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公开(公告)号：US11457121B2
公开(公告)日：2022-09-27
申请号：US17487278
申请日：2021-09-28
摘要： A reading device includes a first light source configured to emit light, a second light source configured to emit light in a wavelength of light different from a wavelength of light of the first light source, circuitry configured to instruct the first light source and the second light source to turn on and turn off, a first light-intensity adjuster configured to adjust light intensity of the first light source based on a first light intensity value, a second light-intensity adjuster configured to adjust light intensity of the second light source based on a second light intensity value, a first image sensor configured to receive the light that is emitted from the first light source and is reflected by an object, and a second image sensor configured to receive the light that is emitted from the first light source and the second light source and is reflected by the object.
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公开(公告)号：US11553108B2
公开(公告)日：2023-01-10
申请号：US17481676
申请日：2021-09-22
摘要： A reading device includes a first light source, a second light source, a first reading unit, a second reading unit, a comparison unit, and a correction unit. The first source irradiates an object to be read, with first light having a first transmittance to the object. The second source irradiates the object with second light having a second transmittance to the object. The first reading unit reads the first light from the object to output first image data. The second reading unit reads the second light from the object to output second image data. The comparison unit compares a data difference between the first and second image data. In a case where the data difference is equal to or larger than a threshold, the correction unit corrects data of an image area having the data difference equal to or larger than the threshold in the first or second image data.
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公开(公告)号：US11170243B2
公开(公告)日：2021-11-09
申请号：US16886810
申请日：2020-05-29
申请人： Masamoto Nakazawa , Tadaaki Oyama , Yutaka Ohmiya
发明人： Masamoto Nakazawa , Tadaaki Oyama , Yutaka Ohmiya
摘要： An image processing device includes a light source, an image reader, and circuitry. The light source is configured to irradiate an object at least with invisible light. The image reader is configured to read first information and second information. The first information is included in the object and indicating a first characteristic in response to the object being irradiated with the invisible light. The second information is included in the object and indicating a second characteristic in response to the object being irradiated with the invisible light. The circuitry is configured to selectively output the first information read by the image reader.
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公开(公告)号：US11095788B2
公开(公告)日：2021-08-17
申请号：US16589329
申请日：2019-10-01
申请人： Tadaaki Oyama , Masamoto Nakazawa , Hiroki Shirado , Tomohiro Sasa , Tatsuya Ozaki , Kohsuke Nambara
发明人： Tadaaki Oyama , Masamoto Nakazawa , Hiroki Shirado , Tomohiro Sasa , Tatsuya Ozaki , Kohsuke Nambara
摘要： A document size detection device includes: a light source that irradiates a document placed on placing means with scanning light via the placing means; a reading unit that receives reflection light from the document via the placing means to acquire image data of the document; and circuitry to set an illumination depth of the scanning light at a size detection time when the size is detected, shallower than an illumination depth of the scanning light at an image reading time when an image of the document is read, and detects, at the size detection time, the size based on a difference between first image data acquired in a state in which the scanning light is switched off and second image data acquired in a state in which the scanning light is switched on.
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公开(公告)号：US11089177B2
公开(公告)日：2021-08-10
申请号：US16589258
申请日：2019-10-01
申请人： Tatsuya Ozaki , Tadaaki Oyama , Tomohiro Sasa , Hiroki Shirado , Kohsuke Nambara , Masamoto Nakazawa
发明人： Tatsuya Ozaki , Tadaaki Oyama , Tomohiro Sasa , Hiroki Shirado , Kohsuke Nambara , Masamoto Nakazawa
摘要： A reading device includes: a light source that irradiates a subject with scanning light; a light receiving section that receives reflection light from the subject; and circuitry to: control the light source to switch on and off of the scanning light; control the light receiver to receive the reflection light from the subject for a predetermined acquisition time at a predetermined acquisition interval so as to acquire data; and calculate a difference between the data acquired while the scanning light is switched on and the data acquired while the scanning light is switched off. The predetermined acquisition time and the predetermined acquisition interval are set such that the acquisition time or a total time of the acquisition time and the acquisition interval become an integer multiple of a fluctuation cycle of a fluctuation factor.
