WO2017219692A1 - 一种车载摄像设备的智能采集方法、装置及行车记录仪 - Google Patents

一种车载摄像设备的智能采集方法、装置及行车记录仪 Download PDF

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WO2017219692A1
WO2017219692A1 PCT/CN2017/074173 CN2017074173W WO2017219692A1 WO 2017219692 A1 WO2017219692 A1 WO 2017219692A1 CN 2017074173 W CN2017074173 W CN 2017074173W WO 2017219692 A1 WO2017219692 A1 WO 2017219692A1
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brightness
speed
level
average value
preset
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French (fr)
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魏党伟
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Beijing Qihoo Technology Co Ltd
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Beijing Qihoo Technology Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/95Computational photography systems, e.g. light-field imaging systems
    • H04N23/951Computational photography systems, e.g. light-field imaging systems by using two or more images to influence resolution, frame rate or aspect ratio
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70Circuitry for compensating brightness variation in the scene
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70Circuitry for compensating brightness variation in the scene
    • H04N23/71Circuitry for evaluating the brightness variation

Definitions

  • the present invention relates to the field of electrical communication technologies, and in particular, to an intelligent acquisition method and device for a vehicle-mounted imaging device and a driving recorder.
  • the car camera equipment has gradually become a hot spot of current research.
  • the vehicle-mounted camera device can help the driver to record the driving situation in real time, and can restore the driving state at each moment when necessary, as a driving reference.
  • On-board camera devices on the market such as driving recorders, typically record the driving process at a constant shooting frequency.
  • the light is relatively strong, such as backlighting, and the shooting frequency of the in-vehicle camera device is small, the exposure will be whitened, resulting in the lack of a large amount of driving data; when the light is weak and the shooting frequency of the in-vehicle camera device is relatively low
  • it will make the image quality rough, grainy and even invisible. In either case, the data recorded by the in-vehicle camera device loses reference significance.
  • the present invention provides an intelligent acquisition method, device and driving recorder for a vehicle-mounted camera device.
  • Providing an intelligent collection method for a vehicle-mounted camera device comprising:
  • the brightness average value of the sample image is an average value of brightness values of consecutive X frame sample images, and X is a positive integer;
  • the higher the average value of the brightness the higher the preset shooting frequency corresponding to the brightness average value.
  • Providing an intelligent collection device for a vehicle-mounted camera device comprising:
  • a sampling module configured to generate video data according to a shooting frequency, and sample the image from the video data according to a sampling frequency
  • a mean value module configured to calculate a brightness average value of the sample image; wherein, the brightness average value of the sample image is an average value of brightness values of consecutive X frame sample images, and X is a positive integer;
  • an adjusting module configured to determine a preset shooting frequency corresponding to the brightness average value according to the brightness average value, and generate video data by shooting at a preset shooting frequency corresponding to the brightness average value; wherein The higher the average value of the brightness, the higher the preset shooting frequency corresponding to the average value of the brightness.
  • a driving recorder including:
  • One or more processors are One or more processors;
  • One or more applications wherein the one or more applications are stored in the memory and configured to be executed by the one or more processors, the one or more programs configured to:
  • the brightness average value of the sample image is an average value of brightness values of consecutive X frame sample images, and X is a positive integer;
  • the higher the average value of the brightness the higher the preset shooting frequency corresponding to the brightness average value.
  • a computer program comprising computer readable code that, when executed on a computing device, causes the computing device to perform an intelligent acquisition method of an in-vehicle camera device as described above.
  • a computer readable medium is provided in which a computer program as described above is stored.
  • the intelligent acquisition method, device and driving recorder of the vehicle-mounted camera device have the following beneficial effects:
  • the intelligent acquisition method, device and driving recorder of the vehicle-mounted camera device can adjust the shooting frequency in real time by acquiring the brightness value of the sample image of consecutive X frames in the video data, and then obtaining the brightness average value, thereby obtaining better video data.
  • the intelligent acquisition method, device and driving recorder of the vehicle-mounted camera device further introduce the driving speed as a reference on the basis of the average value of the brightness, thereby better realizing the purpose of adjusting the shooting frequency in real time, and further improving the video to a certain extent.
  • the reference meaning of the data is not limited to adjust the data.
  • the intelligent acquisition method, device and driving recorder of the vehicle-mounted camera device ensure the running speed of the processor by appropriately adjusting the resolution of each frame image when the shooting frequency is increased, thereby improving the service life of the processor and extending to a certain extent.
  • the age of the camera device ensures the running speed of the processor by appropriately adjusting the resolution of each frame image when the shooting frequency is increased, thereby improving the service life of the processor and extending to a certain extent.
  • FIG. 1 is a schematic flow chart of an intelligent collection method of a vehicle-mounted camera device according to an embodiment of the present invention
  • FIG. 2 is a schematic flow chart of generating video data according to a shooting frequency in an intelligent collection method of an in-vehicle camera device according to an embodiment of the present invention
  • FIG. 3 is a block diagram showing an intelligent collection device of an in-vehicle camera device in an embodiment of the present invention
  • Figure 4 shows schematically a block diagram of a computing device for performing the method according to the invention
  • Fig. 5 schematically shows a storage unit for holding or carrying program code implementing the method according to the invention.
  • an intelligent acquisition method of an in-vehicle camera device is provided, which is applied to a scene of a vehicle-mounted camera device, wherein the camera device includes a camera, a mobile phone, a driving recorder, and the like. Camera function device.
  • the present embodiment is exemplified by the application of the method to the imaging mode of the driving recorder, wherein the technical solution of the driving recorder is designed for the Anba chip and the embedded operating system. It should be understood that the hardware and software of the driving recorder can be based on other design options, such as the Texas Instruments DM368.
  • the intelligent collection method of the in-vehicle camera device includes the following steps 102-106:
  • Step 102 Acquire generated video data according to the shooting frequency, and sample the image from the video data according to the sampling frequency.
  • FIG. 2 shows a flow chart of step 102 in the embedded system.
  • the above-mentioned shooting generation of video data according to the shooting frequency includes the following steps 202-208:
  • Step 202 Open the video device file and initialize the parameters of the video capture.
  • the operating system usually blocks the special details of the hardware device.
  • the above shielding process is usually performed using device files, wherein the purpose of the device files is to make the input and output devices more similar to files.
  • the device file includes a device file and a character device file, wherein the block device file refers to a device that can be randomly accessed, such as a disk; the character device file refers to a device that operates in a character stream manner. , such as a camera.
  • the above-described driving recorder uses a standard V4L2 to drive the camera. If only one camera is inserted, the device file corresponding to the camera is /dev/video0; if the insertion is two, it is /dev/video1 and /dev/video1 respectively; if more is inserted, it can be sequentially established in order. Device file. The above video device files can be opened by directly calling the OPEN function.
  • V4L2 is an application programming interface for acquiring picture, video and audio data under the LINUX operating system. With appropriate video capture devices and corresponding drivers, images, videos and audio can be collected.
  • the V4L2 specification defines not only general application programming interface elements, image formats, input/output methods, but also a set of interfaces that define the Linux kernel driver for processing video information. These interfaces include: video mining Set interface, video output interface, video overlay/preview interface, video output overlay interface, and codec interface.
  • the above camera is a camera driven by a standard V4L2, that is, the camera supports UVC.
  • UVC is a protocol standard defined by Microsoft and equipment manufacturers for USB video capture devices, and has become the standard of USB Association.
  • the parameter initialization of the video capture is to initialize parameters of the file descriptor FD_V4L2 corresponding to the device file of the camera. Specifically, it includes setting the video capture window parameters, setting the video dot matrix format and dot matrix size, and setting the video capture frequency.
  • the setting acquisition window is the starting abscissa and ordinate of the camera when the camera is set, and the width and height of the captured image. Etc; set the video dot matrix format and dot matrix size to capture the video format; set the video capture frequency is to set the average time per frame.
  • parameter initialization of video capture may be performed by an IOCTL function, which is a function of the device driver that manages the input and output channels of the device.
  • the format of the above-mentioned captured video is YUV format, wherein YUV is adopted by European television system.
  • the YUV format usually has two broad categories: a packed format and a flat format.
  • the packed format stores YUV components in the same array, usually several adjacent pixels form a macro pixel; the flat format is separated by three arrays. Store the three components of YUV.
  • YUV which is often proposed in practice, is also called YCbCr.
  • This YCbCr is part of the ITU-R BT1601 recommendation during the development of the World Digital Organization Video Standard. It is essentially YUV scaled and offset. Replica. Among them, Y has the same meaning as Y in YUV, and Cb and Cr also refer to color.
  • Step 204 Apply a frame buffer of multiple video captures.
  • a plurality of frame buffers are applied in the memory by the driver to store the video data.
  • the application requests a frame buffer of several video data through VIDIOC_REQBUFS, and the number of application frame buffers is generally not less than three, and each frame buffer stores one frame of video data, and these frame buffers are in kernel space.
  • VIDIOC_QUERYBUF uses VIDIOC_QUERYBUF to query the length and offset address of the frame buffer in kernel space.
  • the address of the applied kernel space frame buffer is mapped to the user space by MMAP(), so that the data of the frame buffer can be directly processed.
  • VIDIOC_REQBUFS is an identifier for memory allocation
  • VIDIOC_QUERYBUF is also an identifier for converting the data cache allocated in VIDIOC_REQBUFS into a physical address
  • MMAP() is a shared memory creation mechanism that passes the disk Create a file on it, and open a space for mapping in each process memory.
  • the frame buffer for applying for multiple video captures is a frame buffer for requesting five video captures.
  • Step 206 Queue the applied frame buffer in the video capture input queue and start video capture.
  • the driver first defines two queues in the process of processing video: a video capture input queue and a video capture output queue, wherein the video capture input queue is a queue waiting to drive to store video data; video capture The output queue is the queue in which the driver has placed the video data. Video capture is initiated when the application queues the above frame buffers in the video capture input queue.
  • Step 208 The driver starts to collect the video data, and the application program takes out the frame buffer from the video capture output queue. After the processing, the frame buffer is re-inputted into the video capture input queue, and the continuous video data is collected cyclically.
  • the driver starts to collect one frame of data, and puts the collected data into the first frame buffer of the video capture input queue, and the data acquisition of one frame is completed, that is, the first frame buffer is full.
  • the driver moves the frame buffer to the video capture output queue, waiting for the application to fetch from the output queue.
  • the driver then collects the next frame of data and puts it into the second frame buffer. After the same frame buffer is filled with the next frame of data, it is placed in the video capture output queue.
