WO2017092445A1 - 视频监控设备的工作模式的切换 - Google Patents

视频监控设备的工作模式的切换 Download PDF

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Publication number
WO2017092445A1
WO2017092445A1 PCT/CN2016/097409 CN2016097409W WO2017092445A1 WO 2017092445 A1 WO2017092445 A1 WO 2017092445A1 CN 2016097409 W CN2016097409 W CN 2016097409W WO 2017092445 A1 WO2017092445 A1 WO 2017092445A1
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Prior art keywords
mode
working mode
target
current working
video monitoring
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PCT/CN2016/097409
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English (en)
French (fr)
Inventor
余恒乐
徐琼
陈晓雷
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浙江宇视科技有限公司
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Priority to US15/774,974 priority Critical patent/US10630900B2/en
Priority to ES16869756T priority patent/ES2963066T3/es
Priority to EP16869756.3A priority patent/EP3358823B1/en
Priority to PL16869756.3T priority patent/PL3358823T3/pl
Publication of WO2017092445A1 publication Critical patent/WO2017092445A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • H04N23/667Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/10Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/10Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
    • H04N23/11Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths for generating image signals from visible and infrared light wavelengths
    • 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
    • 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
    • H04N23/72Combination of two or more compensation controls
    • 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
    • H04N23/73Circuitry for compensating brightness variation in the scene by influencing the exposure time
    • 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
    • H04N23/76Circuitry for compensating brightness variation in the scene by influencing the image signals
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00Indexing scheme for image analysis or image enhancement
    • G06T2207/10Image acquisition modality
    • G06T2207/10016Video; Image sequence
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00Indexing scheme for image analysis or image enhancement
    • G06T2207/10Image acquisition modality
    • G06T2207/10048Infrared image
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00Indexing scheme for image analysis or image enhancement
    • G06T2207/30Subject of image; Context of image processing
    • G06T2207/30232Surveillance
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00Image analysis
    • G06T7/20Analysis of motion
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00Image analysis
    • G06T7/50Depth or shape recovery

