WO2020057349A1 - Procédé et système de vision nocturne à éclairage ultra faible et appareil photographique à haute définition - Google Patents

Procédé et système de vision nocturne à éclairage ultra faible et appareil photographique à haute définition Download PDF

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Publication number
WO2020057349A1
WO2020057349A1 PCT/CN2019/103771 CN2019103771W WO2020057349A1 WO 2020057349 A1 WO2020057349 A1 WO 2020057349A1 CN 2019103771 W CN2019103771 W CN 2019103771W WO 2020057349 A1 WO2020057349 A1 WO 2020057349A1
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working mode
camera
white light
monitoring image
monitoring
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PCT/CN2019/103771
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English (en)
Chinese (zh)
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张平
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深圳市九洲电器有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/56—Cameras or camera modules comprising electronic image sensors; Control thereof provided with illuminating means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/667—Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/71—Circuitry for evaluating the brightness variation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means

Definitions

  • the invention relates to the field of intelligent security technology, and in particular, to an ultra-low-illumination night vision method and system, and a high-definition camera device.
  • Illumination intensity refers to the unit that refers to the luminous flux of visible light received per unit area.
  • the magnitude of the illumination intensity is usually characterized by the illuminance value.
  • the imaging of high-definition cameras will have a large difference. It is generally believed that the illumination value below 0.0001 Lux is called ultra-low illumination. Under ultra-low illumination, ordinary cameras cannot obtain the clarity in the monitoring range. Image data.
  • video surveillance is generally based on a single surveillance mode, and ordinary cameras cannot work in an ultra-low-light environment, which often leads to failure to obtain corresponding video data, resulting in blurred images in surveillance, affecting the quality of video surveillance, and easily Causes subsequent video forensics difficulties.
  • the present invention proposes an ultra-low-illumination night vision method, system and high-definition camera device, which solves the technical problem that the current video surveillance single surveillance mode is prone to blurring of the monitored image information, realizes intelligent adjustment of the operating mode, and improves the quality of video surveillance .
  • the embodiment of the present invention aims to provide an ultra-low-illumination night vision method, system and high-definition camera device, which solves the technical problem that the current single video monitoring mode is prone to blurring of the monitored image information, realizes intelligent adjustment of the working mode and improves The quality of video surveillance.
  • the embodiments of the present invention provide the following technical solutions:
  • an embodiment of the present invention provides an ultra-low-illumination night vision method, which is applied to a high-definition camera device.
  • the high-definition camera device includes an infrared laser camera and a white light camera.
  • the method includes:
  • the working mode includes a white light working mode or an infrared laser working mode
  • the working state of the infrared laser camera or the white light camera is switched.
  • the monitoring image information includes: brightness information of the monitoring image,
  • a working mode of the high-definition camera device the working mode including a white light working mode or an infrared laser working mode, including:
  • the working mode of the high-definition camera device is a white light working mode
  • the switching the working state of the infrared laser camera or the white light camera is specifically:
  • the monitoring image information further includes: an environmental brightness of the monitoring image,
  • the method further includes:
  • the surveillance image information includes: distance information of the surveillance image,
  • a working mode of the high-definition camera device the working mode including a white light working mode or an infrared laser working mode, including:
  • the working mode of the high-definition camera device is an infrared laser working mode
  • the switching the working state of the infrared laser camera or the white light camera is specifically:
  • the monitoring image information further includes: exposure degrees of different regions of the monitoring image,
  • the method further includes:
  • an ultra-low-illumination night vision system where the system includes:
  • An obtaining unit configured to obtain monitoring image information within a monitoring range of the high-definition camera device
  • a determining unit determining a working mode of the high-definition camera device, the working mode including a white light working mode or an infrared laser working mode;
  • the switching unit is configured to switch the working state of the infrared laser camera or the white light camera according to the white light working mode or the infrared laser working mode.
  • the monitoring image information includes: brightness information of the monitoring image, and the determining unit is specifically configured to:
  • the working mode of the high-definition camera is a white light working mode.
  • the monitoring image information includes: distance information of the monitoring image, and the determining unit is specifically configured to:
  • the working mode of the high-definition camera device is an infrared laser working mode.
  • an embodiment of the present invention provides a high-definition camera device, including:
  • At least one processor At least one processor
  • a memory connected in communication with the at least one processor; wherein,
  • the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor, so that the at least one processor can execute the above-mentioned ultra-low-illumination night vision method.
  • an embodiment of the present invention further provides a non-volatile computer-readable storage medium.
  • the computer-readable storage medium stores computer-executable instructions.
  • the high-definition imaging device is caused to execute the above-mentioned ultra-low-illumination night vision method.
  • a beneficial effect of the embodiment of the present invention is that, in a case different from the prior art, an ultra-low-illumination night vision method provided by an embodiment of the present invention is applied to a high-definition camera, which includes an infrared laser camera and white light.
  • a camera the method comprising: acquiring monitoring image information within a monitoring range of the high-definition camera device; and determining a working mode of the high-definition camera device according to the monitoring image information, the working mode including a white light working mode or an infrared laser working Mode; switching the working state of the infrared laser camera or white light camera according to the white light working mode or the infrared laser working mode.
  • FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of an ultra-low-illumination night vision method according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of an ultra-low-illumination night vision system according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a high-definition camera according to an embodiment of the present invention.
  • FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the present invention
  • the monitoring terminal 110 is connected to at least one high-definition camera device 130 through a communication network 120.
  • the high-definition camera device 130 is used to monitor a certain monitoring area 140, and multiple high-definition camera devices 130 can simultaneously perform monitoring on the monitoring area 140.