  • the application takes the frame buffer containing the video data from the video capture output queue and processes the video data in the frame buffer, such as encoding or compression. Finally, the application re-places the frame buffer of the processed data into the video capture input queue so that it can be recycled.
  • H.264 is a highly compressed digital video codec standard proposed by the joint video group composed of the ITU-T video coding expert group and the ISO/IEC dynamic image expert group. This standard is commonly referred to as H.264/AVC or AVC/H.264 or H.264/MPEG-4 AVC or MPEG-4/H.264 AVC; NAL units are variable-length byte strings of a certain syntax element. Including the header information containing one byte representing the data type and the load data of several integer bytes, the encoded video sequence of H.264 includes a series of NAL units.
  • the sampled image obtained from the video signal according to the sampling frequency is sampled from the frame buffer containing the video data in the video capture output queue according to the sampling frequency.
  • the sampling frequency may be set according to the driving speed. Specifically, the video signal is generated according to the shooting frequency, and before the sampling image is sampled according to the sampling frequency, the following steps are included:
  • the size of the sampling frequency is determined based on the magnitude of the driving speed; wherein, the greater the driving speed, the higher the sampling frequency corresponding to the driving speed.
  • the sampling frequency is 1 frame/s when the driving speed is 10 KM/H, and the sampling frequency is 2 frames/s when the driving speed is 30 KM/H.
  • Step 104 Calculate a brightness average value of the sample image; wherein, the brightness average value of the sample image is an average value of brightness values of consecutive X frame sample images, and X is a positive integer.
  • the luminance value is the Y value of the YUV color space, that is, the average value of the luminance of the sampled image is the average value of the Y values of the consecutive X-frame sampled images.
  • video signals of a plurality of signal patterns are converted to a unified RGB data pattern by a video processing chip. Then, calculating the average brightness of the sampled image includes the following steps:
  • the above RGB data mode is a color standard in the industry, which is obtained by changing the three color channels of red, green and blue and superimposing them on each other, and RGB is representative.
  • the color of the three channels of red, green and blue, this standard includes almost human vision. All the colors that force can perceive are one of the most widely used color systems.
  • Step 106 Determine a preset shooting frequency corresponding to the brightness average value according to the brightness average value, and generate video data by using a preset shooting frequency corresponding to the brightness average value; wherein the brightness average The higher the value, the higher the preset shooting frequency corresponding to the brightness average.
  • the method before determining a preset shooting frequency corresponding to the brightness average value according to the brightness average value, the method includes:
  • a plurality of brightness levels are preset, and corresponding shooting frequencies are set for the respective brightness levels.
  • Determining, according to the average value of the brightness, a preset shooting frequency corresponding to the brightness average value includes:
  • a preset photographing frequency corresponding to the brightness level is determined according to the brightness level.
  • preset 5 brightness levels (units are lumens per square meter): [0-10000], [10000-20000], [20000-30000], [30000-40000], [40000-50000], respectively
  • the five brightness levels preset the corresponding shooting frequency (units are fps): 15, 24, 25, 30, 60, in the intelligent acquisition method of the vehicle-mounted camera device, when the average brightness is determined to be 8000 lumens / square In the case of meters, the corresponding brightness level is [0-10000], and the shooting frequency determined according to the brightness level [0-10000] is 15 fps.
  • the brightness value or the Y value is used.
  • the illuminance is used to divide the brightness level. It should be understood that such a description is also taken in the following examples. It can be understood that in some embodiments in which five brightness levels are preset by the brightness value or the Y value, the brightness level can be described as [0-50], [50-100], [100-150], [150 -200], [200-255], adaptively, the corresponding brightness average is also expressed in terms of Y value.
  • the on-board smart camera device changes from 8000 lumens/square meter to 15000 lumens/square.
  • the on-board smart camera device also adjusts the shooting frequency to correspond to the brightness level [10000-20000]. Frequency 24fps.
  • a plurality of brightness levels are preset to be discontinuous, for example, adjacent brightness levels have the same interval interval, and the other vehicles are buffered by the interval interval.
  • the formed light interferes with the on-board camera equipment being overloaded.
  • preset 5 brightness levels (units are lumens per square meter): [0-10000], [12000-20000], [22000-30000], [32000-40000], [42000-50000], adjacent
  • the brightness level has an interval of 2000 lumens per square meter
  • the corresponding shooting frequencies (in fps) are preset for the five brightness levels: 15, 24, 25, 30, 60, in the car camera
  • the on-board smart camera device detects that the average brightness value gradually increases from 8000 lumens/square meter, when it increases to 11000 lumens/square meter, the shooting frequency remains unchanged, and when it continues to increase to 12000 lumens/
  • the average value of the brightness changes from the brightness level [0-10000] to the brightness level [10000-20000]
  • the shooting frequency of the in-vehicle smart camera device is adjusted to the shooting frequency of 24 fps corresponding to the brightness level [10000-20000].
  • the plurality of brightness levels are preset to be continuous, that is, the adjacent brightness levels have a common critical brightness value, and determining the brightness level of the preset brightness average includes:
  • the brightness level is the adjacent brightness level.
  • This embodiment buffers the light interference formed by the other vehicles by preset brightness thresholds, and avoids overload operation of the vehicle-mounted imaging device.
  • preset 5 brightness levels (units are lumens per square meter): [0-10000], [10000-20000], [20000-30000], [30000-40000], [40000-50000], respectively
  • the five brightness levels preset the corresponding shooting frequency (units are fps): 15, 24, 25, 30, 60, in the intelligent acquisition method of the car camera device, when the car smart camera device monitors the brightness average Starting from 8000 lumens per square meter, the shooting frequency will remain unchanged when it is increased to 10,000 lumens per square meter. When it continues to increase to 10,500 lumens per square meter, the average brightness is confirmed to vary from the brightness level [0-10000].
  • the shooting frequency of the in-vehicle smart camera device is adjusted to the shooting frequency of 24 fps corresponding to the brightness level [10000-20000].
  • the setting of the preset brightness threshold in this embodiment provides a criterion for determining whether the average brightness value enters a new brightness level, that is, the brightness average value is considered to be relatively stable when the difference from the critical brightness value exceeds the preset brightness threshold. Change to the corresponding brightness level, and adjust the shooting frequency of the on-board smart camera device to avoid repeated adjustment of the shooting frequency caused by the irregularity of the brightness average.
  • the average brightness of the sampled image is constantly increasing, totaling across three brightness levels, such as brightness levels in multiple consecutive brightness levels. [0-10000], brightness level [10000-20000] and brightness level [20000-30000] or brightness levels [0-10000] in the case of multiple discontinuous brightness levels, brightness level [12000-20000], and brightness level [22000-30000].
  • the vehicle has a relatively short dwell time in the brightness level [10000-20000], and it is easy to know that the adjustment of the shooting frequency of the onboard smart camera device in this extremely short time is There is no point in the process of underground garage to the ground.
  • determining the brightness level of the brightness average value includes:
  • the dwell time exceeds the first preset time threshold, it is determined that the brightness level of the brightness average is the adjacent brightness level.
  • the method before determining a preset shooting frequency corresponding to the brightness average value according to the brightness average value, the method includes:
  • a plurality of speed levels are preset according to the speed level at each brightness level, wherein each speed level corresponds to a respective shooting frequency in the shooting frequency interval section; the higher the speed, the higher the shooting frequency corresponding to the speed.
  • the determining, according to the brightness average value, the preset shooting frequency corresponding to the brightness average value includes:
  • Determining, according to the average value of the brightness, a preset shooting frequency corresponding to the brightness average value includes:
  • the driving speed is obtained, and the speed level is confirmed according to the driving speed, and the shooting frequency corresponding to the speed level is determined according to the speed level.
  • preset 5 brightness levels (units are lumens per square meter): [0-10000], [10000-20000], [20000-30000], [30000-40000], [40000-50000], respectively
  • These 5 brightness levels preset the corresponding shooting frequency interval segments (units are fps): [10-20], [20-30], [30-40], [40-50], [50-60]
  • the corresponding The brightness level is [0-10000]
  • the shooting frequency interval section determined according to the brightness level [0-10000] is [10-20].
  • preset 5 speed grades (units are kilometers/hour): [0-20], [20-60], [60-90], [90-120], [120-150], above
  • the preset 5 frequency levels correspond to the shooting frequency interval corresponding to the preset speeds of the 5 speed levels, wherein the higher the speed, the higher the shooting frequency corresponding to the speed, such as the brightness level [ 10000-20000] corresponds to the shooting frequency interval [20-30] for speed grade [0-20], speed grade [20-60], speed grade [60-90], speed grade [90-120], and speed Level [120-150] sequentially presets the corresponding shooting frequency (units are fps): 22, 24, 26, 28, 30.
  • the corresponding brightness level is [10000-20000]
  • the shooting frequency determined according to the brightness level [10000-20000] Interval section [20-30] when the determined driving speed is 40 km/h, the corresponding speed grade is [20-60], and the shooting frequency interval section [20-30] corresponds to the speed grade [20- 60]
  • the shooting frequency is 24fps.
  • processing may be performed in a manner similar to the above-described brightness level.
  • the plurality of speed levels are preset to be discontinuous, and the adjacent speed levels have the same interval interval, and the interval interference is used to buffer the speed interference caused by the road conditions and the like.
  • the speed disturbance formed by the road condition may be buffered by a preset speed threshold.
  • the plurality of speed levels are preset to be continuous, and the adjacent speed levels have a common critical speed value. Then confirm the speed grade according to the driving speed including:
  • the car in some special cases, for example, in the process of accelerating the car, sometimes it may need to cross multiple speed grades. For example, if the car accelerates from 10 km/h to 100 km/h, it needs to cross the speed grade [0]. -20], speed grade [20-60], speed grade [60-90], and speed grade [90-120]. It can be understood that in this process, the car has a relatively short dwell time in the speed grade [0-20], the speed grade [20-60], and the speed grade [60-90], which is easy to know at the pole. The adjustment of the shooting frequency of the on-board smart camera device in a short period of time is meaningless.
  • confirming the speed level according to the driving speed includes:
  • the speed level of the driving speed is determined to be the adjacent speed level.
  • the processing speed of the processor may be reduced according to the processing speed of the processor in the vehicle-mounted imaging device.
  • the resolution of the image may be reduced according to the processing speed of the processor in the vehicle-mounted imaging device.
  • an intelligent collection device for an in-vehicle camera device including: a sampling module 3001, an average module 3003, and an adjustment module 3005, wherein:
  • the sampling module 3001 is configured to capture and generate video data according to a shooting frequency, and sample the sampled image from the video data according to a sampling frequency;
  • a mean value module 3003 configured to calculate a brightness average value of the sample image; wherein, the brightness average value of the sample image is an average value of brightness values of consecutive X frame sample images, and X is a positive integer;
  • the adjusting module 3005 is configured to determine, according to the brightness average value, a preset shooting frequency corresponding to the brightness average value, and pass the light
