Classifications

• • 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
  • H04N5/917—Television signal processing therefor for bandwidth reduction
• • 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
  • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
  • G07C5/0841—Registering performance data
  • G07C5/085—Registering performance data using electronic data carriers
  • G07C5/0866—Registering performance data using electronic data carriers the electronic data carrier being a digital video recorder in combination with video camera
• • 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
  • G06V20/56—Context or environment of the image exterior to a vehicle by using sensors mounted on the vehicle
  • G06V20/58—Recognition of moving objects or obstacles, e.g. vehicles or pedestrians; Recognition of traffic objects, e.g. traffic signs, traffic lights or roads
• • 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
  • H04N5/772—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera the recording apparatus and the television camera being placed in the same enclosure
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N5/00—Details of television systems
  • H04N5/76—Television signal recording
  • H04N5/907—Television signal recording using static stores, e.g. storage tubes or semiconductor memories
• • 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
  • H04N7/188—Capturing isolated or intermittent images triggered by the occurrence of a predetermined event, e.g. an object reaching a predetermined position

Definitions

• the invention relates to a method for storing image data of a camera in an accident data memory of a
• the invention also relates to a Horda ⁇ disk memory for carrying out the method according to the invention.
• Accident data storage are known from the prior art.
• DE 42 21 280 C2 describes an accident data memory with a ring memory in which the image data generated by an image camera are stored.
• the storage of the image data in the ring memory is interrupted after a specified period of time to be read out for the evaluation of an accident process.
• other data relevant for the reconstruction of the accident process such as driving parameters, vehicle operating condition data and driver status data are also stored.
• the recording of the data also includes data on the position of the vehicle, such as a roadway width, a Fahrbahnkrüm- mung, a relative lateral position of the vehicle to the Fahr ⁇ web edges, a yaw angle, a pitch angle and a roll angle of the vehicle. Further, such data may relate to the vehicle environment, such as road signs, roadway texture, position, size, distance and relative velocity of other objects, for example. Cars, pedestrians and Mo ⁇ tortex.
• a disadvantage of these known methods is that a high storage requirement arises for carrying out these methods.
• object of the invention ⁇ a method for storing image data of a camera enclosed in an accident data memory of the vehicle with substantial Licher reduce the memory requirement for large amounts of data.
• Such a method for storing image data of a camera in an accident data memory of a vehicle is characterized by the following method steps: a) performing an object recognition by means of the image data, b) compressing the image data by means of a lossy compression method,
• the amount of data accumulating for storage is considerably reduced, without the data required for the reconstruction of an accident process being lost.
• Compression saves the image data in a reduced form and thus achieves a significant reduction in storage space, with only the object objects being completely stored for the detected objects.
• the compression can be increased so much because of having recorded object data revealing again the objects can be reconstructed, that Listebil ⁇ must not be stored with the.
• the data in the storage unit are stored statically, so that overwriting of the data is inhibited to use this data to a recon ⁇ constructive tion, for example. To perform an accident scene.
• odometstoff data of the vehicle and its position data are stored in addition to the compressed image data and the object data.
• the advantage is that the object data from the storage unit are read from ⁇ to reconstruct the accident scene and by means of a suitable method for generating synthetic image with the aid of
• Odometric data of the vehicle and its position data the accident scene can be visualized very well. These odometrical data of the vehicle as well as its position data thus serve to supplement the environment of the vehicle which is not sensed by sensors.
• the object recognition comprises the detection of moving objects of the vehicle environment.
• moving objects are eg. Cars, Fahrrä ⁇ of, pedestrians, wheelchairs or pets.
• object recognition preferably also includes the detection of static objects of the vehicle environment.
• static objects of the vehicle environment are, for example, lanes, traffic signs, buildings, etc.
• a ring memory for the memory unit, whereby the memory structure is predetermined.
• the trigger signal by means of an airbag device, an emergency braking device and / or a sensor unit of the vehicle generated.
• a trigger signal is thus generated in connection with the triggering of an airbag, emergency braking or the achievement of a predetermined acceleration threshold of an acceleration sensor.
