WO2019203107A1 - Enregistreur de conduite, procédé de commande d'affichage, et programme - Google Patents

Enregistreur de conduite, procédé de commande d'affichage, et programme Download PDF

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Publication number
WO2019203107A1
WO2019203107A1 PCT/JP2019/015743 JP2019015743W WO2019203107A1 WO 2019203107 A1 WO2019203107 A1 WO 2019203107A1 JP 2019015743 W JP2019015743 W JP 2019015743W WO 2019203107 A1 WO2019203107 A1 WO 2019203107A1
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WO
WIPO (PCT)
Prior art keywords
event
image data
image
vehicle
recording
Prior art date
Application number
PCT/JP2019/015743
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English (en)
Japanese (ja)
Inventor
祐一 町田
Original Assignee
株式会社Ｊｖｃケンウッド
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 株式会社Ｊｖｃケンウッド filed Critical 株式会社Ｊｖｃケンウッド
Publication of WO2019203107A1 publication Critical patent/WO2019203107A1/fr

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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • 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
    • H04N5/915—Television signal processing therefor for field- or frame-skip recording or reproducing
    • 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
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

Definitions

  • the present invention relates to a drive recorder, a display control method, and a program.
  • the image recorded on the drive recorder is displayed unless the vehicle is temporarily stopped, such as waiting for a signal at an intersection. You may not be able to check properly in the car. Since the signal waiting time is relatively short, there is a demand for a technique for minimizing the amount of operation by the driver and appropriately selecting and displaying an image to be confirmed.
  • the present invention has been made in view of the above circumstances, and an object thereof is to provide a drive recorder that enhances user convenience.
  • a drive recorder includes an image acquisition unit that acquires image data from a camera that captures the periphery of a vehicle, an event detection unit that detects occurrence of an event related to the vehicle together with event information for identifying the event, Select either the image recording unit that records the image data including the image at the time corresponding to the occurrence of the event detected by the event detection unit on the recording device, or the image data recorded on the recording device based on the event information And a display control unit that causes the display device to display an image based on the image data selected by the image selection unit when the vehicle is stopped.
  • Another aspect of the present invention is a display control method.
  • the method includes: acquiring image data from a camera that captures the periphery of the vehicle; detecting an event related to the vehicle together with event information for identifying the event; and a time corresponding to the time when the detected event occurs Recording the image data including the image of the image on the recording device, selecting the image data recorded on the recording device based on the event information, and stopping the image based on the selected image data Sometimes displaying on a display device.
  • the convenience of the drive recorder can be improved.
  • the present embodiment is a drive recorder that records image data obtained by imaging the periphery of a vehicle.
  • image data acquired when the event occurs is recorded, and the recorded image data is automatically displayed when the vehicle stops. .
  • the user can look back on the situation at the time of the event occurrence in a short time when the vehicle is temporarily stopped such as waiting for a signal.
  • it is possible to enhance the user's awareness of safe driving by automatically reproducing an image when an event that may lead to an accident or collision such as sudden braking or lane departure occurs when the vehicle stops.
  • the user's convenience can be improved by preferentially reproducing and displaying the one having high importance.
  • FIG. 1 is a block diagram schematically showing the functional configuration of the drive recorder 10.
  • Each functional block shown in the figure can be realized by hardware such as a computer CPU and memory, or a mechanical device, and can be realized by software by a computer program or the like. It is drawn as a functional block to be realized. Therefore, those skilled in the art will understand that these functional blocks can be realized in various forms by a combination of hardware and software.
  • the drive recorder 10 includes an acquisition unit 12, an input / output unit 14, and a processing unit 16.
  • the acquisition unit 12 includes a vehicle information acquisition unit 20 and an image acquisition unit 22.
  • the input / output unit 14 includes an operation receiving unit 24, a display control unit 26, and an image recording unit 28.
  • the processing unit 16 includes an event detection unit 30, an importance level determination unit 32, a stop detection unit 33, a history management unit 34, an image selection unit 36, and an image processing unit 38.
  • the vehicle information acquisition unit 20 acquires information on the vehicle and information on the surrounding situation of the vehicle from the in-vehicle device 40.
  • the in-vehicle device 40 include a vehicle speed sensor, a rudder angle sensor, an acceleration sensor, an in-vehicle camera, a radar sensor, a position information sensor (GPS sensor), a navigation device, and a seating sensor, but are not limited thereto. Absent.
  • the vehicle information acquisition unit 20 may acquire such information through a CAN (ControllerCAArea Network) of the vehicle.
  • the image acquisition unit 22 acquires image data captured by the camera 42 attached to the vehicle.
  • the camera 42 is configured to image the vicinity of the vehicle to which it is attached, and is configured to image the front of the vehicle, for example.
  • the camera 42 may be configured to image only the outdoor of the vehicle, or may be configured to image both outdoor and indoor of the vehicle.
  • a plurality of cameras may be mounted on the vehicle. For example, each of the plurality of cameras may image the front, rear, and sides of the vehicle.
  • the image acquisition unit 22 may acquire image data from each of a plurality of cameras, or may acquire image data from only some cameras.
  • the operation accepting unit 24 accepts an operation input from the input device 44.
  • the display control unit 26 causes the display device 46 to display an image generated by the image processing unit 38.
  • the display device 46 is a display device such as a liquid crystal display, and is attached to the position of the center console or dashboard of the vehicle.
  • the display device 46 may be attached to the position of the camera 42.
