WO2012001756A1 - プレ録画データ保存装置及びプレ録画データ保存方法 - Google Patents

プレ録画データ保存装置及びプレ録画データ保存方法 Download PDF

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Publication number
WO2012001756A1
WO2012001756A1 PCT/JP2010/007582 JP2010007582W WO2012001756A1 WO 2012001756 A1 WO2012001756 A1 WO 2012001756A1 JP 2010007582 W JP2010007582 W JP 2010007582W WO 2012001756 A1 WO2012001756 A1 WO 2012001756A1
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WIPO (PCT)
Prior art keywords
face
person
recording
time
matching
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
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PCT/JP2010/007582
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English (en)
French (fr)
Japanese (ja)
Inventor
和久 續
貴行 原口
堅太郎 大川
憲一郎 杉本
貴宏 山口
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Panasonic Corp
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Panasonic Corp
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Filing date
Publication date
Application filed by Panasonic Corp filed Critical Panasonic Corp
Priority to US13/806,921 priority Critical patent/US8942435B2/en
Publication of WO2012001756A1 publication Critical patent/WO2012001756A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/16—Human faces, e.g. facial parts, sketches or expressions
    • G06V40/161—Detection; Localisation; Normalisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H04N5/77—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements
    • G06V20/50—Context or environment of the image
    • G06V20/52—Surveillance or monitoring of activities, e.g. for recognising suspicious objects
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/16—Human faces, e.g. facial parts, sketches or expressions

