公开(公告)号：US07619663B2

公开(公告)日：2009-11-17

申请号：US11082742

申请日：2005-03-17

申请人： Keiichi Sakurai ,  Tetsuji Makino

发明人： Keiichi Sakurai ,  Tetsuji Makino

IPC分类号： H04N5/217 ,  H04N5/228 ,  G06K9/36

CPC分类号： G06T3/00 ,  G06T3/403 ,  G06T5/006

摘要： A digital camera acquires the image of an original including an original from a shot image acquired by shooting. The digital camera reduces the image of the original and corrects distortion of the reduced image which is originated from the characteristic of a lens. As the digital camera performs distortion correction on the reduced image, the number of arithmetic operations in distortion correction is reduced, making distortion correction simpler. The digital camera acquires a rectangle defined by the contour of the original, extracts the image of the original to acquire an original image before reduction, and acquires an associated projection-transformed image by affine transformation. The digital camera acquires pixel positions of the original image using an affine parameter, and acquires pixel positions of the image before distortion correction using a relational expression of distortion correction performed on the reduced image.

摘要翻译： 数码相机从通过拍摄获得的拍摄图像中获取包括原稿的原稿的图像。 数码相机减少原稿的图像，并且校正由透镜的特性产生的缩小图像的失真。 随着数字照相机对缩小图像进行失真校正，减少了失真校正中的算术运算数，使失真校正更简单。 数字照相机获取由原稿轮廓定义的矩形，提取原稿的图像以在缩小之前获取原始图像，并通过仿射变换获取相关的投影变换图像。 数字照相机使用仿射参数获取原始图像的像素位置，并且使用对缩小图像执行的失真校正的关系表达式来获取畸变校正之前的图像的像素位置。

公开(公告)号：US20050047775A1

公开(公告)日：2005-03-03

申请号：US10928226

申请日：2004-08-27

申请人： Keiichi Sakurai ,  Akihiko Nagasaka ,  Tetsuji Makino ,  Yoshihiro Teshima ,  Kazumasa Morichika

发明人： Keiichi Sakurai ,  Akihiko Nagasaka ,  Tetsuji Makino ,  Yoshihiro Teshima ,  Kazumasa Morichika

IPC分类号： H04N5/222 ,  G03B17/50 ,  G03B21/00 ,  H04N1/00 ,  H04N5/66 ,  H04N5/74 ,  H04N7/18 ,  H04N9/31 ,  H04N101/00

CPC分类号： H04N1/19594 ,  H04N1/00204 ,  H04N2201/0081 ,  H04N2201/0089 ,  H04N2201/0436

摘要： A computer obtains a change amount of an image of a manuscript. If the change amount of the image of the manuscript is equal to or larger than a predetermined threshold, the computer determines that the image does not have movement, such as in a case where the manuscript is replaced, and switches the resolution of the image, which is possible to shorten the processing time, to low resolution. In a case where the manuscript is placed on a base, if the change amount of the image of the manuscript is less than the predetermined threshold, and the computer determines that the image does not have movement, the computer switches the resolution of the image to high resolution.

摘要翻译： 计算机获得原稿的图像的变化量。 如果原稿的图像的变化量等于或大于预定阈值，则计算机确定图像不具有移动，例如在原稿被替换的情况下，并且切换图像的分辨率， 这可以缩短处理时间，降低分辨率。 在原稿放置在基座的情况下，如果原稿的图像的变化量小于预定阈值，并且计算机确定图像不具有移动，则计算机将图像的分辨率切换为 高分辨率。

公开(公告)号：US07607783B2

公开(公告)日：2009-10-27

申请号：US10964538

申请日：2004-10-13

申请人： Keiichi Sakurai ,  Akihiko Nagasaka ,  Tetsuji Makino ,  Yoshihiro Teshima

发明人： Keiichi Sakurai ,  Akihiko Nagasaka ,  Tetsuji Makino ,  Yoshihiro Teshima

IPC分类号： G03B21/14 ,  G06K9/40 ,  H04N3/23 ,  H04N3/223 ,  H04N3/227

CPC分类号： G06T3/0006

摘要： A document camera has an image processing apparatus, which acquires the contour of an image of an original by means of a Roberts filter. The image processing apparatus detects straight lines as candidates for forming an image of the original from the acquired contour and acquires the shape of a quadrangle of the original. The image processing apparatus determines the projection parameters showing the relationship between the shape of the image of the original and the shape of the actual original from the positions of the corners of the quadrangle and executes an operation of projection/transformation on the image of the original. The document camera outputs the image data of the image to a projector, which projects an image of the original on a screen according to the image data.