  • the input device 44 is a so-called touch panel sensor, and is provided in the display area of the display device 46. Note that the input device 44 is not a touch type, and may be configured by buttons or the like arranged around the display device 46.
  • the input device 44 may be configured to receive a user's voice input, and may include, for example, a microphone.
  • the image recording unit 28 causes the recording device 48 to record image data acquired by the image acquisition unit 22, image data generated by performing image processing on the acquired image data, and the like.
  • the image recording unit 28 records the image data as a moving image file having a predetermined reproduction time of 30 seconds, 1 minute, 3 minutes, or 5 minutes.
  • the image recording unit 28 may record the image data as a still image file.
  • the image recording unit 28 may record time information, position information, event information, and the like at the time of acquisition of the image data in association with the image data as additional information regarding the image data.
  • the recording device 48 is, for example, a flash memory or a hard disk.
  • the recording device 48 may be provided in an external device such as a smartphone or a tablet connected by wireless communication such as Wi-Fi (registered trademark).
  • the event detection unit 30 detects the occurrence of an event related to the vehicle based on the information acquired by the acquisition unit 12.
  • the event detection unit 30 detects the occurrence of an event such as a vehicle accident or collision, and also detects the occurrence of an event that is considered highly likely to be a vehicle accident or collision.
  • the event detection unit 30 detects, as an event, an abrupt change in vehicle behavior due to a sudden brake, a sudden handle, a sudden start, or the like from information on the traveling speed or acceleration of the vehicle, operation information on an accelerator, a brake, a handle, or the like.
  • the event detection unit 30 detects, as an event, an approach to a preceding vehicle, an approach to an obstacle around the vehicle, a departure from a running lane, etc., based on information such as image data of the camera 42 or a radar sensor of the vehicle. To do.
  • the event detection unit 30 detects the occurrence of an event when a driving support function such as Adaptive Cruise Control (ACC) or Lane Keep Assist (LKAS) is in operation. Good.
  • ACC Adaptive Cruise Control
  • LKAS Lane Keep Assist
  • the event detection unit 30 may detect the occurrence of an event when the operation of the above-described driving support function is stopped due to a condition such as losing sight of another vehicle traveling in front or being unable to recognize a lane boundary.
  • the event detection unit 30 may detect an occurrence of an event that is not related to an event such as a vehicle accident or collision as an event. For example, when there is a predetermined input operation from the input device 44, the input operation may be detected as an event.
  • the event detection unit 30 may detect that the specific content is detected as an event. For example, when a specific road sign, a specific store, a specific landscape, a specific person, or the like is imaged, they may be detected as events. In addition, when the vehicle travels through a specific point, arrival at the specific point may be detected as an event.
  • the specific contents and specific points to be detected as events may be selectable from a menu prepared in advance, or the types of events to be detected may be individually set.
  • the importance level determination unit 32 determines the importance level of the event detected by the event detection unit 30. For example, the importance level determination unit 32 determines the importance level in a plurality of levels (for example, 3 levels) according to the level of the risk level of the event that has occurred, and determines that the importance level is higher as the event risk level is higher. For example, when information indicating an abrupt change in acceleration is acquired, the importance is determined based on the acquired amount of change in acceleration. Further, when the occurrence of sudden braking is detected, it is determined that the higher the traveling speed immediately before sudden braking or the longer the duration of sudden braking, the higher the degree of danger.
  • a plurality of levels for example, 3 levels
  • the importance level determination unit 32 may determine the level of risk level according to the type of event that has occurred, or may determine the level of risk level according to the number of types of events that occur simultaneously. For example, it may be determined that the risk level is higher when events such as sudden braking, sudden steering, and approaching the preceding vehicle occur independently than when events occur simultaneously.
  • the importance level determination unit 32 may determine the importance level for events that are not related to events such as vehicle accidents and collisions. That is, the importance level may be determined for an event that is not related to the magnitude of the risk level described above. For example, when the importance level is determined in three stages of “low”, “medium”, and “high”, the importance level determination unit 32 uniformly determines the importance level of “medium” for events not related to the magnitude of the risk level described above. Is determined.
  • the importance level determination unit 32 determines the importance level in a plurality of stages according to the event type detected by the event detection unit 30. For example, the importance level determination unit 32 may determine the importance level based on a set value set for each event type. Good.
  • the importance is determined to be “high”, while for an event triggered by the fact that the image includes specific content or the vehicle reaches a specific point The importance may be determined to be “medium”.
  • These determination criteria may be selectable from a menu prepared in advance, or may be set individually for each event type.
  • the image recording unit 28 causes the recording device 48 to record image data including an image at a time corresponding to the occurrence of the detected event.
  • the image recording unit 28 causes the recording device 48 to record at least the image data for a predetermined time spanning the event occurrence timing. For example, image data over a first time (for example, 15 seconds, 30 seconds, etc.) before the event occurrence time and a second time (for example, 5 seconds, 10 seconds, etc.) after the event occurrence time is recorded.
  • the recording device 48 can store image data before the event occurrence time temporarily recorded in the buffer memory when an event occurs. Can be recorded.
  • the image recording unit 28 When the image recording unit 28 records image data acquired when an event occurs, the image recording unit 28 also records event information for identifying the detected event together with the image data.