Definitions

  • the invention belongs to the technical field of video monitoring equipment, and particularly relates to switching of an operation mode of a video monitoring device.
  • Video surveillance is an important part of the security system. Video surveillance is widely used in many occasions because of its intuitive, accurate, timely and rich information content. In recent years, with the rapid development of computers, networks, and image processing and transmission technologies, the trend of popularization of video surveillance has become more and more obvious.
  • PIR Passive Infrared
  • Video surveillance equipment using PIR technology is called PIR camera.
  • the PIR camera can switch to black and white mode and automatically turn on the infrared light in low light conditions.
  • the motion detection mechanism of the PIR camera or the PIR detector detects that the monitoring target is within a certain range of the camera, the PIR camera automatically switches to the color mode to capture or record.
  • the exposure calculation needs to be performed again.
  • the right end of the exposure line can be used as a starting point, or the exposure parameters can be adjusted from some special points of the exposure line.
  • the exposure line refers to an adjustment order of exposure elements such as a shutter, an aperture, and a gain during exposure adjustment.
  • the point Pa corresponds to the exposure parameter that should be used in the color mode.
  • the exposure parameter can be adjusted from the right end of the exposure line or the special point Pb, and the Pa point is gradually approached by the metering and exposure calculation.
  • the monitoring target may have left the monitoring range, so that the color image of the monitoring target cannot be captured in time.
  • An object of the present disclosure is to provide a method and apparatus for switching an operation mode of a video monitoring device, which avoids the problem that the video monitoring device fails to perform the calculation of the exposure parameter, so that the scene to be recorded cannot be captured in time, and the exposure parameter can be quickly adjusted.
  • a method for switching an operation mode of a video monitoring device comprising: reading a current working mode of the video monitoring device, recording the current work The exposure parameter of the mode; in the case where the operation mode switching is to be performed, the target exposure value of the target operation mode to be switched is set, and the exposure parameter of the target operation mode is calculated in combination with the exposure parameter of the current operation mode.
  • the working mode includes a black and white mode and a color mode.
  • the method further comprises: determining whether the working mode switching is required according to the current working mode and the ambient lighting amount.
  • determining whether to perform the operation mode switching according to the current working mode and the ambient illumination amount including: when the current working mode is the black and white mode, when the ambient light quantity is higher than a certain
  • the threshold value it is determined that it is necessary to switch to the color mode.
  • the current operation mode is the color mode
  • the ambient light amount is lower than a certain threshold
  • the method further includes: determining, according to a distance between the monitoring object and the video monitoring device, whether a working mode switching is required.
  • determining whether the working mode switching needs to be performed according to the distance between the monitoring object and the video monitoring device includes: monitoring the distance between the object and the video monitoring device by motion detection or passive infrared detection; When the detected distance is within a certain range, it is determined that it is necessary to switch to the color mode.
  • the target exposure value of the target working mode to be switched to is set, and the exposure parameter of the target working mode is calculated in combination with the exposure parameter of the current working mode, including: calculating according to the following formula Exposure parameters of the target working mode:
  • T2 is an exposure value of the current working mode
  • G2 is a gain of the current working mode
  • S2 is a shutter of the current working mode
  • R2 is an aperture of the current working mode
  • P2 is the current working mode.
  • K2 is the filter transmittance of the current working mode
  • T1 is the target exposure value of the target working mode
  • G1 is the gain of the target working mode
  • S1 is the target working
  • R1 is the aperture of the target working mode
  • P1 is the white fill light power of the target working mode
  • K1 is the filter transmittance of the target working mode.
  • the method further includes: setting the shutter S1 of the target working mode to one of a frame rate of the video monitoring device, and adjusting according to the calculated gain G1 of the target working mode.
  • the gain of the video monitoring device In the case of setting the shutter S1 of the target operating mode, the gain of the video monitoring device can be directly adjusted to achieve fast switching.
  • the method for switching the working mode of the video monitoring device predicts the exposure parameter of the target working mode according to the exposure parameter of the current working mode, and does not need to perform metering and adjustment according to the exposure line step by step, and the switching speed is improved. After detecting the entry range of the monitoring target, take a snapshot or video in time.
  • Figure 1 is a schematic diagram of adjustment of exposure parameters
  • FIG. 2 is a schematic flowchart of a working mode switching method of a video monitoring device according to the present disclosure
  • FIG. 3 is a schematic diagram showing the hardware structure of the working mode switching device of the present disclosure.
  • FIG. 4 is a functional block diagram of the operation mode switching logic corresponding to the switching method shown in FIG. 2.
  • the present example provides a method of switching the operation mode of a video monitoring device, which is applicable to a video monitoring device such as a PIR camera.
  • a video monitoring device such as a PIR camera.
  • the operation mode can be switched.
  • the method can predict the exposure parameter of the target working mode to be switched according to the exposure parameter of the current working mode, so as to achieve the purpose of quickly adjusting the exposure.
  • the method for switching the working mode of the video monitoring device may include steps S1-S3:
  • Step S1 Read the current working mode of the video monitoring device, and record the exposure parameters of the current working mode.
  • the working mode of the PIR camera includes a black and white mode and a color mode.
  • the PIR camera when the ambient amount of illumination is below a certain threshold, the PIR camera will switch to black and white mode, and when the ambient light level is above a certain threshold, the PIR camera will switch to color mode.
  • the black and white mode is generally suitable for use at night. In this working mode, the camera turns off the white light, turns on the infrared light, and collects black and white video images to ensure the image effect.
  • the color mode is generally suitable for use during the day. In this working mode, the camera turns off the infrared light, turns on the white light, and collects color video recording to ensure the image effect.
  • the camera when the camera works in black and white mode, if it is detected that the monitoring target is within a certain range of the camera, the camera can automatically switch to the color mode for capturing or recording to obtain the color video image of the monitoring target. And, after the monitoring target leaves the range, the camera can switch back to black and white mode.
  • the video surveillance device can switch between different modes of operation.
  • the video monitoring device can automatically switch from the black and white mode to the color mode.
  • quickly adjusting the exposure parameters ensures that the color image of the monitoring target is captured in time.
  • the exposure parameters of the target operating mode can be predicted based on the exposure parameters of the current working mode, and then the predicted exposure parameters can be directly used for switching without performing the measurement. Light and step by step adjustment.
  • step S2 it is determined whether the working mode is to be switched. If the switching is required, the process proceeds to step S3, otherwise the video monitoring device continues to work in the current working mode.
  • whether to switch the working mode of the video monitoring device can be determined according to the amount of ambient illumination. Wherein, when the ambient light quantity is below a certain threshold, the video monitoring device can switch to the black and white mode, and when the ambient light quantity is above a certain threshold, the video monitoring device can switch to the color mode.
  • whether to switch the operating mode of the video monitoring device can be determined by determining the distance between the monitoring target and the camera.
  • the method of determining the distance includes a motion detection method or a PIR infrared detection method.
  • the video monitoring device can automatically switch to the color mode, and after the monitoring target leaves the range, switch back to the original working mode according to the amount of illumination.
  • Step S3 setting a target exposure value of the target working mode, calculating an exposure parameter of the target working mode by combining the target exposure value with an exposure parameter of the current working mode, and setting the video monitoring device according to the calculated exposure parameter