  • Video surveillance so as to achieve multi-angle and multi-directional monitoring, eliminate monitoring dead spots in the monitoring area.
  • the monitoring terminal 110 is used for presenting the monitoring content of the high-definition camera device 130, for example, a monitoring image or a monitoring video, and real-time display is performed through a display screen of the monitoring terminal 110. It can be understood that the monitoring terminal 110
  • the display screen of the display screen can be split-screen display, so as to display the monitoring information of the monitoring area at multiple angles, and the number of the split-screen is not less than the number of the high-definition camera devices 130 set in the monitoring area 140.
  • the communication network 120 may be a wireless network, such as WIFI, Bluetooth, etc., through the communication network 120, the communication connection between the monitoring terminal 110 and the plurality of high-definition camera devices 130 may be achieved, and may also
  • the communication network 120 implements data transmission between the monitoring terminal 110 and the plurality of high-definition camera devices 130, for example, sending monitoring content acquired by the plurality of high-definition camera devices 130 to the monitoring terminal 110, so that the monitoring terminal 110
  • the monitoring terminal 110 presents the monitoring content on a display screen of the monitoring terminal 110 and stores the monitoring content in a database of the monitoring terminal 110.
  • the high-definition camera 130 is configured to acquire monitoring information in a monitoring area.
  • the high-definition camera 130 includes an infrared laser camera, a white light camera, and an ultra-low-light camera.
  • the infrared laser camera is used to provide a high-brightness infrared laser, so that the camera of the high-definition camera 130 can monitor the video under low illumination.
  • the infrared laser camera mainly adopts a synchronous zoom infrared laser fill light technology.
  • the infrared laser has high brightness and long lighting distance
  • the distance for supplementing light using LED infrared lamps is not more than 150 meters, and even with infrared lasers of 2-3W, the effective lighting distance can be easily exceeded 400 meters.
  • the low-end ordinary LED infrared products have relatively obvious light attenuation due to the limitation of heat treatment and material cost.
  • the infrared laser chip is more stable and reliable.
  • the life of conventional products is generally more than 20,000 hours, and the light decay is less than 10% after 10,000 hours.
  • ordinary laser infrared lamps can be at a constant working temperature, and the long life of the product is greatly guaranteed.
  • the laser's photoelectric conversion efficiency is 3.3 times that of traditional LEDs, 2.7 times that of a single high-power LED, and 2.3 times that of synchronous LED zoom night vision technology. It should be noted that the power consumption of synchronous LED zoom and synchronous laser zoom includes the power consumption of its motor servo system. If this part is removed, this multiple will be greater.
  • the white light camera uses a camera night vision full-color white light technology, a so-called white light camera, which is a new type of camera that uses white light as a light source to supplement light. Similar to infrared cameras, they provide low-light photography at night. Its biggest feature is that white light cameras can also produce color images at night. Compared with infrared cameras, white light cameras have the following incomparable advantages:
  • Color image LED white light is a visible light with a color temperature above 5300K, which is close to natural light, and the light color rendering index can reach above 75, so the CCD can easily obtain a color picture with realistic colors.
  • LED white light is a visible light with a color temperature above 5300K, which is close to natural light, and the light color rendering index can reach above 75, so the CCD can easily obtain a color picture with realistic colors.
  • the high-power LED white light lamp has a unique secondary optical design.
  • the LED white light beam is adjusted to the viewing angle of the lens through a professional optical lens, and there is no light diffusion, which further improves the illumination. effectiveness.
  • Ultra-long life The service life of high-power LED white light lamp is as high as 50,000 hours or more. It will not cause premature light decay and affect the night light fill effect.
  • Lighting function It has the function of auxiliary lighting, for example, it can be used as a street light at night if it is installed on the outer wall or the gate. There is also a certain deterrent effect.
  • the white light camera has the function of auxiliary lighting and can play the role of street light at night. And its alerting function has a deterrent effect on people with unintended intentions and avoids possible crimes.
  • Low-temperature design The high-thermal-conductivity aluminum-based lamp board and housing are integrated in the assembly process, which can quickly dissipate the heat of the LED chip through the aluminum substrate and the housing to the air.
  • Constant current power supply The imported high-performance constant current power management chip is used to make the LED chip always work at a constant current, which solves the light attenuation of the LED chip caused by the increase of the current.
  • the ultra-low-light camera is configured to acquire an image under ultra-low light.
  • cameras with illuminance values greater than 0.1Lux are called ordinary cameras; cameras with illuminance values ranging from 0.1Lux to 0.01Lux are generally referred to as low-light cameras; and illuminance values ranging from 0.01Lux to 0.001Lux
  • the camera is called a moonlight camera; when the minimum illumination value reaches or falls below 0.0001 Lux, it reaches a starlight ultra-low-light camera.
  • the illuminance is lower than 0.0001 Lux, ordinary cameras cannot obtain clear images in the surveillance range, which easily leads to the failure to achieve normal video surveillance.
  • the device stability of ultra-low-light cameras is much higher than that of infrared fill-light cameras. Affected by the electromagnetic of the infrared fill light circuit and the heat of the infrared lamp, when the high temperature or long time work, the infrared fill light camera often appears a series of problems such as poor imaging quality and infrared switching failure. Because of this, most of the bayonet cameras need to separate the fill light accessories to ensure the overall stability of the system for a long time.
  • the low-light camera is in line with the green development theme of low-carbon environmental protection.
