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公开(公告)号：US20200372278A1
公开(公告)日：2020-11-26
申请号：US16881769
申请日：2020-05-22
Inventor： Ryoji Iwamura , Shingo Murata , Kazuaki Fujita , Kenji Takahama
Abstract: An information processing method and apparatus are provided that performs operations including identifying, from an image obtained via an image capture device, at least one character string that is relevant in identifying information to be extracted from the image; defining an area, within the image, that includes information as an information extraction area, the information including a plurality of information elements; selecting a region within the defined area where the information to be extracted is expected to be present using a feature within the defined area; removing the feature from the selected region and correcting one or more errors associated with the information caused by the removal of the feature and extracting one or more alphanumeric characters from the corrected information, wherein the extracted one or more alphanumeric characters correspond to the elements of the information and are associated with a respective one of the at least one character strings.
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公开(公告)号：US20200350846A1
公开(公告)日：2020-11-05
申请号：US16864794
申请日：2020-05-01
Applicant: Canon U.S.A., Inc.
Inventor： Badr Elmaanaoui , Alexander Altshuler , Pierre-Yves Mabboux
IPC: H02P23/24
Abstract: System, apparatus, and methods for controlling a motor by using servo-to-edge direction feedback are disclosed. An exemplary apparatus comprises: a fiber optic rotary junction (FORJ) having a rotatable portion; a motor to rotate the rotatable portion; a connector to connect the rotatable portion to a rotatable fiber of an imaging probe; a sensor positioned in close proximity to a target and configured to output a signal indicative of which one of at least two distinguishable regions of the target is proximal to the sensor; and a controller configured to control the rotational direction of the motor based on the sensor signal. In one embodiment, the motor is a servo-motor, and the rotation of the motor and/or rotatable portion is controlled by a servo-loop to change the rotation direction of the motor back-and-forth around a predetermined rotational position without the use of an encoder.
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公开(公告)号：US10825152B2
公开(公告)日：2020-11-03
申请号：US16124545
申请日：2018-09-07
Applicant: CANON U.S.A., INC.
Abstract: Methods, apparatuses, systems, and storage mediums for correcting distortion of a spectrally encoded endoscopy (SEE) image are provided. A first reference pattern comprising a plurality of radial lines is scanned with an SEE spectral line to obtain a first image. Signs of a tangential shift and/or of a radial shift of the spectral line may be determined, and magnitudes of the tangential shift and of the radial shift may be computed. A second reference pattern comprising at least a circle with the SEE spectral line may be scanned to obtain a second image in a case where the radial shift is positive. The magnitude of the radial shift may be computed based on the magnitude of the tangential shift and a radius of the circle. The tangential shift and the radial shift may then be applied for correcting distortion.
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54.发明授权公开(公告)号：US10809538B2
公开(公告)日：2020-10-20
申请号：US15823441
申请日：2017-11-27
Applicant: CANON U.S.A., INC.
Inventor： Osamu Koyama , Akira Yamamoto , Naoki Kohara
IPC: G01B9/02 , G02B27/10 , F21K9/64 , F21V8/00 , G01J3/50 , G01J3/02 , G01J3/04 , G01J3/28 , A61B5/00 , G01J3/36 , G01J3/18 , G02B6/42 , G02B6/36 , G02B6/34
Abstract: Image acquisition apparatuses, spectral apparatuses, methods and storage mediums for use with same are provided herein. At least one apparatus includes: a diffraction element irradiated by a light; a fiber for receiving reflected scattered light from a subject; a diffraction grating dispersing the transmitted light into light fluxes of wavelength bands again; an optical system imaging the split light fluxes; and an imaging device near the focal point of the optical system. An image is changed by rotating the diffraction grating, from which a two-dimensional image is acquired. The transmitted light may be branched into two or more, and input to a collimator lens and imaged as multiple spectral sequences by the optical system. At least one apparatus may form light fluxes traveling at different angles; and may acquire spectral information of the reflected and scattered light. Preferably, for the luminous fluxes, no gap exists in an image.
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公开(公告)号：US10791923B2
公开(公告)日：2020-10-06
申请号：US16577445
申请日：2019-09-20
Applicant: Canon U.S.A., Inc.
Inventor： Tzu-Yu Wu
Abstract: An optical probe includes first and second light guiding components, and a ball lens arranged along an optical axis and enclosed in a sheath having asymmetric optical power. The probe transmits at least two light beams including first and second beams each having a different wavelength. The ball lens has a curved surface and an angled surface arranged such that light is reflected off from the angled surface and focused by the curved surface at a working distance with a beam waist profile having lateral and longitudinal directions. Beam waist locations of the first and second beams are different from each other, and the beam waist profiles of the first and second beams in the lateral direction differs less than the beam waist profiles in the longitudinal direction. This ball lens design compensates for the sheath asymmetric optical power and provides balanced astigmatism and substantially achromatic performance.