  • the current working mode is switched to the target working mode.
  • the exposure parameter of the target operating mode may be calculated according to the exposure parameter of the current working mode.
  • the exposure parameters of the current working mode include: exposure value, gain, shutter, aperture, fill light power, and transmittance of the filter.
  • the exposure parameter of the target mode is calculated by setting the target exposure value of the target operation mode.
  • the target exposure value is T1
  • the gain is G1
  • the shutter is S1
  • the aperture is R1
  • the white fill light power is P1
  • the filter transmittance K1.
  • the target exposure value is T2
  • the gain is G2
  • the shutter is S2
  • the aperture is R2
  • the white fill light power is P2
  • the filter transmittance is K2.
  • T1 ⁇ *G1*S1*R1*P1*K1 (1)
  • T2 ⁇ *G2*S2*R2*P2*K2 (2)
  • T1, T2, R1, P1, K1, G2, S2, R2, P2, K2 are known.
  • the quantity, G1, S1 is an unknown quantity.
  • G1 can be calculated in the case of setting S1, or S1 can be calculated in the case of setting G1.
  • the video monitoring device is switched from the current working mode to the target working mode according to the calculated exposure parameter. For example, when the PIR camera switches to the color mode, the infrared light can be turned off, the white light is turned on, and the exposure parameters of the obtained color mode are calculated to perform exposure, thereby completing the snapping or recording operation.
  • the gain of the PIR camera is adjusted according to the calculated gain G1 of the target operating mode, thereby completing the switching.
  • the exposure parameters of different video monitoring devices are different.
  • some devices do not have a fill light, in which case the fill light power is not included in the exposure equivalent principle formula. That is, the specific parameter item in the formula for calculating the exposure parameter of the present disclosure may be increased or decreased without affecting the technical effects of the present disclosure.
  • the exposure parameter of the target working mode is directly calculated according to the exposure parameter of the current working mode, and it is not necessary to gradually perform the metering and exposure calculation according to the exposure line to gradually adjust the switching speed.
  • Improve, can capture or record in time after detecting the target of the monitoring target.
  • the method is not limited to a PIR camera, but can be applied to other optical imaging devices.
  • the present disclosure can provide a switching device for switching an operating mode of a video monitoring device.
  • the switching device 300 can include a processor 310 and a machine readable storage medium 320, wherein the processor 310 and the machine readable storage medium 320 are typically interconnected by an internal bus 330.
  • the switching device 300 may also include an external interface 340 to enable communication with other devices or components.
  • the machine readable storage medium 320 can be: RAM (Radom Access Memory), volatile memory, non-volatile memory, flash memory, storage drive (eg, hard drive), solid state Hard disk, any type of storage disk (such as a compact disc, DVD, etc.), or similar storage medium, or a combination thereof.
  • RAM Random Access Memory
  • volatile memory non-volatile memory
  • flash memory storage drive (eg, hard drive), solid state Hard disk, any type of storage disk (such as a compact disc, DVD, etc.), or similar storage medium, or a combination thereof.
  • storage drive eg, hard drive
  • solid state Hard disk any type of storage disk (such as a compact disc, DVD, etc.), or similar storage medium, or a combination thereof.
  • the working mode switching logic 400 includes the following modules:
  • a recording module 410 configured to read a current working mode of the video monitoring device, and record an exposure parameter of the current working mode
  • the detecting module 420 is configured to determine, according to the current working mode and the ambient light quantity, or according to the distance between the monitoring object and the video monitoring device, whether the working mode switching needs to be performed;
  • the switching module 430 is configured to set a target exposure value of the target working mode to be switched to when the working mode is to be switched, and calculate an exposure parameter of the target working mode according to the exposure parameter of the current working mode.
  • the mode of operation includes a black and white mode and a color mode.
  • the detecting module 420 is configured to perform the following operations when determining whether the working mode switching is required according to the current working mode and the ambient lighting amount:
  • the current working mode is a black and white mode
  • the ambient light amount is higher than a certain threshold, it is determined that it is necessary to switch to a color mode
  • the current working mode is the color mode
  • the ambient light amount is lower than a certain threshold, it is determined that it is necessary to switch to the black and white mode.
  • the detecting module 420 is configured to perform the following operations when determining whether the working mode switching is required according to the distance between the monitoring object and the video monitoring device:
  • the switching module 430 is configured to perform the following operations:
  • the exposure parameters of the target working mode are calculated according to the following formula:
  • T2 is an exposure value of the current working mode
  • G2 is a gain of the current working mode
  • S2 is a shutter of the current working mode
  • R2 is an aperture of the current working mode
  • P2 is the current working mode.
  • K2 is the filter transmittance of the current working mode
  • T1 is the target exposure value of the target working mode
  • G1 is the gain of the target working mode
  • S1 is the target working
  • R1 is the aperture of the target working mode
  • P1 is the white fill light power of the target working mode
  • K1 is the filter transmittance of the target working mode.
  • the switching module 430 is further configured to perform the following operations:
  • the gain of the video monitoring device is adjusted according to the calculated gain G1 of the target operating mode.
  • the working mode switching logic 400 of the present disclosure can be understood as machine executable instructions stored in the machine readable storage medium 320.
  • the processor 310 on the switching device 300 of the present disclosure executes the working mode switching logic 400
  • the processor 310 executes the following by executing a machine executable instruction corresponding to the working mode switching logic 400 saved on the machine readable storage medium 320. operating:
  • the target exposure value of the target operation mode to be switched is set, and the exposure parameter of the target operation mode is calculated in combination with the exposure parameter of the current operation mode.
  • the mode of operation includes a black and white mode and a color mode.
  • machine executable instructions further cause the processor to perform the following operations:
  • Whether the work mode switching needs to be performed is determined according to the current working mode and the ambient light amount.
  • the machine executable instructions cause the processor to perform the following operations when determining whether a work mode switch is required according to the current working mode and the ambient light amount:
  • the current working mode is a black and white mode
  • the ambient light amount is higher than a certain threshold, it is determined that it is necessary to switch to the color mode.
  • the current working mode is the color mode
  • the ambient light amount is lower than a certain threshold, it is determined that it is necessary to switch to the black and white mode.
  • machine executable instructions further cause the processor to perform the following operations:
  • Whether the working mode switching needs to be performed is determined according to the distance between the monitoring object and the video monitoring device.
  • the machine executable instructions cause the processor to perform the following operations when determining whether a work mode switch is required based on a distance between the monitored object and the video monitoring device:
  • the target exposure value of the target working mode to be switched to is set, and combined with the current working mode
  • the machine executable instructions cause the processor to perform the following operations:
  • the exposure parameters of the target working mode are calculated according to the following formula:
  • T2 is the exposure value of the current working mode
  • G2 is the gain of the current working mode
  • S2 is the shutter of the current working mode
  • R2 is the aperture of the current working mode
  • P2 is the white fill light power of the current working mode
  • K2 is the filter transmittance of the current working mode
  • T1 is the target exposure value of the target working mode
  • G1 is the gain of the target working mode
  • S1 is a shutter of the target working mode
  • R1 is the aperture of the target working mode
  • P1 is the white fill light power of the target working mode
  • K1 is the filter transmittance of the target operating mode.
  • machine executable instructions further cause the processor to perform the following operations:
  • the gain of the video monitoring device is adjusted according to the calculated gain G1 of the target operating mode.