  • the rated design power of an ultra-low-light HD gun-type camera using a CMOS sensor is about 5W, while the rated design power of an infrared fill-light HD gun-type camera using a CMOS sensor usually reaches 9W.
  • the power saving effect of several cameras may not be obvious, but if you encounter large-scale video surveillance projects, especially in recent years, the number of monitoring points carried by the safe city project is increasing, some even reaching tens of thousands Each monitoring point, if calculated based on 1,000 monitoring points and a one-year operating time, will save about 35,000 kilowatt hours of energy consumption for the monitoring system.
  • the ultra-low-light camera is not much different from other camera products in use, so it became the darling in the market as soon as it went on the market. More and more projects and projects are deployed in important areas, especially in hospitals, banks, smart buildings, etc., which are important and sensitive areas that have a large impact on human visual perception and have been in low light for a long time.
  • Ultra-low-light camera is a hot product in the surveillance industry that has been introduced with the development of semiconductor technology in recent years. At present, it has been widely used in the fields of finance, cultural expo, hotels, office buildings, and residential community property management. As traditional cameras are difficult to meet the requirements of 24-hour continuous monitoring (because it is impossible to turn on the lights 24 hours at any place), new technology ultra-low-light cameras have seized this opportunity and developed rapidly.
  • the ultra-low-illumination series CCD camera uses the frame accumulation technology, the infrared camera provides surprisingly low brightness performance, and can compose images in almost complete darkness.
  • the concentration of photons on the CCD sensor is 2 to 128 times (1 to 2 seconds) longer than the maximum exposure time (1/60 or 1/50 second) of a conventional CCD infrared camera.
  • the minimum illumination of the camera to produce a usable image is reduced by 2 to 128 times.
  • users can see color images under star light conditions (0.0035 Lux), and black and white images under cloudy star light conditions (0.0002 Lux), and scattered backgrounds in cities Light (such as light pollution) is sufficient to produce good color exposure.
  • the ultra-low-light camera can also extend the effective range of using infrared.
  • frame cumulative exposure the range of influence of an infrared light source can be extended by 128 times. If a starlight camera is used, an infrared lamp designed to illuminate a target 10 meters away, its working range Can be extended to 1280 meters.
  • Maximum exposure (frame accumulation rate), AVS series models (PL926 / KL926) are fixed at 4 times, (PX926 / KX926) has a frame accumulation interval of 2 to 128 times, which is set by the user through the on-screen menu display menu.
  • PX926 / KX926 has a frame accumulation interval of 2 to 128 times, which is set by the user through the on-screen menu display menu.
  • the extended exposure time also requires a special cooling system to reduce the temperature of the CCD chip to -10C to reduce black current and hinder the image.
  • the method of obtaining images under low illumination is to increase the exposure of the CCD in a single frame image through a single frame accumulation of charge, thereby improving the sensitivity of the camera to a single frame image.
  • This method can also obtain a lower illuminance index, but it is necessary to reduce the degree of coherence of the image, so when choosing this camera, please pay attention not to use it with the gimbal as much as possible, otherwise it will cause the phenomenon of losing the picture.
  • There are some other ways to obtain images under low light but none of them can fundamentally solve the problem of light.
  • infrared cameras In order to increase the sensitivity of infrared cameras to infrared lights and scenes, lenses with a large amount of light should be used as much as possible, and when using an automatic aperture or a motorized variable lens, the driving level of the aperture should be set as wide as possible. Because generally with the increase of the focal length of the lens, its light flux will be relatively reduced. When choosing an infrared lamp, leave a certain margin, and pay attention to the nominal index of the infrared lamp. Second, the optional power supply of the infrared lamp should meet the minimum electric power required by it as much as possible, and the irradiation distance is often insufficient. Third, the degree of reflection of the scene to be photographed must be considered. Because infrared rays have the same characteristics as reflection and refraction of visible light, if there is no good reflective environment (such as buildings, fences, signs) around the target scene, certain considerations must be taken. Distance margin.
  • the monitoring area 140 may be a parking lot, a highway intersection, a traffic lane, a home, a doorway of a community, and the like.
  • the monitoring range of the high-definition camera 130 is the monitoring area 140. Since the camera of the high-definition camera 130 can be zoomed and there can be more than one high-definition camera 130, Therefore, the monitoring area 140 may be a visible range of at least one high-definition camera device 130, and the high-definition camera device 130 is configured to monitor an image change in the monitoring area 140.
  • FIG. 1 is a schematic flowchart of an ultra-low-illumination night vision method according to an embodiment of the present invention.
  • the method is applied to a high-definition camera, such as a high-definition camera, which is used for video surveillance.
  • the high-definition camera includes an infrared laser camera and a white light camera.
  • the method includes:
  • Step S10 acquiring monitoring image information within a monitoring range of the high-definition camera device
  • the high-definition camera device is arranged in a monitoring area.
  • the monitoring area may be a parking lot, a highway intersection, a carriageway, a home, a doorway of a community, and the like. It can be understood that
  • the high-definition camera device corresponds to a monitoring range, and the high-definition camera device can take pictures or videos of the conditions in the monitoring range, thereby obtaining monitoring image information or monitoring video in the monitoring range.
  • the high-definition camera includes an infrared laser camera and a white light camera.
  • an appropriate camera lens can be selected according to the customer's installation environment, monitoring location, and monitoring range.
  • the infrared laser camera and the white light camera are both adjustable focus cameras, and the focusing method may be automatic focusing or manual focusing.
  • the corresponding infrared laser camera and / or white light camera can be determined according to the position and size of the monitoring area.
