03B27/04 , G03G15/00
CPC分类号： H04N1/387
摘要： A method is provided for processing image data read from a book document placed on a platen of an image reading apparatus. The method includes determining a background pixel of the image data based on a luminance difference or a color difference between neighboring pixel arrays, identifying a shadow region based on a luminance change between the neighboring background pixel arrays, discriminatively detecting a shadow of a binding portion and a shadow of a front edge in a document region with reference to a changing direction of shadow luminance, and performing a luminance correction on the shadow region according to characteristics of the shadows.

3. 发明申请

US20100188673A1 IMAGE PROCESSING METHOD AND IMAGE PROCESSING APPARATUS 有权
标题翻译：图像处理方法和图像处理装置
公开(公告)号：US20100188673A1
公开(公告)日：2010-07-29
申请号：US12622515
申请日：2009-11-20
申请人： Yoichiro Makino
发明人： Yoichiro Makino
IPC分类号： H04N1/60
CPC分类号： H04N1/58 , H04N1/6072
摘要： An image processing method and apparatus RGB luminance data for target pixel P(n) and adjacent pixels P(n−1) and P(n+1) to one set of luminance data L(i) and two sets of color difference data Cr(i) and Cb(i). Intermediate values Crm(n) and Cbm(n) for the color difference data are calculated for the pixels P(n−1), P(n), P(n+1). A change in the luminance data in the vicinity of the target pixel P(n) is determined. When a predetermined condition is satisfied, the intermediate values replace color difference data Cr′(n) and Cb′(n) for the target pixel P(n). When the predetermined condition is not satisfied, weighted average values of the intermediate values and original color difference values Cr(n) and Cb(n) replace the color difference data for the target pixel P(n). Thereafter, the color difference data for the target pixel P(n) and the luminance data that are not changed are again converted in the RGB color space.
摘要翻译：图像处理方法和装置将目标像素P（n）和相邻像素P（n-1）和P（n + 1）的RGB亮度数据与一组亮度数据L（i）和两组色差数据Cr （i）和Cb（i）。针对像素P（n-1），P（n），P（n + 1）计算色差数据的中间值Crm（n）和Cbm（n）确定目标像素P（n）附近的亮度数据的变化。当满足预定条件时，中间值代替目标像素P（n）的色差数据Cr'（n）和Cb'（n）。当不满足预定条件时，中间值和原始色差值Cr（n）和Cb（n）的加权平均值代替目标像素P（n）的色差数据。此后，在RGB颜色空间中再次转换目标像素P（n）的色差数据和未改变的亮度数据。

4. 发明申请

US20100046047A1 IMAGE PROCESSING APPARATUS, METHOD OF IMAGING PROCESSING AND STORAGE MEDIUM 有权
标题翻译：图像处理设备，成像处理方法和存储介质
公开(公告)号：US20100046047A1
公开(公告)日：2010-02-25
申请号：US12544171
申请日：2009-08-19
申请人： Yoichiro Makino
发明人： Yoichiro Makino
IPC分类号： H04N1/04
CPC分类号： H04N1/407 , H04N1/00681 , H04N1/00721 , H04N1/00737 , H04N1/0075 , H04N1/00774 , H04N1/10 , H04N1/193 , H04N2201/0434
摘要： An image processing apparatus determines a direction of document placement relative to a scanning direction based on a direction of a shadow region in an input image when a line sensor having a light receiving element performs a scan and an image read from a book document by a reading apparatus is input. When the direction of the binding portion of the document is determined to be along a longitudinal direction of the line sensor, an image of a region read by the light receiving element of the line sensor from reflected light undergoing specular reflection from the document is detected based on the amount of variation in luminance between adjacent pixels in the read image of the book document. Luminance of the image corresponding to the region is corrected.
摘要翻译：当具有光接收元件的线传感器执行扫描时，图像处理装置基于输入图像中的阴影区域的方向，相对于扫描方向确定文档放置的方向，以及通过读取从书本文档读取的图像输入设备。当文件的装订部分的方向被确定为沿着线传感器的纵向方向时，基于来自文档的镜面反射的反射光从线传感器的光接收元件读取的区域的图像被基于关于书本文件的读取图像中的相邻像素之间的亮度变化量。校正与该区域对应的图像的亮度。