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  • Engineering & Computer Science (AREA)
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  • Signal Processing (AREA)
  • Studio Devices (AREA)
  • Exposure Control For Cameras (AREA)
  • Blocking Light For Cameras (AREA)

Abstract

本公开公开了一种用于切换视频监控设备的工作模式的方法及装置,所述方法先读取视频监控设备的当前工作模式,记录当前工作模式的曝光参数;然后在要进行工作模式切换的情况下,设定要切换至的目标工作模式的目标曝光值,并结合当前工作模式的曝光参数计算目标工作模式的曝光参数。本公开的装置包括记录模块、检测模块和切换模块。本公开的方法及装置直接根据当前工作模式的曝光参数来预测目标工作模式的曝光参数,不需要经过测光和曝光计算来逐步调整曝光参数,大大提高了切换速度。

Description

视频监控设备的工作模式的切换 技术领域
本发明属于视频监控设备技术领域,尤其涉及视频监控设备的工作模式的切换。
背景技术
视频监控是安全防范系统的重要组成部分,视频监控以其直观、准确、及时和信息内容丰富而广泛应用于许多场合。近年来,随着计算机、网络以及图像处理、传输技术的飞速发展,视频监控的普及化趋势越来越明显。
被动红外PIR(Passive Infrared)技术可应用于视频监控设备,采用PIR技术的视频监控设备被称为PIR摄像机。PIR摄像机在低照环境下可切换到黑白模式并自动开启红外灯。当PIR摄像机的运动检测机制或者PIR探测器检测到监控目标距离摄像机在一定的范围内时,PIR摄像机会自动切换到彩色模式,从而进行抓拍或者录像。
PIR摄像机在切换到彩色模式后,需要重新进行曝光计算。重新进行曝光计算时,可以曝光线的右端为起点,或者从曝光线的某些特殊点开始调整曝光参数。其中,曝光线是指,曝光调整时,例如快门、光圈、增益等的曝光要素的调整顺序。如图1所示,点Pa对应于彩色模式下应该使用的曝光参数,可从曝光线的右端或特殊点Pb开始调整曝光参数,经过测光和曝光计算逐步逼近Pa点。但由于测光和曝光计算需要时间,因此当曝光计算完成后,监控目标可能已经离开了监控范围,从而无法及时抓拍到监控目标的彩色图像。
因此,如何在PIR摄像机切换到彩色模式前就预测出要用的曝光参数就显得至关重要。
发明内容
本公开的目的是提供一种用于切换视频监控设备的工作模式的方法及装置,避免视频监控设备重新进行曝光参数计算导致无法及时抓拍到所要记录的场景的问题,能够快速调整曝光参数。
为了实现上述目的,根据本公开的一个方面,提供了一种用于切换视频监控设备的工作模式的方法,所述方法包括:读取所述视频监控设备的当前工作模式,记录所述当前工作模式的曝光参数;在要进行工作模式切换的情况下,设定要切换至的目标工作模式的目标曝光值,并结合所述当前工作模式的曝光参数计算所述目标工作模式的曝光参数。
对于上述方法,根据一示例,所述工作模式包括黑白模式和彩色模式。
对于上述方法,根据一示例,该方法还包括:根据所述当前工作模式和环境光照量判断是否需要进行工作模式切换。
对于上述方法,根据一示例,根据所述当前工作模式和环境光照量判断是否要进行工作模式切换,包括:在所述当前工作模式为黑白模式的情况下,当所述环境光照量高于一定阈值时,判断为需要切换为彩色模式;在所述当前工作模式为彩色模式的情况下,当所述环境光照量低于一定阈值时,判断为需要切换为黑白模式。
对于上述方法,根据一示例,该方法还包括:根据监控对象与所述视频监控设备之间的距离来判断是否需要进行工作模式切换。
对于上述方法,根据一示例,根据监控对象与所述视频监控设备之间的距离来判断是否需要进行工作模式切换,包括:通过运动检测或被动红外检测监控对象与所述视频监控设备的距离;当检测到的所述距离在一定的范围内时,判断为需要切换为彩色模式。
对于上述方法,根据一示例,所述设定要切换至的目标工作模式的目标曝光值,并结合所述当前工作模式的曝光参数计算所述目标工作模式的曝光参数,包括:根据如下公式计算所述目标工作模式的曝光参数:
Figure PCTCN2016097409-appb-000001
其中,T2为所述当前工作模式的曝光值,G2为所述当前工作模式的增益,S2为所述当前工作模式的快门,R2为所述当前工作模式的光圈,P2为所述当前工作模式的白光补光灯功率,K2为所述当前工作模式的滤光片透过率,T1为所述目标工作模式的目标曝光值,G1为所述目标工作模式的增益,S1为所述目标工作模式的快门,R1为所述目标工作模式的光圈,P1为所述目标工作模式的白光补光灯功率,K1为所述目标工作模式的滤光片透过率。
对于上述方法,根据一示例,该方法还包括:将所述目标工作模式的快门S1设置为所述视频监控设备的帧率分之一,根据计算得到的所述目标工作模式的增益G1,调节所述视频监控设备的增益。在设定目标工作模式的快门S1的情况下,直接调整视频监控设备的增益即可实现快速地切换。
本公开提出的一种用于切换视频监控设备的工作模式的方法,根据当前工作模式的曝光参数预测目标工作模式的曝光参数,不需要根据曝光线逐步进行测光与调整,切换速度提高,能够在检测到监控目标进入范围后,及时进行抓拍或录像。
附图说明
图1为曝光参数调整的示意图;
图2为本公开的视频监控设备的工作模式切换方法的示意性流程图;
图3为本公开的工作模式切换装置的硬件结构示意图;
