公开(公告)号：US09992375B2

公开(公告)日：2018-06-05

申请号：US15415067

申请日：2017-01-25

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： Ryo Matsubara ,  Hirotsugu Fusayasu ,  Katsuo Inokuchi ,  Tatsuya Hirota ,  Yuuichi Tutiya

IPC分类号： H04N1/00 ,  H04N1/028 ,  H04N1/12 ,  H04N1/19 ,  H04N1/191 ,  H04N1/193 ,  H04N1/031 ,  H04N1/40 ,  H04N1/401 ,  H04N1/407

CPC分类号： H04N1/401 ,  H04N1/00005 ,  H04N1/00013 ,  H04N1/00018 ,  H04N1/00034 ,  H04N1/00039 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00063 ,  H04N1/00068 ,  H04N1/00082 ,  H04N1/00087 ,  H04N1/02815 ,  H04N1/031 ,  H04N1/0311 ,  H04N1/0318 ,  H04N1/12 ,  H04N1/125 ,  H04N1/19 ,  H04N1/191 ,  H04N1/193 ,  H04N1/40006 ,  H04N1/40056 ,  H04N1/4076 ,  H04N2201/0081

摘要： An image reading device includes: a sensor module having a light source and a plurality of sensors; a white reference plate; and an image processor that generates correction data to be used for shading correction and performs the shading correction on image signals, using the correction data. The light source is configured to switch between at least a first luminous intensity and a second luminous intensity lower than the first luminous intensity. The image processor acquires intermediate data by causing the plurality of sensors to acquire an image signal of the white reference plate illuminated with the second luminous intensity, generates black correction data, based on the intermediate data, and performs the shading correction, using the black correction data, so that a density unevenness, in an image, caused by interference between image signals from the plurality of sensors.

公开(公告)号：US09930212B2

公开(公告)日：2018-03-27

申请号：US15346067

申请日：2016-11-08

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： Hirotsugu Fusayasu ,  Ryo Matsubara ,  Katsuo Inokuchi ,  Tatsuya Hirota ,  Yuuichi Tutiya

IPC分类号： H04N1/00 ,  H04N1/028 ,  H04N1/031 ,  H04N1/04 ,  H04N1/40 ,  H04N1/401 ,  H04N1/12 ,  H04N1/19 ,  H04N1/191 ,  H04N1/193

CPC分类号： H04N1/401 ,  H04N1/00005 ,  H04N1/00013 ,  H04N1/00018 ,  H04N1/00034 ,  H04N1/00039 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00063 ,  H04N1/00068 ,  H04N1/00082 ,  H04N1/00087 ,  H04N1/028 ,  H04N1/02855 ,  H04N1/031 ,  H04N1/0311 ,  H04N1/0318 ,  H04N1/04 ,  H04N1/12 ,  H04N1/125 ,  H04N1/19 ,  H04N1/191 ,  H04N1/193 ,  H04N1/40006 ,  H04N1/40056 ,  H04N1/4076 ,  H04N2201/0081

摘要： An image reading device has an image processor that generates correction data to be used for shading correction and performs the shading correction using the correction data. The image processor generates intermediate data with a predetermined density level, generates intermediate data in different positions in the sub-scanning direction based on image signals of a first reference plate and a second reference plate disposed in the different positions, generates first and second black correction data based on the respective intermediate data, generates black correction data according to the sub-scanning direction based on both the black correction data, and performs the shading correction using the black correction data in the respective positions in the sub-scanning direction.