5. 发明申请

US20060039604A1 Image processing method, image processing apparatus and storage medium 有权
公开(公告)号：US20060039604A1
公开(公告)日：2006-02-23
申请号：US11254639
申请日：2005-10-21
申请人： Kimihiko Fukawa , Yoichiro Makino
发明人： Kimihiko Fukawa , Yoichiro Makino
IPC分类号： G06K9/00
CPC分类号： H04N1/4074 , H04N1/40062
摘要： A histogram of density difference between each pixel and an adjacent pixel is prepared from the image data obtained by pre-scanning an original. Then an approximation function for the density difference histogram is generated, and the kind of the original is discriminated as text/photograph/other based on the coefficient of the approximation function. According to the kind of the original, a density conversion table matching each kind is prepared, and is used for density correction of the image obtained by main scanning. For a text original, the density conversion table is prepared from the distribution of data close to the light and dark ends of the density histogram. For a photograph original, the density conversion table is prepared from the coefficient of the approximation function for the cumulative histogram of the density histogram.

6. 发明授权

US08792139B2 Image processing apparatus and method of controlling same 有权
标题翻译：图像处理装置及其控制方法
公开(公告)号：US08792139B2
公开(公告)日：2014-07-29
申请号：US13332191
申请日：2011-12-20
申请人： Yoichiro Makino
发明人： Yoichiro Makino
IPC分类号： G03F3/08 , G06T5/00 , H04N1/407 , H04N1/38 , H04N1/409 , H04N1/393
CPC分类号： H04N1/38 , G06T5/002 , G06T2207/20204 , H04N1/393 , H04N1/401 , H04N1/407 , H04N1/409 , H04N2201/0434
摘要： An image correcting method for an image processing apparatus that reads a bound document and corrects a shadow in a bound portion in obtained document image data includes extracting shadow image data from the document image data, generating a grid with which a ratio of changes in luminance between the grid lines in directions perpendicular to each other is smaller than in a square grid and which has grid points within a capacity of a memory for correction values, calculating first correction values that corrects luminance of pixels in the shadow image data corresponding to grid points, storing the first correction values in the memory, calculating second correction values for luminance of the pixels in the shadow image data based on first correction values of grid points close to each pixel, and correcting luminance of the document image data using the first and second correction values.
摘要翻译：一种图像校正方法，用于读取所获得的文档图像数据中的绑定部分中的绑定文档并修正阴影的图像处理装置包括从文档图像数据中提取阴影图像数据，生成网格，其中，亮度变化率彼此垂直的方向的网格线小于方格网格，并且具有用于校正值的存储器的容量内的网格点，计算校正对应于网格点的阴影图像数据中的像素的亮度的第一校正值，将所述第一校正值存储在所述存储器中，基于接近每个像素的网格点的第一校正值计算所述阴影图像数据中的像素的亮度的第二校正值，以及使用所述第一和第二校正来校正文档图像数据的亮度价值观。

7. 发明申请

US20120120457A1 IMAGE READING APPARATUS 有权
标题翻译：图像阅读器
公开(公告)号：US20120120457A1
公开(公告)日：2012-05-17
申请号：US13360509
申请日：2012-01-27
申请人： Yoichiro Makino , Koji Kobayashi , Nobuyuki Bannai
发明人： Yoichiro Makino , Koji Kobayashi , Nobuyuki Bannai
IPC分类号： H04N1/40
CPC分类号： H04N1/387
摘要： A method is provided for processing image data read from a book document placed on a platen of an image reading apparatus. The method includes determining a background pixel of the image data based on a luminance difference or a color difference between neighboring pixel arrays, identifying a shadow region based on a luminance change between the neighboring background pixel arrays, discriminatively detecting a shadow of a binding portion and a shadow of a front edge in a document region with reference to a changing direction of shadow luminance, and performing a luminance correction on the shadow region according to characteristics of the shadows.
摘要翻译：提供了一种用于处理从放置在图像读取装置的压板上的书本文档读取的图像数据的方法。该方法包括基于相邻像素阵列之间的亮度差或色差来确定图像数据的背景像素，基于相邻背景像素阵列之间的亮度变化识别阴影区域，区分性地检测装订部分的阴影和参考阴影亮度的改变方向在文档区域中的前边缘的阴影，以及根据阴影的特性对阴影区域进行亮度校正。

