WO2015149711A1

WO2015149711A1 - Infrared control device and method, and camera

Info

Publication number: WO2015149711A1
Application number: PCT/CN2015/075790
Authority: WO
Inventors: 李健璋; 许锡雷; 王斌
Original assignee: 华为技术有限公司
Priority date: 2014-04-03
Filing date: 2015-04-02
Publication date: 2015-10-08
Also published as: CN104980639A

Abstract

Provided are an infrared control device and method, and a camera. The infrared control device of the present invention comprises: a light intensity counting module, a sliding filtering module, a window comparison module, an energy analysis module and a control module, wherein the light intensity counting module counts an average sensed light intensity according to imaging data; the sliding filtering module filters the average sensed light intensity; the window comparison module compares the average sensed light intensity to an open threshold value, and if the average sensed light intensity is greater than the open threshold, a first control signal is output; the energy analysis module conducts an energy analysis according to the imaging data so as to judge the state of an infrared lamp, if the infrared lamp is turned on, a second control signal is sent, and if the infrared lamp is turned off, a third control signal is sent; and the control module controls the infrared filter to be turned off according to the first control signal and the second control signal, and controls the infrared filter to be turned on according to the first control signal and the third control signal. The embodiments of the present invention can improve the imaging stability of a camera.

Description

Infrared control device, method and camera

The present application claims priority to Chinese Patent Application No. 201410131994.0, entitled "Infrared Control Device, Method and Camera", filed on April 3, 2014, the entire contents of which is incorporated herein by reference. .

Technical field

Embodiments of the present invention relate to information processing technologies, and in particular, to an infrared control device, method, and video camera.

Background technique

The visible light that can be seen by the human eye is arranged in wavelength from long to short, followed by red, orange, yellow, green, cyan, blue, and purple. The wavelength of red light is in the range of 0.62 to 0.76 μm; the light longer than the wavelength of red light is called infrared light, and the human eye cannot see infrared rays. Since the camera's photosensitive unit captures all incident light, it includes visible light, infrared light, and so on. In order to avoid the influence of infrared rays on the color of the image after imaging, an infrared filter is added between the lens of the camera and the photosensitive unit to filter out the infrared rays, so that the photosensitive unit only senses visible light.

However, in order to improve the night vision capability of the camera, the camera can be equipped with an infrared light to emit infrared light that is invisible to the naked eye to illuminate the object being photographed. In this case, turn off the IR filter to capture images that are invisible or blurred by the naked eye in a dark environment. However, when the infrared filter is turned off, the external light gradually rises due to the opening of the infrared light, and the infrared filter is turned on again. Since the current external illumination is due to the illumination of the infrared lamp, when the infrared filter is turned on, the external illumination will suddenly be low, and the infrared filter is turned off. Therefore, a camera equipped with an infrared lamp is prone to repeated switching of the infrared filter in a dark environment.

However, repeated switching of the infrared filter tends to cause instability of the image imaged by the camera.

Summary of the invention

Embodiments of the present invention provide an infrared control device, method, and camera to solve the problem of image instability caused by a camera in the prior art.

In a first aspect, an embodiment of the present invention provides an infrared control device, including: a light intensity statistics module, a sliding filter module, a window comparison module, an energy analysis module, and a control module; the light intensity statistics module, the sliding filter module, The window comparison module and the control module are sequentially connected;

The light intensity statistic module is further connected to the imaging sensor, and configured to calculate an average photosensitive intensity of the imaging sensor according to the imaging data output by the imaging sensor, and send the average photosensitive intensity to the sliding filter module;

The sliding filter module is configured to perform sliding filtering on the average photosensitive intensity and send the result to the window comparison module;

The window comparison module is configured to compare the average photosensitive intensity with an opening threshold; if the average photosensitive intensity is greater than the opening threshold, outputting a first control signal to the control module;

The energy analysis module is connected to the imaging sensor and the control module, and is configured to perform red, green and blue RGB energy analysis according to the imaging data to determine a state of the infrared light; if the state of the infrared light is on Sending a second control signal to the control module, and if the state of the infrared light is off, sending a third control signal to the control module;

The control module is further connected to the infrared filter, configured to control, according to the first control signal and the second control signal, a state of the infrared filter to be off, according to the first control signal and The third control signal controls the state of the infrared filter to be on.

According to a first aspect, in a first possible implementation manner of the first aspect, the energy analysis module includes: a channel selection unit, a ratio calculation unit, and a determination unit; the imaging sensor includes: at least one group of photosensitive elements; each group The photosensitive elements each include: an R photosensitive element, a Gr photosensitive element, a Gb photosensitive element, and a B photosensitive element;

The channel selection unit is connected to the imaging sensor and the ratio calculation unit, and configured to respectively determine light intensity of each component in the photosensitive element according to the imaging data, and send the light intensity to the ratio Rate calculation unit;

The ratio calculating unit is further connected to the determining unit, and configured to respectively calculate a ratio of light intensity corresponding to the light intensity of the R photosensitive element and the Gr photosensitive element in each of the photosensitive elements according to light intensity of each element in the photosensitive element a ratio of the light intensity of the B photosensitive element and the Gb photosensitive element, and sent to the determining unit;

Calculating, according to the light intensity of each element in the photosensitive element, an average light intensity corresponding to each of the R photosensitive element, the Gr photosensitive element, the Gb photosensitive element, and the B photosensitive element in the imaging sensor, and transmitting to the determining unit;

The determining unit is further connected to the control module, and configured to, according to the ratio of the light intensity of the R photosensitive element to the Gr photosensitive element in each of the photosensitive elements, the ratio of the light intensity of the B photosensitive element and the Gb photosensitive element, And an energy analysis of the average light intensity corresponding to each of the R photosensitive element, the Gr photosensitive element, the Gb photosensitive element, and the B photosensitive element in the imaging sensor, and determining the state of the infrared light.

