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公开(公告)号：US20180143321A1
公开(公告)日：2018-05-24
申请号：US15359537
申请日：2016-11-22
申请人： 4Sense, Inc.
CPC分类号： G01S17/66 , G01S15/104 , G01S15/89 , G01S17/023 , G01S17/36 , G01S17/42 , G01S17/89
摘要： A passive-tracking system for passively tracking a living being is described herein. The system can include a ToF sensor that emits modulated light in a monitoring area and receives reflections of the light from a first object in the area. The ToF sensor can also generate modulated-light frames based on the reflections of light from the first object. The system also includes a processor communicatively coupled to the ToF sensor. The processor receives the modulated-light frames from the ToF sensor and, based on data of the modulated-light frames, determines that the first object is a living being. The processor further determines an X, Y, and Z position of the first object with respect to the system, which produces a three-dimensional (3D) position of the first object. The processor also passively tracks the first object in the monitoring area over time by periodically updating the 3D position of the first object.
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公开(公告)号：US20180143318A1
公开(公告)日：2018-05-24
申请号：US15646984
申请日：2017-07-11
申请人： 4Sense, Inc.
CPC分类号： G01S17/023 , G01S3/7864 , G01S3/802 , G01S15/025 , G01S15/42 , G01S17/89 , G08B17/00 , G08B21/0261 , G08B29/188
摘要： A passive-tracking system is described herein. The system can include a visible-light sensor, a sound transducer, a thermal sensor, a time-of-flight (ToF) sensor, and a processor. The processor can receive visible-light frames from the visible-light sensor, sound frames from the sound transducer, thermal frames from the thermal sensor, and modulated-light frames from the ToF sensor. The processor, based on data of the visible-light and temperature frames, can also determine that an object is a living being and can provide an X and Y position of the object. The processor, based on data of the sound and positioning frames, can determine a Z position of the object. The X, Y, and Z positions may combine to form a three-dimensional (3D) position of the object. The processor can also passively track the object over time by selectively updating the 3D position of the object.
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公开(公告)号：US09921309B1
公开(公告)日：2018-03-20
申请号：US15729659
申请日：2017-10-10
申请人： 4Sense, Inc.
CPC分类号： G01S17/023 , G01S7/4802 , G01S15/025 , G01S15/42 , G01S15/66 , G01S17/42 , G01S17/66
摘要： A passive-tracking system for passively tracking a living being is described herein. The system can include a visible-light sensor to generate visible-light frames based on visible light reflected off an object and a sound transducer to generate sound frames based on sound reflected off the object. The system can also include a processor that can receive the visible-light and sound frames and based on data of these frames, generate a novelty representation of the object through a merging of the data of the frames. Based on the data of the visible-light and sound frames, the processor can determine the object is a living being, and when the processor does, it can generate, based on the novelty representation, a 3D position of the living-being object and can passively track the living-being object over time by, based on the novelty representation, selectively updating the 3D position of the living-being object.
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公开(公告)号：US20190096045A1
公开(公告)日：2019-03-28
申请号：US15718805
申请日：2017-09-28
申请人： 4Sense, Inc.
发明人： Hai-Wen Chen
摘要： A system for increasing granularity in one or more images of a dataset is described herein. The system can include a communication circuit configured to access an image of the dataset, and the image may include a full-body segmentation of an object that is part of the image. The system can also include a processor communicatively coupled to the communications interface. The processor can be configured to receive the image from the communications interface, estimate one or more spectral angles from pixels corresponding to the full-body segmentation, and compare the estimated spectral angles with spectral angles extracted from the full-body segmentation. The processor can also be configured to, based on the comparison of the estimated spectral angles with the extracted spectral angles, segment out one or more body parts from the full-body segmentation.
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公开(公告)号：US09824570B1
公开(公告)日：2017-11-21
申请号：US15583953
申请日：2017-05-01
申请人： 4Sense, Inc.
IPC分类号： G01N21/00 , G08B21/18 , G08B21/04 , G01S17/87 , G01S15/66 , G01S17/66 , G01S17/42 , G01S15/42
CPC分类号： G08B21/182 , G01B11/002 , G01S15/025 , G01S15/06 , G01S15/42 , G01S15/66 , G01S17/023 , G01S17/06 , G01S17/42 , G01S17/66 , G01S17/87 , G08B21/0469 , G08B21/0492
摘要： A passive-tracking system is described herein. The system can include a visible-light sensor, a sound transducer, a thermal sensor, a time-of-flight (ToF) sensor, and a processor. The processor can receive visible-light frames from the visible-light sensor, sound frames from the sound transducer, thermal frames from the thermal sensor, and modulated-light frames from the ToF sensor. The processor, based on data of the visible-light and temperature frames, can also determine that an object is a living being and can provide an X and Y position of the object. The processor, based on data of the sound and positioning frames, can determine a Z position of the object. The X, Y, and Z positions may combine to form a three-dimensional (3D) position of the object. The processor can also passively track the object over time by selectively updating the 3D position of the object.