  • the acquiring the monitoring image information in the monitoring range of the high-definition camera device includes: obtaining the brightness information of the monitoring image in the monitoring range of the high-definition camera device, or acquiring the monitoring information in the monitoring range of the high-definition camera device.
  • Environmental brightness of the image or acquiring distance information of a monitoring image within a monitoring range of the high-definition camera device, or acquiring flow density information of a monitoring image within the monitoring range of the high-definition camera device, or acquiring the high-definition camera device Movement speed information within a monitoring range, or obtaining exposure degrees of different regions of the monitoring image, or obtaining differences between exposure degrees of different regions of the monitoring image.
  • the high-definition camera device often cannot cover the entire location due to the size of the monitored location area, such as underground parking lots, highways, and homes. Therefore, the high-definition camera device only obtains monitoring image information within the monitoring range.
  • the monitoring range is related to the position of the high-definition camera device, and the monitoring range is a range that can be covered by the camera of the high-definition camera device.
  • One high-definition camera device can only monitor the monitoring image information in the monitoring range. Get it. It can be understood that the high-definition camera device may include a 360-degree wide-angle camera, and by rotating the camera, the high-definition camera device can realize wide-angle shooting of a monitoring area.
  • Step S20 Determine a working mode of the high-definition camera device according to the monitoring image information, where the working mode includes a white light working mode or an infrared laser working mode;
  • the high-definition camera device determines the working mode of the high-definition camera device according to the monitoring image information.
  • determining the working mode of the high-definition camera according to the monitoring image information includes: performing image recognition on the monitoring image, and obtaining monitoring image information of the monitoring image.
  • the monitoring image information includes: Brightness information, ambient brightness, distance information, crowd density information, movement speed information, exposure of different areas, and more.
  • the working mode of the high-definition camera is determined according to the brightness information, ambient brightness, distance information, flow density information, movement speed information, and exposure of different areas.
  • the working modes include a white light working mode or an infrared laser working mode.
  • the brightness information of the monitoring image is obtained according to the monitoring image, and if the brightness of the monitoring image is lower than a preset brightness threshold or fluctuates within a preset threshold range, the high-definition camera is determined.
  • the working mode of the device is a white light working mode.
  • acquiring the current frame of the monitoring image For example: acquiring the current frame of the monitoring image, converting the format of the current frame to the BAYER format, performing data compression on the BAYER format image, calculating an RGB color component of the BAYER format image, and The RGB color component determines the brightness of the current frame of the monitoring image, if the brightness of the current frame of the monitoring image is lower than a preset brightness threshold, or the brightness of the current frame of the monitoring image is within a preset threshold range If it fluctuates, it is determined that the working mode of the high-definition camera is a white light working mode; otherwise, it is determined that the working mode of the high-definition camera is an infrared laser working mode.
  • the environmental brightness of the monitoring image is obtained.
  • the environmental brightness refers to the current brightness of the monitoring environment.
  • the monitoring image may reflect the current brightness of the monitoring environment on the side.
  • the environment brightness of the monitored image is described, and the working mode of the high-definition camera device is determined. If the current ambient brightness is lower than a preset ambient brightness threshold, it is determined that the working mode of the high-definition camera device is a white light working mode; otherwise, it is determined that the working mode of the high-definition camera device is an infrared laser working mode.
  • the working mode of the high-definition camera device is determined according to the distance information of the monitoring image.
  • the distance information of the monitoring image refers to an object image size in the monitoring image.
  • the distance information of the monitoring image is characterized by a focal length of a camera of the high-definition camera. In a high-definition camera, the smaller the focal length, the wider the monitoring field of view, but the smaller the image of the object in the picture, the larger the focal length, the narrower the field of view, but the imaging of the object in the picture is clear.
  • the distance information of the monitoring image is determined, and the working mode of the high-definition camera is determined according to the distance information of the monitoring image. For example, if the distance information of the monitored image is less than a preset distance threshold, it is determined that the working mode of the high-definition camera device is a white light working mode; otherwise, it is determined that the working mode of the high-definition camera device is an infrared laser working mode.
  • the working mode of the device is switched to the infrared laser working mode.
  • the working mode of the high-definition camera device is determined by acquiring the flow density information of the monitoring image.
  • determining the flow density information specifically, by determining the number of persons in the monitoring image
  • calculating the flow density information of the surveillance image according to the size of the surveillance image and the number of persons in the surveillance image. For example, by determining the ratio of the size of the monitoring image and the number of people in the monitoring image, the ratio is determined as the flow density information of the monitoring image. It can be understood that, in the case of high crowd density, in order to better obtain the monitoring image, the monitoring image needs to be clearer.
  • the working mode of the high-definition camera device needs to be switched to a white light working mode to meet a strong sense of screen hierarchy. And the requirement of high resolution, therefore, through the preset crowd density threshold, when the crowd density is greater than the preset crowd density threshold, it is determined that the working mode of the high-definition camera device is a white light working mode; otherwise, the high-definition camera is determined.
  • the working mode of the device is an infrared laser working mode.
  • the working mode of the high-definition camera device further includes an infrared laser working mode and a white light working mode
  • the method further includes: obtaining movement speed information of the monitoring image, and specifically, obtaining continuous multi-frame monitoring images Compare the multi-frame surveillance images, and then obtain the differences in the multi-frame surveillance images, determine whether the high-definition camera device monitors a moving object, and determine the movement of the moving object based on the difference in the multi-frame surveillance images
  • the speed for example, is obtained by acquiring the time difference between two consecutive frames of images and combining the moving distance of the moving object in the two frames of images to calculate the moving speed information of the monitoring image.
