WO2014046419A1 - 보행자 모션 인식 기반 보행자 위치 추정 장치, 및 그 방법 - Google Patents
보행자 모션 인식 기반 보행자 위치 추정 장치, 및 그 방법 Download PDFInfo
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- WO2014046419A1 WO2014046419A1 PCT/KR2013/008250 KR2013008250W WO2014046419A1 WO 2014046419 A1 WO2014046419 A1 WO 2014046419A1 KR 2013008250 W KR2013008250 W KR 2013008250W WO 2014046419 A1 WO2014046419 A1 WO 2014046419A1
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- pedestrian
- user
- information
- estimation
- position estimation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
- G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C22/00—Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers, using pedometers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C22/00—Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers, using pedometers
- G01C22/006—Pedometers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C23/00—Combined instruments indicating more than one navigational value, e.g. for aircraft; Combined measuring devices for measuring two or more variables of movement, e.g. distance, speed or acceleration
Definitions
- the present invention relates to an apparatus for pedestrian position estimation through pedestrian motion recognition, and a method thereof, and more particularly, to an apparatus and method for improving pedestrian position estimation using pedestrian motion information based on pedestrian motion recognition using pattern recognition.
- coordinates of a point on a three-dimensional surface can be known using azimuth, elevation, and distance.
- An example is a radar tracking detection system.
- GPS Global Positioning System
- NAVSTAR navigation satellite timing and ranging
- mobile carriers eg Nate, Magic En
- advanced guided weapons eg Tomahawk missiles
- each GPS signal must be received from different satellites (at least three satellites).
- the GPS signal is not only weak in signal strength itself, but is also disturbed by special environments such as ionospheres, tunnels and overpasses in the atmosphere from satellites in space to the GPS receivers on the earth's surface. That is, the absolute coordinates (the three-dimensional position coordinates and the time) provided by the GPS signal have an error.
- LBS location based service
- the absolute coordinates are received from GPS satellites and the error is corrected for the location information by searching the multipath using the data stored in the server.
- D-Differential GPS a reference GPS receiver is installed at a specific place to correct an error of the position information of the moving GPS receiver by comparing the exact position of the reference GPS receiver and data of the moving GPS receiver.
- a moving GPS receiver (actually, a portable terminal equipped with it) cannot receive GPS signals such as underground parking garages, buildings, overpasses, tunnels, etc., or if only three satellites are received.
- GPS signals such as underground parking garages, buildings, overpasses, tunnels, etc.
- the absolute coordinates provided by the GPS signal have a problem that cannot provide accurate position information because the error range reaches several tens to hundreds of meters.
- GPS technology cannot be used in indoor navigation because GPS signals are not well received by the building walls.
- the pedestrian position estimation method using the MEMS type sensor module is basically a pedestrian dead-reckoning (PDR) technique, that is, a technique of continuously estimating the pedestrian position by estimating the pedestrian's steps, steps, and directions.
- PDR pedestrian dead-reckoning
- MEMS type sensor module is fixedly attached to the body part of pedestrian's head, leg, waist, etc.As a result, the axis of the sensor module is fixed so that noise due to the movement of pedestrians is small and the direction is also fixed. It is easy to do.
- this method has a disadvantage in that it is quite inconvenient because the sensor module is attached to the body and received and processed again through a specific device.
- the method that reflects this trend is a pedestrian location estimation method using a mobile device.
- the axis of the mobile device moves according to the motion of the pedestrian.
- pedestrians carry mobile devices in their hands or move them in their pockets, resulting in a lot of unnecessary noise.
- sensors embedded in mobile devices are inferior to MEMS type sensors.
- the present invention is to solve the problems of the prior art, to provide a pedestrian carrying a mobile device indoors in real time by estimating the position of the pedestrian regardless of the unspecific behavior pattern or motion of the pedestrian.
- An object of the present invention is to provide a pedestrian position estimation apparatus and a method using the pedestrian motion recognition.
- a pedestrian position estimation method the step of recognizing a specific motion of the plurality of motions of the pedestrian; Performing a unique pedestrian dead reckoning technique (PDR) corresponding to the recognized specific motion among the unique pedestrian dead reckoning techniques (PDR) for each of a plurality of motions; And estimating the position of the pedestrian by the performed unique pedestrian dead reckoning technique (PDR).