According to a first possible implementation manner of the first aspect, in a second possible implementation manner, the determining unit is further configured to: if the R photosensitive element and the Gr photosensitive element correspond to light intensity in each set of photosensitive elements The ratio, the ratio of the light intensity of the B photosensitive element and the Gb photosensitive element in each of the photosensitive elements to the difference of 1 is 0, and the R photosensitive element, the Gr photosensitive element, the Gb photosensitive element and the B photosensitive in the imaging sensor The difference between the average light intensities of the components is 0, and the state of the infrared lamp is determined to be on.

According to the first or second possible implementation manner of the first aspect, in a third possible implementation manner, the energy analysis module further includes: a white point selection unit;

The white point selection unit is connected to the imaging sensor and the channel selection unit for performing white point data selection in the imaging data, and transmitting the selected white point data to the channel selection unit;

The channel selection unit is further configured to respectively determine light intensities of the components in the photosensitive element according to the white point data.

According to a third possible implementation manner of the first aspect, in a fourth possible implementation manner, the energy analysis module further includes: an amplitude filtering unit;

The amplitude filtering unit is located between the white point selecting unit and the channel selecting unit, before the channel selecting unit respectively determines the light intensity of each component in the photosensitive element according to the white point data And performing amplitude filtering on the white point data.

According to a fourth possible implementation manner of the first aspect, in a fifth possible implementation manner, the energy analysis module further includes: a region weight unit;

The area weighting unit is connected to the ratio calculating unit, and configured to calculate, in the ratio calculating unit, the R photosensitive element and the Gr sensing element in each of the photosensitive elements according to the light intensity of each component in the photosensitive element. a ratio of the light intensity corresponding to the component, the ratio of the light intensity of the B photosensitive element and the Gb photosensitive element in each of the photosensitive elements, the components of the photosensitive element respectively determined according to the white point data in different regions The weight corresponding to the light intensity configuration.

In a second aspect, an embodiment of the present invention provides an infrared control device, including: a light intensity statistics module, a sliding filter module, a light intensity analysis module, a window comparison module, and a control module; the light intensity statistics module and the sliding filter module. The window comparison module and the control module are sequentially connected;

The light intensity statistics module is connected to the imaging sensor, and configured to calculate an average photosensitive intensity of the imaging sensor according to the imaging data output by the imaging sensor, and send the average photosensitive intensity to the sliding filter module;

The sliding filter module is configured to perform sliding filtering on the average photosensitive intensity, and send the image to the window comparison module and the light intensity analysis module;

The light intensity analysis module is connected to the imaging sensor and the window comparison module, and is configured to perform a light intensity analysis according to the average light intensity, determine a state of the infrared light, and if the determination result is on, output Feedback information to the window comparison module;

The window comparison module is configured to output a control signal to the control module according to the average photosensitive intensity and the feedback information;

The control module is further connected to the infrared filter for controlling the state of the infrared filter according to the control signal.

According to the second aspect, in a first possible implementation manner of the second aspect, the light intensity analysis module includes: a sampling processing unit and a determining unit;

The sampling processing unit is connected to the sliding filter module and the determining unit, and is configured to sample the average photosensitive intensity within a preset time to obtain a change amplitude of the average photosensitive intensity;

The determining unit is connected to the window comparison module, and is configured to compare the change amplitude with a preset amplitude, and determine a state of the infrared light according to the comparison result; if the infrared light is on Transmitting the change amplitude as the feedback information to the window comparison module;

Correspondingly, the window comparison module is further configured to use the difference between the average photosensitive intensity and the change amplitude as input data, and compare the state of the infrared filter with an open threshold and a closed threshold. control.

According to a first possible implementation manner of the second aspect, in a second possible implementation manner, the determining unit is further configured to determine the infrared if the change amplitude is less than the preset amplitude The light is turned off; if the change amplitude is greater than or equal to the preset amplitude, it is determined that the infrared light is on.

In a third aspect, the present invention provides an infrared control method, including:

The light intensity statistic module of the infrared control device counts the average photosensitive intensity of the imaging sensor according to the imaging data output by the imaging sensor, and sends it to the sliding filter module of the infrared control device;

The sliding filter module performs sliding filtering on the average photosensitive intensity, and the sliding filtering is sent to a window comparison module of the infrared control device;

The window comparison module compares the average photosensitive intensity with an opening threshold; if the average photosensitive intensity is greater than the opening threshold, outputting a first control signal to a control module of the infrared control device;

The energy analysis module of the infrared control device performs red, green and blue RGB according to the imaging data. Energy analysis to determine the state of the infrared light;

If the state of the infrared light is on, the energy analysis module sends a second control signal to the control module; or, if the state of the infrared light is off, the energy analysis module sends a message to the control module Three control signals;

The control module controls the state of the infrared filter to be off according to the first control information and the second control signal; and controls the infrared filter according to the first control signal and the third control signal The status is on.