公开(公告)号：US10122885B2

公开(公告)日：2018-11-06

申请号：US15674793

申请日：2017-08-11

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： Hirotsugu Fusayasu ,  Ryo Matsubara ,  Katsuo Inokuchi ,  Tatsuya Hirota ,  Yuuichi Tutiya

IPC分类号： H04N1/04 ,  H04N1/028 ,  G06T1/00 ,  H04N1/19 ,  H04N1/401 ,  H04N1/12 ,  H04N1/407

摘要： An image reading device includes: an FB glass; a sensor module having a light source and a plurality of sensors; and an image processor that generates correction data to be used for shading correction and performs the shading correction on image signals by using the correction data. The plurality of sensors is arranged in a main scanning direction and is configured to form an image signal on a single line. The image processor acquires second black data by causing the plurality of sensors to acquire an image signal of a reference sheet placed on the FB glass with the light source turned on, and generates black correction data based on the second black data. By performing the shading correction by using the black correction data, the image processor corrects density unevenness, in an image, caused by interference between image signals from the plurality of sensors.

公开(公告)号：US09930213B2

公开(公告)日：2018-03-27

申请号：US15363390

申请日：2016-11-29

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： Hirotsugu Fusayasu ,  Ryo Matsubara ,  Katsuo Inokuchi ,  Tatsuya Hirota ,  Yuuichi Tutiya

IPC分类号： H04N1/00 ,  H04N1/028 ,  H04N1/031 ,  H04N1/04 ,  H04N1/12 ,  H04N1/19 ,  H04N1/191 ,  H04N1/193 ,  H04N1/40 ,  H04N1/401 ,  H04N1/21

CPC分类号： H04N1/401 ,  H04N1/00005 ,  H04N1/00013 ,  H04N1/00018 ,  H04N1/00034 ,  H04N1/00039 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00063 ,  H04N1/00068 ,  H04N1/00082 ,  H04N1/00087 ,  H04N1/028 ,  H04N1/031 ,  H04N1/0311 ,  H04N1/0318 ,  H04N1/04 ,  H04N1/12 ,  H04N1/125 ,  H04N1/19 ,  H04N1/191 ,  H04N1/193 ,  H04N1/21 ,  H04N1/40006 ,  H04N1/40056 ,  H04N2201/0081

摘要： An image reading device includes an image processor that generates correction data to be used for shading correction and perform the shading correction using the correction data, and a memory that stores first black correction data to be used for the shading correction in a main scanning direction in a predetermined first position in a predetermined sub-scanning direction. The image processor generates third black data based on an image signal of a second reference plate extending in the sub-scanning direction in a predetermined second position in the main scanning direction, generates black correction data according to the sub-scanning direction based on the first black correction data and the third black data, and performs the shading correction using the black correction data so as to correct density unevenness in the main scanning direction and the sub-scanning direction caused by an interference between image signals from a plurality of sensors.

公开(公告)号：US09917982B2

公开(公告)日：2018-03-13

申请号：US15375943

申请日：2016-12-12

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： Katsuo Inokuchi ,  Hirotsugu Fusayasu ,  Ryo Matsubara ,  Tatsuya Hirota ,  Yuuichi Tutiya

IPC分类号： H04N1/00 ,  H04N1/40 ,  H04N1/401 ,  H04N1/12 ,  H04N1/191 ,  H04N1/193

CPC分类号： H04N1/401 ,  H04N1/00005 ,  H04N1/00013 ,  H04N1/00018 ,  H04N1/00034 ,  H04N1/00039 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00063 ,  H04N1/00068 ,  H04N1/00082 ,  H04N1/00087 ,  H04N1/12 ,  H04N1/125 ,  H04N1/19 ,  H04N1/191 ,  H04N1/193 ,  H04N1/40 ,  H04N1/40006 ,  H04N2201/0081 ,  H04N2201/0094

摘要： An image reading apparatus includes: a sensor module which includes a light source and sensors; a reference member for creating black correction data and white correction data; and an image processor. The image processor corrects uneven density of an image resulting from interference of image signals from the sensors, by performing, on the image signals obtained by the sensors, shading correction using black correction data and white correction data. The image processor obtains causes the sensors to obtain image signals of the reference member, and creates the white correction data based on white data, and the black correction data based on intermediate data. At least one of when creating the white correction data and when creating the black correction data, the image processor causes the sensors to obtain image signals of the reference member a plurality of times.