Definitions

  • the present invention relates to a pre-recorded data storage device and a pre-recorded data storage method suitable for use in a surveillance system for crime prevention monitoring.
  • Patent Document 1 “Image storage device, monitoring system, storage medium”). ").
  • the face of a person obtained by photographing may match with face information registered in advance.
  • Patent Document 1 “when the number of areas determined to be skin color in an input frame image exceeds a predetermined value” is one trigger for starting recording.
  • the present invention has been made in view of such circumstances, and pre-recording that can reliably record the behavior of a person to be collated even when face collation processing takes time, such as when collating a plurality of faces.
  • An object is to provide a data storage device and a pre-recorded data storage method.
  • the pre-recorded data storage device of the present invention includes a first recording unit, a second recording unit having a larger capacity than the first recording unit, and the person detected from an image obtained by photographing a person.
  • the pre-recording is terminated at the matching match time when the face matching processing is executed and matched by the face matching processing execution means, and pre-recorded data from the face detection time to the matching match time is stored in the second recording means.
  • a video recording control means for storing the data.
  • the face matching process is executed. Further, pre-recording of the person's video is started with respect to the first recording means from the face detection time, and when the matching is matched, the pre-recording is terminated at the matching matching time.
  • the pre-recording data is stored in the second recording means. Therefore, even when the face matching process takes time, the behavior of the person being verified during the matching period can be recorded.
  • pre-recording of a person whose face is detected and matched is played back, so that it is not difficult to know which face is the target of matching.
  • face detection time storage means for storing the face detection time
  • the recording control means saves pre-recorded data from the face detection time to the collation match time in the second recording means.
  • the face detection time stored in the face detection time storage means is used as the index time of the pre-recorded data.
  • the face detection time stored in the face detection time storage unit is used as the pre-recording data index time. Therefore, it is possible to immediately reproduce the recorded video of the target person.
  • the pre-recorded data storage method of the present invention includes a face matching process executing step for executing face matching processing on the face of the person detected from an image obtained by photographing a person, and detecting the face of the person.
  • the first recording means starts pre-recording of the person's video from the detected face detection time, and the pre-recording is performed at the matching match time when the face matching processing is executed and matched in the face matching processing execution step.
  • the face matching process is executed. Further, pre-recording of the person's video is started with respect to the first recording means from the face detection time, and when the matching is matched, the pre-recording is terminated at the matching matching time.
  • the pre-recording data is stored in the second recording means. Therefore, even when the face matching process takes time, the behavior of the person being verified during the matching period can be recorded.
  • pre-recording of a person whose face is detected and matched is played back, so that it is not difficult to know which face is the target of matching.
  • the pre-recorded data storage program of the present invention is for causing a computer to execute each step of the pre-recorded data storing method.
  • the face matching process is executed. Further, pre-recording of the person's video is started with respect to the first recording means from the face detection time, and when the matching is matched, the pre-recording is terminated at the matching matching time.
  • the pre-recording data is stored in the second recording means. Therefore, even when the face matching process takes time, the behavior of the person being verified during the matching period can be recorded.
  • pre-recording of a person whose face is detected and matched is played back, so that it is not difficult to know which face is the target of matching.
  • the present invention it is possible to record the behavior of the person to be collated even when the face collation process takes time, such as when collating a plurality of faces.
  • pre-recording of a person whose face is detected and matched is played back, so that it is not difficult to know which face is the target of matching.
  • the block diagram which shows schematic structure of the pre-recording data storage apparatus which concerns on one embodiment of this invention The figure which shows the outline
  • FIG. 1 is a block diagram showing a schematic configuration of a pre-recorded data storage device according to an embodiment of the present invention.
  • the pre-recorded data storage device 1 of the present embodiment includes a face detection unit 10, a face collation unit 11, a timer unit 12, a first memory 13, a hard disk (HDD) 14, a second The memory 15, the calculation unit 16, the memory control unit 17, and the image decoding unit 18 are provided.
  • the face detection unit 10 outputs an image obtained by photographing a person with the camera 2 and detects the face of the person from the image. Further, the face detection unit 10 acquires the time when the face of the person is detected (hereinafter referred to as “face detection time”) from the timer unit 12.
  • face detection time the time when the face of the person is detected
  • the face collation unit 11 stores a plurality of pieces of face information registered by the user (monitor), collates each of the plurality of registered face information with the face of the person detected by the face detection unit 10, and matches them. When the face information is found, the time at that time (hereinafter referred to as “matching match time”) is acquired from the timer unit 12.
  • the face collation unit 11 performs the above process every time a face is detected by the face detection unit 10.
  • the timer unit 12 outputs current time information.
  • the calculation unit 16 stores the “face detection time information” and the “matching match time information” in the second memory 15 for each face matching with the registered face information.
  • the first memory 13 and the second memory 15 are preferably a non-volatile semiconductor memory (for example, a flash memory) that can rewrite data and does not lose data even when the power is turned off.
  • the memory control unit 17 starts pre-recording in which the video output from the face detection unit 10 is recorded in the first memory 13.
  • the memory control unit 17 ends the pre-recording for recording the video output from the face detecting unit 10 in the first memory 13.