  • the working mode of the high-definition camera device is determined to be an infrared laser working mode and a white light working mode, and the moving object is modified by the infrared laser and white light working simultaneously. Good monitoring better meets the needs of clarity and distance.
  • a working mode of the high-definition camera is determined by acquiring exposure degrees of different regions of the monitoring image. Wherein, by dividing the monitoring image into blocks, the monitoring image is divided into multiple blocks, and by detecting the brightness of the multiple blocks, the maximum brightness difference between the multiple blocks is calculated.
  • the maximum brightness difference refers to the brightness difference between the lowest brightness block and the highest brightness block. If the maximum brightness difference is greater than a preset brightness difference threshold, it is determined that the working mode of the high-definition camera is infrared. Laser working mode; otherwise, it is determined that the working mode of the high-definition camera is a white light working mode.
  • the working mode of the high-definition camera device is switched to the infrared laser working mode, and in the infrared laser working mode, intelligent infrared technology can also be used to prevent overexposure of a block image and certain Block image underexposure and other issues, so that the brightness of the image is evenly distributed, and the picture is more realistic and delicate.
  • Step S30 Switch the working state of the infrared laser camera or the white light camera according to the white light working mode or the infrared laser working mode.
  • the brightness information of the monitoring image is obtained according to the monitoring image, and if the brightness of the monitoring image is lower than a preset brightness threshold or fluctuates within a preset threshold range, the high-definition camera is determined. If the working mode of the device is a white light working mode, the white light camera is turned on; otherwise, if it is determined that the working mode of the high-definition camera device is an infrared laser working mode, the white light camera is turned off and the infrared laser camera is turned on.
  • the environmental brightness of the monitoring image is obtained.
  • the environmental brightness refers to the current brightness of the monitoring environment.
  • the monitoring image may reflect the current brightness of the monitoring environment on the side.
  • the environment brightness of the monitored image is described, and the working mode of the high-definition camera device is determined. If the current ambient brightness is lower than a preset ambient brightness threshold, determine the working mode of the high-definition camera device as a white light working mode, and turn on the white light camera; otherwise, determine that the working mode of the high-definition camera device is infrared In laser mode, the white light camera is turned off and the infrared laser camera is turned on.
  • the method further comprises: adjusting the light emitting power of the white light camera according to the ambient brightness of the monitored image. Specifically, if the ambient brightness of the monitored image is lower than a preset minimum ambient brightness threshold, the light emitting power of the white light camera is increased, so that the white light camera uses white light as a light source to supplement light, so as to better implement monitoring .
  • the working mode of the high-definition camera device is determined according to the distance information of the monitoring image.
  • the distance information of the monitoring image refers to an object image size in the monitoring image.
  • the distance information of the monitoring image is characterized by a focal length of a camera of the high-definition camera. In a high-definition camera, the smaller the focal length, the wider the monitoring field of view, but the smaller the image of the object in the picture, the larger the focal length, the narrower the field of view, but the imaging of the object in the picture is clear.
  • the distance information of the monitoring image is determined, and the working mode of the high-definition camera is determined according to the distance information of the monitoring image. For example: if the distance information of the monitored image is less than a preset distance threshold, determine that the working mode of the high-definition camera device is a white light working mode and turn on the white light camera; otherwise, determine that the working mode of the high-definition camera device is infrared In laser mode, the white light camera is turned off and the infrared laser camera is turned on.
  • the working mode of the high-definition camera device is determined by acquiring the flow density information of the monitoring image.
  • determining the flow density information specifically, by determining the number of persons in the monitoring image
  • calculating the flow density information of the surveillance image according to the size of the surveillance image and the number of persons in the surveillance image. For example, by determining the ratio of the size of the monitoring image and the number of people in the monitoring image, the ratio is determined as the flow density information of the monitoring image. It can be understood that, in the case of high crowd density, in order to better obtain the monitoring image, the monitoring image needs to be clearer.
  • the working mode of the high-definition camera device needs to be switched to a white light working mode to meet a strong sense of screen hierarchy And the requirement of high resolution, so through the preset crowd density threshold, when the crowd density is greater than the preset crowd density threshold, determine that the working mode of the high-definition camera device is a white light working mode, and turn on the white light camera, otherwise To determine that the working mode of the high-definition camera is an infrared laser working mode, turn off the white light camera, and turn on the infrared laser camera.
  • the working mode of the high-definition camera device further includes an infrared laser working mode and a white light working mode
  • the method further includes: obtaining movement speed information of the monitoring image, and specifically, obtaining continuous multi-frame monitoring images Compare the multi-frame surveillance images, and then obtain the differences in the multi-frame surveillance images, determine whether the high-definition camera device monitors a moving object, and determine the movement of the moving object based on the difference in the multi-frame surveillance images
  • the speed for example, is obtained by acquiring the time difference between two consecutive frames of images and combining the moving distance of the moving object in the two frames of images to calculate the moving speed information of the monitoring image.
  • the working mode of the high-definition camera device is determined as an infrared laser working mode and a white light working mode, and the infrared laser camera and the white light camera are turned on at the same time.
  • a working mode of the high-definition camera is determined by acquiring exposure degrees of different regions of the monitoring image. Wherein, by dividing the monitoring image into blocks, the monitoring image is divided into multiple blocks, and by detecting the brightness of the multiple blocks, the maximum brightness difference between the multiple blocks is calculated.
  • the maximum brightness difference refers to the brightness difference between the lowest brightness block and the highest brightness block. If the maximum brightness difference is greater than a preset brightness difference threshold, it is determined that the working mode of the high-definition camera is infrared.