图4为与图2所示的切换方法对应的工作模式切换逻辑的功能模块示意图。
具体实施方式
下面结合附图和示例对本公开的技术方案做进一步详细说明,以下示例不构成对本公开的限定。
本示例提供一种视频监控设备的工作模式的切换方法,该方法适用于诸如PIR摄像机的视频监控设备。以PIR摄像机为例,当PIR摄像机在检测到光照量变化时,或在检测到监控目标距离PIR摄像机在一定范围内时,可进行工作模式的切换。该方法可以根据当前工作模式的曝光参数预测出要切换至的目标工作模式的曝光参数,以达到快速调整曝光的目的。
如图2所示,根据本示例的一种视频监控设备的工作模式的切换方法,可包括步骤S1-S3:
步骤S1、读取视频监控设备的当前工作模式,并记录当前工作模式的曝光参数。
仍以PIR摄像机为例,PIR摄像机的工作模式包括黑白模式和彩色模式。一般情况下,当环境光照量(amount of illumination)低于一定阈值时,PIR摄像机会切换到黑白模式,而在环境光照量高于一定阈值时,PIR摄像机会切换到彩色模式。黑白模式一般适合在夜间使用,在此工作模式下,摄像机关闭白光灯,开启红外灯,采集黑白视频图像以保证图像效果。而彩色模式一般适合在白天使用,在此工作模式下,摄像机关闭红外灯,开启白光灯,采集彩色视频录像以保证图像效果。
同时,当摄像机工作在黑白模式下时,如果检测到有监控目标距离摄像机在一定的范围内,则摄像机可自动切换到彩色模式进行抓拍或者录像,以获得监控目标的彩色视频图像。并且,在监控目标离开该范围后,摄像机可切换回黑白模式。
因此,视频监控设备可在不同工作模式之间切换。当检测到有监控目标距离摄像机在一定的范围内时,视频监控设备可从黑白模式自动切换到彩色模式。此时,快速调整曝光参数能够保证及时拍摄到监控目标的彩色图像。在本示例中,可以根据当前工作模式的曝光参数预测出目标工作模式的曝光参数,然后直接采用预测出的曝光参数进行切换,而无需进行测 光和逐步调整。
步骤S2、判断是否要进行工作模式切换,如果需要进行切换则进入步骤S3,否则视频监控设备继续工作在当前工作模式。
在一个示例中,可以根据环境光照量来判断是否进行视频监控设备的工作模式的切换。其中,当环境光照量低于一定阈值时,视频监控设备可切换到黑白模式,而在环境光照量高于一定阈值时,视频监控设备可切换到彩色模式。
在另一示例中,可以通过确定监控目标与摄像机的距离来判断是否进行视频监控设备的工作模式的切换。所述距离的确定方法有运动检测法或PIR红外检测法。当确定监控目标距离摄像机在一定的范围内时,视频监控设备可自动切换到彩色模式,而在监控目标离开范围后,重新根据光照量切换回原来的工作模式。
步骤S3、设定目标工作模式的目标曝光值,通过结合该目标曝光值与当前工作模式的曝光参数来计算目标工作模式的曝光参数,并根据所计算出的曝光参数将所述视频监控设备从当前工作模式切换到目标工作模式。
在本示例中,当在步骤S2中判断出需要切换视频监控设备的工作模式时,可以根据当前工作模式的曝光参数来计算目标工作模式的曝光参数。
具体地,当前工作模式的曝光参数包括:曝光值、增益、快门、光圈、补光灯功率、滤光片的透过率。通过设定目标工作模式的目标曝光值,来计算目标模式的曝光参数。
计算过程如下:
假设在彩色模式下,目标曝光值为T1,增益为G1,快门为S1,光圈为R1,白光补光灯功率为P1,滤光片透过率为K1。
假设在黑白模式下,目标曝光值为T2,增益为G2,快门为S2,光圈为R2,白光补光灯功率为P2,滤光片透过率为K2。
根据曝光等效原理,有如下公式:
T1=λ*G1*S1*R1*P1*K1   (1)
T2=λ*G2*S2*R2*P2*K2   (2)
其中,λ为常数。
当由黑白模式切换到彩色模式时,T1,T2,R1,P1,K1,G2,S2,R2,P2,K2为已知 量,G1,S1为未知量。
由于T1、T2非零,由公式(1)与公式(2)可以得到:
Figure PCTCN2016097409-appb-000002
从而在设定S1的情况下可以计算得到G1,或在设定G1的情况下可以计算得到S1。根据计算得到的曝光参数将视频监控设备从当前的工作模式切换到目标工作模式。例如,PIR摄像机在切换到彩色模式时,可以关闭红外灯,开启白光灯,以计算得到的彩色模式的曝光参数来进行曝光,从而完成抓拍或者录像动作。
在本示例中,可将目标工作模式的快门S1设置为摄像机帧率分之一,假设帧率为f,则S1=1/f。根据计算得到的目标工作模式的增益G1,调节PIR摄像机的增益,从而完成切换。
同理,当由彩色模式切换到黑白模式时,其计算原理相同,这里不再赘述。
需要说明的是,不同视频监控设备的曝光参数不同。例如,有些设备没有补光灯,在这种情况下,其曝光等效原理公式中不包括补光灯功率。即本公开计算曝光参数的公式中的具体参数项可以增加或减少,不会影响本公开的技术效果。
可见,无论是从黑白模式切换到彩色模式,还是从彩色模式切换到黑白模式,只需预先设定目标工作模式的目标曝光值,即可通过上述公式计算得到目标工作模式的曝光参数。
容易理解的是,本示例中,在进行模式切换时,目标工作模式的曝光参数根据当前工作模式的曝光参数直接计算得到,不需要根据曝光线逐步进行测光与曝光计算来逐步调整,切换速度提高,能够在检测到监控目标进入范围后,及时进行抓拍或录像。
在以上示例中,以PIR摄像机为例对根据本公开用于切换视频监控设备的工作模式的方法给出了描述。但是,该方法不限于PIR摄像机,而可应用于其他光学成像装置。
本公开可提供一种用于切换视频监控设备的工作模式的切换装置。如图3所示,所述切换装置300可包括处理器310以及机器可读存储介质320,其中,处理器310和机器可读存储介质320通常借由内部总线330相互连接。在其他可能的实现方式中,所述切换装置300还可能包括外部接口340,以能够与其他设备或者部件进行通信。
