WO2008147724A3 - Methods, systems and apparatuses for motion detection using auto-focus statistics - Google Patents

Methods, systems and apparatuses for motion detection using auto-focus statistics Download PDF

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Publication number
WO2008147724A3
WO2008147724A3 PCT/US2008/063844 US2008063844W WO2008147724A3 WO 2008147724 A3 WO2008147724 A3 WO 2008147724A3 US 2008063844 W US2008063844 W US 2008063844W WO 2008147724 A3 WO2008147724 A3 WO 2008147724A3
Authority
WO
WIPO (PCT)
Prior art keywords
motion
apparatuses
systems
methods
threshold
Prior art date
Application number
PCT/US2008/063844
Other languages
French (fr)
Other versions
WO2008147724A2 (en
Inventor
Igor Subbotin
Alexander Mokhnatyuk
Original Assignee
Micron Technology Inc
Igor Subbotin
Alexander Mokhnatyuk
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 Micron Technology Inc, Igor Subbotin, Alexander Mokhnatyuk filed Critical Micron Technology Inc
Priority to CN200880017362.4A priority Critical patent/CN101690160B/en
Publication of WO2008147724A2 publication Critical patent/WO2008147724A2/en
Publication of WO2008147724A3 publication Critical patent/WO2008147724A3/en
Priority to GB0922105A priority patent/GB2462571A/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/20—Analysis of motion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H04N23/681—Motion detection
    • H04N23/6811—Motion detection based on the image signal

Abstract

Methods, systems and apparatuses for the detection of motion using statistics data already available within an imager, such as sharpness scores or brightness values. The method includes obtaining at least two sets of statistics data for respective image frames which include corresponding windows; initializing a motion counter; determining, for each window, a relative difference value for the particular window; comparing the relative difference value to a first threshold. If the relative difference value is greater than the first threshold, the method increments the motion counter; and determines if there is motion by comparing the value of the motion counter to a second threshold. The motion detection may further take into account the relative importance of certain areas of the image frame.
PCT/US2008/063844 2007-05-24 2008-05-16 Methods, systems and apparatuses for motion detection using auto-focus statistics WO2008147724A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN200880017362.4A CN101690160B (en) 2007-05-24 2008-05-16 Methods, systems and apparatuses for motion detection using auto-focus statistics
GB0922105A GB2462571A (en) 2007-05-24 2009-12-17 Methods, systems and apparatuses for motion detection using auto-focus statistics

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/802,728 US8233094B2 (en) 2007-05-24 2007-05-24 Methods, systems and apparatuses for motion detection using auto-focus statistics
US11/802,728 2007-05-24

Publications (2)

Publication Number Publication Date
WO2008147724A2 WO2008147724A2 (en) 2008-12-04
WO2008147724A3 true WO2008147724A3 (en) 2009-02-19

Family

ID=39876597

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/063844 WO2008147724A2 (en) 2007-05-24 2008-05-16 Methods, systems and apparatuses for motion detection using auto-focus statistics

Country Status (5)

Country Link
US (1) US8233094B2 (en)
CN (1) CN101690160B (en)
GB (1) GB2462571A (en)
TW (1) TW200906174A (en)
WO (1) WO2008147724A2 (en)

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US9161058B2 (en) * 2010-03-27 2015-10-13 Texas Instruments Incorporated Method and system for detecting global brightness change for weighted prediction in video encoding
US20120287031A1 (en) * 2011-05-12 2012-11-15 Apple Inc. Presence sensing
US8594488B1 (en) * 2012-03-13 2013-11-26 Google Inc. Methods and systems for video retargeting using motion saliency
JP6191160B2 (en) * 2012-07-12 2017-09-06 ノーリツプレシジョン株式会社 Image processing program and image processing apparatus
US9154686B2 (en) * 2013-09-25 2015-10-06 Google Technology Holdings LLC Close focus with GPU
US10187579B1 (en) * 2017-06-30 2019-01-22 Polycom, Inc. People detection method for auto-framing and tracking in a video conference
US10817594B2 (en) 2017-09-28 2020-10-27 Apple Inc. Wearable electronic device having a light field camera usable to perform bioauthentication from a dorsal side of a forearm near a wrist
CN114363448A (en) * 2020-09-29 2022-04-15 北京小米移动软件有限公司 Brightness control method and device for small screen window, terminal and storage medium

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Also Published As

Publication number Publication date
CN101690160A (en) 2010-03-31
GB2462571A (en) 2010-02-17
WO2008147724A2 (en) 2008-12-04
GB0922105D0 (en) 2010-02-03
CN101690160B (en) 2013-02-06
US8233094B2 (en) 2012-07-31
TW200906174A (en) 2009-02-01
US20080291333A1 (en) 2008-11-27

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