  • the memory control unit 17 stores the pre-recorded data recorded in the first memory 13 in the hard disk 14. At this time, the memory control unit 17 uses the face detection time as the index time of the pre-recorded data, and also stores this index time in the hard disk 14.
  • the image decoding unit 18 decodes the video output from the face detection unit 10 and outputs a video signal.
  • the display unit 3 receives the video signal from the image decoding unit 18 and displays the video.
  • FIG. 2 is a diagram showing an outline of the pre-recording process when the face A of one person 100 is detected.
  • the face detection time when the face detection unit 10 detects the face A of the person 100 is T1.
  • the collation match time when the face collation unit 11 completes collation with the face A of the person 100 and collation coincides is T2.
  • the memory control unit 17 starts pre-recording in which the video of the person 100 is recorded in the first memory 13 from the face detection time T1.
  • the memory control unit 17 sets the start time of the pre-recorded data stored in the hard disk 14 as the face detection time T1 of the person 100.
  • the pre-recording of the person 100 is reproduced when searching at the time T1. That is, the target video of the person 100 is started to be reproduced. If you look at the playback image, you can guess that the person who entered the screen at the edge of the screen is the person to be collated, which makes it difficult to know which face to collate at the time of playback Disappear.
  • FIG. 3 is a diagram showing an outline of the pre-recording process when the two persons 100 and 110 are detected (1).
  • the face B of the person 110 is detected until the face A of the person 100 is detected and the collation with respect to the face A is completed. is there.
  • the face detection time when the face detection unit 10 detects the face A of the person 100 is T1.
  • the face detection time when the face detection unit 10 detects the face B of the person 110 is T2.
  • the collation match time is T3.
  • the matching time when the face matching unit 11 completes matching with the face B of the person 110 and matches is T4.
  • the face matching unit 11 starts matching the face A of the person 100 from the face detection time T1.
  • the memory control unit 17 starts pre-recording for recording the video of the face A of the person 100 in the first memory 13 from the face detection time T1.
  • the memory control unit 17 ends the pre-recording of the video of the person 100 and the pre-recording, that is, the recorded data recorded in the first memory 13 ( Recorded data from the face detection time T1 to the matching match time T3) is stored in the hard disk 14.
  • the memory control unit 17 sets the start time of the pre-recorded data stored in the hard disk 14 as the face detection time T1 of the person 100.
  • the matching match time T3 is after time T2 when the face matching unit 11 starts matching the face B of the person 110, and the memory control unit 17 records the video of the person 110 in the first memory 13 from the time T3.
  • Start pre-recording When the collation with respect to the face B of the person 110 is completed and the collation is matched, the memory control unit 17 finishes the pre-recording of the image of the person 110, and the pre-recording, that is, the recorded data recorded in the first memory 13 ( Recording data from time T3 to collation match time T4) is stored in the hard disk 14. At this time, the memory control unit 17 sets the start time of the pre-recorded data stored in the hard disk 14 as the face detection time T2 of the person 110.
  • the pre-recording of the person 100 is reproduced when searching at the time T1.
  • the pre-recording of the person 110 is reproduced when searching at the time T2. In this way, the video of the intended persons 100 and 110 is started to be reproduced. As a result, it is not difficult to know which face is the target of collation during playback.
  • FIG. 4 is a diagram showing an outline of the pre-recording process when the two persons 100 and 110 are detected (2). As shown in the figure, in the case of (No. 2), the detection of the face B of the person 110 and the face B between the detection of the face A of the person 100 and the completion of the matching with the face A are performed. This is a case where collation is performed.
  • the face detection time when the face detection unit 10 detects the face A of the person 100 is T1.
  • the face detection time when the face detection unit 10 detects the face B of the person 110 is T2.
  • the collation match time is T3.
  • the collation matching time when the face collation unit 11 completes collation with respect to the face A of the person 100 and collation coincides is T4.
  • the face matching unit 11 starts matching the face A of the person 100 from the face detection time T1.
  • the memory control unit 17 starts pre-recording in which the video of the person 100 is recorded in the first memory 13 from the face detection time T1.
  • the face matching unit 11 starts matching the face B of the person 110 from the face detection time T2.
  • collation with respect to face B of person 110 is completed at time T3.
  • collation for the face A of the person 100 is completed at time T4.
  • the memory control unit 17 ends the pre-recording at time T4, and saves the pre-recording, that is, the recording data recorded in the first memory 13 (recording data from the face detection time T1 to the matching match time T4) in the hard disk 14. .
  • the memory control unit 17 sets the start time of the pre-recorded data stored in the hard disk 14 as the face detection time T1 of the person 100. Since the pre-recorded data includes the recording of the person 110, the behavior of the person 110 can be grasped by reproducing.
  • the pre-recording of the person 100 is reproduced when searching at the time T1.
  • an image of the person 110 is also included during the pre-recording of the person 100.
  • the video of the intended persons 100 and 110 is started to be reproduced.
  • FIG. 5 is a diagram showing an outline of the pre-recording process when the two persons 100 and 110 are detected (3).
  • the detection of the face B of the person 110 and the face B between the detection of the face A of the person 100 and the completion of the matching with the face A are performed. This is a case where the collation with respect to the face A is completed and the collation with respect to the face A does not match.
  • the face detection time when the face detection unit 10 detects the face A of the person 100 is T1.
  • the face detection time when the face detection unit 10 detects the face B of the person 110 is T2.
  • the collation match time is T3.
  • the collation mismatch time when the face collation unit 11 completes collation with the face A of the person 100 and the collation does not match is T4.
  • the face matching unit 11 starts matching the face A of the person 100 from the face detection time T1.
  • the memory control unit 17 starts pre-recording in which the video of the person 100 is recorded in the first memory 13 from the face detection time T1.