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公开(公告)号：US10834272B2
公开(公告)日：2020-11-10
申请号：US16533984
申请日：2019-08-07
申请人： Masamoto Nakazawa , Tadaaki Oyama , Masahiro Itoh , Masato Tanaka
发明人： Masamoto Nakazawa , Tadaaki Oyama , Masahiro Itoh , Masato Tanaka
IPC分类号： H04N1/00
摘要： A reading device includes an imaging element and correcting circuitry. The imaging element is configured to receive light from an object selectively irradiated with visible light or invisible light. The correcting circuitry is configured to apply correction processing based on a difference in an optical characteristic between an invisible light region and a visible light region to an image signal in the invisible light region output from the imaging element and output the image signal corrected.
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公开(公告)号：US11457116B2
公开(公告)日：2022-09-27
申请号：US17338683
申请日：2021-06-04
IPC分类号： H04N1/00
摘要： An image processing apparatus includes an invisible light source configured to emit invisible light to a subject, a visible light source configured to emit visible light to the subject, an invisible image reading sensor configured to read invisible reflection light reflected from the subject and acquire an invisible image, and a visible image reading sensor configured to read visible reflection light reflected from the subject and acquire a visible image. The invisible reflection light is a part of the invisible light emitted from the invisible light source. The visible reflection light is a part of the visible light emitted from the visible light source. The image processing apparatus further includes circuitry configured to restore information lost in the invisible image acquired by the invisible image reading sensor.
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公开(公告)号：US11190666B2
公开(公告)日：2021-11-30
申请号：US16861233
申请日：2020-04-29
申请人： Yutaka Ohmiya , Masamoto Nakazawa , Tadaaki Oyama
发明人： Yutaka Ohmiya , Masamoto Nakazawa , Tadaaki Oyama
IPC分类号： H04N1/10
摘要： An image processing device includes a light source, a reader, and circuitry. The light source is configured to irradiate an object at least with invisible light. The reader is configured to read a first image from the object irradiated with the invisible light. The circuitry is configured to generate a second image from the first image read by the reader. The circuitry is configured to recognize first information in the second image.
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公开(公告)号：US10855866B2
公开(公告)日：2020-12-01
申请号：US16575457
申请日：2019-09-19
申请人： Tomohiro Sasa , Hiroki Shirado , Tadaaki Oyama , Tatsuya Ozaki , Kohsuke Nambara
发明人： Tomohiro Sasa , Hiroki Shirado , Tadaaki Oyama , Tatsuya Ozaki , Kohsuke Nambara
IPC分类号： H04N1/00
摘要： A document size detection device includes: a light source to irradiate a document with light; an imaging device to receive light reflected at the document; and circuitry to control switch on and off of the light source and movement in a sub-scanning direction of the light source, and determine a size of the document based on image data acquired by the imaging device. The circuitry is to determine a size in a main-scanning direction of the document based on: first image data acquired when the light source is switched off while the light source is at a first reading position; second image data acquired when the light source is switched on while the light source is at the first reading position; and third image data acquired when the light source is switched on while the light source is being moved from the first reading position to a second reading position.
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10.发明申请公开(公告)号：US20200120224A1
公开(公告)日：2020-04-16
申请号：US16575457
申请日：2019-09-19
申请人： Tomohiro Sasa , Hiroki Shirado , Tadaaki Oyama , Tatsuya Ozaki , Kohsuke Nambara
发明人： Tomohiro Sasa , Hiroki Shirado , Tadaaki Oyama , Tatsuya Ozaki , Kohsuke Nambara
IPC分类号： H04N1/00
摘要： A document size detection device includes: a light source to irradiate a document with light; an imaging device to receive light reflected at the document; and circuitry to control switch on and off of the light source and movement in a sub-scanning direction of the light source, and determine a size of the document based on image data acquired by the imaging device. The circuitry is to determine a size in a main-scanning direction of the document based on: first image data acquired when the light source is switched off while the light source is at a first reading position; second image data acquired when the light source is switched on while the light source is at the first reading position; and third image data acquired when the light source is switched on while the light source is being moved from the first reading position to a second reading position.
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