  • event information for example, the content of the detected event (sudden braking, lane departure, etc.), numerical information that triggered the event detection (detected values of various sensors, event duration, etc.), determined by the importance level determination unit 32 Memorize the importance level.
  • the image recording unit 28 may cause the recording device 48 to record only the image data corresponding to the event occurrence, or cause the recording device 48 to record both the image data corresponding to the event occurrence and the image data other than the event occurrence. May be. In the latter case, image data when an event occurs may be recorded with an attribute that cannot be overwritten, while image data when an event does not occur may be recorded with an attribute that can be overwritten.
  • Stop detection unit 33 detects whether the vehicle is running or stopped. For example, the stop detection unit 33 detects the stop of the vehicle based on the travel speed of the vehicle, and detects the stop of the vehicle when the travel speed of the vehicle is less than a predetermined value (for example, 2 km / h). The stop detection unit 33 may detect the stop of the vehicle by detecting the operation of the parking brake or the change to the parking gear.
  • the current position information of the vehicle may be acquired, and it may be detected that the vehicle is stopped at a predetermined place such as a home or work place based on the current position of the vehicle. Further, based on the current position information, it may be detected that the vehicle is temporarily stopped at the place where the “stop” stop sign recorded in the map information is installed.
  • the history management unit 34 manages the history information of the reproduction display of the image data recorded in the recording device 48. For example, the history management unit 34 generates history information indicating the number of times image data recorded in the recording device 48 has been reproduced and displayed on the display device 46. The history information when the image data is acquired from the image acquisition unit 22 and recorded in the recording device 48 is “0”. Thereafter, when a moving image based on the image data is reproduced and displayed on the display device 46, the history information is displayed. The numerical value held as +1 is incremented.
  • the history management unit 34 may hold a table of history information, or record history information in association with image data in the recording device 48. Also, history information may be held for each event type, and the number of occurrences for each event type and the occurrence rate for each event type relative to the total number of events may be aggregated and managed.
  • the image selection unit 36 selects image data to be displayed on the display device 46 when the vehicle is stopped based on the event information.
  • the image selection unit 36 preferentially selects image data having a high importance level determined by the importance level determination unit 32 among the image data recorded in the recording device 48.
  • the image selection unit 36 selects image data based on the history information managed by the history management unit 34, and preferentially selects image data of history information “0” indicating that it has not been displayed in the past. As a result, it is possible to automatically select and display on the display device 46 image data that has a high degree of importance and has not been confirmed by the user in the past.
  • the frequency of occurrence of the same event type as the displayed image data is obtained from the history information, and depending on the frequency of occurrence, "lane departures are frequent” or “too many brakes occur” ” May be issued.
  • Such alerting may be made by voice, or may be made by characters or marks superimposed on the display image of the display device 46.
  • the image selection unit 36 selects any one of the image data using a condition different from the above-described condition when there are a plurality of image data as selection candidates.
  • the image selection unit 36 may select image data based on time information, position information, and the like of recorded image data. For example, the latest image data, that is, the image data with a new recording time may be selected with priority, or the image data with the old recording time may be selected with priority.
  • image data close to the time when image data is reproduced and displayed may be preferentially selected. For example, when driving a vehicle during the day, image data captured during the day in the past is selected. When the vehicle is driven at night, image data captured at night in the past may be selected.
  • image data having position information close to the current position of the vehicle may be selected without being based on the recording time of the image data. For example, image data having position information included within a predetermined distance from the current position, or image data having position information indicating that the vehicle is on the same road as the road on which the vehicle is currently traveling may be selected.
  • image data having position information included within a predetermined distance from the current position, or image data having position information indicating that the vehicle is on the same road as the road on which the vehicle is currently traveling may be selected.
  • the image processing unit 38 generates an image to be displayed on the display device 46 and image data to be recorded on the recording device 48 based on the information acquired by the acquisition unit 12. Based on the image data acquired by the image acquisition unit 22, the image processing unit 38 generates a moving image file having a reproduction time of 30 seconds, 1 minute, 3 minutes, or 5 minutes as recording image data. The image processing unit 38 acquires the image data selected by the image selection unit 36 from the recording device 48 and generates a moving image file to be reproduced and displayed on the display device 46.
  • the image processing unit 38 generates an operation image for accepting an input operation from the user.
  • the image processing unit 38 generates a screen for setting the type of event to be detected and a screen for setting a criterion for determining the importance of the detected event.
  • the image processing unit 38 also generates a screen for accepting operations such as pause, stop playback, and restart playback of a moving image to be played back and displayed.
  • the image processing unit 38 generates an operation image for inputting whether or not the displayed image data can be deleted after the reproduction of the moving image. At this time, when an operation input indicating that deletion is possible is performed, the image data recorded in the recording device 48 is deleted, or the overwriting prohibition attribute of the recorded image data can be overwritten. Be changed.
  • the image data recorded in the recording device 48 is not deleted or the attribute is not changed.