• the trigger signal it is also possible for the trigger signal to be triggered manually by a vehicle occupant of the vehicle, wherein the triggered trigger signal causes the data of the memory unit to be stored on a mobile storage medium.
• the triggered trigger signal causes the data of the memory unit to be stored on a mobile storage medium.
• Triggered triggering for example, already past and recorded while driving events record.
• a memory card can be used as a mobile storage medium.
• the inventive method can be advantageously carried out by means of an accident data memory, which is equipped kitchens ⁇ tet with an image ⁇ camera, an object detection unit, a compression unit and ⁇ a ring memory as a storage unit.
• Figure 1 is a pictogram for explaining the method according to the invention.
• FIG. 1 shows by way of example an environmental scene SZ as recorded by a camera 2 of an accident data memory 10 of a vehicle (not shown). The structure of such an accident data memory 10 is shown in FIG.
• the image data generated by the camera 2, for example the environmental scene SZ, are fed both to an evaluation unit 3 as an object recognition unit and to a compression unit 4.
• the output data of this object recognition ⁇ unit 3 and the compression unit 4 are letge ⁇ passes to a ring memory 1 as a storage unit for storage. Furthermore, this ring memory 1 and sensor signals of a vehicle sensor 5, for example.
• the captured by the camera 2 image data of the surrounding scene SZ are stored as raw data from the compression unit 4 in re ⁇ du fashioner form.
• Such compression methods are known. Thus, for example, only every nth image is compressed and stored with such a compression method, so that only a small memory space is required for this.
• object recognition unit 3 powerful algo ⁇ rithms are 3.1 and 3.2 both for object detection of mobile objects such as vehicles, bicycles, pedestrians in wheelchairs rer, animals or how the dargestell ⁇ th in the surrounding scene SZ vehicles Pkwl and PKW2 and for object recognition of static objects of the vehicle environment, such as traffic signs chen, or installed in the surrounding scene SZ lanes L and buildings in the form of a building G installed.
• mobile objects such as vehicles, bicycles, pedestrians in wheelchairs rer, animals or how the dargestell ⁇ th in the surrounding scene SZ vehicles Pkwl and PKW2 and for object recognition of static objects of the vehicle environment, such as traffic signs chen, or installed in the surrounding scene SZ lanes L and buildings in the form of a building G installed.
• the mobile objects Pkwl, Pkw2 and the static objects L and G are recognized and their object data stored together with the compressed image data in the ring memory 1. Since these objects are tracked over several image frames, their object data can be stored over a longer period of time without having to use additional memory space.
• the object odometric data of the vehicle generated by the vehicle sensor 5 and the Positionsda ⁇ th of the GPS receiver 6 is stored in the ring memory. 1 As shown schematically in Figure 1, this Whether ⁇ jekt flowers can be read out from the accident data memory 10 and are visualized by means of a suitable device for generating synthetic image than ambient scene SCC.
• the reading out of the data from the ring memory 1 can take place, for example, via a data bus of the vehicle or via an on-board diagnostic interface.
• the triggering for the static storage of the data and thus the prevention of the overwriting of the data in the non-volatile ring memory 1 takes place by generating a trigger signal, for example from a passive or active Safety device, such as airbag device, emergency braking device, etc. and / or a sensor unit, for example.
• An acceleration sensor of the vehicle Thus, for example, the triggering of an airbag or emergency braking or the exceeding of a predetermined acceleration threshold leads to the generation of the trigger signal.
• the trigger for the static Abspei ⁇ manuals of the data in the ring memory 1 manually run by a driver or a passenger of the vehicle to interesting while driving, but already to accommodate past events.
• the data could be read from the ring memory 1 and stored in a memory card 7, which could be removed, for example, by the driver after the trip.

Landscapes

• Engineering & Computer Science (AREA)
• Multimedia (AREA)
• Signal Processing (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Theoretical Computer Science (AREA)
• Time Recorders, Dirve Recorders, Access Control (AREA)
• Traffic Control Systems (AREA)
• Studio Devices (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

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Cited By (4)

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Citations (4)

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• 2015
  • 2015-02-03 US US15/121,456 patent/US10349004B2/en active Active
  • 2015-02-03 WO PCT/DE2015/200056 patent/WO2015139693A1/de not_active Ceased
  • 2015-02-03 JP JP2016553304A patent/JP6741582B2/ja active Active
  • 2015-02-03 DE DE112015000529.3T patent/DE112015000529A5/de active Pending

Patent Citations (4)

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