摘要翻译： 文件照相机具有通过罗伯茨滤波器获取原稿的图像的轮廓的图像处理装置。 图像处理装置将直线作为从获取的轮廓形成原稿的图像的候选，并且获取原稿的四边形的形状。 图像处理装置从四边形的角度的位置确定表示原稿的形状与实际原稿的形状的关系的投影参数，并对原稿的图像执行投影/变换的操作 。 文件摄影机将图像的图像数据输出到投影仪，投影仪根据图像数据在屏幕上投射原稿的图像。

公开(公告)号：US20050078879A1

公开(公告)日：2005-04-14

申请号：US10964538

申请日：2004-10-13

申请人： Keiichi Sakurai ,  Akihiko Nagasaka ,  Tetsuji Makino ,  Yoshihiro Teshima

发明人： Keiichi Sakurai ,  Akihiko Nagasaka ,  Tetsuji Makino ,  Yoshihiro Teshima

IPC分类号： H04N5/225 ,  G06T3/00 ,  H04N5/222 ,  H04N5/232 ,  G06K9/00 ,  H04N3/223

CPC分类号： G06T3/0006

摘要： A document camera has an image processing apparatus, which acquires the contour of an image of an original by means of a Roberts filter. The image processing apparatus detects straight lines as candidates for forming an image of the original from the acquired contour and acquires the shape of a quadrangle of the original. The image processing apparatus determines the projection parameters showing the relationship between the shape of the image of the original and the shape of the actual original from the positions of the corners of the quadrangle and executes an operation of projection/transformation on the image of the original. The document camera outputs the image data of the image to a projector, which projects an image of the original on a screen according to the image data.

摘要翻译： 文件照相机具有通过罗伯茨滤波器获取原稿的图像的轮廓的图像处理装置。 图像处理装置将直线作为从获取的轮廓形成原稿的图像的候选，并且获取原稿的四边形的形状。 图像处理装置从四边形的角度的位置确定表示原稿的形状与实际原稿的形状的关系的投影参数，并对原稿的图像执行投影/变换的操作 。 文件摄影机将图像的图像数据输出到投影仪，投影仪根据图像数据在屏幕上投射原稿的图像。

公开(公告)号：US07542074B2

公开(公告)日：2009-06-02

申请号：US10928226

申请日：2004-08-27

申请人： Keiichi Sakurai ,  Akihiko Nagasaka ,  Tetsuji Makino ,  Yoshihiro Teshima ,  Kazumasa Morichika

发明人： Keiichi Sakurai ,  Akihiko Nagasaka ,  Tetsuji Makino ,  Yoshihiro Teshima ,  Kazumasa Morichika

IPC分类号： H04N5/228

CPC分类号： H04N1/19594 ,  H04N1/00204 ,  H04N2201/0081 ,  H04N2201/0089 ,  H04N2201/0436

摘要： A computer obtains a change amount of an image of a manuscript. If the change amount of the image of the manuscript is equal to or larger than a predetermined threshold, the computer determines that the image has movement, such as in a case where the manuscript is replaced, and switches the resolution of the image, which is possible to shorten the processing time, to low resolution. In a case where the manuscript is placed on a base, if the change amount of the image of the manuscript is less than the predetermined threshold, and the computer determines that the image does not have movement, the computer switches the resolution of the image to high resolution.