According to a third aspect, in a first possible implementation manner of the third aspect, the energy analysis module includes: a channel selection unit, a ratio calculation unit, and a determination unit; the imaging sensor includes: a photosensitive element; each group of photosensitive elements All include: R photosensitive element, Gr photosensitive element, Gb photosensitive element and B photosensitive element;

The energy analysis module of the infrared control device performs red, green, and blue RGB energy analysis according to the imaging data, and determines the state of the infrared light, including:

The channel selection unit respectively determines light intensities of the elements in the photosensitive element according to the imaging data;

The ratio calculating unit respectively calculates a ratio of light intensity corresponding to the light intensity of the R photosensitive element and the Gr photosensitive element in each of the photosensitive elements according to the light intensity of each of the photosensitive elements, and the light intensity of the B photosensitive element and the Gb photosensitive element a ratio; according to the light intensity of each element in the photosensitive element, respectively calculating an average light intensity corresponding to each of the R photosensitive element, the Gr photosensitive element, the Gb photosensitive element, and the B photosensitive element in the imaging sensor;

The determining unit is configured according to a ratio of a light intensity corresponding to the R photosensitive element and the Gr photosensitive element in each of the photosensitive elements, a ratio of the light intensity of the B photosensitive element and the Gb photosensitive element, and an R photosensitive element and a Gr photosensitive in the imaging sensor. Energy analysis is performed on the average light intensity corresponding to each of the element, the Gb photosensitive element, and the B photosensitive element, and the state of the infrared lamp is determined.

According to a first possible implementation of the third aspect, in a second possible implementation, the The determining unit is based on a ratio of a light intensity of the R photosensitive element to the Gr photosensitive element in each of the photosensitive elements, a ratio of a light intensity of the B photosensitive element and the Gb photosensitive element, and an R photosensitive element, a Gr photosensitive element in the imaging sensor, Energy analysis is performed on the average light intensity of each of the Gb photosensitive element and the B photosensitive element, and the state of the infrared light is determined, including:

If the ratio of the light intensity of the R photosensitive element to the Gr photosensitive element in each of the photosensitive elements, the ratio of the light intensity of the B photosensitive element and the Gb photosensitive element of each of the photosensitive elements to each of the photosensitive elements is 0, and The average light intensity corresponding to each of the R photosensitive element, the Gr photosensitive element, the Gb photosensitive element, and the B photosensitive element in the imaging sensor is 0, and the determining unit determines that the state of the infrared light is on.

According to the first or second possible implementation manner of the third aspect, in a third possible implementation manner, the energy analysis module further includes: a white point selection unit;

Before the channel selecting unit respectively determines the light intensity of each of the photosensitive elements according to the imaging data, the method further includes:

The white point selection unit performs selection of white point data in the imaging data;

Correspondingly, the channel selection unit respectively determines the light intensity of each component in the photosensitive element according to the imaging data, including:

The channel selection unit determines the light intensity of each of the photosensitive elements based on the white point data.

According to a third possible implementation manner of the third aspect, in a fourth possible implementation manner, the energy analysis module further includes: an amplitude filtering unit;

Before the channel selecting unit respectively determines the light intensity of each component in the photosensitive element according to the white point data, the method further includes:

The amplitude filtering unit performs amplitude filtering on the white point data.

According to a fourth possible implementation manner of the third aspect, in a fifth possible implementation manner, the energy analysis module further includes: a region weight unit;

Calculating, according to the light intensity of each element in the photosensitive element, a ratio of light intensities corresponding to light intensity of the R photosensitive element and the Gr photosensitive element in each of the photosensitive elements, wherein the photosensitive element is in each set of photosensitive elements And before the ratio of the light intensity of the Gb photosensitive element, it also includes:

The area weighting unit assigns different weights to the light intensities of the elements in the photosensitive elements corresponding to the white point data in different areas.

In a fourth aspect, an embodiment of the present invention further provides an infrared control method, including:

The light intensity statistic module of the infrared control device counts the average sensitivity of the imaging sensor according to the imaging data output by the imaging sensor, and sends the average sensitivity to the sliding filter module of the infrared control device;

The sliding filter module performs sliding filtering on the average photosensitive intensity, and sends the sliding comparison filter to the window comparison module and the light intensity analysis module of the infrared control device;

The light intensity analysis module performs a light intensity analysis according to the average light intensity, determines a state of the infrared light, and if the determination result is on, outputs feedback information to the window comparison module;

The window comparison module outputs a control signal to the control module of the infrared control device according to the average photosensitive intensity and the feedback information;

The control module controls the state of the infrared filter according to the control signal.

According to the fourth aspect, in a first possible implementation manner of the fourth aspect, the light intensity analysis module includes: a sampling processing unit and a determining unit;

The light intensity analysis module performs a light intensity analysis according to the average light intensity, and determines a state of the infrared light. If the determination result is on, outputting feedback information to the window comparison module includes:

The sampling processing unit samples the average photosensitive intensity for a preset time to obtain a change amplitude of the average photosensitive intensity;

The determining unit compares the change amplitude with a preset amplitude, and determines a state of the infrared light according to the comparison result; if the infrared light is on, the change amplitude is used as the feedback information Sended to the window comparison module;

Correspondingly, the window comparison module outputs according to the average photosensitive intensity and the feedback information. The control signal to a control module for the infrared control device includes:

The window comparison module uses the difference between the average photosensitive intensity and the change amplitude as input data, and controls the state of the infrared filter compared with an open threshold and a closed threshold.

According to a first possible implementation manner of the fourth aspect, in a second possible implementation manner, the determining unit compares the change amplitude with a preset amplitude, and determines the infrared according to the comparison result The status of the lights, including:

If the change amplitude is less than the preset amplitude, the determining unit determines that the infrared light is off; if the change amplitude is greater than or equal to the preset amplitude, the determining unit determines the The infrared light is on.

In a fifth aspect, the embodiment of the present invention further provides a camera, including at least: an infrared filter, an imaging sensor, and an infrared control device; wherein the infrared filter is connected to the imaging sensor, and respectively Infrared control devices are connected;

The infrared control device is the infrared control device according to any one of the above aspects, or the infrared control device according to any of the above fourth aspects.

