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公开(公告)号：US20220313084A1
公开(公告)日：2022-10-06
申请号：US17642236
申请日：2020-09-10
Applicant: Topcon Corporation
Inventor： Jongsik KIM , Dawei LI , Toshihiro MINO , Zhenguo WANG , Kinpui CHAN
Abstract: An ophthalmological imaging device includes illumination optics having an illumination light source that outputs an illumination light, a scanner that redirects the illumination light toward a portion of an object to be imaged, and an optical image capture device including a camera that receives backscattered light that is scattered from the illumination light by the object and captures first and second images of the backscattered light. The device also includes a control processor that controls the scanner and the optical image capture device to cause the optical image capture device to capture the first and second images of the object. The first and second images are captured by the camera at different times and extracted from different portions of the backscattered light. The device also includes an image processor that generates a stereoscopic image from the first and second images of the object.
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82.发明申请公开(公告)号：US20220284608A1
公开(公告)日：2022-09-08
申请号：US17653632
申请日：2022-03-04
Applicant: Topcon Corporation
Inventor： You Sasaki
Abstract: Synchronizing between multiple optical data can be maintained by a facilitated method. An optical data processing operational unit 108 includes an optical data obtaining part 301 which obtains laser scan data by a laser scanner mounted on a moving body and image data of a photographed image photographed by a camera mounted on the moving body; and a delay time obtaining part 305 which calculates Δt when the point cloud image viewed from the viewpoint at time a specific time T made based on the laser scan data is obtained and the camera photographs with a delay Δt when the camera is ordered to photograph at time T; wherein relationships of exterior orientation elements of the laser scanner and the camera are known, and Δt is calculated in a condition in which difference in overlapping degree of the point cloud image and the photographed image is minimal.
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83.发明申请公开(公告)号：US20220283272A1
公开(公告)日：2022-09-08
申请号：US17653636
申请日：2022-03-04
Applicant: Topcon Corporation
Inventor： You SASAKI
Abstract: Synchronizing between multiple optical data using: an optical data obtaining part which obtains a laser scan point cloud obtained by a laser scanner mounted on a moving body and image data of an image photographed by a camera mounted on the moving body; a correspondence relationship determining part which determines correspondence relationship between point cloud image viewed from a specific viewpoint and the photographed image; a camera position and orientation calculating part which calculates camera position X1 in photographing of the photographed image by a single photograph orientation based on the correspondence relationships; and a delay time (Δt) calculating part that calculates Δt when the camera photographs with a delay Δt when the camera is commanded to take a photograph at a time T, in which the Δt is calculated based on a difference of the time T1 corresponding to the camera position X1 and the time T.
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公开(公告)号：US20220276050A1
公开(公告)日：2022-09-01
申请号：US17667163
申请日：2022-02-08
Applicant: TOPCON CORPORATION
Inventor： Takeshi KIKUCHI
Abstract: A managing system includes an electronic marker to be used near a measurement point, including a position sensor, a posture sensor, a communication section, and a marker operation button group, an eyewear device to be worn on the head of the worker, including a display, an imaging section, a position sensor, a posture sensor, and a communication section, an arithmetic device for synchronizing positions and postures of the electronic marker and the eyewear device, displaying a handwritten data synthesized image obtained by synthesizing the handwritten data written at coordinates of a tip end port of the electronic marker of the marker operation button group with an image imaged by the imaging section, and applying OCR processing to the handwritten data synthesized image, and a storage device for storing the handwritten data synthesized image and text data extracted by the OCR processing as additional data of the measurement point.
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公开(公告)号：US20220265136A1
公开(公告)日：2022-08-25
申请号：US17179416
申请日：2021-02-19
Applicant: TOPCON CORPORATION
Inventor： Toshihiro MINO
Abstract: An ophthalmologic information processing apparatus according to the embodiments include a generator, an extractor, and a phase correction unit. The generator is configured to generate a phase difference profile by performing averaging processing in a depth direction on phase differences obtained by calculating for each depth position of A-lines between two adjacent B-frames of complex OCT data of a subject's eye. The extractor is configured to a phase drift from the phase difference profile generated by the generator. The phase correction unit is configured to correct a phase of first complex OCT data of any one of the two B-frames based on the phase drift extracted by the extractor.