  • the infrared laser camera In the laser working mode, the infrared laser camera is turned on; otherwise, it is determined that the working mode of the high-definition camera device is a white light working mode, the infrared laser camera is turned off, and the white light camera is turned on.
  • several monitoring images may be divided into nine blocks of equal area size. By detecting the brightness of the nine blocks, the brightness difference between the nine blocks is calculated to determine the high-definition camera device.
  • the working mode is infrared laser working mode or white light working mode.
  • the method further comprises: adjusting the light emitting power of the infrared laser camera according to the exposure degree of different regions of the monitoring image. Specifically, the average brightness of the plurality of blocks is calculated.
  • the light emitting power of the infrared laser camera is increased to make the infrared laser light
  • the camera performs infrared laser supplementary light to better acquire the surveillance image or surveillance video.
  • the monitoring image information within the monitoring range of the high-definition camera device is obtained; according to the monitoring image information, a working mode of the high-definition camera device is determined, and the working mode includes a white light working mode or an infrared laser.
  • Working mode switching the working state of the infrared laser camera or white light camera according to the white light working mode or the infrared laser working mode.
  • the high-definition camera device further includes an ultra-low-light camera
  • the working mode further includes an ultra-low-light working mode.
  • the method further includes: The monitoring image information within the monitoring range of the high-definition camera device; and determining the working mode of the high-definition camera device according to the monitoring image information, the working mode includes a white light working mode and / or an infrared laser working mode or an ultra-low-illumination working mode ; Switching the working state of the infrared laser camera or white light camera or ultra-low light camera according to the white light working mode and / or infrared laser working mode or ultra-low light working mode.
  • the illuminance information of the monitoring image is obtained according to the monitoring image, if the illuminance of the monitoring image is lower than a first illuminance threshold, and if the illuminance of the monitoring image is at the first Between the illuminance threshold and the second illuminance threshold, it is determined that the working mode of the high-definition camera is a white light mode, and if the illuminance of the monitored image is greater than the second illuminance threshold, the working mode of the high-definition camera is determined. Infrared laser working mode. Specifically, the first brightness threshold is set to 0.0001 Lux, and the second brightness threshold is set to 0.01 Lux.
  • the monitoring image information within the monitoring range of the high-definition camera device is obtained; according to the monitoring image information, a working mode of the high-definition camera device is determined, and the working mode includes a white light working mode and / or Infrared laser working mode or ultra-low-illumination working mode; according to the white light working mode and / or infrared laser working mode or ultra-low-illumination working mode, switch the working state of the infrared laser camera or white-light camera or ultra-low-light camera.
  • the embodiments of the present invention can solve the technical problem that the current single video monitoring mode is prone to blurring of the monitored image information, realize intelligent adjustment of the working mode, and improve the quality of video monitoring.
  • FIG. 3 is a schematic structural diagram of an ultra-low-illumination night vision system according to an embodiment of the present invention.
  • the ultra-low-illumination night vision system can be applied to a high-definition camera device.
  • the night vision system 100 includes:
  • An obtaining unit 10 configured to obtain monitoring image information within a monitoring range of the high-definition camera device
  • the determining unit 20 determines a working mode of the high-definition camera according to the monitoring image information, where the working mode includes a white light working mode or an infrared laser working mode;
  • the switching unit 30 is configured to switch the working state of the infrared laser camera or the white light camera according to the white light working mode or the infrared laser working mode.
  • the monitoring image information includes: brightness information of the monitoring image, and the determining unit 20 is specifically configured to:
  • the working mode of the high-definition camera is a white light working mode.
  • the monitoring image information includes: distance information of the monitoring image, and the determining unit 20 is specifically configured to:
  • the working mode of the high-definition camera device is an infrared laser working mode.
  • FIG. 4 is a schematic structural diagram of a high-definition camera device according to an embodiment of the present invention.
  • the high-definition camera 50 includes one or more processors 51, a memory 52, an infrared laser camera 53, a white light camera 54, and an ultra-low-light camera 55.
  • one processor 51 is taken as an example in FIG. 4.
  • the processor 51 and the memory 52 may be connected through a bus or in other manners.
  • the connection through the bus is taken as an example.
  • the memory 52 is a non-volatile computer-readable storage medium, and may be used to store non-volatile software programs, non-volatile computer executable programs, and modules, such as an ultra-low-illumination night vision in the embodiment of the present invention.
  • the unit corresponding to the method (for example, each unit described in FIG. 3).
  • the processor 51 executes various functional applications and data processing of the ultra-low-illumination night vision method by running the non-volatile software programs, instructions, and modules stored in the memory 52, that is, the ultra-low-illumination night vision of the foregoing method embodiment is implemented. Method and functions of each module and unit of the above system embodiment.
  • the memory 52 may include a high-speed random access memory, and may further include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage device.
  • the memory 52 may optionally include a memory remotely disposed with respect to the processor 51, and these remote memories may be connected to the processor 51 through a network. Examples of the above network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.
  • the module is stored in the memory 52, and when executed by the one or more processors 51, executes the ultra-low-illumination night vision method in any of the above method embodiments, for example, as shown in FIG. 2 described above Each step; also can implement the functions of each module or unit described in Figure 3.
  • the infrared laser camera 53 is configured to provide a high-brightness infrared laser, thereby facilitating the camera of the high-definition camera 130 to monitor video under low illumination.
  • the infrared laser camera mainly adopts a synchronous zoom infrared laser fill light technology.