The infrared control device, the method and the camera of the embodiment of the invention can determine the state of the infrared lamp through the energy analysis module or the illumination analysis module, and then control the state of the red filter through the control unit, thereby avoiding the opening of the infrared lamp. This results in repeated switching of the infrared filter to ensure the stability of the imaging of the camera.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a schematic structural diagram of an infrared control device according to Embodiment 1 of the present invention;

2 is a schematic structural diagram of an infrared control device according to Embodiment 2 of the present invention;

3 is a schematic structural diagram of an infrared control device according to Embodiment 3 of the present invention;

4 is a schematic structural diagram of an infrared control device according to Embodiment 4 of the present invention;

FIG. 5 is a schematic structural diagram of an infrared control device according to Embodiment 5 of the present invention; FIG.

6 is a flowchart of an infrared control method according to Embodiment 6 of the present invention;

7 is a flowchart of an infrared control method according to Embodiment 7 of the present invention;

FIG. 8 is a schematic structural diagram of a camera according to Embodiment 8 of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Embodiment 1

FIG. 1 is a schematic structural diagram of an infrared control device according to Embodiment 1 of the present invention. The infrared control device of this embodiment is suitable for a camera having an infrared lamp and an infrared filter. The camera may be, for example, a network camera (IP Camera) or a video monitoring device. As shown in FIG. 1 , the infrared control device 100 of the present embodiment includes a light intensity statistics module 101 , a sliding filter module 102 , a window comparison module 103 , an energy analysis module 104 , and a control module 105 . The light intensity statistics module 101, the sliding filter module 102, the window comparison module 103, and the control module 105 are sequentially connected.

The light intensity statistic module 101 is further connected to an imaging sensor 106 for counting the average photographic intensity of the imaging sensor 106 according to the imaging data output by the imaging sensor 106 and transmitting it to the sliding filter module 102.

Specifically, the imaging sensor includes at least one photosensitive element, and the photosensitive elements may specifically be Charge Coupled Device (CCD) or Complementary Metal-Oxide Semiconductor (CMOS).

The imaging data refers to data of an unprocessed original imaged image, that is, RAW image data. According to the imaging data, the RGB energy analysis is actually calculated according to the imaging data, respectively, to obtain the respective energies of visible light of different wavelengths of R, G, and B in the incident light, such as light intensity, and R, G, and B obtained according to the calculation. The respective energy levels of different wavelengths of visible light determine whether there is infrared light in the incident light. If so, the infrared light of the camera is turned on, and if not, the infrared light of the camera is off.

The sliding filter module 102 is configured to perform sliding filtering on the average photosensitive intensity and send the same to the window comparison module 103.

The sliding module 102 performs sliding filtering on the average photosensitive intensity obtained by the light intensity statistics module 101, so that the fluctuation of the average photosensitive intensity is more stable, thereby making the control of the infrared filter more stable and better ensuring imaging stability. .

The window comparison module 103 is configured to compare the average photosensitive intensity with an open threshold; if the average photosensitive intensity is greater than the open threshold, output a first control signal to the control module 105.

The energy analysis module 104 is connected to the imaging sensor 106 and the control module 105, and is configured to perform red, green and blue RGB energy analysis according to the imaging data to determine the state of the infrared light; if the state of the infrared light is on, the control The module sends a second control signal, and if the state of the infrared light is off, sends a third control signal to the control module 105.

The control module 105 is further connected to the infrared filter 107, and is configured to control the state of the infrared filter 107 to be off according to the first control signal and the second control signal, according to the first control signal and the third The control signal controls the state of the infrared filter to be on.

Since the infrared light is turned on in a dark environment to improve the night vision capability of the camera, that is, the imaging effect in a dark environment. If it is determined that the infrared light is on, that is, the current external light is weak, infrared light is required to fill the light, and the infrared light is not filtered through the infrared filter, thereby controlling the infrared filter. Stay closed. If it is determined that the infrared light is off, that is, the current external illumination has met the imaging illumination requirement, and it is not necessary to turn on the infrared light to fill the light.

When the average photosensitive intensity is greater than the opening threshold, the first control information is output to turn on the infrared filter, and according to the third control signal, the infrared light is turned on, that is, the average light intensity is due to the infrared light. The emitted infrared light is increased, so it is necessary to control the infrared filter to be in a closed state. According to the third control signal, the infrared light is turned off, that is, the current average intensity is not increased by the infrared light emitted by the infrared light, so the infrared filter needs to be turned on to filter out the infrared to make the image clearer. .

Controlling the state switching of the infrared filter according to the third control information, and actually controlling the state switching of the infrared filter to be turned on or off according to the intensity of the current external illumination.

The state of the infrared filter is respectively controlled according to the first control signal and the second control signal or the third control signal, and the infrared filter is actually controlled according to the current external light intensity and the on state of the infrared light. . Therefore, it is possible to avoid directly controlling the infrared filter according to the incident light intensity, that is, external illumination, and the infrared filter caused by repeated switching, especially in a dark environment, causes imaging instability.

It should be noted that the infrared control device provided in this embodiment may be an integrated circuit having the above functions, or may be implemented by integrating a software program having the above functions into an entity such as a processor.

In this embodiment, the average photosensitive intensity of the imaging sensor and the state of the infrared light can be determined, and the infrared filter is controlled according to the average photosensitive intensity and the state of the infrared light, thereby avoiding infrared due to the opening of the infrared light. The filter is repeatedly switched to ensure the stability of the imaging of the camera.