- PDR unique pedestrian dead reckoning technique
- Recognizing a specific motion among the various motions of the pedestrian is based on pattern recognition based on signals from sensors embedded in the user terminal.
- the plurality of motions of the pedestrian may include stopping, walking, running, answering a call and walking in a terminal pocket.
- the pattern recognition may be a cloud method or a terminal itself method using a server.
- PDR pedestrian dead reckoning technique
- a pedestrian position estimation apparatus including a program includes a plurality of unique pedestrian dead reckoning technology (PDR) algorithms corresponding to each of a plurality of motions of a pedestrian. According to the recognized specific motion among the plurality of motions, a specific unique pedestrian dead reckoning technique (PDR) corresponding thereto is performed.
- PDR pedestrian dead reckoning technology
- the present invention has the effect of accurately estimating the position of a pedestrian through a PDR enhancement method of accurately estimating the position of a pedestrian by performing each PDR according to a recognized motion using a motion recognition technique.
- FIG. 1 is a conceptual diagram of a pedestrian motion recognition technology according to the present invention.
- FIG. 2 is a conceptual diagram of data transmission for a pedestrian motion recognition technology according to the present invention.
- FIG. 3 is a conceptual diagram of performing PDR using pedestrian motion information according to the present invention.
- FIG. 5 is a block diagram showing a configuration of a position estimating apparatus according to an embodiment.
- FIG. 6 is a block diagram showing a configuration of a position estimation system according to an embodiment.
- FIG. 7 is a flowchart illustrating a position estimation process according to an embodiment.
- FIG. 8 is a view for explaining a process of calculating the number of steps of the user in the position estimation process according to an embodiment.
- FIG. 9 is a graph illustrating rotation information data used in a position estimation process according to an embodiment.
- the present invention largely consists of a method for recognizing a specific motion of a pedestrian using pattern recognition and estimating the position of the pedestrian by performing a pedestrian dead reckoning technique (PDR) according to each motion.
- PDR pedestrian dead reckoning technique
- Various motions occur when pedestrians carry and move mobile devices indoors. Examples of various motions may include stopping, walking, running, answering a call, walking a mobile device in a pocket, and the like.
- Recognition of a specific motion among these various motions uses pattern recognition. That is, since a specific signal pattern is generated based on the accumulated signal pattern for each motion, it corresponds to a specific motion. Accordingly, the specific motion of the pedestrian is recognized using pattern recognition (see FIG. 1).
- Such pattern recognition may be divided into a cloud method using a server and a method itself.
- sensor data due to a specific motion of a user is generated from various sensors embedded in a user terminal such as a mobile device.
- the generated data is transmitted to the server through the network so that the server recognizes the pattern and transmits the pattern recognition result back to the user terminal through the network.
- the specific motion of the pedestrian is recognized using the pattern recognition described above.
- FIG. 3 is a block diagram illustrating an advanced method of a pedestrian dead reckoning technique using pedestrian motion information.
- the pedestrian position estimation apparatus includes a plurality of (N) unique pedestrian dead reckoning (PDR) algorithms corresponding to each of a plurality of motions of a pedestrian, and according to a recognized specific motion among the plurality of motions of the pedestrian.
- PDR pedestrian dead reckoning
- each pedestrian dead reckoning technique proceeds in the order of step estimation, step estimation, and direction estimation, as shown in FIG. 4.
- the user terminal 100 for position estimation includes the communication unit 120, the vibration detection sensor 130, the rotation detection sensor 140, the movement distance measuring module 160, and the stride length estimation module 170. And a map information database 184.
- the vibration sensor 130 and the rotation sensor 140 detect vibrations generated when the user walks, generate vibration information, and detect rotational directions and walking angles to generate rotation information.
- an acceleration sensor may be used as the vibration sensor 130
- a digital compass, a gyroscope, etc. may be used as the rotation detection sensor 140, and various types of sensors for detecting a user's movement may be used. Of course it can.
- the movement distance measuring module 160 measures the movement distance actually walked by the user by matching the user's rotation information measured by the rotation sensor 140 and the geographic information stored in the map information database 184.
- the step counting module 170 calculates the number of steps the user walks using the moving distance measured by the moving distance measuring module 160 and the vibration information of the user measured by the vibration detecting sensor 130.