8. 发明授权

US07899244B2 Color shift correction image processing method and image processing apparatus 有权
标题翻译：色移校正图像处理方法和图像处理装置
公开(公告)号：US07899244B2
公开(公告)日：2011-03-01
申请号：US12622515
申请日：2009-11-20
申请人： Yoichiro Makino
发明人： Yoichiro Makino
IPC分类号： G06K9/00 , G03F3/08
CPC分类号： H04N1/58 , H04N1/6072
摘要： An image processing method and apparatus RGB luminance data for target pixel P(n) and adjacent pixels P(n−1) and P(n+1) to one set of luminance data L(i) and two sets of color difference data Cr(i) and Cb(i). Intermediate values Crm(n) and Cbm(n) for the color difference data are calculated for the pixels P(n−1), P(n). A change in the luminance data in the vicinity of the target pixel P(n) is determined. When a predetermined condition is satisfied, the intermediate values replace color difference data Cr′(n) and Cb′(n) for the target pixel P(n). When the predetermined condition is not satisfied, weighted average values of the intermediate values and original color difference values Cr(n) and Cb(n) replace the color difference data for the target pixel P(n). Thereafter, the color difference data for the target pixel P(n) and the luminance data that are not changed are again converted in the RGB color space.
摘要翻译：图像处理方法和装置将目标像素P（n）和相邻像素P（n-1）和P（n + 1）的RGB亮度数据与一组亮度数据L（i）和两组色差数据Cr （i）和Cb（i）。针对像素P（n-1），P（n）计算色差数据的中间值Crm（n）和Cbm（n）。决定目标像素P（n）附近的亮度数据的变化。当满足预定条件时，中间值代替目标像素P（n）的色差数据Cr'（n）和Cb'（n）。当不满足预定条件时，中间值和原始色差值Cr（n）和Cb（n）的加权平均值代替目标像素P（n）的色差数据。此后，在RGB颜色空间中再次转换目标像素P（n）的色差数据和未改变的亮度数据。

9. 发明申请

US20080024845A1 IMAGE READING APPARATUS 有权
标题翻译：图像阅读器
公开(公告)号：US20080024845A1
公开(公告)日：2008-01-31
申请号：US11781691
申请日：2007-07-23
申请人： Yoichiro Makino , Koji Kobayashi , Nobuyuki Bannai
发明人： Yoichiro Makino , Koji Kobayashi , Nobuyuki Bannai
IPC分类号： H04N1/46
CPC分类号： H04N1/387
摘要： A method is provided for processing image data read from a book document placed on a platen of an image reading apparatus. The method includes determining a background pixel of the image data based on a luminance difference or a color difference between neighboring pixel arrays, identifying a shadow region based on a luminance change between the neighboring background pixel arrays, discriminatively detecting a shadow of a binding portion and a shadow of a front edge in a document region with reference to a changing direction of shadow luminance, and performing a luminance correction on the shadow region according to characteristics of the shadows.
摘要翻译：提供了一种用于处理从放置在图像读取装置的压板上的书本文档读取的图像数据的方法。该方法包括基于相邻像素阵列之间的亮度差或色差来确定图像数据的背景像素，基于相邻背景像素阵列之间的亮度变化识别阴影区域，区分性地检测装订部分的阴影和参考阴影亮度的改变方向在文档区域中的前边缘的阴影，以及根据阴影的特性对阴影区域进行亮度校正。

10. 发明申请

US20060023943A1 Image processing method and image processing apparatus 失效
标题翻译：图像处理方法和图像处理装置
公开(公告)号：US20060023943A1
公开(公告)日：2006-02-02
申请号：US11193862
申请日：2005-07-29
申请人： Yoichiro Makino
发明人： Yoichiro Makino
IPC分类号： G06K9/00 , G03F3/08
CPC分类号： H04N1/58 , H04N1/6072
摘要： An image processing method and an image processing apparatus is provided wherein, regardless of the color of a character, color shift that occurs at a contour portion is corrected, and even with a background other than white, a clear image can be output for which color shift at the contour has been corrected.
摘要翻译：提供一种图像处理方法和图像处理装置，其中，不管字符的颜色如何，校正在轮廓部分发生的颜色偏移，并且即使在除了白色以外的背景的情况下，也可以输出清晰的图像，轮廓上的位移已被纠正。

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