  • the deletion of the image data and the attribute change may not be based on an input operation from the user, and the image once reproduced may be automatically changed to be overwritable.
  • the input operation from the user is not limited to a button press or an input through an operation image, and may be input by voice.
  • the image processing unit 38 may reproduce and display the image data recorded in the recording device 48 only when the vehicle is stopped, and may hide the image data while the vehicle is running.
  • the moving image being reproduced is paused, and then the reproduction is resumed from the point where the vehicle was paused when the vehicle stopped. Also good.
  • the image data may be paused and displayed in a reproducible state. At this time, the moving image may be reproduced and displayed when the user inputs a reproduction start operation.
  • the image processing unit 38 displays the image data acquired from the image acquisition unit 22 in real time while the vehicle is traveling, and displays a moving image selected from past image data when the vehicle is stopped. Also good.
  • the image processing unit 38 may display the image data acquired from the image acquisition unit 22 with a certain delay while the vehicle is traveling. At this time, the amount of delay may be changed according to the traveling speed. For example, the amount of delay may be decreased as the traveling speed increases so that an image a certain distance ahead is displayed. By displaying past images while traveling in this manner, it is possible to confirm a sign missed a while ago after a predetermined time without requiring user operation.
  • the image processing unit 38 displays an image in front of the vehicle when the vehicle can move forward, and switches to an image behind the vehicle when the vehicle can move backward. Also good. At this time, when displaying an image ahead of the vehicle, the display timing may be delayed according to the traveling speed, while when displaying an image behind the vehicle, a real-time image may be displayed.
  • the drive recorder 10 When an event occurrence is detected, the drive recorder 10 records the image data captured by the camera 42 in the recording device 48, determines the importance of the event that has occurred, and generates event information associated with the image data. If another event occurs with the passage of time, the drive recorder 10 records moving image data corresponding to the other event, and generates event information. In this way, a plurality of moving image data is recorded together with event information.
  • the drive recorder 10 selects any of the moving image data recorded in the recording device 48 and causes the display device 46 to display a moving image based on the selected moving image data.
  • appropriate moving image data is automatically selected and reproduced and displayed based on conditions such as importance of moving image data, past display history, time information and position information.
  • the user can check the video when an event such as a sudden change in acceleration, sudden steering operation, lane departure, etc. occurs, and the user for safe driving Can raise awareness.
  • a screen for inputting whether or not the moving image can be deleted is displayed.
  • an image that is determined not to need to be recorded can be deleted on the spot or changed to an overwritable attribute, thereby freeing up storage capacity.
  • the image data of the moving image is deleted or is in a deleteable state.
  • specific image data can be automatically selected and reproduced and displayed when the vehicle where the driver who is the user can watch the screen stops. For example, by reproducing a moving image when a high-risk event occurs, it is possible to alert the driver and raise awareness of safe driving. At this time, the driver can be more effectively alerted by selecting and playing back a moving image corresponding to an event having time information or position information close to the current time or current position. Moreover, not only an event with a risk level but also a moving image of an event detected based on an arbitrary condition can be played, so that a short moving image for spending a waiting time when the vehicle stops can be provided. Furthermore, it is possible to prevent the same moving image from being repeatedly displayed by preferentially selecting a moving image that has not been played back in the past. Further, by making it possible to delete the confirmed video, the limited storage capacity of the recording device 48 can be used efficiently.
  • FIG. 2 is a flowchart showing a flow of the display control method according to the embodiment.
  • the event detection unit 30 detects an event (Y in S10)
  • the importance level determination unit 32 determines the importance level of the event (S12), and image data at the time of event occurrence is recorded in the recording device 48 (S14). If no event is detected (N in S10), the processes in S12 and S14 are skipped.
  • the stop of the vehicle is detected by the stop detection unit 33 (Y in S16)
  • one of the image data recorded in the recording device 48 is selected and selected by the image selection unit 36 based on the importance of the event.
  • a moving image based on the image data is displayed (S18). If the vehicle is traveling (N in S16), the process of S18 is skipped.
  • the present invention has been described with reference to the above-described embodiment.
  • the present invention is not limited to the above-described embodiment, and the configuration shown in each display example is appropriately combined or replaced. Are also included in the present invention.
  • the image data may not be automatically reproduced.
  • the image data may not be displayed when a stop of the vehicle is detected at a predetermined location such as a parking lot at home or work. This is because when the vehicle is stopped at the parking lot, the engine is turned off and the user gets off, so it can be said that it is meaningless to display the image data.
  • designation of a predetermined place by the user is received in advance, and image data is not automatically reproduced when a stop of the vehicle is detected when the current position of the vehicle matches the designated predetermined place. It may be.
  • the image data may not be automatically reproduced so as not to hinder the safety confirmation around the vehicle after the pause by the user. For example, if the stop of the vehicle is detected when the position of a stop sign or railroad crossing recorded in the map information matches the current position of the vehicle, the image data may not be automatically reproduced. . Thereby, it is possible to avoid attracting the user's attention due to the image display at the time of safety confirmation by the temporary stop that the user should give priority.
  • the convenience of the drive recorder can be improved.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)
  • Television Signal Processing For Recording (AREA)
  • Closed-Circuit Television Systems (AREA)