- the stride length estimation module 175 estimates the stride length of the user by using the movement distance of the user measured by the movement distance measuring module 160 and the number of steps of the user calculated by the number calculating module 170.
- the position estimation module (not shown) estimates the position of the pedestrian using the stride length estimated by the stride length estimation module 175 and the direction information of the user measured by the rotation sensor 140. .
- the user's stride length or position estimated through such a configuration may be transmitted to another terminal or communication company server through the communication unit 120 provided in the user terminal 100.
- the position estimating apparatus includes a moving distance measuring module 160, a step counting module 170, and a stride length estimating module 170 in the user terminal 100 to directly estimate a stride length of a user.
- the communication server server or stride length It may be configured as a system for estimating the stride of the user by transmitting to a separate server that provides a service for estimating.
- FIG. 6 is a block diagram illustrating a configuration of a position estimation system according to an exemplary embodiment.
- the position estimation system receives position information, vibration information, and rotation information measured by a user terminal 100 equipped with various sensors for detecting a user's walking or rotational direction.
- such a position estimation system includes a position estimation module (not shown) for estimating the position of the user using the str
- the user terminal 100 is a portable mobile device, such as a smartphone, a tablet PC, and the like, and is provided with a communication unit 120 for transmitting and receiving information with the server 200 for estimating the stride length.
- the user terminal 100 is provided with a vibration sensor 130 and the rotation sensor 140, when the user walks can detect the vibration generated when walking, and at the same time detect the walking direction.
- an acceleration sensor may be used as the vibration sensor 130
- a digital compass, a gyroscope, etc. may be used as the rotation detection sensor 140, and various types of sensors for detecting a user's movement may be used. Of course it can.
- the controller 150 transmits the walking information of the user detected through the vibration sensor 130 and the rotation sensor 140 to the communication unit 120 to transmit the information to the server 200 to the user terminal 100. Control overall operation.
- the database unit 250 of the server 200 that receives the user's location information and the motion information from the user terminal 100 and estimates the user's stride length may store personal information such as the user's name, age, and terminal information. And a user information database 252 and a map information database 254 for storing geographic information.
- User information database 252 stores stride information of a user estimated by the stride length estimation system according to the present invention. have.
- the movement distance measuring module 220 measures the movement distance actually walked by the user by matching the position information and rotation information of the user received through the communication module 210 with the geographic information stored in the map information database 254.
- the step counting module 230 calculates the number of steps the user walks using the vibration information of the user received through the communication module 210.
- the stride length estimation module 240 estimates the stride length of the user by using the movement distance of the user measured by the movement distance measuring module 220 and the number of steps calculated by the number calculating module 230.
- the server 200 uses the communication module 210 to display vibration information and rotation information measured through the vibration sensor 130 and the rotation sensor 140 provided in the user terminal 100. Receive (step S110).
- the vibration information and the rotation information received through the communication module 210 are transmitted to each module by the control unit 260, and each module calculates the moving distance, the number of steps and the stride length using the received information.
- the moving distance of the user may be measured in various ways, but as an example, the user may use rotation information transmitted through the user terminal 100 and geographic information stored in the map information database 254 of the database unit 250.
- the walking distance actually measured is measured (S120).
- the moving distance of the user may be measured by measuring the walking direction of the user through the rotation information and the actual moving distance of the user by the geographic information.
- Rotation information is information measured when a user turns a corner while walking, and is obtained by measuring a rotation value using a walking direction measured by a digital compass, a kind of electronic compass, and an angular velocity measured by a gyroscope, an angular velocity sensor. .
- the moving distance of the user is measured using the rotation information measured as an example.
- the user may use the measured rotation information as a singular point in a first moment of turning a specific corner and a second moment of turning a next corner, and this is a database.
- the actual moving distance of the user may be measured in correspondence with the geographic information stored in the unit 250.
- the number of steps of the user is calculated using the vibration information (S130).
- the number of steps of the user may be calculated from the vibration information received through the communication module 210, the number of steps calculation module 230 received the vibration information through the control unit 260 through the graph included in the vibration information Calculate the number of steps.
- the number of steps is calculated by using a form in which a peak or a phase appearing in a graph included in the vibration information is repeated.