摘要翻译： 计算机获得原稿的图像的变化量。 如果原稿的图像的变化量等于或大于预定阈值，则计算机确定图像具有移动，例如在更换原稿的情况下，并且切换图像的分辨率，即 可能缩短处理时间，降低分辨率。 在原稿放置在基座的情况下，如果原稿的图像的变化量小于预定阈值，并且计算机确定图像不具有移动，则计算机将图像的分辨率切换为 高分辨率。

公开(公告)号：US20080111903A1

公开(公告)日：2008-05-15

申请号：US11899376

申请日：2007-09-05

申请人： Tetsuji Makino ,  Keiichi Sakurai

发明人： Tetsuji Makino ,  Keiichi Sakurai

IPC分类号： H04N5/335

CPC分类号： H04N5/3572 ,  H04N5/23232

摘要： A photographing unit photographs an object “n” times respectively with exposure times T1(1) to T1(n) to generate “n” sheets of images of the same object per an exposure time T1, where “n” is a whole number and the exposure times T1(1) to T1(n) are obtained by dividing the exposure time T1 by the whole number of “n”, a displacement correcting unit (32a, 32b) calculates a correction value for correcting displacement of the images, and a limb-darkening compensating unit (32d) corrects a position of a limb-darkening characteristic component of each of the images, using the correction value. Meanwhile, the limb-darkening characteristic components of the images whose positions have been corrected are combined to generate a limb-darkening characteristic component for compensation. Limb darkening in a combined image is compensated for, using the limb-darkening characteristic component for compensation, whereby a time required for performing a limb-darkening compensating process is decreased.

摘要翻译： 拍摄单元分别以曝光时间T 1（1）至T 1（n）拍摄对象“n”次，以在每个曝光时间T 1产生相同物体的“n”张图像，其中“n”为 通过将曝光时间T 1除以整数“n”获得整数和曝光时间T 1（1）至T 1（n），位移校正单元（32a，32b）计算校正值 用于校正图像的位移，并且肢体增暗补偿单元（32d）使用校正值来校正每个图像的肢体变暗特征分量的位置。 同时，将已经校正了位置的图像的肢体变暗的特征分量组合以产生用于补偿的肢体变暗特征分量。 通过使用用于补偿的肢体变暗特征分量来补偿组合图像中的肢体变暗，由此减少执行肢体变暗补偿处理所需的时间。 “img id =”custom-character-00001“he =”7.53mm“wi =”135.93mm“file =”US20080111903A1-20080515-P00999.TIF“img-content =”character“img-format =”tif“/>

公开(公告)号：US20050206753A1

公开(公告)日：2005-09-22

申请号：US11082742

申请日：2005-03-17

申请人： Keiichi Sakurai ,  Tetsuji Makino

发明人： Keiichi Sakurai ,  Tetsuji Makino

IPC分类号： G06T3/00 ,  G06T3/40 ,  H04N5/232 ,  H04N101/00 ,  H04N5/217

CPC分类号： G06T3/00 ,  G06T3/403 ,  G06T5/006

摘要： A digital camera acquires the image of an original including an original from a shot image acquired by shooting. The digital camera reduces the image of the original and corrects distortion of the reduced image which is originated from the characteristic of a lens. As the digital camera performs distortion correction on the reduced image, the number of arithmetic operations in distortion correction is reduced, making distortion correction simpler. The digital camera acquires a rectangle defined by the contour of the original, extracts the image of the original to acquire an original image before reduction, and acquires an associated projection-transformed image by affine transformation. The digital camera acquires pixel positions of the original image using an affine parameter, and acquires pixel positions of the image before distortion correction using a relational expression of distortion correction performed on the reduced image.

摘要翻译： 数码相机从通过拍摄获得的拍摄图像中获取包括原稿的原稿的图像。 数码相机减少原稿的图像，并且校正由透镜的特性产生的缩小图像的失真。 随着数字照相机对缩小图像进行失真校正，减少了失真校正中的算术运算数，使失真校正更简单。 数字照相机获取由原稿轮廓定义的矩形，提取原稿的图像以在缩小之前获取原始图像，并通过仿射变换获取相关的投影变换图像。 数字照相机使用仿射参数获取原始图像的像素位置，并且使用对缩小图像执行的失真校正的关系表达式来获取畸变校正之前的图像的像素位置。

公开(公告)号：US20050078192A1

公开(公告)日：2005-04-14

申请号：US10965639

申请日：2004-10-13

申请人： Keiichi Sakurai ,  Tetsuji Makino

发明人： Keiichi Sakurai ,  Tetsuji Makino

IPC分类号： G06T3/00 ,  G06K9/32 ,  G06T3/40 ,  G06T5/00 ,  H04N1/387 ,  H04N1/393 ,  H04N5/225 ,  H04N5/232 ,  H04N101/00

CPC分类号： H04N1/3872 ,  G06K9/3283 ,  G06T3/00 ,  G06T5/006

摘要： A digital camera has a CPU and an image processing apparatus. The image processing apparatus acquires a contour from an image acquired by shooting a whiteboard as a shooting target by using a Roberts filter. The image processing apparatus detects straight lines to be candidates which form the image of the whiteboard from the acquired contour, and acquires the rectangular shape of the whiteboard. The image processing apparatus acquires projection parameters indicating the relationship between the image of the whiteboard and the real whiteboard from vertex positions of the quadrangle, and performs projection transformation of the image of the whiteboard.