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公开(公告)号：US09720086B1
公开(公告)日：2017-08-01
申请号：US15359485
申请日：2016-11-22
申请人： 4Sense, Inc.
CPC分类号： G01S17/023 , G01S3/7864 , G01S3/802 , G01S15/025 , G01S15/42 , G01S17/89 , G08B17/00 , G08B21/0261 , G08B29/188
摘要： A passive-tracking system is described herein. In one example, the passive-tracking system includes a thermal sensor configured to generate a series of thermal frames based on an object in a monitoring area. In this example, the system also includes a processor and a time-of-flight (ToF) sensor configured to generate a series of modulated-light frames based on the object. The processor may be configured to receive the thermal and modulated-light frames and based at least in part on the data of the frames, generate a novelty representation of the object. Based on this data, the processor may also be configured to determine whether the object is human and if so, generate a three-dimensional (3D) position of the human object. The processor may also be configured to passively track the human object over time by, based on the novelty representation, selectively updating the 3D position of the human object.
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公开(公告)号：US20190096066A1
公开(公告)日：2019-03-28
申请号：US15718777
申请日：2017-09-28
申请人： 4Sense, Inc.
发明人： Hai-Wen Chen
摘要： A system for segmenting out multiple body parts of an image is described herein. The system can include an image-sensor circuit configured to generate a frame of a monitoring area that includes data associated with a human target in the monitoring area. The system can also include a processor communicatively coupled to the image-sensor circuit. The processor can be configured to receive the frame from the image-sensor circuit and compare spectral angles extracted from the frame with multiple reference spectral angles corresponding to different body parts associated with the human target. The processor can also be configured to segment out multiple body parts associated with the human target based on the comparison of the spectral angles extracted from the frame with the reference spectral angles.
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公开(公告)号：US20190018106A1
公开(公告)日：2019-01-17
申请号：US15646969
申请日：2017-07-11
申请人： 4Sense, Inc.
摘要： A system and method for reducing the effects of multipath propagation (MPP) arising from the operation of a time-of-flight (ToF) sensor are described. The ToF sensor can include light sources that emit modulated light in a monitoring area, which may be partitioned into a number of segments. The light sources may correspond to the segments. Tracking data of an object in the area can be analyzed to determine which segments are occupied by the object. The light sources corresponding to segments occupied by the object can be activated, and the light sources corresponding to segments unoccupied by the object can be deactivated. Modulated light may be emitted from only the activated light sources. Reflections of the modulated light from the object can be received and based on the received reflections, a depth distance of the object with respect to the ToF sensor can be provided.
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公开(公告)号：US09638800B1
公开(公告)日：2017-05-02
申请号：US15359525
申请日：2016-11-22
申请人： 4Sense, Inc.
IPC分类号： G01N21/00 , G01S17/87 , G01B11/00 , G01S17/06 , G01J5/00 , G01S15/66 , G01S15/06 , G01S17/66
CPC分类号： G08B21/182 , G01B11/002 , G01S15/025 , G01S15/06 , G01S15/42 , G01S15/66 , G01S17/023 , G01S17/06 , G01S17/42 , G01S17/66 , G01S17/87 , G08B21/0469 , G08B21/0492
摘要： A passive-tracking system is described herein. The system can include a visible-light sensor, a sound transducer, a thermal sensor, a time-of-flight (ToF) sensor, and a processor. The processor can receive visible-light frames from the visible-light sensor, sound frames from the sound transducer, thermal frames from the thermal sensor, and modulated-light frames from the ToF sensor. The processor, based on data of the visible-light and temperature frames, can also determine that an object is a living being and can provide an X and Y position of the object. The processor, based on data of the sound and positioning frames, can determine a Z position of the object. The X, Y, and Z positions may combine to form a three-dimensional (3D) position of the object. The processor can also passively track the object over time by selectively updating the 3D position of the object.
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公开(公告)号：US20190026547A1
公开(公告)日：2019-01-24
申请号：US15655019
申请日：2017-07-20
申请人： 4Sense, Inc.
发明人： Hai-Wen Chen
IPC分类号： G06K9/00
摘要： A camera for detecting human skin is described herein. The camera can include a processor and an image-sensor circuit, which can be configured to generate a frame of a monitoring area that can include data associated with multiple human targets in the monitoring area. The processor can be configured to receive the frame from the image-sensor circuit, compare spectral angles related to the human targets and extracted from the frame with a single skin-reference spectral angle, and based on the comparison of the spectral angles related to the human targets with the skin-reference spectral angle, segment out skin detections associated with the human targets.
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