  • the face collation unit 11 starts collation of the face B of the person 110 from the face detection time T2. Thereafter, the collation with respect to the face B of the person 110 is completed at time T3, and the collation with respect to the face A of the person 100 is completed at time T4.
  • the memory control unit 17 ends the pre-recording at time T4, but the pre-recording, that is, the first memory 13 Of the recorded data recorded in the above, only the recorded data from the face detection time T2 of the face B of the person 110 to the matching match time T3 is stored in the hard disk 14. At this time, the memory control unit 17 sets the start time of the pre-recorded data stored in the hard disk 14 as the face detection time T2 of the person 110.
  • the pre-recording of the person 110 is reproduced when searching at the time T2.
  • the target video of the person 110 is started to be reproduced.
  • FIG. 6 is a flowchart for explaining the face detection process of the pre-record data storage device 1 of the present embodiment.
  • This face detection process is performed by the face detection unit 10.
  • the face detection unit 10 has a count function for counting face numbers, and has a processing flag for face numbers.
  • step S1 the face number is set to “1” (step S1), and then face detection processing for detecting a human face from the video from the camera 2 is performed (step S2). Then, it is determined whether or not a new face has been detected in the face detection process (step S3). If a new face is not detected, the face detection process in step S2 is repeated until a new face is detected. On the other hand, when a new face is detected, the current time is acquired from the timer unit 12, and this time is recorded in the second memory 15 as “face detection time information” of the corresponding face number (step S4).
  • FIG. 7 is a flowchart for explaining the face collation processing of the pre-record data storage device 1 of the present embodiment.
  • the face matching process is performed by integrating the face matching unit 11, the calculation unit 16, and the memory control unit 17.
  • the face collation unit 11 has processing flags (“recording wait”, “no processing”) for the face number.
  • step S34 if it is determined in step S34 that the face number is smaller than the matched face number and there is no processing flag “waiting for collation”, the pre-recorded data recorded in the first memory 13 is stored in the hard disk 14 (step S35).
  • the pre-recorded data storage period is from the oldest “face detection time information” to the latest “matching match time information” among the face numbers for which the processing flag is set to “recording wait”.
  • the “face detection time information” of the face number of the recorded face is stored in the hard disk 14 as the pre-recording start time (step S36).
  • the video from the camera 2 is stored in the hard disk 14 for a preset time (for example, 10 seconds).
  • step S40 it is determined whether or not there is a processing flag “waiting for collation” among the face numbers 1 to n (step S39). If there is a processing flag “waiting for collation” among the face numbers 1 to n, the process returns to step S30 to perform face collation processing again. On the other hand, if there is no processing flag “waiting for collation” among the face numbers 1 to n, it is determined whether or not there is a processing flag “waiting for recording” among the face numbers 1 to n (step S40).
  • step S 35 If there is a processing flag “waiting for recording” among the face numbers 1 to n, the process proceeds to step S 35, and the pre-recorded data recorded in the first memory 13 is stored in the hard disk 14. On the other hand, if there is no processing flag “waiting for recording” among the face numbers 1 to n, the pre-recorded data is not stored in the hard disk 14. Further, the face number is set to 1 (step S41), and this process is finished.
  • the face detection unit 10 that detects the face of a person from the video obtained by photographing the person with the camera 2 and the face detection unit 10 detect the face.
  • a face collation unit 11 that performs face collation processing on the face of the person and a face detection time at which the face detection unit 10 detected the person's face to the first memory 13 for pre-recording the person's video.
  • a memory control unit that starts and finishes pre-recording at the matching match time when the face matching process is executed by the face matching unit 11 and stores the pre-recorded data from the face detection time to the matching match time in the hard disk 14 17, the behavior of the person being verified during the verification period can be recorded even when the face verification process takes time.
  • pre-recording of a person whose face is detected and matched is played back, so that it is not difficult to know which face is the target of matching.
  • the second memory 15 is provided for storing the face detection time.
  • the memory control unit 17 saves the pre-recorded data from the person face detection time to the matching match time in the hard disk 14, the second memory 15 is provided. Since the face detection time stored in is used as the index time of the pre-record data, the recorded video of the target person can be reproduced immediately.
  • the face detection unit 10 is provided in the pre-recorded data storage device 1, but a face detection unit may be provided in the camera 2.
  • face detection time information is transmitted from the camera 2 to the pre-record data storage device 1.
  • a computer having a CPU (Central Processing Unit), a volatile memory such as a RAM, a non-volatile memory such as a ROM, and an interface is used. can do.
  • the functions of the face detection unit 10, the face collation unit 11, the timer unit 12, the calculation unit 16, and the memory control unit 17 according to the embodiment can be realized by causing the CPU to execute a program describing these functions.
  • This program can also be stored and distributed in a storage medium such as a magnetic disk, hard disk, optical disk, magneto-optical disk, or semiconductor memory.
  • the present invention has an effect that it is possible to reliably record the behavior of a person to be verified even when face matching processing takes a long time, such as when collating a plurality of faces, and to a surveillance system for crime prevention monitoring. Can be applied.

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  • Engineering & Computer Science (AREA)
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  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
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PCT/JP2010/007582 2010-06-30 2010-12-27 プレ録画データ保存装置及びプレ録画データ保存方法 Ceased WO2012001756A1 (ja)

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US13/806,921 US8942435B2 (en) 2010-06-30 2010-12-27 Pre-record data storage device and pre-record data storage method

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WO2024237171A1 (ja) * 2023-05-12 2024-11-21 キヤノン株式会社 画像記録装置および画像記録方法

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