HK1140993A1 - Image recognition device - Google Patents

Image recognition device

Info

Publication number
HK1140993A1
HK1140993A1 HK10107489.1A HK10107489A HK1140993A1 HK 1140993 A1 HK1140993 A1 HK 1140993A1 HK 10107489 A HK10107489 A HK 10107489A HK 1140993 A1 HK1140993 A1 HK 1140993A1
Authority
HK
Hong Kong
Prior art keywords
background
spatial
image recognition
detection
foreground
Prior art date
Application number
HK10107489.1A
Inventor
Masato Kazui
Masanori Miyoshi
Masahiro Chikara
Hironobu Fujiyoshi
Original Assignee
Hitachi Ltd
Hitachi Building Sys Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd, Hitachi Building Sys Co Ltd filed Critical Hitachi Ltd
Publication of HK1140993A1 publication Critical patent/HK1140993A1/en

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  • Image Analysis (AREA)
  • Escalators And Moving Walkways (AREA)

Abstract

The invention provides an image recognition device capable of improving accuracy of image recognition in detection of passengers on passenger delivery systems such escalator or moving sidewalk. The invention can represent and learn the structure and the movement of the dynamically moving background according to a gram matrix calculated from the spatial-temporal brightness gravity. Thereby, even if a brightness value similar to the background is inputted, the background and the foreground can be separated from the structural information. Moreover, even if the background is in the detection of the object in the dynamically changing scene, human or object can be detected because of the modulation of the background movement. Furthermore, accuracy of abnormal operation detection or operation type recognition can be improved by the detected human region. The model of the background is constructed as a mixed normal distribution model of the probability density of the components of the spatial characteristic vector of the gram matrix, and the existence of the foreground is determined when the spatial-temporal characteristic vector is not in normal distribution.
HK10107489.1A 2008-09-03 2010-08-05 Image recognition device HK1140993A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008226102A JP4792069B2 (en) 2008-09-03 2008-09-03 Image recognition device

Publications (1)

Publication Number Publication Date
HK1140993A1 true HK1140993A1 (en) 2010-10-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
HK10107489.1A HK1140993A1 (en) 2008-09-03 2010-08-05 Image recognition device

Country Status (3)

Country Link
JP (1) JP4792069B2 (en)
CN (1) CN101665210B (en)
HK (1) HK1140993A1 (en)

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CN107491717B (en) * 2016-06-13 2021-02-05 科大讯飞股份有限公司 Examination cheating detection method and device
JP6911859B2 (en) * 2016-07-14 2021-07-28 ソニーグループ株式会社 Image processing device and image processing method
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CN117864918A (en) 2016-07-29 2024-04-12 奥的斯电梯公司 Monitoring system for passenger conveyor, passenger conveyor and monitoring method thereof
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US10936912B2 (en) 2018-11-01 2021-03-02 International Business Machines Corporation Image classification using a mask image and neural networks
TWI696958B (en) * 2018-11-19 2020-06-21 國家中山科學研究院 Image adaptive feature extraction method and its application
CN110009650B (en) * 2018-12-20 2021-06-29 浙江新再灵科技股份有限公司 Escalator handrail boundary area border crossing detection method and system
CN109795942A (en) * 2019-01-17 2019-05-24 杭州海康睿和物联网技术有限公司 Staircase control system, staircase monitoring device and its intelligent control method
CN110482390A (en) * 2019-08-29 2019-11-22 南京市特种设备安全监督检验研究院 A kind of escalator/moving sidewalk angle personnel are strayed into monitoring identification early warning system and monitoring recognition methods
JP7445856B2 (en) * 2019-09-30 2024-03-08 パナソニックＩｐマネジメント株式会社 Object recognition device, object recognition system and object recognition method
CN111325188A (en) * 2020-03-24 2020-06-23 通力电梯有限公司 Method for monitoring escalator and device for monitoring escalator
CN112489055B (en) * 2020-11-30 2023-04-07 中南大学 Satellite video dynamic vehicle target extraction method fusing brightness-time sequence characteristics
CN112794197B (en) * 2020-12-28 2022-03-15 广州地铁设计研究院股份有限公司 Rail transit escalator control system and method
CN113205008B (en) * 2021-04-16 2023-11-17 深圳供电局有限公司 Alarm control method for dynamic alarm window
CN115797345B (en) * 2023-02-06 2023-04-25 青岛佳美洋食品有限公司 Seafood baking abnormality identification method

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Also Published As

Publication number Publication date
CN101665210A (en) 2010-03-10
CN101665210B (en) 2013-05-15
JP2010058903A (en) 2010-03-18
JP4792069B2 (en) 2011-10-12

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PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20170820