在不同的例子中,所述机器可读存储介质320可以是:RAM(Radom Access Memory,随机存取存储器)、易失存储器、非易失性存储器、闪存、存储驱动器(如硬盘驱动器)、固态硬盘、任何类型的存储盘(如光盘、DVD等),或者类似的存储介质,或者它们的组合。
进一步地,机器可读存储介质320上存储有与工作模式切换逻辑400对应的机器可执行指令。从功能上划分,所述工作模式切换逻辑400包括如下模块:
记录模块410,用于读取所述视频监控设备的当前工作模式,记录所述当前工作模式的曝光参数;
检测模块420,用于根据所述当前工作模式和环境光照量、或根据监控对象与所述视频监控设备之间的距离,判断是否需要进行工作模式切换;
切换模块430,用于在要进行工作模式切换的情况下,设定要切换至的目标工作模式的目标曝光值,并结合所述当前工作模式的曝光参数计算所述目标工作模式的曝光参数。
根据一个例子,所述工作模式包括黑白模式和彩色模式。
根据一个例子,所述检测模块420被构造为,在根据所述当前工作模式和环境光照量判断是否需要进行工作模式切换时,执行如下操作:
在所述当前工作模式为黑白模式的情况下,当所述环境光照量高于一定阈值时,判断为需要切换为彩色模式;
在所述当前工作模式为彩色模式的情况下,当所述环境光照量低于一定阈值时,判断为需要切换为黑白模式。
根据一个例子,所述检测模块420被构造为,在根据监控对象与所述视频监控设备之间的距离判断是否需要进行工作模式切换时,执行如下操作:
通过运动检测或被动红外检测监控对象与所述视频监控设备的距离,
当检测到的所述距离在一定的范围内时,判断为需要切换为彩色模式。
根据一个例子,所述切换模块430被构造为执行如下操作:
根据如下公式计算所述目标工作模式的曝光参数:
Figure PCTCN2016097409-appb-000003
其中,T2为所述当前工作模式的曝光值,G2为所述当前工作模式的增益,S2为所述当前工作模式的快门,R2为所述当前工作模式的光圈,P2为所述当前工作模式的白光补光灯功率,K2为所述当前工作模式的滤光片透过率,T1为所述目标工作模式的目标曝光值,G1为所述目标工作模式的增益,S1为所述目标工作模式的快门,R1为所述目标工作模式的光圈,P1为所述目标工作模式的白光补光灯功率,K1为所述目标工作模式的滤光片透过率。
根据一个例子,所述切换模块430还被构造为执行如下操作:
将所述目标工作模式的快门S1设置为所述视频监控设备的帧率分之一,
根据计算得到的所述目标工作模式的增益G1,调节所述视频监控设备的增益。
下面以软件实现为例,进一步描述切换装置300如何执行该工作模式切换逻辑400。在该例子中,本公开的工作模式切换逻辑400可理解为存储在机器可读存储介质320中的机器可执行指令。当本公开的切换装置300上的处理器310执行该工作模式切换逻辑400时,该处理器310通过调用机器可读存储介质320上保存的工作模式切换逻辑400对应的机器可执行指令来执行如下操作:
读取所述视频监控设备的当前工作模式,记录所述当前工作模式的曝光参数;
在要进行工作模式切换的情况下,设定要切换至的目标工作模式的目标曝光值,并结合所述当前工作模式的曝光参数计算所述目标工作模式的曝光参数。
根据一个例子,所述工作模式包括黑白模式和彩色模式。
根据一个例子,所述机器可执行指令还促使所述处理器执行以下操作:
根据所述当前工作模式和环境光照量判断是否需要进行工作模式切换。
根据一个例子,在根据所述当前工作模式和环境光照量判断是否需要进行工作模式切换时,所述机器可执行指令促使所述处理器执行以下操作:
在所述当前工作模式为黑白模式的情况下,当所述环境光照量高于一定阈值时,判断为需要切换为彩色模式,
在所述当前工作模式为彩色模式的情况下,当所述环境光照量低于一定阈值时,判断为需要切换为黑白模式。
根据一个例子,所述机器可执行指令还促使所述处理器执行以下操作:
根据监控对象与所述视频监控设备之间的距离来判断是否需要进行工作模式切换。
根据一个例子,在根据监控对象与所述视频监控设备之间的距离来判断是否需要进行工作模式切换时,所述机器可执行指令促使所述处理器执行以下操作:
通过运动检测或被动红外检测监控对象与所述视频监控设备的距离,
当检测到的所述距离在一定的范围内时,判断为需要切换为彩色模式。
根据一个例子,在设定要切换至的目标工作模式的目标曝光值,并结合所述当前工作模 式的曝光参数计算所述目标工作模式的曝光参数时,所述机器可执行指令促使所述处理器执行以下操作:
根据如下公式计算所述目标工作模式的曝光参数:
Figure PCTCN2016097409-appb-000004
其中,T2为所述当前工作模式的曝光值,
G2为所述当前工作模式的增益,
S2为所述当前工作模式的快门,
R2为所述当前工作模式的光圈,
P2为所述当前工作模式的白光补光灯功率,
K2为所述当前工作模式的滤光片透过率,
T1为所述目标工作模式的目标曝光值,
G1为所述目标工作模式的增益,
S1为所述目标工作模式的快门,
R1为所述目标工作模式的光圈,
P1为所述目标工作模式的白光补光灯功率,
K1为所述目标工作模式的滤光片透过率。
根据一个例子,所述机器可执行指令还促使所述处理器执行以下操作:
将所述目标工作模式的快门S1设置为所述视频监控设备的帧率分之一,
根据计算得到的所述目标工作模式的增益G1,调节所述视频监控设备的增益。
以上示例仅用以说明本公开的技术方案而非对其进行限制,在不背离本公开精神及其实质的情况下,熟悉本领域的技术人员当可根据本公开作出各种相应的改变和变形,但这些相应的改变和变形都应属于本公开所附的权利要求的保护范围。

