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公开(公告)号：US20200209600A1
公开(公告)日：2020-07-02
申请号：US16812010
申请日：2020-03-06
Applicant: LEICA BIOSYSTEMS IMAGING, INC.
Inventor： Leng-Chun CHEN , Yunlu ZOU , Allen OLSON , Peyman NAJMABADI , Greg CRANDALL , Nicholas NEWBERG , Aaron STEARRETT
Abstract: Two-pass capture of a macro image. In an embodiment, a scanning apparatus comprises a stage, a high-resolution camera, and a lens that provides a field of view, substantially equal in width to a slide width, to the high-resolution camera. The apparatus also comprises a first illumination system for transmission-mode illumination, and a second illumination system for reflection-mode illumination. Processor(s) move the stage in a first direction to capture a first macro image of a specimen during a single pass while the field of view is illuminated by the first illumination system, and move the stage in a second direction to capture a second macro image of the specimen during a single pass while the field of view is illuminated by the second illumination system. The processor(s) identify artifacts in the second macro image, and, based on those artifacts, correct the first macro image to generate a modified first macro image.
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公开(公告)号：US20240064400A1
公开(公告)日：2024-02-22
申请号：US18500231
申请日：2023-11-02
Applicant: Leica Biosystems Imaging, Inc.
Inventor： Allen H. OLSON , Yunlu ZOU , Bharat ANNALDAS , Leng-Chun CHEN
CPC classification number: H04N23/67 , G02B21/002 , G02B21/244 , G02B21/367 , H04N3/06 , H04N23/90 , H04N23/56
Abstract: Real-time focusing in a slide-scanning system. In an embodiment, focus points are added to 500 an initialized focus map while acquiring a plurality of image stripes of a sample on a glass slide. For each image stripe, a plurality of frames, collectively representing the image stripe, may be acquired using both an imaging line-scan camera and a tilted focusing line-scan camera. Focus points, representing positions of best focus for trusted frames, are added to the focus map. Outlying focus points are removed from the focus map. In some cases, one or more image stripes may be reacquired. Finally, the image stripes are assembled into a composite image of the sample.
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Patent Agency Ranking
公开(公告)号：US20190101739A1
公开(公告)日：2019-04-04
申请号：US16147465
申请日：2018-09-28
Applicant: Leica Biosystems Imaging, Inc.
Inventor： Leng-Chun CHEN , Allen OLSON , Yunlu ZOU , Peyman NAJMABADI , Greg CRANDALL
CPC classification number: G02B21/244 , G02B21/006 , G02B21/0076 , G02B21/008 , G06T7/50 , G06T2207/10061 , G06T2207/10064 , H04N5/37206
Abstract: Real-time autofocus. In an embodiment, a scanning apparatus includes an imaging sensor, a focusing sensor, an objective lens, and processor(s) configured to analyze image data captured by the imaging and focusing sensors, and move the objective lens. Real-time autofocus during scanning of a sample is achieved by determining a true-Z value for the objective lens for a point on a sample and for each of a plurality of regions on the sample. The true-Z values and/or surfaces calculated therefrom are used to determine a predicted-Z value for an unscanned region of the sample. The objective lens is adjusted to the predicted-Z value at the beginning of the unscanned region. After scanning the region, a true-Z value is determined for the region and compared to the predicted-Z value. A rescan of the region is initiated if the comparison exceeds a predetermined threshold.
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公开(公告)号：US20190101736A1
公开(公告)日：2019-04-04
申请号：US16146991
申请日：2018-09-28
Applicant: Leica Biosystems Imaging, Inc.
Inventor： Leng-Chun CHEN , Yunlu ZOU , Allen OLSON , Peyman NAJMABADI , Greg CRANDALL , Nicholas NEWBERG , Aaron STEARRETT
Abstract: Two-pass capture of a macro image. In an embodiment, a scanning apparatus comprises a stage, a high-resolution camera, and a lens that provides a field of view, substantially equal in width to a slide width, to the high-resolution camera. The apparatus also comprises a first illumination system for transmission-mode illumination, and a second illumination system for reflection-mode illumination. Processor(s) move the stage in a first direction to capture a first macro image of a specimen during a single pass while the field of view is illuminated by the first illumination system, and move the stage in a second direction to capture a second macro image of the specimen during a single pass while the field of view is illuminated by the second illumination system. The processor(s) identify artifacts in the second macro image, and, based on those artifacts, correct the first macro image to generate a modified first macro image.
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公开(公告)号：US20220357565A1
公开(公告)日：2022-11-10
申请号：US17814180
申请日：2022-07-21
Applicant: Leica Biosystems Imaging, Inc.
Inventor： Leng-Chun CHEN , Allen OLSON , Yunlu ZOU , Peyman NAJMABADI , Greg CRANDALL
Abstract: Real-time autofocus. In an embodiment, a scanning apparatus includes an imaging sensor, a focusing sensor, an objective lens, and processor(s) configured to analyze image data captured by the imaging and focusing sensors, and move the objective lens. Real-time autofocus during scanning of a sample is achieved by determining a true-Z value for the objective lens for a point on a sample and for each of a plurality of regions on the sample. The true-Z values and/or surfaces calculated therefrom are used to determine a predicted-Z value for an unscanned region of the sample. The objective lens is adjusted to the predicted-Z value at the beginning of the unscanned region. After scanning the region, a true-Z value is determined for the region and compared to the predicted-Z value. A rescan of the region is initiated if the comparison exceeds a predetermined threshold.
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公开(公告)号：US20200064612A1
公开(公告)日：2020-02-27
申请号：US16674742
申请日：2019-11-05
Applicant: Leica Biosystems Imaging, Inc.
Inventor： Leng-Chun CHEN , Allen OLSON , Yunlu ZOU , Peyman NAJMABADI , Greg CRANDALL
Abstract: Real-time autofocus. In an embodiment, a scanning apparatus includes an imaging sensor, a focusing sensor, an objective lens, and processor(s) configured to analyze image data captured by the imaging and focusing sensors, and move the objective lens. Real-time autofocus during scanning of a sample is achieved by determining a true-Z value for the objective lens for a point on a sample and for each of a plurality of regions on the sample. The true-Z values and/or surfaces calculated therefrom are used to determine a predicted-Z value for an unscanned region of the sample. The objective lens is adjusted to the predicted-Z value at the beginning of the unscanned region. After scanning the region, a true-Z value is determined for the region and compared to the predicted-Z value. A rescan of the region is initiated if the comparison exceeds a predetermined threshold.
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公开(公告)号：US20210103134A1
公开(公告)日：2021-04-08
申请号：US17105251
申请日：2020-11-25
Applicant: LEICA BIOSYSTEMS IMAGING, INC.
Inventor： Leng-Chun CHEN , Allen OLSON , Yunlu ZOU , Peyman NAJMABADI , Greg CRANDALL
Abstract: Real-time autofocus. In an embodiment, a scanning apparatus includes an imaging sensor, a focusing sensor, an objective lens, and processor(s) configured to analyze image data captured by the imaging and focusing sensors, and move the objective lens. Real-time autofocus during scanning of a sample is achieved by determining a true-Z value for the objective lens for a point on a sample and for each of a plurality of regions on the sample. The true-Z values and/or surfaces calculated therefrom are used to determine a predicted-Z value for an unscanned region of the sample. The objective lens is adjusted to the predicted-Z value at the beginning of the unscanned region. After scanning the region, a true-Z value is determined for the region and compared to the predicted-Z value. A rescan of the region is initiated if the comparison exceeds a predetermined threshold.
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