摘要翻译： 数码相机具有CPU和图像处理装置。 图像处理装置通过使用罗伯茨滤波器从拍摄白板作为拍摄目标获取的图像获取轮廓。 图像处理装置从获取的轮廓检测作为形成白板图像的候选的直线，并获取白板的矩形。 图像处理装置从四边形的顶点位置获取表示白板的图像与实际白板的关系的投影参数，并进行白板的图像的投影变换。

公开(公告)号：US07791655B2

公开(公告)日：2010-09-07

申请号：US11899376

申请日：2007-09-05

申请人： Tetsuji Makino ,  Keiichi Sakurai

发明人： Tetsuji Makino ,  Keiichi Sakurai

IPC分类号： H04N9/64 ,  H04N5/228

CPC分类号： H04N5/3572 ,  H04N5/23232

摘要： A photographing unit photographs an object “n” times respectively with exposure times T1(1) to T1(n) to generate “n” sheets of images of the same object per an exposure time T1, where “n” is a whole number and the exposure times T1(1) to T1(n) are obtained by dividing the exposure time T1 by the whole number of “n”, a displacement correcting unit (32a, 32b) calculates a correction value for correcting displacement of the images, and a limb-darkening compensating unit (32d) corrects a position of a limb-darkening characteristic component of each of the images, using the correction value. Meanwhile, the limb-darkening characteristic components of the images whose positions have been corrected are combined to generate a limb-darkening characteristic component for compensation. Limb darkening in a combined image is compensated for, using the limb-darkening characteristic component for compensation, whereby a time required for performing a limb-darkening compensating process is decreased.

摘要翻译： 摄影单元分别以曝光时间T1（1）〜T1（n）拍摄物体“n”次，以在每个曝光时间T1产生相同物体的“n”张图像，其中“n”是整数， 曝光时间T1（1）〜T1（n）通过将曝光时间T1除以“n”的整数来获得，位移校正单元（32a，32b）计算用于校正图像的位移的校正值， 肢体变暗补偿单元（32d）使用校正值校正每个图像的肢体变暗特征分量的位置。 同时，将已经校正了位置的图像的肢体变暗的特征分量组合以产生用于补偿的肢体变暗特征分量。 通过使用用于补偿的肢体变暗特征分量来补偿组合图像中的肢体变暗，由此减少执行肢体变暗补偿处理所需的时间。

公开(公告)号：US07486310B2

公开(公告)日：2009-02-03

申请号：US10965639

申请日：2004-10-13

申请人： Keiichi Sakurai ,  Tetsuji Makino

发明人： Keiichi Sakurai ,  Tetsuji Makino

IPC分类号： H04N5/225 ,  H04N5/228 ,  H04N5/208

CPC分类号： H04N1/3872 ,  G06K9/3283 ,  G06T3/00 ,  G06T5/006

摘要： A digital camera has a CPU and an image processing apparatus. The image processing apparatus acquires a contour from an image acquired by shooting a whiteboard as a shooting target by using a Roberts filter. The image processing apparatus detects straight lines to be candidates which form the image of the whiteboard from the acquired contour, and acquires the rectangular shape of the whiteboard. The image processing apparatus acquires projection parameters indicating the relationship between the image of the whiteboard and the real whiteboard from vertex positions of the quadrangle, and performs projection transformation of the image of the whiteboard.

摘要翻译： 数码相机具有CPU和图像处理装置。 图像处理装置通过使用罗伯茨滤波器从拍摄白板作为拍摄目标获取的图像获取轮廓。 图像处理装置从获取的轮廓检测作为形成白板图像的候选的直线，并获取白板的矩形。 图像处理装置从四边形的顶点位置获取表示白板的图像与实际白板的关系的投影参数，并进行白板的图像的投影变换。