  • the predetermined shooting frequency corresponding to the degree average is captured to generate video data; wherein, the higher the average value of the brightness, the higher the preset shooting frequency corresponding to the brightness average value.
  • the luminance value is the Y value of the YUV color space.
  • the above device also includes:
  • a first preset module configured to preset a plurality of brightness levels before determining a preset shooting frequency corresponding to the brightness average value according to the brightness average value, and set a corresponding shooting frequency for each brightness level.
  • the adjustment module 3005 includes:
  • a brightness level unit for determining a brightness level of the brightness average value
  • a first frequency unit configured to determine a preset shooting frequency corresponding to the brightness level according to the brightness level.
  • the plurality of brightness levels are discontinuous with adjacent interval intervals between adjacent brightness levels.
  • the plurality of brightness levels are continuous, the adjacent brightness levels have a common critical brightness value, and the brightness level unit includes:
  • a first brightness determining unit configured to determine when the average value of the brightness changes from one brightness level to an adjacent brightness level, and the difference between the two brightness levels and the common threshold brightness value exceeds a preset brightness threshold
  • the brightness level of the brightness average is the adjacent brightness level.
  • the brightness level unit comprises:
  • a brightness judging unit configured to determine, when the brightness average value changes from one brightness level to an adjacent brightness level, a dwell time at which the brightness average value is stabilized at the adjacent brightness level;
  • the second brightness determining unit is configured to determine, when the dwell time exceeds the first preset time threshold, a brightness level of the brightness average value as the adjacent brightness level.
  • the above device includes:
  • a second preset module configured to preset a plurality of brightness levels according to the brightness level before determining a preset shooting frequency corresponding to the brightness average value according to the brightness average value, and set a corresponding shooting frequency for each brightness level Interval segment
  • a third preset module configured to preset a plurality of speed levels according to the speed level at each brightness level, wherein each speed level corresponds to a respective shooting frequency in the shooting frequency interval segment; The speed corresponds to the higher the shooting frequency.
  • the adjustment module 3005 includes:
  • An interval segment unit configured to determine a brightness level of the brightness average value, and determine a shooting frequency interval segment corresponding to the brightness level according to the brightness level;
  • the second frequency unit is configured to acquire a driving speed, and confirm a speed level according to the driving speed, and determine a shooting frequency corresponding to the speed level according to the speed level.
  • the plurality of speed levels are discontinuous with adjacent interval intervals having the same interval.
  • the plurality of speed levels are continuous, the adjacent speed levels have a common critical speed value, and the second frequency unit comprises:
  • a first speed determining unit configured to determine when the driving speed changes from one speed level to an adjacent speed level, and when a difference between the two speed levels and the shared critical speed value exceeds a preset speed threshold
  • the speed grade of the driving speed is the adjacent speed grade.
  • the second frequency unit comprises:
  • a speed judging unit configured to determine, when the driving speed changes from a speed level to an adjacent speed level, a dwell time in which the driving speed is stable at the adjacent speed level;
  • the second speed determining unit is configured to determine, when the dwell time exceeds the second preset time threshold, a speed level of the driving speed as the adjacent speed level.
  • the above device includes:
  • a vehicle speed acquisition module configured to generate a video signal according to a shooting frequency, and obtain a driving speed before sampling the image from the video signal according to a sampling frequency
  • a sampling frequency module configured to determine a size of the sampling frequency based on a magnitude of the driving speed; wherein, the driving speed is higher, the sampling frequency corresponding to the driving speed is higher.
  • the above device also includes:
  • the resolution module is configured to reduce the resolution of each frame image according to the processing speed of the processor in the vehicle-mounted imaging device when the shooting frequency is increased.
  • a driving recorder including
  • One or more processors are configured to perform calculations, calculations, and calculations, and calculations.
  • the memory can be used to store software programs and modules, and the processor executes various functional applications and data processing of the driving recorder by running software programs and modules stored in the memory.
  • the memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as a sound playing function, an image playing function, etc.), and the storage data area may be stored according to driving. Data created by the use of the recorder (such as audio data, phone book, etc.).
  • the memory may comprise a high speed random access memory, and may also comprise a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device;
  • the display can be used to display information entered by the user or information provided to the user as well as various menus of the driving recorder.
  • the display may include a display panel.
  • the display panel may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.
  • the touch panel may cover the display panel, and when the touch panel detects a touch operation on or near the touch panel, the touch panel transmits to the processor to determine the type of the touch event, and then the processor is on the display panel according to the type of the touch event. Provide the corresponding visual output.
  • the one or more applications described above are stored in the memory and configured to be executed by the one or more processors, the one or more programs configured to:
  • the brightness average value of the sample image is an average value of brightness values of consecutive X frame sample images, and X is a positive integer;
  • the higher the average value of the brightness the higher the preset shooting frequency corresponding to the brightness average value.
  • the brightness value is a Y value of the YUV color space, wherein the Y value ranges from 0 to 255.
  • determining the preset shooting frequency corresponding to the brightness average value according to the brightness average value comprises:
  • a plurality of brightness levels are preset, and corresponding shooting frequencies are set for the respective brightness levels.
  • determining a preset shooting frequency corresponding to the brightness average value according to the brightness average value includes:
  • a preset photographing frequency corresponding to the brightness level is determined according to the brightness level.
  • the plurality of brightness levels are discontinuous with adjacent interval intervals between adjacent brightness levels.
  • the plurality of brightness levels are continuous, the adjacent brightness levels have a common critical brightness value, and determining the brightness level of the brightness average comprises:
  • determining the brightness level of the brightness average is Adjacent brightness levels are described.
  • determining the brightness level of the brightness average includes:
  • the brightness level of the brightness average is determined to be an adjacent brightness level.
  • determining the preset shooting frequency corresponding to the brightness average value according to the brightness average value comprises:
  • a plurality of speed levels are preset according to the speed level at each brightness level, wherein each speed level corresponds to a respective shooting frequency in the shooting frequency interval section; the higher the speed, the higher the shooting frequency corresponding to the speed.
  • determining a preset shooting frequency corresponding to the brightness average value according to the brightness average value includes:
  • the driving speed is obtained, and the speed level is confirmed according to the driving speed, and the shooting frequency corresponding to the speed level is determined according to the speed level.
  • the plurality of speed levels are discontinuous with adjacent interval intervals having the same interval.
  • the plurality of speed levels are continuous, the adjacent speed levels have a common critical speed value, and the speed level is determined based on the driving speed, including:
  • confirming the speed level based on the driving speed includes:
  • the speed level of the driving speed is determined to be an adjacent speed level.
  • the generated video signal is captured according to the shooting frequency, and the sampled image is sampled from the video signal according to the sampling frequency. Before, it also includes the steps:
  • the higher the driving speed the higher the sampling frequency corresponding to the driving speed.
  • the driving recorder includes: when the shooting frequency is increased, the resolution of each frame of image is correspondingly reduced according to a processing speed of a processor in the onboard imaging device.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the program may be stored in a computer readable storage medium, and the storage medium may include: Read Only Memory (ROM), Random Access Memory (RAM), disk or optical disk.
  • ROM Read Only Memory
  • RAM Random Access Memory
  • the intelligent acquisition method, device and driving recorder of the vehicle-mounted camera device have the following beneficial effects:
  • the intelligent acquisition method, device and driving recorder of the vehicle-mounted camera device can adjust the shooting frequency in real time by acquiring the brightness value of the sample image of consecutive X frames in the video data, and then obtaining the brightness average value, thereby obtaining better video data.
  • the intelligent acquisition method, device and driving recorder of the vehicle-mounted camera device further introduce the driving speed as a reference on the basis of the average value of the brightness, thereby better realizing the purpose of adjusting the shooting frequency in real time, and further improving the video to a certain extent.
  • the reference meaning of the data is not limited to adjust the data.
  • the intelligent acquisition method, device and driving recorder of the vehicle-mounted camera device ensure the running speed of the processor by appropriately adjusting the resolution of each frame image when the shooting frequency is increased, thereby improving the service life of the processor and extending to a certain extent.
  • the age of the camera device ensures the running speed of the processor by appropriately adjusting the resolution of each frame image when the shooting frequency is increased, thereby improving the service life of the processor and extending to a certain extent.
  • the various component embodiments of the present invention may be implemented in hardware, or in a software module running on one or more processors, or in a combination thereof.
  • a microprocessor or digital signal processor can be used in practice. (DSP) to implement some or all of the functions of some or all of the components of the intelligent acquisition device and the drive recorder of the in-vehicle camera device according to an embodiment of the present invention.
  • DSP digital signal processor
  • the invention can also be implemented as a device or device program (e.g., a computer program and a computer program product) for performing some or all of the methods described herein.
  • Such a program implementing the invention may be stored on a computer readable medium or may be in the form of one or more signals. Such signals may be downloaded from an Internet website, provided on a carrier signal, or provided in any other form.
  • FIG. 4 illustrates a computing device that can implement an intelligent acquisition method of an in-vehicle camera device in accordance with the present invention.
  • the computing device conventionally includes a processor 410 and a computer program product or computer readable medium in the form of a memory 420.
  • the memory 420 may be an electronic memory such as a flash memory, an EEPROM (Electrically Erasable Programmable Read Only Memory), an EPROM, a hard disk, or a ROM.
  • Memory 420 has a memory space 430 for program code 431 for performing any of the method steps described above.
  • storage space 430 for program code may include various program code 431 for implementing various steps in the above methods, respectively.
  • the program code can be read from or written to one or more computer program products.
  • These computer program products include program code carriers such as hard disks, compact disks (CDs), memory cards or floppy disks. Such computer program products are typically portable or fixed storage units as described with reference to FIG.
  • the storage unit may have storage segments, storage spaces, and the like that are similarly arranged to memory 420 in the computing device of FIG.
  • the program code can be compressed, for example, in an appropriate form.
  • the storage unit includes computer readable code 431', ie, code readable by a processor, such as 410, that when executed by a computing device causes the computing device to perform each of the methods described above step.

