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公开(公告)号：US20170330026A1
公开(公告)日：2017-11-16
申请号：US15486700
申请日：2017-04-13
申请人： FUJITSU LIMITED
发明人： Shanshan YU , Daisuke Ishii , Satoshi Nakashima
CPC分类号： G06K9/00281 , G06K9/00248 , G06K9/00288 , G06K9/4604 , G06K9/4661 , G06K2009/4666
摘要： A method includes acquiring an image including an object's face, detecting multiple candidate regions having characteristics of human eyes from the image, extracting high-frequency components of spatial frequencies in the image from the multiple candidate regions, distinguishing first regions likely to correspond to the eyes over second regions likely to correspond to eyebrows for the multiple candidate regions based on amounts of the high-frequency components of the multiple candidate regions, and outputting results of the distinguishing.
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公开(公告)号：US10692210B2
公开(公告)日：2020-06-23
申请号：US15989265
申请日：2018-05-25
申请人： FUJITSU LIMITED
发明人： Daisuke Ishii , Osafumi Nakayama
摘要： A recording medium storing a program causing a computer to execute: detecting an eye area of the eye; detecting bright spot areas in the eye area; setting a reference point in a pupil; setting a first search lines radially; determining whether each first search lines passes through the bright spot areas; determining, for a second search line that passes through the bright spot area, a degree of overlapping between the bright spot area and the pupil based on brightness on a circumference of the bright spot area; setting a search range for a point on a contour of the pupil based on the degree; detecting a first point on the contour; detecting, for a third search line that does not pass through the bright spot areas, a second point on the contour on the third search line; and detecting the pupil, based on the first and second points.
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公开(公告)号：US10417494B2
公开(公告)日：2019-09-17
申请号：US15262104
申请日：2016-09-12
申请人： FUJITSU LIMITED
发明人： Daisuke Ishii , Satoshi Nakashima
摘要： A line-of-sight detection method includes detecting an eye region of a subject from an image, determining whether a position of a boundary between a pupil and an iris is detected from the image based on a brightness change in the eye region, executing, in accordance with a result of the determining, at least one of first processing in which a position of a center of the pupil is detected based on an outline of the pupil and second processing in which the position of the center of the pupil is detected based on another outline of the iris, and detecting a line of sight of the subject based on the position of the center of the pupil detected by the at least one of the first processing and the second processing.
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4.发明申请公开(公告)号：US20190191098A1
公开(公告)日：2019-06-20
申请号：US16210043
申请日：2018-12-05
申请人： FUJITSU LIMITED
发明人： Daisuke Ishii , Osafumi NAKAYAMA
CPC分类号： H04N5/23299 , G06T7/75 , H04N5/23218 , H04N7/181
摘要： An object tracking apparatus is configured to execute a tracking process, a prediction process, an influence-degree obtaining process, and a difficulty-degree obtaining process, wherein the influence-degree obtaining process is configured to obtain a backside influence degree representing that a detection of an object to be tracked is affected by other object that overlaps the object, wherein the difficulty-degree obtaining process is configured to calculate, for each object to be tracked, a detection difficulty degree for detecting the object from each of next frames captured by respective cameras, based on the backside influence degree, wherein the tracking process is configured to select the next frame that is included in a set of next frames in a pieces of video and from which the object is to be detected, based on the detection difficulty degree, and detect the object from the selected next frames.
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公开(公告)号：US20170091520A1
公开(公告)日：2017-03-30
申请号：US15262104
申请日：2016-09-12
申请人： FUJITSU LIMITED
发明人： Daisuke Ishii , Satoshi NAKASHIMA
CPC分类号： G06K9/0061 , G06F3/013 , G06K9/00604 , G06K9/00617 , G06K9/4604 , G06K9/50
摘要： A line-of-sight detection method includes detecting an eye region of a subject from an image, determining whether a position of a boundary between a pupil and an iris is detected from the image based on a brightness change in the eye region, executing, in accordance with a result of the determining, at least one of first processing in which a position of a center of the pupil is detected based on an outline of the pupil and second processing in which the position of the center of the pupil is detected based on another outline of the iris, and detecting a line of sight of the subject based on the position of the center of the pupil detected by the at least one of the first processing and the second processing.
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公开(公告)号：US10893207B2
公开(公告)日：2021-01-12
申请号：US16210043
申请日：2018-12-05
申请人： FUJITSU LIMITED
发明人： Daisuke Ishii , Osafumi Nakayama
摘要： An object tracking apparatus is configured to execute a tracking process, a prediction process, an influence-degree obtaining process, and a difficulty-degree obtaining process, wherein the influence-degree obtaining process is configured to obtain a backside influence degree representing that a detection of an object to be tracked is affected by other object that overlaps the object, wherein the difficulty-degree obtaining process is configured to calculate, for each object to be tracked, a detection difficulty degree for detecting the object from each of next frames captured by respective cameras, based on the backside influence degree, wherein the tracking process is configured to select the next frame that is included in a set of next frames in a pieces of video and from which the object is to be detected, based on the detection difficulty degree, and detect the object from the selected next frames.
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7.发明申请公开(公告)号：US20180350070A1
公开(公告)日：2018-12-06
申请号：US15989265
申请日：2018-05-25
申请人： FUJITSU LIMITED
发明人： Daisuke Ishii , Osafumi NAKAYAMA
CPC分类号： G06T7/0012 , G06F3/013 , G06K9/00604 , G06K9/4604 , G06K9/4652 , G06T7/62 , G06T7/70 , G06T7/73 , G06T2207/30041
摘要： A recording medium storing a program causing a computer to execute: detecting an eye area of the eye; detecting bright spot areas in the eye area; setting a reference point in a pupa; setting a first search lines radially; determining whether each first search lines passes through the bright spot areas; determining, for a second search line that passes through the bright spot area, a degree of overlapping between the bright spot area and the pupil based on brightness on a circumference of the bright spot area; setting a search range for a point on a contour of the pupil based on the degree; detecting a first point on the contour; detecting, for a third search line that does not pass through the bright spot areas, a second point on the contour on the third search line; and detecting the pupil, based on the first and second points,
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公开(公告)号：US20170286771A1
公开(公告)日：2017-10-05
申请号：US15448722
申请日：2017-03-03
申请人： FUJITSU LIMITED
发明人： Daisuke Ishii , Satoshi NAKASHIMA
CPC分类号： G06K9/00617 , A61B3/0025 , A61B3/113 , G06K9/00248 , G06K9/00604 , G06K9/0061 , G06K9/2036 , G06K9/52 , G06T7/73 , G06T2207/30201
摘要： A gaze detection apparatus includes: an image capturing unit which generates an image representing both eyes of a user; an eye detection unit which, for each of the eyes, detects an eye region containing the eye from the image; a pupil detection unit which, for one of the eyes, detects a pupil region containing a pupil from the eye region; an estimating unit which obtains, based on the pupil region detected for the one eye, an estimated shape of the pupil region on the image for the other one of the eyes; a redetection unit which detects the pupil region by searching for a region having a shape that matches the estimated shape from within the eye region detected for the other eye; and a gaze detection unit which detects the user's gaze direction based on a position of the pupil region detected for each of the eyes.
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