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Patent Agency Ranking
56.发明申请公开(公告)号：US20200310102A1
公开(公告)日：2020-10-01
申请号：US16828385
申请日：2020-03-24
Applicant: Canon U.S.A., Inc.
Inventor： Alexander Altshuler
Abstract: According to at least one embodiment of the present disclosure, there is provided an apparatus comprising: a first optical fiber in communication with a light source; a second optical fiber in communication with an imaging probe; and a fiber optic rotary joint (FORJ) where a distal end of the first optical fiber and a proximal end of the second optical fiber are positioned coaxially with a gap between the fibers' end faces. The FORJ is adapted to transmit light between the fibers' end faces, and to rotate at least one of first and second optical fibers relative to the other. An actuator is configured to axially translate at least one of the first and second optical fibers relative to the other in a reciprocal motion. A light intensity sensor is adapted to measure light intensity changes due to optical interference between light reflected from the fibers' end faces. And, a control system is configured to receive light intensity measurements from the sensor and to use the light intensity measurements to control the reciprocal motion of the linear actuator to maintain the length of the gap between fibers' end faces substantially constant.
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公开(公告)号：US10775241B2
公开(公告)日：2020-09-15
申请号：US15634825
申请日：2017-06-27
Applicant: Canon U.S.A., Inc.
Inventor： Masaki Hosoda , Haruo Nakaji
Abstract: The present disclosure relates in general to Diffuse Correlation Spectroscopy system for obtaining an autocorrelation function, and more particular, to a correlator and method for controlling a sampling time period and data length used for calculating an autocorrelation function. The correlator may include, a sampling gate circuit which is open during a variable time period and provides a data sample, a correlation circuit which calculates a correlation function from the data sample provided from the sampling gate circuit, and a parameter determining circuit which determines a sampling time period to be used by the sampling gate circuit based on the correlation function.
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公开(公告)号：US20200281658A1
公开(公告)日：2020-09-10
申请号：US16880368
申请日：2020-05-21
Applicant: Canon U.S.A. Inc.
Inventor： Devashree S. Desai , Takahisa Kato , Lydia G. Olson
Abstract: A method of performing a percutaneous multi-probe treatment includes: acquiring a scan image of an object to be treated with multi-probe percutaneous insertions; determining a first point in a region of interest (ROI) in the scan image; determining a second point at a surface of the object in the scan image; generating a reference trajectory by connecting the first point and the second point; arranging, around the first point, a number of third points corresponding to tips of probes to be inserted into the object; generating planned insertion trajectories for the probes based on the number of probes to be inserted and the reference trajectory; and causing a monitor to display superposed on the scan image, at least one of the planned insertion trajectories. The planned insertion trajectories extend in a geometric relationship to the reference trajectory and pass through the third points and through one or more second points.
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公开(公告)号：US20200273155A1
公开(公告)日：2020-08-27
申请号：US16795949
申请日：2020-02-20
Applicant: Canon U.S.A., Inc.
Inventor： Kazunari Kawabata
Abstract: An image processing apparatus and method are provided which quantifies sharpness of one or more areas in an image. The sharpness processing includes acquiring an image from an image capturing apparatus, obtaining an object information characterizing a position of an object within the captured image, and controlling, based on a sharpness of each of a plurality of regions identified within the captured image according to the object information, an unit such that a sharpness information representing a numeric value regarding a sharpness of the captured image is displayed with the captured image.
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公开(公告)号：US10678044B2
公开(公告)日：2020-06-09
申请号：US15684287
申请日：2017-08-23
Applicant: Canon U.S.A., Inc.
Inventor： Alexander Altshuler , Badr Elmaanaoui
Abstract: A rotation-free beam-steering device for manipulating probing and reflected optical beams includes at least one electrowetting cell having at least one side wall defining an inner space. The at least one side wall has a lining adjacent to the inner space. A liquid at least partially fills the inner space. The liquid has at least one controlled surface not in contact with the wall lining. The liquid further has a contact angle with the wall lining. The at least one controlled surface is disposed to interface with an optical beam exiting from a distal end of an optical fiber at an incidence angle. At least two electrodes are provided separated from the inner space by the lining. An electrical potential on the at least two electrodes is controlled to adjust the contact angle of the liquid bounding the at least one controlled surface.
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