- the vibration information is displayed in a graph form, and based on the output waveform of the graph form, the time between the maximum values of the output waveforms is recognized as one step, or The time between the minimum value of the output waveform is recognized as one step.
- the stride length ⁇ of the user is estimated using the calculated moving distance L and the number of steps m (S140).
- the stride length of the user ⁇ is the number of steps (m) of the user calculated by the step counting module 230 based on the moving distance L of the user measured by the moving distance measuring module 220 as shown in Equation 1 below. It is estimated by dividing by), and the calculated stride length of the user is referred to as stride length estimation because it means an average value at a moving distance.
- the stride length of the user may vary depending on the number of steps of the user. If the number of steps is the same in the same moving distance, the stride length becomes shorter, and if the number of steps is small, the stride length becomes longer. Through this, it is possible to determine the walking state of the user. If the stride length is short, the user may infer that he is walking quickly, and if the stride length is long, the user may guess that the user is running.
- the user's position can be tracked using the user's stride length, rotation information, and vibration information. If the user's position cannot be tracked by the GPS satellite, It is possible to easily track the user's location and travel path.
- the position estimation method described above by way of example, the method of estimating the stride length using the above-described stride length estimation system does not transmit the position information, the vibration information and the rotation information measured by the user terminal to the server, this is the user terminal
- the basic principle is the same except that the user's moving distance and the number of steps are calculated directly by themselves, and the stride length is estimated using the calculated moving distance and the number of steps and the geographic information stored in the user terminal.
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Description
Claims (19)
- 보행자 위치 추정 방법에 있어서,보행자의 복수의 모션들 중 특정 모션을 인식하는 단계;복수의 모션들 각각에 대한 고유 보행자 추측 항법 기술(PDR) 중 상기 인식된 특정 모션에 대응하는 고유 보행자 추측 항법 기술(PDR)을 수행하는 단계; 및상기 수행된 고유 보행자 추측 항법 기술(PDR)에 의해 보행자의 위치를 추정하는 단계;를 포함하여 이루어지는 보행자 모션 인식 기반 보행자 위치 추정 방법.
- 제 1 항에 있어서,상기 보행자의 다양한 모션들 중 특정 모션을 인식하는 단계는 사용자 단말에 내장된 센서들로부터의 신호에 기초한 패턴인식에 의하는 것을 특징으로 하는 보행자 모션 인식 기반 보행자 위치 추정 방법.
- 제 2 항에 있어서,상기 보행자의 복수의 모션들은 정지, 걷기, 뛰기, 전화받기 및 단말기 주머니에 넣고 걷기를 포함하는 것을 특징으로 하는 보행자 모션 인식 기반 보행자 위치 추정 방법.
- 제 2 항에 있어서,상기 패턴인식은 서버를 이용한 클라우드 방식 또는 단말 자체 방식인 것을 특징으로 하는 보행자 모션 인식 기반 보행자 위치 추정 방법.
- 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,상기 고유 보행자 추측 항법 기술(PDR)은 걸음수 추정, 보폭 추정 및 방향추정의 순서로 수행되는 것을 특징으로 하는 보행자 모션 인식 기반 보행자 위치 추정 방법.
- 제 5 항에 있어서,상기 보폭 추정은,사용자의 위치정보, 진동정보 및 회전정보를 획득하는 단계;상기 회전정보 및 지리정보를 이용하여 사용자의 이동 거리를 측정하는 단계;상기 진동정보를 이용하여 상기 사용자의 이동거리에 대응하는 사용자의 걸음수를 산출하는 단계; 및상기 측정된 사용자의 이동 거리와 상기 사용자의 걸음수를 이용하여 사용자의 보폭을 추정하는 단계;를 포함하여 구성되는 것을 특징으로 하는 보행자 모션 인식 기반 보행자 위치 추정 방법.
- 제 6 항에 있어서,상기 사용자의 이동 거리를 측정하는 단계에서,사용자가 특정 코너를 도는 제1순간과 그 다음 코너를 도는 제2순간 측정된 회전정보를 특이점으로 이용하여 지리정보로부터 사용자의 실제 이동 거리를 측정하는 것을 특징으로 하는 보행자 모션 인식 기반 보행자 위치 추정 방법.