  • the white light camera 54 uses a camera night vision full-color white light technology.
  • the so-called white light camera is a new type of camera that uses white light as a light source to supplement light. Similar to infrared cameras, they provide low-light photography at night. Its biggest feature is that white light cameras can also produce color images at night.
  • the ultra-low-illuminance camera 55 is configured to acquire an image in an ultra-low-illuminance.
  • cameras with illuminance values greater than 0.1Lux are called ordinary cameras; cameras with illuminance values ranging from 0.1Lux to 0.01Lux are generally referred to as low-light cameras; and illuminance values ranging from 0.01Lux to 0.001Lux
  • the camera is called a moonlight camera; when the minimum illumination value reaches or falls below 0.0001 Lux, it reaches a starlight ultra-low-light camera.
  • the illuminance is lower than 0.0001 Lux, ordinary cameras cannot obtain clear images in the surveillance range, which easily leads to the failure to achieve normal video surveillance.
  • the low-light camera is in line with the green development theme of low-carbon environmental protection.
  • the rated design power of an ultra-low-light HD gun-type camera using a CMOS sensor is about 5W, while the rated design power of an infrared fill-light HD gun-type camera using a CMOS sensor usually reaches 9W.
  • the power saving effect of several cameras may not be obvious, but if you encounter large-scale video surveillance projects, especially in recent years, the number of monitoring points carried by the safe city project is increasing, some even reaching tens of thousands Each monitoring point, if calculated based on 1,000 monitoring points and a one-year operating time, will save about 35,000 kilowatt hours of energy consumption for the monitoring system.
  • the ultra-low-light camera is not much different from other camera products in use, so it became the darling in the market as soon as it went on the market. More and more projects and projects are deployed in important areas, especially in hospitals, banks, smart buildings, etc., which are important and sensitive areas that have a large impact on human visual perception and have been in low light for a long time.
  • Ultra-low-light camera is a hot product in the surveillance industry that has been introduced with the development of semiconductor technology in recent years. At present, it has been widely used in the fields of finance, cultural expo, hotels, office buildings, and residential community property management. As traditional cameras are difficult to meet the requirements of 24-hour continuous monitoring (because it is impossible to turn on the lights 24 hours at any place), new technology ultra-low-light cameras have seized this opportunity and developed rapidly.
  • the ultra-low-illumination series CCD cameras use the frame accumulation technology.
  • the infrared camera provides surprisingly low brightness performance and can compose images in almost complete darkness.
  • the concentration of photons on the CCD sensor is 2 to 128 times (1 to 2 seconds) longer than the maximum exposure time (1/60 or 1/50 second) of a conventional CCD infrared camera.
  • the minimum illumination of the camera to produce a usable image is reduced by 2 to 128 times.
  • users can see color images under star light conditions (0.0035 Lux), and black and white images under cloudy star light conditions (0.0002 Lux), and scattered backgrounds in cities Light (such as light pollution) is sufficient to produce good color exposure.
  • the ultra-low-light camera can also extend the effective range of using infrared.
  • frame cumulative exposure the range of influence of an infrared light source can be extended by 128 times. If a starlight camera is used, an infrared lamp designed to illuminate a target 10 meters away, its working range Can be extended to 1280 meters.
  • Maximum exposure (frame accumulation rate), AVS series models (PL926 / KL926) are fixed at 4 times, (PX926 / KX926) has a frame accumulation interval of 2 to 128 times, which is set by the user through the on-screen menu display menu.
  • PX926 / KX926 has a frame accumulation interval of 2 to 128 times, which is set by the user through the on-screen menu display menu.
  • the extended exposure time also requires a special cooling system to reduce the temperature of the CCD chip to -10C to reduce black current and hinder the image.
  • the method of obtaining images under low illumination is to increase the exposure of the CCD in a single frame image through a single frame accumulation of charge, thereby improving the sensitivity of the camera to a single frame image.
  • This method can also obtain a lower illuminance index, but it is necessary to reduce the degree of coherence of the image, so when choosing this camera, please pay attention not to use it with the gimbal as much as possible, otherwise it will cause the phenomenon of losing the picture.
  • There are some other ways to obtain images under low light but none of them can fundamentally solve the problem of light.
  • infrared cameras In order to increase the sensitivity of infrared cameras to infrared lights and scenes, lenses with a large amount of light should be used as much as possible, and when using an automatic aperture or a motorized variable lens, the driving level of the aperture should be set as wide as possible. Because generally with the increase of the focal length of the lens, its light flux will be relatively reduced. When choosing an infrared lamp, leave a certain margin, and pay attention to the nominal index of the infrared lamp. Second, the optional power supply of the infrared lamp should meet the minimum electric power required by it as much as possible, and the irradiation distance is often insufficient. Third, the degree of reflection of the scene to be photographed must be considered. Because infrared rays have the same characteristics as reflection and refraction of visible light, if there is no good reflective environment (such as buildings, fences, signs) around the target scene, certain considerations must be taken. Distance margin.
  • An embodiment of the present invention also provides a non-volatile computer storage medium.
  • the computer storage medium stores computer-executable instructions, and the computer-executable instructions are executed by one or more processors, such as a process in FIG. 4.
  • the processor 51 may enable the one or more processors to execute the ultra-low-illumination night vision method in any of the foregoing method embodiments, for example, execute the ultra-low-illumination night vision method in any of the foregoing method embodiments, for example, execute the foregoing description
  • the steps shown in Figure 2; the functions of the units described in Figure 3 can also be implemented.