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Abstract

本发明公开一种车载摄像设备的智能采集方法、装置及行车记录仪,其包括根据拍摄频率拍摄生成视频数据,从所述视频数据中按照采样频率采样得到采样图像;计算所述采样图像的亮度平均值;其中,所述采样图像的亮度平均值为连续X帧采样图像的亮度值的平均值,X为正整数;根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率,并通过与所述亮度平均值对应的预设的拍摄频率拍摄生成视频数据。本发明通过采集视频数据中的连续X帧的采样图像的亮度值并进而获取其亮度平均值来实时调整拍摄频率,进而获取较佳的视频数据,为使用者提供具有较大参考意义的记录数据。

Description

一种车载摄像设备的智能采集方法、装置及行车记录仪 技术领域
本发明涉及电通信技术领域,更具体地,涉及一种车载摄像设备的智能采集方法、装置及行车记录仪。
背景技术
随着移动技术的不断发展、机动车辆的不断增多、交通状况的不断复杂化,车载智能系统对于行车数据的记录和处理将成为今后交通领域发展的主要方向,作为车载智能系统的重要部分之一的车载摄像设备逐渐成为当前研究的热点。车载摄像设备能够帮助驾驶者实时记录行车情景,必要时能够还原各个时刻的行车状态,作为行车参考。
目前市场上的车载摄像设备,譬如说行车记录仪,它们通常以不变的拍摄频率对行车过程进行持续记录。显而易见地,当光线比较强,譬如说逆光时,而车载摄像设备的拍摄频率较小时,就会曝光过渡而泛白,导致大量行车数据的缺失;当光线比较弱而车载摄像设备的拍摄频率较大时,就会使得画质粗糙、颗粒感强甚至看不清拍的对象。无论是上述哪种情况,均导致车载摄像设备所记录的数据失去参考意义。
发明内容
鉴于上述问题,本发明提出了一种车载摄像设备的智能采集方法、装置及行车记录仪。
为实现该目的,本发明采用如下技术方案:
方案一:
提供一种车载摄像设备的智能采集方法,包括:
根据拍摄频率拍摄生成视频数据,从所述视频数据中按照采样频率采样得到采样图像;
计算所述采样图像的亮度平均值;其中,所述采样图像的亮度平均值为连续X帧采样图像的亮度值的平均值,X为正整数;
根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率,并通过与所述亮度平均值对应的预设的拍摄频率拍摄生成视频数据;
其中,所述亮度平均值越高,与所述亮度平均值对应的预设的拍摄频率越高。
方案二:
提供一种车载摄像设备的智能采集装置,包括:
采样模块,用于根据拍摄频率拍摄生成视频数据,从所述视频数据中按照采样频率采样得到采样图像;
均值模块,用于计算所述采样图像的亮度平均值;其中,所述采样图像的亮度平均值为连续X帧采样图像的亮度值的平均值,X为正整数;
调整模块,用于根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率,并通过与所述亮度平均值对应的预设的拍摄频率拍摄生成视频数据;其中,所述亮度平均值越高,与所述亮度平均值对应的预设的拍摄频率越高。
方案三:
提供一种行车记录仪,包括:
一个或多个处理器;
存储器;
摄像头;
一个或多个应用程序,其中所述一个或多个应用程序被存储在所述存储器中并被配置为由所述一个或多个处理器执行,所述一个或多个程序配置用于:
根据拍摄频率拍摄生成视频数据,从所述视频数据中按照采样频率采样得到采样图像;
计算所述采样图像的亮度平均值;其中,所述采样图像的亮度平均值为连续X帧采样图像的亮度值的平均值,X为正整数;
根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率,并通过与所述亮度平均值对应的预设的拍摄频率拍摄生成视频数据;
其中,所述亮度平均值越高,与所述亮度平均值对应的预设的拍摄频率越高。
方案四:
提供一种计算机程序,包括计算机可读代码,当所述计算机可读代码在计算设备上运行时,导致所述计算设备执行如上所述的一种车载摄像设备的智能采集方法。
方案五:
提供一种计算机可读介质,其中存储了如上所述的计算机程序。
与现有技术相比,该发明一种车载摄像设备的智能采集方法、装置及行车记录仪具有如下有益效果:
该车载摄像设备的智能采集方法、装置及行车记录仪通过采集视频数据中的连续X帧的采样图像的亮度值并进而获取其亮度平均值来实时调整拍摄频率,进而获取较佳的视频数据,为使用者提供具有较大参考意义的记录数据。同时,该车载摄像设备的智能采集方法、装置及行车记录仪还在亮度平均值的基础上再次引入行车速度作为参考进而较佳的实现了实时调整拍摄频率的目的,在一定程度上进一步提高视频数据的参考意义。
该车载摄像设备的智能采集方法、装置及行车记录仪在提高拍摄频率时通过适当调整每帧图像的分辨率保证了处理器的运行速度,提高了处理器的使用寿命,在一定程度上也延长了摄像设备的使用年限。
上述说明仅是本发明技术方案的概述,为了能够更清楚了解本发明的技术手段,而可依照说明书的内容予以实施,并且为了让本发明的上述和其它目的、特征和优点能够更明显易懂,以下特举本发明的具体实施方式。
附图说明
通过阅读下文优选实施方式的详细描述,各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的,而并不认为是对本发明的限制。而且在整个附图中,用相同的参考符号表示相同的部件。在附图中:
图1示出了本发明一个实施例中车载摄像设备的智能采集方法的流程示意图;
图2示出了本发明一个实施例中车载摄像设备的智能采集方法中根据拍摄频率拍摄生成视频数据的流程示意图;
图3示出了本发明一个实施例中车载摄像设备的智能采集装置的模块示意图;
图4示意性地示出了用于执行根据本发明的方法的计算设备的框图;以及
图5示意性地示出了用于保持或者携带实现根据本发明的方法的程序代码的存储单元。
具体实施例
为了使本技术领域的人员更好地理解本发明方案,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述。
在本发明的说明书和权利要求书及上述附图中的描述的一些流程中,包含了按照特定顺序出现的多个操作,但是应该清楚了解,这些操作可以不按照其在本文中出现的顺序来执行或并行执行,操作的序号如101、102等,仅仅是用于区分开各个不同的操作,序号本身不代表任何的执行顺序。另外,这些流程可以包括更多或更少的操作,并且这些操作可以按顺序执行或并行执行。需要说明的是,本文中的“第一”、“第二”等描述,是用于区分不同的消息、设备、模块等,不代表先后顺序,也不限定“第一”和“第二”是不同的类型。
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
请参阅图1,在一些实施例中,提供了一种车载摄像设备的智能采集方法,其应用于车载摄像设备拍摄场面中,其中,车载摄像设备包括摄像机、手机、行车记录仪以及其他带有摄像功能的设备。
为了描述方便,本实施例以该方法应用于行车记录仪的摄像模式来举例说明,其中,该行车记录仪的技术方案为安霸芯片和嵌入操作系统进行设计。应当理解的是,行车记录仪的软硬件可以依据其他的设计方案,譬如说德州仪器的DM368。
在该实施例中,车载摄像设备的智能采集方法包括如下步骤102~106:
步骤102:根据拍摄频率拍摄生成视频数据,从所述视频数据中按照采样频率采样得到采样图像。
具体的,请参阅图2,图2示出了嵌入式系统中步骤102的流程图。如图2所示,上述根据拍摄频率拍摄生成视频数据包括如下步骤202~208:
步骤202:打开视频设备文件,进行视频采集的参数初始化。
为了给程序员提供一个简洁方便的与设备无关的文件模型,操作系统通常屏蔽硬件设备的特殊细节。譬如说,在嵌入式系统中,通常采用设备文件完成上述屏蔽过程,其中,设备文件的目的是使得输入输出设备使用起来更类似于文件。设备文件包括分为块设备文件和字符设备文件,其中,块设备文件是指那些可以随机存取的数据块组成的设备,譬如说磁盘;字符设备文件是指那些以字符流方式进行操作的设备,如摄像头。
在一些实施例中,上述行车记录仪采用标准V4L2驱动摄像头。如果只是插入一个摄像头,那么该摄像头对应的设备文件为/dev/video0;如果插入是两个,则分别为/dev/video1和/dev/video1;如果插入更多,则可以按顺序顺次建立设备文件。上述打开视频设备文件可以通过直接调用OPEN函数打开这些视频设备文件。
V4L2是LINUX操作系统下用于采集图片、视频和音频数据的应用程序编程接口,配合适当的视频采集设备和相应的驱动程序,可以实现图片、视频、音频等的采集。V4L2规范中不仅定义了通用应用程序编程接口元素、图像的格式、输入/输出方法、还定义了Linux内核驱动处理视频信息的一系列接口,这些接口包括:视频采 集接口、视频输出接口、视频覆盖/预览接口、视频输出覆盖接口以及编解码接口。
值得一提的是,上述摄像头为采用标准V4L2驱动的摄像头,也即是摄像头支持UVC,其中,UVC是微软与设备厂商联合推出的为USB视频捕获设备定义的协议标准,目前已成为USB协会标准之一。如今主流操作系统,如Windows XP SP2、Linux 2.4.6、Mac OS 10.5都已提供UVC设备驱动,因此符合UVC规格的硬件设备在不需要安装任何的驱动程序下即可在主机中正常使用。
在一些实施例中,当上述摄像头只有一个时,在Linux操作系统下,上述视频采集的参数初始化就是对与摄像头的设备文件对应的文件描述符FD_V4L2进行参数初始化。具体包括设置视频的采集窗口参数、设置视频点阵格式和点阵大小以及设置视频拍摄频率,其中,设置采集窗口就是设置时摄像头拍摄时的起始横坐标和纵坐标以及拍摄图像的宽度和高度等;设置视频点阵格式和点阵大小拍摄视频的格式等;设置视频拍摄频率就是设置平均每一帧所占的时间等。
在一些实施例中,视频采集的参数初始化可以通过IOCTL函数进行,其中IOCTL函数是设备驱动程序中对设备的输入输出通道进行管理的函数。
在一些实施例中,为了避免亮度和色度的相互干扰以及在降低色度的采样率而不至于对图像质量影响太大,上述拍摄视频的格式为YUV格式,其中,YUV被欧洲电视系统所采用的一种颜色编码方法,其中,Y表示亮度值,U和V表示的则是色度值。
应当理解的是,上述YUV是一个比较笼统地说法,针对它的具体排列方式,可以分为很多种具体的格式。YUV格式通常有两大类:打包格式和平面格式,其中,打包格式是将YUV分量存放在同一个数组中,通常是几个相邻的像素组成一个宏像素;平面格式是使用三个数组分开存放YUV三个分量。
值得一提的是,在实际中经常提出的YUV又称为YCbCr,该YCbCr是在世界数字组织视频标准研制过程中作为ITU-R BT1601建议的一部分,其实质上是YUV经过缩放和偏移的翻版。其中,Y与YUV中的Y含义一致,Cb、Cr同样也都指色彩。
步骤204:申请多个视频采集的帧缓冲区。
具体的,在嵌入式系统中,通过驱动程序在内存中申请几个帧缓冲区来存放视频数据。应用程序通过VIDIOC_REQBUFS申请若干个视频数据的帧缓冲区,申请帧缓冲区数量一般不低于3个,每个帧缓冲区存放一帧视频数据,这些帧缓冲区在内核空间。然后再通过VIDIOC_QUERYBUF查询到帧缓冲区在内核空间的长度和偏移量地址。最后通过MMAP()将申请到的内核空间帧缓冲区的地址映射到用户空间,这样就可以直接处理帧缓冲区的数据。其中,VIDIOC_REQBUFS是一标识符,用于内存的分配;VIDIOC_QUERYBUF也是一标识符,用于将把VIDIOC_REQBUFS中分配的数据缓存转换成物理地址;MMAP()是一种共享内存创建机制,其通过在磁盘上建立一个文件,每个进程存储器里面,单独开辟一个空间来进行映射。
在一些实施例中,上述申请多个视频采集的帧缓冲区为申请五个视频采集的帧缓冲区。
步骤206:将申请到的帧缓冲区在视频采集输入队列排队,并启动视频采集。
具体的,在嵌入式系统中,驱动程序在处理视频的过程中首先定义两个队列:视频采集输入队列和视频采集输出队列,其中,视频采集输入队列是等待驱动存放视频数据的队列;视频采集输出队列是驱动程序已经放入了视频数据的队列。当应用程序将上述帧缓冲区在视频采集输入队列排队后,才启动视频采集。
步骤208:驱动开始视频数据的采集,应用程序从视频采集输出队列取出帧缓冲区,处理完后,将帧缓冲区重新放入视频采集输入队列,循环往复采集连续的视频数据。
具体的,启动视频采集后,驱动程序开始采集一帧数据,把采集的数据放入视频采集输入队列的第一个帧缓冲区,一帧数据采集完成,也就是第一个帧缓冲区存满一帧数据后,驱动程序将该帧缓冲区移至视频采集输出队列,等待应用程序从输出队列取出。驱动程序接下来采集下一帧数据,放入第二个帧缓冲区,同样帧缓冲区存满下一帧数据后,被放入视频采集输出队列。
应用程序从视频采集输出队列中取出含有视频数据的帧缓冲区,处理帧缓冲区中的视频数据,如编码或压缩。最后,应用程序将处理完数据的帧缓冲区重新放入视频采集输入队列,这样可以循环采集。