- 제 6 항에 있어서,상기 진동정보에 포함되는 그래프 형태의 출력파형을 기초로 하여, 출력파형의 최대값 간의 시간을 하나의 걸음으로 인식하거나, 또는 출력파형의 최소값 간의 시간을 하나의 걸음으로 인식하는 것을 특징으로 하는 보행자 모션 인식 기반 보행자 위치 추정 방법.
- 제 6 항에 있어서,상기 사용자의 걸음수를 산출하는 단계는, 출력파형이 양의 값에서 음의 값으로 교차하는 점들 간의 시간을 하나의 걸음으로 인식하거나 또는 출력파형이 음의 값에서 양의 값으로 교차하는 점들 간의 시간을 하나의 걸음으로 인식하는 것을 특징으로 하는 보행자 모션 인식 기반 보행자 위치 추정 방법.
- 제 6 항에 있어서,상기 사용자의 보폭과 상기 회전정보를 이용하여 사용자의 위치를 추정하는 단계를 더 포함하는 것을 특징으로 하는 보행자 모션 인식 기반 보행자 위치 추정 방법.
- 제 6 항에 있어서,상기 사용자의 보폭을 추정하는 단계에서, 추정된 사용자의 상기 보폭의 형태는, 천천히 걷는 걸음의 보폭, 보통 걷는 걸음의 보폭, 빠른 걷는 걸음의 보폭, 뛰는 보폭 중 어느 하나 이상을 포함하여 이루어지는 것을 특징으로 하는 보폭 추정 방법.
- 프로그램을 포함하는 보행자 위치 추정 장치에 있어서,상기 프로그램은 보행자의 복수의 모션들 각각에 대응하는 복수의 고유 보행자 추측 항법 기술(PDR) 알고리즘을 포함하여 이루어지고,상기 보행자의 복수의 모션들 중 인식된 특정 모션에 따라, 이에 대응하는 특정 고유 보행자 추측 항법 기술(PDR)이 수행되는 것을 특징으로 하는 보행자 모션 인식 기반 보행자 위치 추정 장치.
- 제 12 항에 있어서,상기 보행자의 다양한 모션들 중 특정 모션에 대한 인식은 사용자 단말에 내장된 센서들로부터의 신호에 기초한 패턴인식에 의하는 것을 특징으로 하는 보행자 모션 인식 기반 보행자 위치 추정 장치.
- 제 13 항에 있어서,상기 보행자의 복수의 모션들은 정지, 걷기, 뛰기, 전화받기 및 단말기 주머니에 넣고 걷기를 포함하고, 이들 각각에 대한 고유 보행자 추측 항법 기술 알고리즘을 포함하는 것을 특징으로 하는 보행자 모션 인식 기반 보행자 위치 추정 장치.
- 제 13 항에 있어서,상기 패턴인식은 서버를 이용한 클라우드 방식 또는 단말 자체 방식인 것을 특징으로 하는 보행자 모션 인식 기반 보행자 위치 추정 장치.
- 제 12 항 내지 제 15 항 중 어느 한 항에 있어서,상기 고유 보행자 추측 항법 기술(PDR)은 걸음수 추정, 보폭 추정 및 방향추정의 순서로 수행되는 것을 특징으로 하는 보행자 모션 인식 기반 보행자 위치 추정 장치.
- 제 16 항에 있어서,상기 보폭 추정은,사용자의 보행으로부터 진동정보를 검출하는 진동감지센서와;상기 사용자의 보행으로부터 회전정보를 검출하는 회전감지센서와;지리정보를 저장하는 데이터베이스부와;상기 회전정보 및 상기 지리정보를 이용하여 사용자의 이동거리를 측정하는 이동거리 측정모듈과;상기 진동정보를 이용하여 사용자의 걸음수를 산출하는 걸음수 산출모듈과;상기 이동거리 측정모듈에서 측정된 사용자의 이동거리와 상기 걸음수 산출모듈에서 산출된 사용자의 걸음수를 이용하여 사용자의 보폭을 추정하는 보폭추정모듈; 및상기 데이터베이스부, 이동거리 측정모듈, 걸음수 산출모듈 및 보폭추정모듈의 동작을 제어하는 제어부;에 의하여 수행되는 것을 특징으로 하는 보행자 모션 인식 기반 보행자 위치 추정 장치.
