公开(公告)号：US20140212049A1

公开(公告)日：2014-07-31

申请号：US14095631

申请日：2013-12-03

申请人： PFU LIMITED

发明人： Keiji Honda

IPC分类号： G06T7/00

CPC分类号： G06T7/0085 ,  G06K9/36 ,  G06K9/4633 ,  G06K9/48 ,  G06T7/13 ,  G06T7/181 ,  G06T2207/30176

摘要： Provided are an image processing apparatus, image processing method and a computer-readable, non-transitory medium that can accurately detect document edges from a readout image. The image processing apparatus includes a first edge pixel detector for detecting a plurality of first edge pixels from an input image, a straight line detector for detecting a straight line from the first edge pixels, a classifying module for classifying the first edge pixels into on-line edge pixels and non-on-line edge pixels, a second edge pixel detector for detecting second edge pixels located between two of the on-line edge pixels, when there is any one of the non-on-line edge pixels between two of the on-line edge pixels, and a determining module for determining whether the non-on-line edge pixel represents a document edge, based on whether the two on-line edge pixels are connected by the second edge pixels via the non-on-line edge pixel.

摘要翻译： 提供了可以从读出图像精确地检测文档边缘的图像处理装置，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：第一边缘像素检测器，用于从输入图像检测多个第一边缘像素;直线检测器，用于检测来自第一边缘像素的直线;分类模块，用于将第一边缘像素分类为在线， 线边缘像素和非在线边缘像素的第二边缘像素，第二边缘像素检测器，用于检测位于两个在线边缘像素之间的第二边缘像素，当存在任何一个非在线边缘像素 在线边缘像素，以及确定模块，用于基于两个在线边缘像素是否通过第二边缘像素通过非在线边缘像素连接，确定非在线边缘像素是否表示文档边缘。 线边像素。

公开(公告)号：US11790493B2

公开(公告)日：2023-10-17

申请号：US17058581

申请日：2018-09-28

申请人： PFU LIMITED

发明人： Kiyoto Kosaka ,  Keiji Honda

IPC分类号： G06T5/00 ,  G06T7/70 ,  G06T7/90

CPC分类号： G06T5/005 ,  G06T7/70 ,  G06T7/90 ,  G06T2207/10024

摘要： Provided are an image processing apparatus, a control method, and a control program for more accurately removing the seal component from the input image including the seal. An image processing apparatus includes an acquisition module to acquire an input image, a detection module to detect a seal area corresponding to a seal in the input image, a calculation module to calculate a seal color ratio for each pixel in the seal area, a background information generating module to generate background information, a seal removal image generating module to generate a seal removal image acquired by removing a seal component from the input image, by synthesizing each pixel in the seal area and the background information corresponding to each pixel, based on the seal color ratio, and an output module to output the seal removal image or information generated using the seal removal image.

公开(公告)号：US11115560B2

公开(公告)日：2021-09-07

申请号：US17058577

申请日：2018-09-28

申请人： PFU LIMITED

发明人： Keiji Honda ,  Kiyoto Kosaka

IPC分类号： H04N1/38 ,  H04N1/387 ,  G06T5/50

摘要： Provided are an image processing apparatus, a control method, and a control program for more accurately removing the background pattern from the image including the background pattern. An image processing apparatus includes an acquisition module to acquire an input image, a multi-valued image generating module to generate a multi-valued image from the input image, a binary image generating module to generate a binary image acquired by binarizing the input image, a detection module to detect a thin line having a width equal to or less than a predetermined number of pixels from the multi-valued image, a background pattern removal image generating module to generate a background pattern removal image in which the thin line is removed from the binary image, based on the thin line detected from the multi-valued image, and an output module to output the background pattern removal image or information generated using the background pattern removal image.

公开(公告)号：US09117283B2

公开(公告)日：2015-08-25

申请号：US14095631

申请日：2013-12-03

申请人： PFU LIMITED

发明人： Keiji Honda

IPC分类号： G06K9/48 ,  G06T7/00 ,  G06K9/36

CPC分类号： G06T7/0085 ,  G06K9/36 ,  G06K9/4633 ,  G06K9/48 ,  G06T7/13 ,  G06T7/181 ,  G06T2207/30176

摘要： Provided are an image processing apparatus, image processing method and a computer-readable, non-transitory medium that can accurately detect document edges from a readout image. The image processing apparatus includes a first edge pixel detector for detecting a plurality of first edge pixels from an input image, a straight line detector for detecting a straight line from the first edge pixels, a classifying module for classifying the first edge pixels into on-line edge pixels and non-on-line edge pixels, a second edge pixel detector for detecting second edge pixels located between two of the on-line edge pixels, when there is any one of the non-on-line edge pixels between two of the on-line edge pixels, and a determining module for determining whether the non-on-line edge pixel represents a document edge, based on whether the two on-line edge pixels are connected by the second edge pixels via the non-on-line edge pixel.

摘要翻译： 提供了可以从读出图像精确地检测文档边缘的图像处理装置，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：第一边缘像素检测器，用于从输入图像检测多个第一边缘像素;直线检测器，用于检测来自第一边缘像素的直线;分类模块，用于将第一边缘像素分类为在线， 线边缘像素和非在线边缘像素的第二边缘像素，第二边缘像素检测器，用于检测位于两个在线边缘像素之间的第二边缘像素，当存在任何一个非在线边缘像素 在线边缘像素，以及确定模块，用于基于两个在线边缘像素是否通过第二边缘像素通过非在线边缘像素连接，确定非在线边缘像素是否表示文档边缘。 线边像素。