上述处理帧缓冲区中的视频数据通过底层编码库实现H.264编码,譬如说NVIDIA公司的NVCUVENC库,该NVCUVENC库可以实现H.264的图形处理器编码,其接收原始YUV数据然后编码产生NAL单元。其中,H.264是由ITU-T视频编码专家组和ISO/IEC动态图像专家组联合组成的联合视频组提出的高度压缩数字视频编解码器标准。这个标准通常被称之为H.264/AVC或者AVC/H.264或者H.264/MPEG-4AVC或MPEG-4/H.264AVC;NAL单元是一个一定语法元素的可变长字节字符串,包括包含用来表示数据类型的一个字节的头信息以及若干整数字节的负荷数据,H.264的编码视频序列包括一系列的NAL单元。
在一些实施例中,上述从视频信号中按照采样频率采样得到采样图像则是从上述视频采集输出队列中含有视频数据的帧缓冲区中按照采样频率采样得到采样图像。
在一些实施例中,该采样频率可以根据行车速度进行设置,具体的,根据拍摄频率拍摄生成视频信号,从所述视频信号中按照采样频率采样得到采样图像之前,包括如下步骤:
获取行车速度;
基于所述行车速度的大小确定所述采样频率的大小;其中,行车速度越大,与所述行车速度对应采样频率的越高。
在一些实施例中,当行车速度为10KM/H时,采样频率为1帧/S;当行车速度为30KM/H时,采样频率为2帧/S。
步骤104:计算所述采样图像的亮度平均值;其中,所述采样图像的亮度平均值为连续X帧采样图像的亮度值的平均值,X为正整数。
在一些实施例中,考虑到拍摄视频的格式为YUV,因此,亮度值为YUV色彩空间的Y值,也即是说,采样图像的亮度平均值为连续X帧采样图像的Y值的平均值。
在一些实施例中,为了方便图像数据的处理,通过视频处理芯片将多种信号模式的视频信号转换为统一的RGB数据模式。那么,上述计算所述采样图像的亮度平均值包括以下步骤:
将连续X帧采样图像的RGB数据模式分别转为灰度图;
根据上述灰度图获取连续X帧采样图像的亮度值;
根据所述连续X帧采样图像的亮度值生成所述采样图像的亮度平均值。
其中,上述RGB数据模式是工业界的一种颜色标准,是通过对红、绿、蓝三个颜色通道的变化以及它们相互之间的叠加来得到各式各样的颜色的,RGB即是代表红、绿、蓝三个通道的颜色,这个标准几乎包括了人类视 力所能感知的所有颜色,是目前运用最广的颜色系统之一。
在一些实施例中,上述将连续X帧采样图像的RGB数据模式分别转为灰度图可以通过Gray=R×0.299+G×0.587+B×0.114这一著名心理学公式实现。
步骤106:根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率,并通过与所述亮度平均值对应的预设的拍摄频率拍摄生成视频数据;其中,所述亮度平均值越高,与所述亮度平均值对应的预设的拍摄频率越高。
可选的,在一些实施例中,在根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率之前包括:
预设多个亮度等级,为各个亮度等级设置相对应的拍摄频率。
上述根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率包括:,
确定所述亮度平均值的亮度等级;
根据所述亮度等级确定与所述亮度等级对应的预设的拍摄频率。
例如,预设5个亮度等级(单位均为流明/平方米):[0-10000]、[10000-20000]、[20000-30000]、[30000-40000]、[40000-50000],分别为这5个亮度等级预设相对应的拍摄频率(单位均为fps):15、24、25、30、60,则在车载摄像设备的智能采集方法中,当确定亮度平均值为8000流明/平方米时,则其对应的亮度等级为[0-10000],根据该亮度等级[0-10000]确定的拍摄频率为15fps。
值得一提的是,在上述例子中,考虑到随着外部发光强度的增加,照片的亮度值或者Y值也会相应增加以及描述的方便,因此,上述例子中采用表征亮度值或者Y值的光照度进行亮度等级的划分。应当理解的是,在后续的举例中也是采取这样的描述。可以理解的是,在一些以亮度值或者Y值预设5个亮度等级的实施例中,其亮度等级可以描述为[0-50]、[50-100]、[100-150]、[150-200]、[200-255],适应地,相应的亮度平均值也以Y值来表述。
考虑到实际汽车的行使,由于外部环境光的强度是不断变化的,因此采样图像的亮度平均值也会不断变化,当车载智能摄像设备的拍摄频率从8000流明/平方米变化到15000流明/平方米时,即从亮度等级[0-10000]变化到另一个亮度等级[10000-20000],适应地,车载智能摄像设备也会将拍摄频率调节为与亮度等级[10000-20000]相对应的拍摄频率24fps。
考虑到实际汽车行使时,特别是夜间行使时,其不断受到其他车辆发出的光干扰,这样就会引起车载摄像设备不停地调整拍摄频率,使得车载摄像设备超负荷运行,在一定程度上减弱了其使用寿命。
为了解决这个问题,在一些实施例中,将多个亮度等级预设为是不连续的,譬如说,相邻的亮度等级之间具有相同的区间间隔,通过这一区间间隔来缓冲上述其他车辆形成的光干扰,车载摄像设备超负荷运行。
例如,预设5个亮度等级(单位均为流明/平方米):[0-10000]、[12000-20000]、[22000-30000]、[32000-40000]、[42000-50000],相邻的亮度等级之间具有2000流明/平方米的区间间隔,分别为这5个亮度等级预设相对应的拍摄频率(单位均为fps):15、24、25、30、60,则在车载摄像设备的智能采集方法中,当车载智能摄像设备监测到亮度平均值从8000流明/平方米开始逐渐增加,当增加到11000流明/平方米时,拍摄频率维持不变,当继续增加到12000流明/平方米时,确认亮度平均值从亮度等级[0-10000]变化到亮度等级[10000-20000],车载智能摄像设备的拍摄频率调节为与亮度等级[10000-20000]对应的拍摄频率24fps。
在另一些实施例中,将多个亮度等级预设为连续的,也即相邻的亮度等级具有一个共同的临界亮度值,则确定所述预设亮度平均值的亮度等级包括:
当所述亮度平均值从一个亮度等级变化到相邻的亮度等级、且与两个亮度等级与共有的临界亮度值的差值超过预设亮度阈值时,则确定所述预设亮度平均值的亮度等级为所述相邻的亮度等级。
该实施例通过预设亮度阈值来缓冲上述其他车辆形成的光干扰,避免车载摄像设备超负荷运行。
例如,预设5个亮度等级(单位均为流明/平方米):[0-10000]、[10000-20000]、[20000-30000]、[30000-40000]、[40000-50000],分别为这5个亮度等级预设相对应的拍摄频率(单位均为fps):15、24、25、30、60,则在车载摄像设备的智能采集方法中,当车载智能摄像设备监测到亮度平均值从8000流明/平方米开始逐渐增加,当增加到10000流明/平方米时,拍摄频率维持不变,当继续增加到10500流明/平方米时,确认亮度平均值从亮度等级[0-10000]变化到亮度等级[10000-20000],车载智能摄像设备的拍摄频率调节为与亮度等级[10000-20000]对应的拍摄频率24fps。本实施例中预设亮度阈值的设置提供了判断亮度平均值是否进入新的亮度等级的标准,即与临界亮度值的差值超过该预设亮度阈值时亮度平均值才被视为较为稳定地变化到相应的亮度等级,并以此对车载智能摄像设备的拍摄频率进行调节,以避免亮度平均值在受到外界不规则干扰后所导致的拍摄频率的反复调整。
还有一些特殊情形下,譬如说汽车从地下车库到地上的过程中,采样图像的亮度平均值不断的在增长,总计跨越三个亮度等级,比如说在多个连续亮度等级情形下的亮度等级[0-10000]、亮度等级[10000-20000]以及亮度等级[20000-30000]或者多个不连续的亮度等级情形下的亮度等级[0-10000]、亮度等级[12000-20000]以及亮度等级[22000-30000]。在这个过程中,可以理解的是,该汽车在亮度等级[10000-20000]内的停留时间相对较短,容易知道,在该极短的时间内对车载智能摄像设备的拍摄频率的调节对于从地下车库到地上的过程中来说是没有意义的。
为解决该问题,在一些实施例中,当亮度平均值从一个亮度等级变化到相邻的亮度等级时,确定上述亮度平均值的亮度等级包括:
判断所述亮度平均值稳定在所述相邻的亮度等级的停留时间;
如果所述停留时间超过第一预设时间阈值时,则确定所述亮度平均值的亮度等级为所述相邻的亮度等级。
可选的,在一些实施例中,在根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率之前包括:
根据亮度大小预设多个亮度等级,为各个亮度等级设置相对应的拍摄频率区间段;
在各个亮度等级上根据速度大小预设多个速度等级,其中,各个速度等级在所述拍摄频率区间段中对应有各自的拍摄频率;速度越大,与所述速度对应拍摄频率越高。
上述根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率包括:
所述根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率包括:
确定所述亮度平均值的亮度等级,根据亮度等级确定与所述亮度等级对应的拍摄频率区间段;
获取行车速度,并根据所述行车速度确认速度等级,根据速度等级确定与所述速度等级对应的拍摄频率。
例如,预设5个亮度等级(单位均为流明/平方米):[0-10000]、[10000-20000]、[20000-30000]、[30000-40000]、[40000-50000],分别为这5个亮度等级预设相对应的拍摄频率区间段(单位均为fps):[10-20]、[20-30]、[30-40]、[40-50]、[50-60],则在车载摄像设备的智能采集方法中,当确定亮度平均值为8000流明/平方米时,则其对应的 亮度等级为[0-10000],根据该亮度等级[0-10000]确定的拍摄频率区间段为[10-20]。
同时,预设5个速度等级(单位均为千米/小时):[0-20]、[20-60]、[60-90]、[90-120]、[120-150],在上述预设的5个亮度等级对应的拍摄频率区间段内分别为这5个速度等级预设对应的拍摄频率,其中速度越大,与所述速度对应拍摄频率越高,譬如说在与亮度等级[10000-20000]对应的拍摄频率区间段[20-30]上为速度等级[0-20]、速度等级[20-60]、速度等级[60-90]、速度等级[90-120]以及速度等级[120-150]顺次预设对应的拍摄频率(单位均为fps):22、24、26、28、30。则在车载摄像设备的智能采集方法中,当确定亮度平均值为8000流明/平方米时,则其对应的亮度等级为[10000-20000],根据该亮度等级[10000-20000]确定的拍摄频率区间段[20-30],当确定的行车速度为40千米/小时,则对应的速度等级为[20-60],该拍摄频率区间段[20-30]对应于速度等级为[20-60]的拍摄频率为24fps。
考虑到实际汽车行使时,其行车速度是不断受到外界的干扰,譬如路况,这样就会引起车载摄像设备不停地调整速度等级以及拍摄频率,使得车载摄像设备超负荷运行,在一定程度上减弱了其使用寿命。
为了解决这个问题,在一些实施例中,可以采用类似上述亮度等级的方式进行处理。
具体的,将多个速度等级预设为不连续的,相邻的速度等级之间具有相同的区间间隔,通过这一区间间隔来缓冲上述路况等带来的速度干扰。
在另一些实施例中,还可以通过预设速度阈值来缓冲上述路况形成的速度干扰,具体的,将多个速度等级预设为连续的,相邻的速度等级具有一个共同的临界速度值,则根据行车速度确认速度等级包括:
当所述速度从一个速度等级变化到相邻的速度等级、且与两个速度等级与共有的临界速度值的差值超过预设速度阈值时,则确定所述预设速度的速度等级为所述相邻的速度等级。
还有一些特殊情形下,譬如说汽车在加速行驶的过程中,有时可能需要跨越多个速度等级,比如说汽车从10千米/小时加速到100千米/小时,就需要跨越速度等级[0-20]、速度等级[20-60]、速度等级[60-90]以及速度等级[90-120]。可以理解的是,在这个过程中,该汽车在速度等级[0-20]、速度等级[20-60]以及速度等级[60-90]内的停留时间相对较短,容易知道,在该极短的时间内对车载智能摄像设备的拍摄频率的调节是没有意义的。
为解决该问题,在一些实施例中,当行车速度从一个速度等级变化到相邻的速度等级时,根据所述行车速度确认速度等级包括:
判断所述行车速度稳定在所述相邻的速度等级的停留时间;
如果所述停留时间超过第二预设时间阈值时,则确定所述行车速度的速度等级为所述相邻的速度等级。
在一些实施例中,考虑到提高拍摄频率会对处理器的处理速度造成一定的压力,为了解决这个问题,可以在提高拍摄频率时,根据车载摄像设备中的处理器的处理速度相应降低每帧图像的分辨率。
请参阅图3,基于同一个发明构思,在一个实施例中,还提供车载摄像设备的智能采集装置,包括:采样模块3001、均值模块3003以及调整模块3005,其中:
采样模块3001,用于根据拍摄频率拍摄生成视频数据,从所述视频数据中按照采样频率采样得到采样图像;
均值模块3003,用于计算所述采样图像的亮度平均值;其中,所述采样图像的亮度平均值为连续X帧采样图像的亮度值的平均值,X为正整数;