In the meantime, the infrared control device provided in this embodiment can be integrated into the camera in a hardware and/or software manner, so that the camera does not need an infrared light control interface, and does not need an external detection circuit to implement, and the hardware overhead is small.

Embodiment 2

This embodiment also provides an infrared control device. FIG. 2 is a schematic structural diagram of an infrared control device according to Embodiment 2 of the present invention. Based on the above solution, as shown in FIG. 2, the energy analysis module 104 includes a channel selection unit 201, a ratio calculation unit 202, and a determination unit 203. The imaging sensor 106 includes: at least one set of photosensitive elements; each set of photosensitive elements includes: an R photosensitive element, a Gr photosensitive element, a Gb photosensitive element, and a B photosensitive element.

The set of photosensitive elements corresponds to one pixel, and one pixel includes 4 photosensitive dots. The four photosensitive dots are points corresponding to the R photosensitive element, the Gr photosensitive element, the Gb photosensitive element, and the B photosensitive element.

The channel selection unit 201 is connected to the imaging sensor 106 and the ratio calculation unit 202 for determining the light intensity of each component in the photosensitive element according to the imaging data, and transmitting the light intensity to the ratio calculation unit 202.

The ratio calculating unit 202 is connected to the determining unit 203, and is configured to respectively calculate a ratio of light intensity corresponding to the light intensity of the R photosensitive element and the Gr photosensitive element in each of the photosensitive elements according to the light intensity of each element in the photosensitive element, and the B photosensitive element and Gb photosensitive element corresponding to the ratio of light intensity, and sent to the determining unit;

The average light intensity corresponding to each of the R photosensitive element, the Gr photosensitive element, the Gb photosensitive element, and the B photosensitive element in the imaging sensor 106 is calculated based on the light intensity of each element in the photosensitive element.

Specifically, the ratio of the light intensity corresponding to the R photosensitive element and the Gr photosensitive element indicates the influence of red light on the green light, which can be represented by R/Gr, and the ratio of the light intensity of the B photosensitive element and the Gb photosensitive element indicates the blue light to the green light. The effect can be expressed by B/Gb.

The average light intensity corresponding to each of the photosensitive elements actually refers to the average value of the light intensities of all the R photosensitive elements in the imaging sensor, the average value of the light intensities of all the Gr photosensitive elements, the average of the light intensities of all the Gb photosensitive elements, and all The average value of the light intensity of the B photosensitive element.

The determining unit 203 is further connected to the control module 105, and is configured to, according to the ratio of the light intensity corresponding to the R photosensitive element and the Gr photosensitive element in each set of photosensitive elements, the B photosensitive element and the Gb photosensitive element The ratio of the light intensity and the average light intensity corresponding to each of the R photosensitive element, the Gr photosensitive element, the Gb photosensitive element, and the B photosensitive element in the imaging sensor 106 are subjected to energy analysis to determine the state of the infrared light.

Preferably, the determining unit 203 is further configured to: if the ratio of the light intensity of the R photosensitive element to the Gr photosensitive element in each set of photosensitive elements, the ratio of the light intensity of the B photosensitive element and the Gb photosensitive element of each set of the photosensitive elements, and 1 The absolute value of the difference is 0, and the average light intensity corresponding to each of the R photosensitive element, the Gr photosensitive element, the Gb photosensitive element, and the B photosensitive element in the imaging sensor is 0, and the infrared light is determined The status is on.

It should be noted that the “differential value of 0” in this embodiment is not absolutely 0, and may be approximately equal to 0. In the dark environment, the intensity of natural light is weak, and the intensity of light induced by the imaging sensor is mostly the infrared light emitted by the infrared light, and for the infrared red line, the different photosensitive elements can be sensed. That is to say, the light intensity induced by each of the different photosensitive elements is similar, and thus the average light intensity of each of R, Gr, B, and Gb is close, and the difference between them is 0. R/Gr and B/Gb are also similar to each other because the light intensities induced by the different photosensitive elements are close to 1, so the difference from 1 is also zero.

The solution of the embodiment may be based on the foregoing embodiment, specifically analyzing the light intensity of each photosensitive element in the imaging sensor through the channel selection unit, the ratio calculation unit and the determination unit, and determining whether the infrared light is turned on, and the infrared light thereof The determination scheme is more precise, and the infrared filter is controlled to ensure the stability of the imaging.

Embodiment 3

This embodiment also provides an infrared control device. FIG. 3 is a schematic structural diagram of an infrared control device according to Embodiment 3 of the present invention. As shown in FIG. 3, the energy analysis module 104 further includes a white point selection unit 301.

The white point selection unit 301 is connected to the imaging sensor 106 and the channel selection unit 201 for selecting white point data in the imaging data, and transmitting the selected white point data to the channel selection unit 201.

The channel selection unit 201 is further configured to respectively determine light intensities of the components of the at least one set of photosensitive elements according to the white point data.

Specifically, the white point data may be data that matches white balance in the imaging data. It should be noted that the white point data in this embodiment is not absolute white point data, that is, the light intensity of each of the R, G, and B colors is not completely equal, as long as the difference between them is It can be within the preset range. The intensity of each component is determined by the selected white point data, so that the embodiment ensures the stability of the image while ensuring that the image has no chromatic aberration.

Further, in the above solution, the energy analysis module 104 further includes: an amplitude filtering unit 302. The amplitude filtering unit 302 is located between the white point selecting unit 301 and the channel selecting unit 201, and is configured to determine the light intensity of each component in the photosensitive member before the channel selecting unit 201 respectively determines the light intensity of each component in the photosensitive member. Amplitude filtering is performed to select the white point data.