Claims (16)

  1. 一种用于切换视频监控设备的工作模式的方法,包括:
    读取所述视频监控设备的当前工作模式,记录所述当前工作模式的曝光参数;
    在要进行工作模式切换的情况下,设定要切换至的目标工作模式的目标曝光值,并结合所述当前工作模式的曝光参数计算所述目标工作模式的曝光参数。
  2. 根据权利要求1所述的方法,其中,所述工作模式包括黑白模式和彩色模式。
  3. 根据权利要求2所述的方法,还包括:
    根据所述当前工作模式和环境光照量判断是否需要进行工作模式切换。
  4. 根据权利要求3所述的方法,其中,根据所述当前工作模式和环境光照量判断是否要进行工作模式切换,包括:
    在所述当前工作模式为黑白模式的情况下,当所述环境光照量高于一定阈值时,判断为需要切换为彩色模式,
    在所述当前工作模式为彩色模式的情况下,当所述环境光照量低于一定阈值时,判断为需要切换为黑白模式。
  5. 根据权利要求2所述的方法,还包括:
    根据监控对象与所述视频监控设备之间的距离来判断是否需要进行工作模式切换。
  6. 根据权利要求5所述的方法,其中,根据监控对象与所述视频监控设备之间的距离来判断是否需要进行工作模式切换,包括:
    通过运动检测或被动红外(Passive Infrared,PIR)检测监控对象与所述视频监控设备的距离,
    当检测到的所述距离在一定的范围内时,判断为需要切换为彩色模式。
  7. 根据权利要求1所述的方法,其中,所述设定要切换至的目标工作模式的目标曝光值,并结合所述当前工作模式的曝光参数计算所述目标工作模式的曝光参数,包括:
    根据如下公式计算所述目标工作模式的曝光参数:
    Figure PCTCN2016097409-appb-100001
    其中,T2为所述当前工作模式的曝光值,
    G2为所述当前工作模式的增益,
    S2为所述当前工作模式的快门,
    R2为所述当前工作模式的光圈,
    P2为所述当前工作模式的白光补光灯功率,
    K2为所述当前工作模式的滤光片透过率,
    T1为所述目标工作模式的目标曝光值,
    G1为所述目标工作模式的增益,
    S1为所述目标工作模式的快门,
    R1为所述目标工作模式的光圈,
    P1为所述目标工作模式的白光补光灯功率,
    K1为所述目标工作模式的滤光片透过率。
  8. 根据权利要求7所述的方法,还包括:
    将所述目标工作模式的快门S1设置为所述视频监控设备的帧率分之一,
    根据计算得到的所述目标工作模式的增益G1,调节所述视频监控设备的增益。
  9. 一种用于切换视频监控设备的工作模式的装置,所述装置包括处理器,通过读取机器可读存储介质所存储的与工作模式切换逻辑对应的机器可执行指令并执行所述机器可执行指令,所述处理器执行以下操作:
    读取所述视频监控设备的当前工作模式,记录所述当前工作模式的曝光参数;
    在要进行工作模式切换的情况下,设定要切换至的目标工作模式的目标曝光值,并结合所述当前工作模式的曝光参数计算所述目标工作模式的曝光参数。
  10. 根据权利要求9所述的装置,其中,所述工作模式包括黑白模式和彩色模式。
  11. 根据权利要求10所述的装置,其中,所述机器可执行指令还促使所述处理器执行以下操作:
    根据所述当前工作模式和环境光照量判断是否需要进行工作模式切换。
  12. 根据权利要求11所述的装置,其中,在根据所述当前工作模式和环境光照量判断是否需要进行工作模式切换时,所述机器可执行指令促使所述处理器执行以下操作:
    在所述当前工作模式为黑白模式的情况下,当所述环境光照量高于一定阈值时,判断为需要切换为彩色模式,
    在所述当前工作模式为彩色模式的情况下,当所述环境光照量低于一定阈值时,判断为需要切换为黑白模式。
  13. 根据权利要求10所述的装置,其中,所述机器可执行指令还促使所述处理器执行以下操作:
    根据监控对象与所述视频监控设备之间的距离来判断是否需要进行工作模式切换。
  14. 根据权利要求13所述的装置,其中,在根据监控对象与所述视频监控设备之间的距离来判断是否需要进行工作模式切换时,所述机器可执行指令促使所述处理器执行以下操作:
    通过运动检测或被动红外检测监控对象与所述视频监控设备的距离,
    当检测到的所述距离在一定的范围内时,判断为需要切换为彩色模式。
  15. 根据权利要求9所述的装置,其中,在设定要切换至的目标工作模式的目标曝光值,并结合所述当前工作模式的曝光参数计算所述目标工作模式的曝光参数时,所述机器可执行指令促使所述处理器执行以下操作:
    根据如下公式计算所述目标工作模式的曝光参数:
    Figure PCTCN2016097409-appb-100002
    其中,T2为所述当前工作模式的曝光值,
    G2为所述当前工作模式的增益,
    S2为所述当前工作模式的快门,
    R2为所述当前工作模式的光圈,
    P2为所述当前工作模式的白光补光灯功率,
    K2为所述当前工作模式的滤光片透过率,
    T1为所述目标工作模式的目标曝光值,
    G1为所述目标工作模式的增益,
    S1为所述目标工作模式的快门,
    R1为所述目标工作模式的光圈,
    P1为所述目标工作模式的白光补光灯功率,
    K1为所述目标工作模式的滤光片透过率。
  16. 根据权利要求15所述的装置,其中,所述机器可执行指令还促使所述处理器执行以下操作:
    将所述目标工作模式的快门S1设置为所述视频监控设备的帧率分之一,
    根据计算得到的所述目标工作模式的增益G1,调节所述视频监控设备的增益。
PCT/CN2016/097409 2015-12-03 2016-08-30 视频监控设备的工作模式的切换 WO2017092445A1 (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3806448A4 (en) * 2018-05-31 2021-07-28 Hangzhou Hikvision Digital Technology Co., Ltd. IMAGE CAPTURE PROCESS AND DEVICE, AND MACHINE READABLE STORAGE MEDIA