调整模块3005,用于根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率,并通过与所述亮 度平均值对应的预设的拍摄频率拍摄生成视频数据;其中,所述亮度平均值越高,与所述亮度平均值对应的预设的拍摄频率越高。
优选地,亮度值为YUV色彩空间的Y值。
上述装置还包括:
第一预设模块,用于在根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率之前预设多个亮度等级,为各个亮度等级设置相对应的拍摄频率。
在一些实施例中,调整模块3005包括:
亮度等级单元,用于确定所述亮度平均值的亮度等级;
第一频率单元,用于根据所述亮度等级确定与所述亮度等级对应的预设的拍摄频率。
在一些实施例中,多个亮度等级是不连续的,相邻的亮度等级之间具有相同的区间间隔。
在一些实施例中,多个亮度等级是连续的,相邻的亮度等级具有一个共同的临界亮度值,上述亮度等级单元包括:
第一亮度确定单元:用于当所述亮度平均值从一个亮度等级变化到相邻的亮度等级、且与两个亮度等级与共有的临界亮度值的差值超过预设亮度阈值时,确定所述亮度平均值的亮度等级为所述相邻的亮度等级。
在一些实施例中,亮度等级单元包括:
亮度判断单元:用于当亮度平均值从一个亮度等级变化到相邻的亮度等级时判断所述亮度平均值稳定在所述相邻的亮度等级的停留时间;
第二亮度确定单元:用于在所述停留时间超过第一预设时间阈值时,确定所述亮度平均值的亮度等级为所述相邻的亮度等级。
上述装置包括:
第二预设模块,用于在根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率之前根据亮度大小预设多个亮度等级,为各个亮度等级设置相对应的拍摄频率区间段;
第三预设模块,用于在各个亮度等级上根据速度大小预设多个速度等级,其中,各个速度等级在所述拍摄频率区间段中对应有各自的拍摄频率;速度越大,与所述速度对应拍摄频率越高。
在一些实施例中,调整模块3005包括:
区间段单元,用于确定所述亮度平均值的亮度等级,根据亮度等级确定与所述亮度等级对应的拍摄频率区间段;
第二频率单元,用于获取行车速度,并根据所述行车速度确认速度等级,根据速度等级确定与所述速度等级对应的拍摄频率。
在一些实施例中,多个速度等级是不连续的,相邻的速度等级之间具有相同的区间间隔。
在一些实施例中,多个速度等级是连续的,相邻的速度等级具有一个共同的临界速度值,所述第二频率单元包括:
第一速度确定单元:用于在所述行车速度从一个速度等级变化到相邻的速度等级、且与两个速度等级与共有的临界速度值的差值超过预设速度阈值时,确定所述行车速度的速度等级为所述相邻的速度等级。
在一些实施例中,第二频率单元包括:
速度判断单元:用于在行车速度从一个速度等级变化到相邻的速度等级时判断所述行车速度稳定在所述相邻的速度等级的停留时间;
第二速度确定单元:用于在所述停留时间超过第二预设时间阈值时,确定所述行车速度的速度等级为所述相邻的速度等级。
上述装置包括:
车速获取模块,用于在根据拍摄频率拍摄生成视频信号,从所述视频信号中按照采样频率采样得到采样图像之前获取行车速度;
采样频率模块,用于基于所述行车速度的大小确定所述采样频率的大小;其中,行车速度越大,与所述行车速度对应采样频率的越高。
上述装置还包括:
分辨率模块,用于在提高拍摄频率时,根据车载摄像设备中的处理器的处理速度相应降低每帧图像的分辨率。
基于同一个发明构思,还提供一种行车记录仪,包括
一个或多个处理器、
存储器、
摄像头、
一个或多个应用程序,其中,
存储器可用于存储软件程序以及模块,处理器通过运行存储在存储器的软件程序以及模块,从而执行行车记录仪的各种功能应用以及数据处理。存储器可主要包括存储程序区和存储数据区,其中,存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图像播放功能等)等;存储数据区可存储根据行车记录仪的使用所创建的数据(比如音频数据、电话本等)等。此外,存储器可以包括高速随机存取存储器,还可以包括非易失性存储器,例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件;
显示器可用于显示由用户输入的信息或提供给用户的信息以及行车记录仪的各种菜单。显示器可包括显示面板,可选的,可以采用液晶显示器(Liquid Crystal Display,LCD)、有机发光二极管(Organic Light-Emitting Diode,OLED)等形式来配置显示面板。进一步的,触控面板可覆盖显示面板,当触控面板检测到在其上或附近的触摸操作后,传送给处理器以确定触摸事件的类型,随后处理器根据触摸事件的类型在显示面板上提供相应的视觉输出。
上述一个或多个应用程序被存储在上述存储器中并被配置为由上述一个或多个处理器执行,上述一个或多个程序配置用于:
根据拍摄频率拍摄生成视频数据,从所述视频数据中按照采样频率采样得到采样图像;
计算所述采样图像的亮度平均值;其中,所述采样图像的亮度平均值为连续X帧采样图像的亮度值的平均值,X为正整数;
根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率,并通过与所述亮度平均值对应的预设 的拍摄频率拍摄生成视频数据;
其中,所述亮度平均值越高,与所述亮度平均值对应的预设的拍摄频率越高。
优选地,所述亮度值为YUV色彩空间的Y值,其中Y值的范围是0~255。
在一些实施例中,根据亮度平均值确定与所述亮度平均值对应的预设的拍摄频率之前包括:
预设多个亮度等级,为各个亮度等级设置相对应的拍摄频率。
在一些实施例中,根据亮度平均值确定与所述亮度平均值对应的预设的拍摄频率包括:
确定所述亮度平均值的亮度等级;
根据所述亮度等级确定与所述亮度等级对应的预设的拍摄频率。
在一些实施例中,多个亮度等级是不连续的,相邻的亮度等级之间具有相同的区间间隔。
在一些实施例中,多个亮度等级是连续的,相邻的亮度等级具有一个共同的临界亮度值,确定所述亮度平均值的亮度等级包括:
当亮度平均值从一个亮度等级变化到相邻的亮度等级、且与两个亮度等级与共有的临界亮度值的差值超过预设亮度阈值时,则确定所述亮度平均值的亮度等级为所述相邻的亮度等级。
在一些实施例中,当亮度平均值从一个亮度等级变化到相邻的亮度等级时,确定所述亮度平均值的亮度等级包括:
判断亮度平均值稳定在相邻的亮度等级的停留时间;
如果停留时间超过第一预设时间阈值时,则确定亮度平均值的亮度等级为相邻的亮度等级。
在一些实施例中,根据亮度平均值确定与所述亮度平均值对应的预设的拍摄频率之前包括:
根据亮度大小预设多个亮度等级,为各个亮度等级设置相对应的拍摄频率区间段;
在各个亮度等级上根据速度大小预设多个速度等级,其中,各个速度等级在所述拍摄频率区间段中对应有各自的拍摄频率;速度越大,与所述速度对应拍摄频率越高。
在一些实施例中,根据亮度平均值确定与所述亮度平均值对应的预设的拍摄频率包括:
确定亮度平均值的亮度等级,根据亮度等级确定与所述亮度等级对应的拍摄频率区间段;
获取行车速度,并根据行车速度确认速度等级,根据速度等级确定与所述速度等级对应的拍摄频率。
在一些实施例中,多个速度等级是不连续的,相邻的速度等级之间具有相同的区间间隔。
在一些实施例中,多个速度等级是连续的,相邻的速度等级具有一个共同的临界速度值,根据行车速度确认速度等级包括:
当行车速度从一个速度等级变化到相邻的速度等级、且与两个速度等级与共有的临界速度值的差值超过预设速度阈值时,则确定行车速度的速度等级为所述相邻的速度等级。
在一些实施例中,当行车速度从一个速度等级变化到相邻的速度等级时,根据所述行车速度确认速度等级包括:
判断所述行车速度稳定在所述相邻的速度等级的停留时间;
如果停留时间超过第二预设时间阈值时,则确定行车速度的速度等级为相邻的速度等级。
在一些实施例中,根据拍摄频率拍摄生成视频信号,从所述视频信号中按照采样频率采样得到采样图像之 前,还包括步骤:
获取行车速度;
基于行车速度的大小确定采样频率的大小;
其中,行车速度越大,与行车速度对应采样频率的越高。
在一些实施例中,该行车记录仪包括:在提高拍摄频率时,根据车载摄像设备中的处理器的处理速度相应降低每帧图像的分辨率。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统,装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统,装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本发明各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成,该程序可以存储于一计算机可读存储介质中,存储介质可以包括:只读存储器(ROM,Read Only Memory)、随机存取存储器(RAM,Random Access Memory)、磁盘或光盘等。
与现有技术相比,该发明一种车载摄像设备的智能采集方法、装置及行车记录仪具有如下有益效果:
该车载摄像设备的智能采集方法、装置及行车记录仪通过采集视频数据中的连续X帧的采样图像的亮度值并进而获取其亮度平均值来实时调整拍摄频率,进而获取较佳的视频数据,为使用者提供具有较大参考意义的记录数据。同时,该车载摄像设备的智能采集方法、装置及行车记录仪还在亮度平均值的基础上再次引入行车速度作为参考进而较佳的实现了实时调整拍摄频率的目的,在一定程度上进一步提高视频数据的参考意义。
该车载摄像设备的智能采集方法、装置及行车记录仪在提高拍摄频率时通过适当调整每帧图像的分辨率保证了处理器的运行速度,提高了处理器的使用寿命,在一定程度上也延长了摄像设备的使用年限。
以上对本发明所提供的一种信息发送的方法、装置及设备进行了详细介绍,对于本领域的一般技术人员,依据本发明实施例的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本发明的限制。
本发明的各个部件实施例可以以硬件实现,或者以在一个或者多个处理器上运行的软件模块实现,或者以它们的组合实现。本领域的技术人员应当理解,可以在实践中使用微处理器或者数字信号处理器 (DSP)来实现根据本发明实施例的车载摄像设备的智能采集装置和行车记录仪中的一些或者全部部件的一些或者全部功能。本发明还可以实现为用于执行这里所描述的方法的一部分或者全部的设备或者装置程序(例如,计算机程序和计算机程序产品)。这样的实现本发明的程序可以存储在计算机可读介质上,或者可以具有一个或者多个信号的形式。这样的信号可以从因特网网站上下载得到,或者在载体信号上提供,或者以任何其他形式提供。
例如,图4示出了可以实现根据本发明的车载摄像设备的智能采集方法的计算设备。该计算设备传统上包括处理器410和以存储器420形式的计算机程序产品或者计算机可读介质。存储器420可以是诸如闪存、EEPROM(电可擦除可编程只读存储器)、EPROM、硬盘或者ROM之类的电子存储器。存储器420具有用于执行上述方法中的任何方法步骤的程序代码431的存储空间430。例如,用于程序代码的存储空间430可以包括分别用于实现上面的方法中的各种步骤的各个程序代码431。这些程序代码可以从一个或者多个计算机程序产品中读出或者写入到这一个或者多个计算机程序产品中。这些计算机程序产品包括诸如硬盘,紧致盘(CD)、存储卡或者软盘之类的程序代码载体。这样的计算机程序产品通常为如参考图5所述的便携式或者固定存储单元。该存储单元可以具有与图4的计算设备中的存储器420类似布置的存储段、存储空间等。程序代码可以例如以适当形式进行压缩。通常,存储单元包括计算机可读代码431’,即可以由例如诸如410之类的处理器读取的代码,这些代码当由计算设备运行时,导致该计算设备执行上面所描述的方法中的各个步骤。
本文中所称的“一个实施例”、“实施例”或者“一个或者多个实施例”意味着,结合实施例描述的特定特征、结构或者特性包括在本发明的至少一个实施例中。此外,请注意,这里“在一个实施例中”的词语例子不一定全指同一个实施例。
在此处所提供的说明书中,说明了大量具体细节。然而,能够理解,本发明的实施例可以在没有这些具体细节的情况下被实践。在一些实例中,并未详细示出公知的方法、结构和技术,以便不模糊对本说明书的理解。
应该注意的是上述实施例对本发明进行说明而不是对本发明进行限制,并且本领域技术人员在不脱离所附权利要求的范围的情况下可设计出替换实施例。在权利要求中,不应将位于括号之间的任何参考符号构造成对权利要求的限制。单词“包含”不排除存在未列在权利要求中的元件或步骤。位于元件之前的单词“一”或“一个”不排除存在多个这样的元件。本发明可以借助于包括有若干不同元件的硬件以及借助于适当编程的计算机来实现。在列举了若干装置的单元权利要求中,这些装置中的若干个可以是通过同一个硬件项来具体体现。单词第一、第二、以及第三等的使用不表示任何顺序。可将这些单词解释为名称。
此外,还应当注意,本说明书中使用的语言主要是为了可读性和教导的目的而选择的,而不是为了解释或者限定本发明的主题而选择的。因此,在不偏离所附权利要求书的范围和精神的情况下,对于本技术领域的普通技术人员来说许多修改和变更都是显而易见的。对于本发明的范围,对本发明所做的公开是说明性的,而非限制性的,本发明的范围由所附权利要求书限定。