  • the high-definition camera device includes a processor, a memory, an infrared laser camera, a white light camera, and an ultra-low-light camera.
  • the working status of the ultra-low-light camera realizes intelligent adjustment of the working mode and improves the quality of video surveillance.
  • the embodiments of the device or device described above are only schematic, and the unit modules described as separate components may or may not be physically separated, and the components displayed as module units may or may not be physical units. , Can be located in one place, or can be distributed to multiple network module units. Some or all of the modules may be selected according to actual needs to achieve the objective of the solution of this embodiment.

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Abstract

Selon certains modes de réalisation, la présente invention se rapporte au domaine technique de la protection et la sécurité intelligentes et concerne un procédé et un système de vision nocturne à éclairage ultra faible et un appareil photographique à haute définition, le procédé de vision nocturne à éclairage ultra faible étant appliqué à un appareil photographique à haute définition et l'appareil photographique à haute définition comprenant une caméra laser infrarouge et une caméra à lumière blanche. Le procédé comprend les étapes suivantes : acquérir des informations d'images de surveillance dans une plage de surveillance de l'appareil photographique à haute définition ; selon les informations des images de surveillance, déterminer un mode de fonctionnement de l'appareil photographique à haute définition, le mode de fonctionnement comprenant un mode de fonctionnement à lumière blanche ou un mode de fonctionnement à laser infrarouge ; et selon le mode de fonctionnement à lumière blanche ou le mode de fonctionnement à laser infrarouge, commuter un mode de fonctionnement de la caméra laser infrarouge ou de la caméra à lumière blanche. Grâce au procédé mentionné ci-dessus, les modes de réalisation de la présente invention permettent de résoudre le problème technique d'informations d'images de surveillance confuses apparaissant facilement dans un seul mode de surveillance d'une surveillance vidéo actuelle, de mettre en œuvre intelligemment le réglage d'un mode de fonctionnement et d'améliorer la qualité de la surveillance vidéo.
PCT/CN2019/103771 2018-09-21 2019-08-30 Procédé et système de vision nocturne à éclairage ultra faible et appareil photographique à haute définition WO2020057349A1 (fr)

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Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109151390B (zh) * 2018-09-21 2021-07-09 深圳市九洲电器有限公司 一种超低照度夜视方法、系统及高清摄像装置
CN109688332B (zh) * 2019-02-14 2021-06-29 普联技术有限公司 摄像模式调整方法、装置及终端设备
CN111726514B (zh) 2019-03-20 2021-09-28 浙江宇视科技有限公司 一种摄像机及其昼夜模式切换方法、装置、设备、介质
CN111968068A (zh) * 2020-08-18 2020-11-20 杭州海康微影传感科技有限公司 一种热成像图像的处理方法及装置
CN112165573B (zh) * 2020-09-14 2023-04-18 上海商汤智能科技有限公司 拍摄处理方法和装置、设备、存储介质
CN112887664A (zh) * 2020-12-25 2021-06-01 安徽翼讯飞行安全技术有限公司 一种基于商务软件平台的可视化监控系统
CN112650379A (zh) * 2020-12-29 2021-04-13 深圳市商汤科技有限公司 激活方法及装置、电子设备及计算机可读存储介质
CN113079350A (zh) * 2021-03-22 2021-07-06 昆仑数智科技有限责任公司 一种摄像装置以及生产监控系统
CN114429761B (zh) * 2022-04-01 2022-06-03 南京有物信息科技有限公司 适用于多终端的显示控制方法、装置及系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103716527A (zh) * 2012-09-29 2014-04-09 浙江大华技术股份有限公司 一种确定摄像设备的工作模式的方法及设备
CN104786934A (zh) * 2015-03-18 2015-07-22 绵阳奥利斯机电科技有限公司 一种车辆行驶数据管理系统及实现方法
WO2018019206A1 (fr) * 2016-07-29 2018-02-01 Zhejiang Dahua Technology Co., Ltd. Systèmes et procédés permettant de changer les modes de fonctionnement du filtre optique d'un dispositif d'imagerie
CN109151390A (zh) * 2018-09-21 2019-01-04 深圳市九洲电器有限公司 一种超低照度夜视方法、系统及高清摄像装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201571139U (zh) * 2010-01-15 2010-09-01 常州宏本数码科技有限公司 安全型激光红外高速云台摄像机
CN104301623B (zh) * 2014-10-28 2017-10-31 浙江宇视科技有限公司 一种混合补光方法和装置
CN107948539B (zh) * 2015-04-30 2020-07-17 Oppo广东移动通信有限公司 一种闪光灯控制方法及终端
CN106170072B (zh) * 2016-07-18 2022-06-10 中国科学院地理科学与资源研究所 视频采集系统及其采集方法
CN107635099B (zh) * 2017-10-09 2020-08-18 深圳市天视通电子科技有限公司 一种人体感应双光网络摄像机及安防监控系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103716527A (zh) * 2012-09-29 2014-04-09 浙江大华技术股份有限公司 一种确定摄像设备的工作模式的方法及设备
CN104786934A (zh) * 2015-03-18 2015-07-22 绵阳奥利斯机电科技有限公司 一种车辆行驶数据管理系统及实现方法
WO2018019206A1 (fr) * 2016-07-29 2018-02-01 Zhejiang Dahua Technology Co., Ltd. Systèmes et procédés permettant de changer les modes de fonctionnement du filtre optique d'un dispositif d'imagerie
CN109151390A (zh) * 2018-09-21 2019-01-04 深圳市九洲电器有限公司 一种超低照度夜视方法、系统及高清摄像装置

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