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105491285B (zh) * 2015-12-03 2019-02-15 浙江宇视科技有限公司 一种pir摄像机工作模式切换方法及装置
EP3649774A1 (en) 2017-07-03 2020-05-13 C/o Canon Kabushiki Kaisha Method and system for auto-setting cameras
JP2019129446A (ja) * 2018-01-25 2019-08-01 ソニーセミコンダクタソリューションズ株式会社 画像処理装置、および画像処理方法、並びにプログラム
CN111064899B (zh) * 2019-12-06 2021-06-08 成都华为技术有限公司 一种曝光参数的调节方法及装置
CN111770286B (zh) * 2020-08-04 2023-04-07 深圳市恩港科技开发有限公司 电子警察抓拍方法、电子设备和存储介质
CN114125293B (zh) * 2021-11-19 2024-02-23 浙江宇视科技有限公司 一种双光摄像机的图像质量控制方法、装置、介质及设备
CN116996762B (zh) * 2023-03-29 2024-04-16 荣耀终端有限公司 一种自动曝光方法、电子设备及计算机可读存储介质

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050162542A1 (en) * 2004-01-23 2005-07-28 Canon Kabushiki Kaisha Image-pickup device, color chart, image adjusting method, and image adjusting system
CN201127061Y (zh) * 2007-12-19 2008-10-01 深圳市同洲电子股份有限公司 摄像装置及低照度条件下的影像处理设备
CN101893804A (zh) * 2010-05-13 2010-11-24 杭州海康威视软件有限公司 曝光控制方法及装置
CN103702038A (zh) * 2013-12-31 2014-04-02 浙江宇视科技有限公司 一种基于动态阈值进行自动昼夜切换的方法和装置
CN105491285A (zh) * 2015-12-03 2016-04-13 浙江宇视科技有限公司 一种pir摄像机工作模式切换方法及装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7071971B2 (en) * 1997-08-25 2006-07-04 Elbex Video Ltd. Apparatus for identifying the scene location viewed via remotely operated television camera
JP3468231B2 (ja) 2001-07-02 2003-11-17 ミノルタ株式会社 画像処理装置、画質制御方法、プログラム及び記録媒体
JP2003134520A (ja) * 2001-10-19 2003-05-09 Minolta Co Ltd デジタルカメラ
US20030093805A1 (en) * 2001-11-15 2003-05-15 Gin J.M. Jack Dual camera surveillance and control system
WO2004047421A2 (en) * 2002-11-14 2004-06-03 Donnelly Corporation Imaging system for vehicle
KR100573697B1 (ko) * 2003-12-29 2006-04-26 삼성전자주식회사 광학기기의 광학필터 절환 장치
JP5148989B2 (ja) * 2007-12-27 2013-02-20 イーストマン コダック カンパニー 撮像装置
US8264437B2 (en) * 2008-08-29 2012-09-11 Sony Mobile Communications Ab Display for high brightness conditions
US8305447B1 (en) * 2009-08-27 2012-11-06 Wong Thomas K Security threat detection system
CN102724404B (zh) * 2012-06-08 2014-06-25 北京大恒图像视觉有限公司 一种全天候曝光增益自动调节方法和系统
CN103533252B (zh) * 2013-09-30 2017-02-22 浙江宇视科技有限公司 一种昼夜模式自动切换的方法和装置
US9813630B1 (en) * 2015-06-08 2017-11-07 Ambarella, Inc. Picture brightness adjusted motion detection

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050162542A1 (en) * 2004-01-23 2005-07-28 Canon Kabushiki Kaisha Image-pickup device, color chart, image adjusting method, and image adjusting system
CN201127061Y (zh) * 2007-12-19 2008-10-01 深圳市同洲电子股份有限公司 摄像装置及低照度条件下的影像处理设备
CN101893804A (zh) * 2010-05-13 2010-11-24 杭州海康威视软件有限公司 曝光控制方法及装置
CN103702038A (zh) * 2013-12-31 2014-04-02 浙江宇视科技有限公司 一种基于动态阈值进行自动昼夜切换的方法和装置
CN105491285A (zh) * 2015-12-03 2016-04-13 浙江宇视科技有限公司 一种pir摄像机工作模式切换方法及装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3806448A4 (en) * 2018-05-31 2021-07-28 Hangzhou Hikvision Digital Technology Co., Ltd. IMAGE CAPTURE PROCESS AND DEVICE, AND MACHINE READABLE STORAGE MEDIA
US11172140B2 (en) 2018-05-31 2021-11-09 Hangzhou Hikvision Digital Technology Co., Ltd. Image capture device includes white light lamp and infrared lamp for capturing better quality images when the brightness of the environment is moderate

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