Claims (44)

  1. 一种车载摄像设备的智能采集方法,其特征在于,包括:
    根据拍摄频率拍摄生成视频数据,从所述视频数据中按照采样频率采样得到采样图像;
    计算所述采样图像的亮度平均值;其中,所述采样图像的亮度平均值为连续X帧采样图像的亮度值的平均值,X为正整数;
    根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率,并通过与所述亮度平均值对应的预设的拍摄频率拍摄生成视频数据;
    其中,所述亮度平均值越高,与所述亮度平均值对应的预设的拍摄频率越高。
  2. 根据权利要求1所述的车载摄像设备的智能采集方法,其特征在于,所述亮度值为YUV色彩空间的Y值。
  3. 根据权利要求1所述的车载摄像设备的智能采集方法,其特征在于,所述根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率之前包括:
    预设多个亮度等级,为各个亮度等级设置相对应的拍摄频率。
  4. 根据权利要求3所述的车载摄像设备的智能采集方法,其特征在于,所述根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率包括:
    确定所述亮度平均值的亮度等级;
    根据所述亮度等级确定与所述亮度等级对应的预设的拍摄频率。
  5. 根据权利要求4所述的车载摄像设备的智能采集方法,其特征在于,所述多个亮度等级是不连续的,相邻的亮度等级之间具有相同的区间间隔。
  6. 根据权利要求4所述的车载摄像设备的智能采集方法,其特征在于,所述多个亮度等级是连续的,相邻的亮度等级具有一个共同的临界亮度值,所述确定所述亮度平均值的亮度等级包括:
    当所述亮度平均值从一个亮度等级变化到相邻的亮度等级、且与两个亮度等级与共有的临界亮度值的差值超过预设亮度阈值时,则确定所述亮度平均值的亮度等级为所述相邻的亮度等级。
  7. 根据权利要求4所述的车载摄像设备的智能采集方法,其特征在于,当亮度平均值从一个亮度等级变化到相邻的亮度等级时,所述确定所述亮度平均值的亮度等级包括:
    判断所述亮度平均值稳定在所述相邻的亮度等级的停留时间;
    如果所述停留时间超过第一预设时间阈值时,则确定所述亮度平均值的亮度等级为所述相邻的亮度等级。
  8. 根据权利要求1所述的车载摄像设备的智能采集方法,其特征在于,所述根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率之前包括:
    根据亮度大小预设多个亮度等级,为各个亮度等级设置相对应的拍摄频率区间段;
    在各个亮度等级上根据速度大小预设多个速度等级,其中,各个速度等级在所述拍摄频率区间段中对 应有各自的拍摄频率;速度越大,与所述速度对应拍摄频率越高。
  9. 根据权利要求8所述的车载摄像设备的智能采集方法,其特征在于,所述根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率包括:
    确定所述亮度平均值的亮度等级,根据亮度等级确定与所述亮度等级对应的拍摄频率区间段;
    获取行车速度,并根据所述行车速度确认速度等级,根据速度等级确定与所述速度等级对应的拍摄频率。
  10. 根据权利要求9所述的车载摄像设备的智能采集方法,其特征在于,所述多个速度等级是不连续的,相邻的速度等级之间具有相同的区间间隔。
  11. 根据权利要求9所述的车载摄像设备的智能采集方法,其特征在于,所述多个速度等级是连续的,相邻的速度等级具有一个共同的临界速度值,所述根据所述行车速度确认速度等级包括:
    当所述行车速度从一个速度等级变化到相邻的速度等级、且与两个速度等级与共有的临界速度值的差值超过预设速度阈值时,则确定所述行车速度的速度等级为所述相邻的速度等级。
  12. 根据权利要求9所述的车载摄像设备的智能采集方法,其特征在于,当行车速度从一个速度等级变化到相邻的速度等级时,所述根据所述行车速度确认速度等级包括:
    判断所述行车速度稳定在所述相邻的速度等级的停留时间;
    如果所述停留时间超过第二预设时间阈值时,则确定所述行车速度的速度等级为所述相邻的速度等级。
  13. 根据权利要求1所述的车载摄像设备的智能采集方法,其特征在于,所述根据拍摄频率拍摄生成视频信号,从所述视频信号中按照采样频率采样得到采样图像之前,还包括步骤:
    获取行车速度;
    基于所述行车速度的大小确定所述采样频率的大小;
    其中,行车速度越大,与所述行车速度对应采样频率的越高。
  14. 根据权利要求1所述的车载摄像设备的智能采集方法,其特征在于,在提高拍摄频率时,根据车载摄像设备中的处理器的处理速度相应降低每帧图像的分辨率。
  15. 一种车载摄像设备的智能采集装置,其特征在于,包括:
    采样模块,用于根据拍摄频率拍摄生成视频数据,从所述视频数据中按照采样频率采样得到采样图像;
    均值模块,用于计算所述采样图像的亮度平均值;其中,所述采样图像的亮度平均值为连续X帧采样图像的亮度值的平均值,X为正整数;
    调整模块,用于根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率,并通过与所述亮度平均值对应的预设的拍摄频率拍摄生成视频数据;其中,所述亮度平均值越高,与所述亮度平均值对应的预设的拍摄频率越高。
  16. 根据权利要求15所述的车载摄像设备的智能采集装置,其特征在于,所述亮度值为YUV色彩空间的Y值。
  17. 根据权利要求15所述的车载摄像设备的智能采集装置,其特征在于,所述装置还包括:
    第一预设模块,用于在根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率之前预设多个亮度等级,为各个亮度等级设置相对应的拍摄频率。
  18. 根据权利要求15所述的车载摄像设备的智能采集装置,其特征在于,所述调整模块包括:
    亮度等级单元,用于确定所述亮度平均值的亮度等级;
    第一频率单元,用于根据所述亮度等级确定与所述亮度等级对应的预设的拍摄频率。
  19. 根据权利要求18所述的车载摄像设备的智能采集装置,其特征在于,所述多个亮度等级是不连续的,相邻的亮度等级之间具有相同的区间间隔。
  20. 根据权利要求18所述的车载摄像设备的智能采集装置,其特征在于,所述多个亮度等级是连续的,相邻的亮度等级具有一个共同的临界亮度值,所述亮度等级单元包括:
    第一亮度确定单元:用于当所述亮度平均值从一个亮度等级变化到相邻的亮度等级、且与两个亮度等级与共有的临界亮度值的差值超过预设亮度阈值时,确定所述亮度平均值的亮度等级为所述相邻的亮度等级。
  21. 根据权利要求18所述的车载摄像设备的智能采集装置,其特征在于,所述亮度等级单元包括:
    亮度判断单元:用于当亮度平均值从一个亮度等级变化到相邻的亮度等级时判断所述亮度平均值稳定在所述相邻的亮度等级的停留时间;
    第二亮度确定单元:用于在所述停留时间超过第一预设时间阈值时,确定所述亮度平均值的亮度等级为所述相邻的亮度等级。
  22. 根据权利要求15所述的车载摄像设备的智能采集装置,其特征在于,所述装置还包括:
    第二预设模块,用于在根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率之前根据亮度大小预设多个亮度等级,为各个亮度等级设置相对应的拍摄频率区间段;
    第三预设模块,用于在各个亮度等级上根据速度大小预设多个速度等级,其中,各个速度等级在所述拍摄频率区间段中对应有各自的拍摄频率;速度越大,与所述速度对应拍摄频率越高。
  23. 根据权利要求22所述的车载摄像设备的智能采集装置,其特征在于,所述调整模块包括:
    区间段单元,用于确定所述亮度平均值的亮度等级,根据亮度等级确定与所述亮度等级对应的拍摄频率区间段;
    第二频率单元,用于获取行车速度,并根据所述行车速度确认速度等级,根据速度等级确定与所述速度等级对应的拍摄频率。
  24. 根据权利要求23所述的车载摄像设备的智能采集装置,其特征在于,所述多个速度等级是不连续的,相邻的速度等级之间具有相同的区间间隔。
  25. 根据权利要求23所述的车载摄像设备的智能采集装置,其特征在于,所述多个速度等级是连续的,相邻的速度等级具有一个共同的临界速度值,所述第二频率单元包括:
    第一速度确定单元:用于在所述行车速度从一个速度等级变化到相邻的速度等级、且与两个速度等级与共有的临界速度值的差值超过预设速度阈值时,确定所述行车速度的速度等级为所述相邻的速度等级。
  26. 根据权利要求23所述的车载摄像设备的智能采集装置,其特征在于,所述第二频率单元包括:
    速度判断单元:用于在行车速度从一个速度等级变化到相邻的速度等级时判断所述行车速度稳定在所述相邻的速度等级的停留时间;
    第二速度确定单元:用于在所述停留时间超过第二预设时间阈值时,确定所述行车速度的速度等级为所述相邻的速度等级。
  27. 根据权利要求15所述的车载摄像设备的智能采集装置,其特征在于,所述装置还包括:
    车速获取模块,用于在根据拍摄频率拍摄生成视频信号,从所述视频信号中按照采样频率采样得到采样图像之前获取行车速度;
    采样频率模块,用于基于所述行车速度的大小确定所述采样频率的大小;其中,行车速度越大,与所述行车速度对应采样频率的越高。
  28. 根据权利要求15所述的车载摄像设备的智能采集装置,其特征在于,该装置还包括:
    分辨率模块,用于在提高拍摄频率时,根据车载摄像设备中的处理器的处理速度相应降低每帧图像的分辨率。
  29. 一种行车记录仪,其特征在于,包括:
    一个或多个处理器;
    存储器;
    摄像头;
    一个或多个应用程序,其中所述一个或多个应用程序被存储在所述存储器中并被配置为由所述一个或多个处理器执行,所述一个或多个程序配置用于:
    根据拍摄频率拍摄生成视频数据,从所述视频数据中按照采样频率采样得到采样图像;
    计算所述采样图像的亮度平均值;其中,所述采样图像的亮度平均值为连续X帧采样图像的亮度值的平均值,X为正整数;
    根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率,并通过与所述亮度平均值对应的预设的拍摄频率拍摄生成视频数据;
    其中,所述亮度平均值越高,与所述亮度平均值对应的预设的拍摄频率越高。
  30. 根据权利要求29所述的行车记录仪,其特征在于,所述亮度值为YUV色彩空间的Y值。
  31. 根据权利要求29所述的行车记录仪,其特征在于,所述根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率之前包括:
    预设多个亮度等级,为各个亮度等级设置相对应的拍摄频率。
  32. 根据权利要求31所述的行车记录仪,其特征在于,所述根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率包括:
    确定所述亮度平均值的亮度等级;
    根据所述亮度等级确定与所述亮度等级对应的预设的拍摄频率。
  33. 根据权利要求32所述的行车记录仪,其特征在于,所述多个亮度等级是不连续的,相邻的亮度等级之间具有相同的区间间隔。
  34. 根据权利要求32所述的行车记录仪,其特征在于,所述多个亮度等级是连续的,相邻的亮度等级具有一个共同的临界亮度值,所述确定所述亮度平均值的亮度等级包括:
    当所述亮度平均值从一个亮度等级变化到相邻的亮度等级、且与两个亮度等级与共有的临界亮度值的差值超过预设亮度阈值时,则确定所述亮度平均值的亮度等级为所述相邻的亮度等级。
  35. 根据权利要求32所述的行车记录仪,其特征在于,当亮度平均值从一个亮度等级变化到相邻的亮度等级时,所述确定所述亮度平均值的亮度等级包括:
    判断所述亮度平均值稳定在所述相邻的亮度等级的停留时间;
    如果所述停留时间超过第一预设时间阈值时,则确定所述亮度平均值的亮度等级为所述相邻的亮度等级。
  36. 根据权利要求29所述的行车记录仪,其特征在于,所述根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率之前包括:
    根据亮度大小预设多个亮度等级,为各个亮度等级设置相对应的拍摄频率区间段;
    在各个亮度等级上根据速度大小预设多个速度等级,其中,各个速度等级在所述拍摄频率区间段中对应有各自的拍摄频率;速度越大,与所述速度对应拍摄频率越高。
  37. 根据权利要求36所述的行车记录仪,其特征在于,所述根据所述亮度平均值确定与所述亮度平均值对应的预设的拍摄频率包括:
    确定所述亮度平均值的亮度等级,根据亮度等级确定与所述亮度等级对应的拍摄频率区间段;
    获取行车速度,并根据所述行车速度确认速度等级,根据速度等级确定与所述速度等级对应的拍摄频率。
  38. 根据权利要求37所述的行车记录仪,其特征在于,所述多个速度等级是不连续的,相邻的速度等级之间具有相同的区间间隔。
  39. 根据权利要求37所述的行车记录仪,其特征在于,所述多个速度等级是连续的,相邻的速度等级具有一个共同的临界速度值,所述根据所述行车速度确认速度等级包括:
    当所述行车速度从一个速度等级变化到相邻的速度等级、且与两个速度等级与共有的临界速度值的差值超过预设速度阈值时,则确定所述行车速度的速度等级为所述相邻的速度等级。
  40. 根据权利要求37所述的行车记录仪,其特征在于,当行车速度从一个速度等级变化到相邻的速度等级时,所述根据所述行车速度确认速度等级包括:
    判断所述行车速度稳定在所述相邻的速度等级的停留时间;
    如果所述停留时间超过第二预设时间阈值时,则确定所述行车速度的速度等级为所述相邻的速度等级。
  41. 根据权利要求29所述的行车记录仪,其特征在于,所述根据拍摄频率拍摄生成视频信号,从所述视频信号中按照采样频率采样得到采样图像之前,还包括步骤:
    获取行车速度;
    基于所述行车速度的大小确定所述采样频率的大小;
    其中,行车速度越大,与所述行车速度对应采样频率的越高。
  42. 根据权利要求29所述的行车记录仪,其特征在于,在提高拍摄频率时,根据车载摄像设备中的处理器的处理速度相应降低每帧图像的分辨率。
  43. 一种计算机程序,包括计算机可读代码,当所述计算机可读代码在计算设备上运行时,导致所述计算设备执行根据权利要求1-14中的任一个所述的一种车载摄像设备的智能采集方法。
  44. 一种计算机可读介质,其中存储了如权利要求43所述的计算机程序。
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CN106027901A (zh) * 2016-06-24 2016-10-12 北京奇虎科技有限公司 一种车载摄像设备的智能采集方法、装置及行车记录仪
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CN109101454B (zh) * 2018-07-03 2020-09-29 建荣半导体(深圳)有限公司 一种自定义的usbcam调试接口的通信方法、系统及电子设备
CN109005578B (zh) * 2018-08-14 2021-06-01 广东小天才科技有限公司 一种用于降低视频通话功耗的方法及可穿戴设备
US11721005B2 (en) * 2018-08-31 2023-08-08 Mitsubishi Electric Corporation Automobile use video image recording device and automobile use graphical image recognition device
CN112584030B (zh) * 2019-09-27 2022-06-14 中移物联网有限公司 一种行车视频录制方法及电子设备
CN111599202A (zh) * 2020-05-27 2020-08-28 四川邮电职业技术学院 一种车载通信终端及车载通信系统
CN111739193B (zh) * 2020-06-17 2021-12-17 重庆蓝岸通讯技术有限公司 一种行车记录仪图像显示方法及行车记录仪
CN113422902B (zh) * 2021-05-31 2023-01-06 惠州华阳通用电子有限公司 一种摄像头帧率调节方法
CN116055702A (zh) * 2022-12-27 2023-05-02 歌尔科技有限公司 头戴设备的控制方法、装置、头戴设备及存储介质
CN116193120A (zh) * 2023-01-17 2023-05-30 深圳市锐明技术股份有限公司 编码参数调整方法、装置、车载记录仪及可读存储介质