In the above solution, the energy analysis module 104 further includes: a region weight unit 303;

The area weight unit 303 is connected to the ratio calculating unit 202 for calculating, in the ratio calculating unit 202, the ratio of the light intensity corresponding to the R photosensitive element and the Gr photosensitive element in each group of the photosensitive elements according to the light intensity of each element in the photosensitive element. Before the ratio of the light intensity of the B photosensitive element and the Gb photosensitive element in each group of photosensitive elements, the corresponding light intensity is assigned to the light intensity of each of the photosensitive elements determined according to the white point data in different regions.

Due to the difference in the sensitizing ability of the corresponding photosensitive elements in the imaging sensor in different regions, different incident light intensities may generate the same imaging data, and thus different components of the photosensitive elements in different regions are configured with different weights to obtain by weighting operation. More accurate light intensity corresponding to each component.

Based on the above solution, the white point selection unit performs white point selection, and analyzes the white point data to ensure that the image has no chromatic aberration; the area weight unit makes the calculation corresponding to the light intensity of each component more. Accurate, so as to better ensure the stability of the image.

Embodiment 4

This embodiment also provides an infrared control device. 4 is an infrared provided by Embodiment 4 of the present invention. Schematic diagram of the structure of the control device. As shown in FIG. 4 , the infrared control device 400 includes a light intensity statistics module 401 , a sliding filter module 402 , a light intensity analysis module 403 , a window comparison module 404 , and a control module 405 . The light intensity statistics module 401, the sliding filter module 402, the window comparison module 404, and the control module 405 are sequentially connected.

The light intensity statistics module 401 is coupled to the imaging sensor 406 for counting the average light intensity of the imaging sensor 406 according to the imaging data output by the imaging sensor 406 and transmitting the average light intensity to the sliding filter module 402.

The sliding filter module 402 is configured to perform sliding filtering on the average photosensitive intensity and send the same to the window comparison module 404 and the light intensity analysis module 403.

The light intensity analysis module 403 is connected to the imaging sensor 406 and the window comparison module 404 for performing the intensity intensity analysis according to the average light intensity, determining the state of the infrared light, and if the determination result is on, outputting feedback information to the window. Comparison module 404.

The window comparison module 404 is configured to output a control signal to the control module 405 according to the average light intensity and the feedback information.

The control module 405 is further connected to the infrared filter 407 for controlling the state of the infrared filter 407 according to the control signal.

Specifically, the photographic intensity analysis is performed based on the average sensitometric intensity of the imaging sensor, and the change in the photographic intensity is monitored. If the change in the intensity of the light is large, it can be considered to be caused by the opening of the infrared light. Correspondingly, if the change in the intensity of the light is small, the normal light intensity of the natural light fluctuates, and thus the infrared light is turned off. The feedback information output by the light intensity analysis module is sent to the window comparison module, so that the window comparison module compensates the average photosensitive intensity according to the feedback information, so that the window comparison module and the control module perform infrared filtering according to the compensated photosensitive intensity. The state control of the slice. The feedback information may be, for example, a fluctuation amplitude of the light intensity, and the imaging data is compensated according to the feedback information, which may be to reduce the light intensity added by the infrared light in the imaging data. The window comparison module and the control module perform state control of the infrared filter according to the compensated imaging data, which is avoided by reducing the influence of the infrared light. The infrared filter is repeatedly switched to ensure the stability of the imaging.

In the embodiment, the light intensity analysis module can determine the state of the infrared light according to the light intensity analysis, and if the infrared light is turned on, the window comparison module compensates the imaging data through the feedback information, thereby controlling the infrared filter through the control module. The light sheet is controlled to reduce the influence of the infrared light and avoid repeated switching of the infrared filter, thereby ensuring the stability of the image.

Embodiment 5

This embodiment also provides an infrared control device. FIG. 5 is a schematic structural diagram of an infrared control device according to Embodiment 5 of the present invention. As shown in FIG. 5, the light intensity analysis module 403 includes: a sampling processing unit 501 and a determining unit 502.

The sampling processing unit 501 is connected to the sliding filter module 402 and the determining unit 502 for sampling the average photosensitive intensity for a preset time to obtain a variation amplitude of the average photosensitive intensity.

The determining unit 502 is connected to the window comparison module 404, and is configured to compare the change amplitude with a preset amplitude, and determine a state of the infrared light according to the comparison result; if the infrared light is on, the change amplitude is This feedback information is sent to the window comparison module 404.

Correspondingly, the window comparison module 404 is further configured to use the difference between the average photosensitive intensity and the change amplitude as input data, and compare the state of the infrared filter 407 with the opening threshold and the closing threshold.

Preferably, the determining unit 502 is further configured to: if the change amplitude is less than the preset amplitude, determine that the infrared light is off; if the change amplitude is greater than or equal to the preset amplitude, determine that the infrared light is Open.

The preset threshold may specifically be the same as the open threshold. Usually the open threshold is greater than the shutdown threshold.

In this embodiment, the amplitude of the change in the average sensitivity obtained by the sampling processing unit is more accurate, thereby better ensuring the stability of the imaging.

Embodiment 6

This embodiment provides an infrared control method. The method can be performed by an infrared control device. FIG. 6 is a flowchart of an infrared control method according to Embodiment 6 of the present invention. As shown in Figure 6, the method is specific Includes the following:

Step 601: The light intensity statistics module of the infrared control device counts the average light intensity of the image sensor according to the imaging data output by the imaging sensor, and sends the image to the sliding filter module of the infrared control device.

Step 602: The sliding filter module performs sliding filtering on the average photosensitive intensity, and the sliding filtering is sent to the window comparison module of the infrared control device.