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Patent Agency Ranking
公开(公告)号：US20220229182A1
公开(公告)日：2022-07-21
申请号：US17575726
申请日：2022-01-14
Applicant: TOPCON Corporation
Inventor： Fumio Ohtomo , Kaoru Kumagai , Ikuo Ishinabe
Abstract: There is provided a surveying instrument including a distance measurement arithmetic module configured to measure a distance to an object and the reflection intensity of a reflected distance measuring light based on a distance measuring light and the reflected distance measuring light, a narrow-angle image pickup module configured to acquire an image with an axis of the distance measuring optical as a center, an optical axis deflector configured to have a wavelength dispersion compensation prism arranged in the distance measuring optical axis and deflect the distance measuring optical axis by the rotation of the wavelength dispersion compensation prism, an extracting means configured to extract an end face reflection image of the wavelength dispersion compensation prism from the image, and an arithmetic control module configured to calculate a deflecting direction of the optical axis deflector based on the end face reflection image extracted by the extracting means.
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公开(公告)号：US20220192488A1
公开(公告)日：2022-06-23
申请号：US17692231
申请日：2022-03-11
Applicant: Topcon Corporation
Inventor： Toshihiro MINO , Jongsik KIM , Dawei LI , Zhenguo WANG , Kinpui CHAN
Abstract: An ophthalmic apparatus includes an illumination optical system, an imaging optical system, and a controller. The illumination optical system is configured to generate illumination light using light from a light source, and to illuminate a changeable illumination region on a predetermined site of a subject's eye with the illumination light having a light intensity corresponding to a size of the illumination region. The imaging optical system is configured to guide returning light of the illumination light from the subject's eye to a light receiving surface of an image sensor. The controller is configured to control the image sensor to set an opening range so as to overlap an illumination range of the returning light on the light receiving surface corresponding to the illumination region and to capture a light receiving result obtained by a light receiving element in the set opening range.
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公开(公告)号：US11363948B2
公开(公告)日：2022-06-21
申请号：US16691882
申请日：2019-11-22
Applicant: OSAKA UNIVERSITY , TOPCON CORPORATION
Inventor： Takashi Fujikado , Yoko Hirohara , Makoto Saika , Suguru Miyagawa
Abstract: An ophthalmologic device includes: a visual target presenting unit configured to present a common visual target to be viewed with both subject's eyes; a presenting distance changing unit configured to change a presenting distance of the visual target presented by the visual target presenting unit from a predetermined far vision distance to a predetermined near vision distance; an ocular characteristic acquiring unit configured to objectively acquire an optical characteristic of the subject's eyes; an addition power adding unit configured to add the addition power to the both subject's eyes; and a control unit configured to cause the presenting distance changing unit to change the presenting distance and the ocular characteristic acquiring unit to continuously acquire the optical characteristic, in a state in which an addition power is added to the both subject's eyes by the addition power adding unit.
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89.发明授权公开(公告)号：US11361481B2
公开(公告)日：2022-06-14
申请号：US16574453
申请日：2019-09-18
Applicant: Topcon Corporation
Inventor： Song Mei , Zaixing Mao , Ying Dong , Zhenguo Wang , Kinpui Chan
Abstract: Shadows caused by opacities and obstructions (such as blood vessels) can block detection of structural information of objects below the shadow-causing structure, affecting visualization and analysis of those deeper structures. An image processing method for removing these shadows includes applying a low pass filter to an energy profile of an image to remove high frequency fluctuations in energy, thereby effectively recovering lower energy inside shadow regions and removing high frequency speckle. The image is then adjusted, for example by linear scaling, based on the filtered energy profile. Two dimensional filters may also be applied for volumes.
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公开(公告)号：US20220156427A1
公开(公告)日：2022-05-19
申请号：US17511406
申请日：2021-10-26
Applicant: TOPCON CORPORATION
Inventor： Yuki SENOO , Masato OKA , Masaki KIUCHI , Nobuyuki NISHITA
Abstract: Provided is construction management so that a final form of a structure is as designed. In the construction management, reading a design model of a structure from a design database, designing an initial construction model so that final form physical simulation results obtained by performing a physical simulation match the design model, extracting a construction completed part model, a calculating step partial physical simulation results obtained by performing the physical simulation for the construction completed part model, obtaining a measurement model from a measurement database, a calculating step an actual object difference by comparing the partial physical simulation results with the measurement model, and instructing construction details of a part to be constructed next and/or later of the initial construction model or an actual object of the structure based on the actual object difference, are performed.
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