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030107664A1 (en) * 2000-11-27 2003-06-12 Ryoji Suzuki Method for driving solid-state imaging device and camera
CN101729777A (zh) * 2009-10-22 2010-06-09 华为终端有限公司 数字图像采集的方法和设备
CN102790862A (zh) * 2012-07-30 2012-11-21 成都西可科技有限公司 一种动态提升手机前摄像头效果的方法
CN104980640A (zh) * 2014-04-02 2015-10-14 中兴通讯股份有限公司 一种行车摄像的方法及装置
CN105227858A (zh) * 2015-10-30 2016-01-06 维沃移动通信有限公司 一种图像处理方法及移动终端
CN105554376A (zh) * 2015-12-03 2016-05-04 北京奇虎科技有限公司 一种车载智能摄像装置及其摄像帧率的调节方法
CN106027901A (zh) * 2016-06-24 2016-10-12 北京奇虎科技有限公司 一种车载摄像设备的智能采集方法、装置及行车记录仪

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102547157B (zh) * 2011-12-31 2014-07-23 南京理工大学 自适应相关双采样相位校准方法
CN102629988A (zh) * 2012-03-31 2012-08-08 博康智能网络科技股份有限公司 一种摄像头自动控制方法及装置
US9800794B2 (en) * 2013-06-03 2017-10-24 Magna Electronics Inc. Vehicle vision system with enhanced low light capabilities
CN103428522B (zh) * 2013-08-07 2017-04-19 北京汉邦高科数字技术股份有限公司 一种提高网络摄像机低照度图像质量的方法
CN104917976B (zh) * 2015-06-05 2018-08-21 北京大恒图像视觉有限公司 一种相机自动曝光和自动增益调节方法
CN105323466B (zh) * 2015-06-25 2019-01-29 维沃移动通信有限公司 一种基于场景的拍摄方法及终端

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030107664A1 (en) * 2000-11-27 2003-06-12 Ryoji Suzuki Method for driving solid-state imaging device and camera
CN101729777A (zh) * 2009-10-22 2010-06-09 华为终端有限公司 数字图像采集的方法和设备
CN102790862A (zh) * 2012-07-30 2012-11-21 成都西可科技有限公司 一种动态提升手机前摄像头效果的方法
CN104980640A (zh) * 2014-04-02 2015-10-14 中兴通讯股份有限公司 一种行车摄像的方法及装置
CN105227858A (zh) * 2015-10-30 2016-01-06 维沃移动通信有限公司 一种图像处理方法及移动终端
CN105554376A (zh) * 2015-12-03 2016-05-04 北京奇虎科技有限公司 一种车载智能摄像装置及其摄像帧率的调节方法
CN106027901A (zh) * 2016-06-24 2016-10-12 北京奇虎科技有限公司 一种车载摄像设备的智能采集方法、装置及行车记录仪

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112584586A (zh) * 2020-10-12 2021-03-30 山东理工大学 一种基于5g通讯/物联网技术的智能路灯系统
CN112258885A (zh) * 2020-10-20 2021-01-22 平安国际智慧城市科技股份有限公司 到站提醒方法、装置、电子设备及存储介质
CN112258885B (zh) * 2020-10-20 2022-12-06 深圳赛安特技术服务有限公司 到站提醒方法、装置、电子设备及存储介质
CN114913622A (zh) * 2021-02-10 2022-08-16 博泰车联网科技(上海)股份有限公司 行车记录仪的视频显示方法、系统和计算机存储介质
CN115185711A (zh) * 2022-09-06 2022-10-14 湖北芯擎科技有限公司 基于虚拟摄像头的数据交互方法、装置、电子设备及介质
CN115185711B (zh) * 2022-09-06 2023-10-10 湖北芯擎科技有限公司 基于虚拟摄像头的数据交互方法、装置、电子设备及介质

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