Step 603: The window comparison module compares the average photosensitive intensity with an open threshold; if the average photosensitive intensity is greater than the open threshold, the first control signal is output to the control module of the infrared control device.

Step 604: The energy analysis module of the infrared control device performs red, green, and blue RGB energy analysis according to the imaging data to determine the state of the infrared light.

Step 605: If the state of the infrared light is on, the energy analysis module sends a second control signal to the control module; or, if the state of the infrared light is off, the energy analysis module sends a third control signal to the control module. .

Step 606: The control module controls the state of the infrared filter to be off according to the first control information and the second control signal, and controls the state of the infrared filter to be turned on according to the first control signal and the third control signal. .

Further, in the above solution, the energy analysis module includes: a channel selection unit, a ratio calculation unit, and a determination unit; the imaging sensor includes: a photosensitive element; each group of the photosensitive elements includes: an R photosensitive element, a Gr photosensitive element, and a Gb photosensitive element; B photosensitive element.

The energy analysis module of the infrared control device in step 601 of the foregoing solution performs red, green, and blue RGB energy analysis according to the imaging data to determine the state of the infrared light, and specifically includes:

The channel selection unit respectively determines the light intensity of each component in the photosensitive element according to the imaging data;

The ratio calculation unit respectively calculates a ratio of light intensity corresponding to the light intensity of the R photosensitive element and the Gr photosensitive element in each of the photosensitive elements according to the light intensity of each element in the photosensitive element, and a ratio of the light intensity of the B photosensitive element and the Gb photosensitive element; The light intensity of each component in the photosensitive element is calculated separately for the imaging The average light intensity corresponding to each of the R photosensitive element, the Gr photosensitive element, the Gb photosensitive element, and the B photosensitive element in the sensor;

The determining unit is based on a ratio of a light intensity of the R photosensitive element to the Gr photosensitive element in each of the photosensitive elements, a ratio of the light intensity of the B photosensitive element and the Gb photosensitive element, and an R photosensitive element, a Gr photosensitive element, and a Gb in the imaging sensor. The average light intensity of each of the photosensitive element and the B photosensitive element is subjected to energy analysis to determine the state of the infrared lamp.

Further, in the above aspect, the determining unit is based on a ratio of a light intensity of the R photosensitive element to the Gr photosensitive element in each of the photosensitive elements, a ratio of a light intensity of the B photosensitive element and the Gb photosensitive element, and an R in the imaging sensor. The average light intensity corresponding to each of the photosensitive element, the Gr photosensitive element, the Gb photosensitive element, and the B photosensitive element is subjected to energy analysis to determine the state of the infrared light, and specifically includes:

If the ratio of the light intensity of the R photosensitive element to the Gr photosensitive element in each group of photosensitive elements, the ratio of the corresponding light intensity of the B photosensitive element and the Gb photosensitive element in each set of photosensitive elements is 0, and the imaging is The average light intensity corresponding to each of the R photosensitive element, the Gr photosensitive element, the Gb photosensitive element, and the B photosensitive element in the sensor is 0, and the determining unit determines that the state of the infrared light is on.

Preferably, in the foregoing solution, the capability analysis module further includes: a white point selection unit. Before the channel selecting unit determines the light intensity of each component in the photosensitive element according to the imaging data, the method further includes:

The white point selection unit performs selection of white point data in the imaging data.

Correspondingly, the channel selecting unit respectively determines the light intensity of each component in the photosensitive element according to the imaging data, and specifically includes:

Further, in the solution as described above, the energy analysis module further includes: an amplitude filtering unit. In the above, before the channel selecting unit determines the light intensity of each component in the photosensitive element according to the white point data, the method further includes:

Based on the above solution, the energy analysis module further includes: a region weight unit. The ratio calculation unit as described above calculates a ratio of light intensity corresponding to the light intensity of the R photosensitive element and the Gr photosensitive element in each of the photosensitive elements, respectively, according to the light intensity of each element in the photosensitive element, and the photosensitive element of each of the photosensitive elements And before the ratio of the light intensity of the Gb photosensitive element, it also includes:

The area weighting unit assigns different weights to the light intensities of the elements in the photosensitive element corresponding to the white point data in different areas.

The embodiment of the present invention may be implemented by the infrared control device according to any one of the foregoing Embodiments 1 to 3. The specific implementation process and the explanation are similar to the foregoing embodiment, and details are not described herein again.

Example 7

This embodiment also provides an infrared control method. The method is performed by an infrared control device. FIG. 7 is a flowchart of an infrared control method according to Embodiment 7 of the present invention. As shown in FIG. 7, the method specifically includes the following:

Step 701: The light intensity statistics module of the infrared control device counts the average sensitivity of the imaging sensor according to the imaging data output by the imaging sensor, and sends the average sensitivity to the sliding filter module of the infrared control device.

Step 702: The sliding filter module performs sliding filtering on the average photosensitive intensity, and sends the sliding filter to the window comparison module and the light intensity analysis module of the infrared control device.

Step 703: The light intensity analysis module performs light intensity analysis according to the average light intensity, determines the state of the infrared light, and if the determination result is on, outputs feedback information to the window comparison module.

Step 704: The window comparison module outputs a control signal to the control module of the infrared control device according to the average photosensitive intensity and the feedback information.

Step 705: The control module controls the state of the infrared filter according to the control signal.

Further, in the solution as described above, the light intensity analysis module includes: a sampling processing unit and a determination unit.