- 제 17 항에 있어서,상기 보폭추정모듈에서 추정된 사용자의 보폭, 상기 진동정보 및 상기 회전정보를 이용하여 사용자의 위치를 추정하는 위치추정모듈을 더 포함하는 것을 특징으로 하는 보행자 모션 인식 기반 보행자 위치 추정 장치.
- 제 17 항에 있어서,상기 보폭추정모듈은, 상기 진동감지센서의 출력 파형의 형태에 따라 보폭의 형태를 분류하고, 분류된 보폭의 형태 별로 보폭을 추정하는 것을 특징으로 하는 보행자 모션 인식 기반 보행자 위치 추정 장치.
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| US14/429,162 US10557711B2 (en) | 2012-09-21 | 2013-09-12 | Apparatus for inferring pedestrian position based on pedestrian movement detection, and method therefor |
| JP2015532951A JP6054535B2 (ja) | 2012-09-21 | 2013-09-12 | 歩行者モーション認識基盤の歩行者位置推定装置、及びその方法 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120105371A KR101473653B1 (ko) | 2012-09-21 | 2012-09-21 | 보행자 모션 인식 기반 보행자 위치 추정 장치, 및 그 방법 |
| KR10-2012-0105371 | 2012-09-21 |
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| WO2014046419A1 true WO2014046419A1 (ko) | 2014-03-27 |
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| JP (1) | JP6054535B2 (ko) |
| KR (1) | KR101473653B1 (ko) |
| WO (1) | WO2014046419A1 (ko) |
Cited By (1)
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|---|---|---|---|---|
| JP2017516087A (ja) * | 2014-05-02 | 2017-06-15 | クアルコム,インコーポレイテッド | 動き方向の判定およびアプリケーション |
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| KR101773084B1 (ko) * | 2014-09-24 | 2017-08-31 | 주식회사 에이텍정보기술 | 하이브리드 기반의 공간위치 추적시스템 |
| KR20160099981A (ko) | 2015-02-13 | 2016-08-23 | 자동차부품연구원 | 패턴을 가지는 입체표식기를 이용한 복수 사용자를 포함하는 쌍방향 인식이 가능한 가상현실 장치 |
| KR102280780B1 (ko) * | 2015-03-06 | 2021-07-22 | 삼성전자주식회사 | 모션 센서의 측정 정확도를 향상시키기 위한 전자 장치 및 그 방법 |
| KR101707878B1 (ko) | 2015-09-09 | 2017-02-17 | 한국과학기술연구원 | 복수의 영상 및 보행자 추측 항법 기술을 이용한 사용자 위치 추정 장치 및 그 방법 |
| KR102024560B1 (ko) | 2016-12-13 | 2019-09-24 | 한국전자통신연구원 | 재난 환경에서 구조를 지원하기 위한 정보 제공 방법 및 장치 |
| KR102825506B1 (ko) | 2019-01-23 | 2025-06-27 | 삼성전자주식회사 | 전자 장치 및 그 제어 방법 |
| KR101991703B1 (ko) * | 2019-04-02 | 2019-06-21 | 엘아이지넥스원 주식회사 | 보행자 위치추적시스템 및 방법 |
| TW202102392A (zh) * | 2019-07-02 | 2021-01-16 | 帷享科技股份有限公司 | 提高判斷精度及提早預警之行車安全輔助系統與方法 |
| JP2021081339A (ja) * | 2019-11-20 | 2021-05-27 | ヤフー株式会社 | 情報処理装置、情報処理方法、および情報処理プログラム |
| KR102572895B1 (ko) * | 2021-01-26 | 2023-08-31 | 숭실대학교 산학협력단 | 스마트폰의 다중 센서 및 gps 위치신호를 이용한 딥러닝 기반의 pdr 측위 장치 및 그 방법 |
| KR102489919B1 (ko) | 2022-06-03 | 2023-01-18 | 주식회사 원지랩스 | 보행 분석 방법 및 시스템 |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR101473653B1 (ko) | 2014-12-18 |
| KR20140039422A (ko) | 2014-04-02 |
| JP6054535B2 (ja) | 2016-12-27 |
| US10557711B2 (en) | 2020-02-11 |
| JP2015534643A (ja) | 2015-12-03 |
| US20150308831A1 (en) | 2015-10-29 |
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