Abstract

L'invention concerne un enregistreur de conduite (10) comprenant : une partie d'acquisition d'image (22) destinée à acquérir des données d'image d'une caméra servant à imager l'environnement d'un véhicule ; une partie de détection d'événement (30) destinée à détecter la survenue d'un événement relatif au véhicule conjointement avec des informations d'événement servant à identifier l'événement ; une partie d'enregistrement d'image (28) destinée à enregistrer dans un dispositif d'enregistrement (48) des données d'image comprenant une image à partir d'un instant correspondant au moment où l'événement détecté par la partie de détection d'événement (30) est survenu ; une partie de sélection d'image (36) destinée à sélectionner une instance des données d'image enregistrées sur le dispositif d'enregistrement (48) sur la base des informations d'événement servant à identifier l'événement détecté par la partie de détection d'événement (30) ; et une partie de commande d'affichage (10) destinée, pendant que le véhicule est en arrêt, à amener un dispositif d'affichage (46) à afficher une image sur la base des données d'image sélectionnées par la partie de sélection d'image (36).
PCT/JP2019/015743 2018-04-18 2019-04-11 Enregistreur de conduite, procédé de commande d'affichage, et programme WO2019203107A1 (fr)

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JP2018-079853 2018-04-18
JP2018079853A JP2019191639A (ja) 2018-04-18 2018-04-18 ドライブレコーダ、表示制御方法およびプログラム

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JP7480502B2 (ja) * 2019-12-20 2024-05-10 株式会社Ｊｖｃケンウッド 記録装置、記録方法及びプログラム
JP7243661B2 (ja) * 2020-02-20 2023-03-22 いすゞ自動車株式会社 イベント情報参照システム

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JP2002305706A (ja) * 2001-04-06 2002-10-18 Funai Electric Co Ltd 映像録画再生装置
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