In the above step 703, the light intensity analysis module performs the photosensitive intensity score according to the average photosensitive intensity. Determining, determining the state of the infrared lamp, and if the determination result is on, outputting feedback information to the window comparison module, including:

The determining unit compares the change amplitude with the preset amplitude, and determines the state of the infrared light according to the comparison result; if the infrared light is turned on, the change amplitude is sent to the window comparison module as the feedback information.

Correspondingly, in step 704, the window comparison module outputs the control signal to the control module of the infrared control device according to the average sensitivity and the feedback information, including:

The window comparison module takes the difference between the average photosensitive intensity and the change amplitude as input data, and controls the state of the infrared filter compared with the open threshold and the closed threshold.

On the basis of the foregoing solution, the determining unit compares the change amplitude with the preset amplitude, and determines the state of the infrared light according to the comparison result, which specifically includes:

If the change amplitude is less than the preset amplitude, the determining unit determines that the infrared light is off; if the change amplitude is greater than or equal to the preset amplitude, the determining unit determines that the infrared light is on.

The embodiment of the present invention may be implemented by the infrared control device according to any one of the foregoing embodiment 4 or the fifth embodiment. The specific implementation process and the explanation are similar to the foregoing embodiment, and details are not described herein again.

Example eight

This embodiment also provides a camera. FIG. 8 is a schematic structural diagram of a camera according to Embodiment 8 of the present invention. As shown in FIG. 8, the camera 800 includes at least an infrared filter 801, an imaging sensor 802, and an infrared control device 803.

The infrared filter 801 is connected to the imaging sensor 802 and is respectively connected to the infrared control device 803.

The infrared control device 801 may be the infrared control device according to any one of the first to third embodiments, or may be the infrared control device according to any one of the above embodiments.

The camera provided in this embodiment includes the infrared control device provided in any of the above embodiments, and the specific beneficial effects thereof are similar to those in the foregoing embodiment, and details are not described herein again.

One of ordinary skill in the art will appreciate that all or part of the steps to implement the various method embodiments described above may be accomplished by hardware associated with the program instructions. The aforementioned program can be stored in a computer readable storage medium. The program, when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

An infrared control device, comprising: a light intensity statistics module, a sliding filter module, a window comparison module, an energy analysis module and a control module; the light intensity statistics module, the sliding filter module, and the window comparison module And the control module is sequentially connected;

The light intensity statistic module is further connected to the imaging sensor, and configured to calculate an average photosensitive intensity of the imaging sensor according to the imaging data output by the imaging sensor, and send the average photosensitive intensity to the sliding filter module;

The sliding filter module is configured to perform sliding filtering on the average photosensitive intensity and send the result to the window comparison module;

The window comparison module is configured to compare the average photosensitive intensity with an opening threshold; if the average photosensitive intensity is greater than the opening threshold, outputting a first control signal to the control module;

The energy analysis module is connected to the imaging sensor and the control module, and is configured to perform red, green and blue RGB energy analysis according to the imaging data to determine a state of the infrared light; if the state of the infrared light is on Sending a second control signal to the control module, and if the state of the infrared light is off, sending a third control signal to the control module;

The control module is further connected to the infrared filter, configured to control, according to the first control signal and the second control signal, a state of the infrared filter to be off, according to the first control signal and The third control signal controls the state of the infrared filter to be on.
The device according to claim 1, wherein the energy analysis module comprises: a channel selection unit, a ratio calculation unit, and a determination unit; the imaging sensor comprises: at least one set of photosensitive elements; each set of photosensitive elements comprises: R photosensitive element, Gr photosensitive element, Gb photosensitive element and B photosensitive element;

The channel selection unit is connected to the imaging sensor and the ratio calculation unit, and configured to respectively determine light intensity of each component in the photosensitive element according to the imaging data, and send the light intensity to the ratio calculation unit;

The ratio calculating unit is further connected to the determining unit, and configured to respectively calculate a ratio of light intensity corresponding to the light intensity of the R photosensitive element and the Gr photosensitive element in each of the photosensitive elements according to light intensity of each element in the photosensitive element a ratio of the light intensity of the B photosensitive element and the Gb photosensitive element, and sent to the determining unit;

Calculating, according to the light intensity of each element in the photosensitive element, an average light intensity corresponding to each of the R photosensitive element, the Gr photosensitive element, the Gb photosensitive element, and the B photosensitive element in the imaging sensor, and transmitting to the determining unit;

The determining unit is further connected to the control module, and configured to, according to the ratio of the light intensity of the R photosensitive element to the Gr photosensitive element in each of the photosensitive elements, the ratio of the light intensity of the B photosensitive element and the Gb photosensitive element, And an energy analysis of the average light intensity corresponding to each of the R photosensitive element, the Gr photosensitive element, the Gb photosensitive element, and the B photosensitive element in the imaging sensor, and determining the state of the infrared light.
The device according to claim 2, characterized in that

The determining unit is further configured to: if the ratio of the light intensity of the R photosensitive element to the Gr photosensitive element in each of the photosensitive elements, the ratio of the light intensity of the B photosensitive element and the Gb photosensitive element in each set of the photosensitive elements, and The difference between the R photosensitive element, the Gr photosensitive element, the Gb photosensitive element, and the B photosensitive element is 0, and the infrared light is determined. The status is on.
The device according to claim 2 or 3, wherein the energy analysis module further comprises: a white point selection unit;

The white point selection unit is connected to the imaging sensor and the channel selection unit for performing white point data selection in the imaging data, and transmitting the selected white point data to the channel selection unit;

The channel selection unit is further configured to respectively determine light intensities of the components in the photosensitive element according to the white point data.
The device according to claim 4, wherein the energy analysis module further comprises: Amplitude filtering unit;

The amplitude filtering unit is located between the white point selecting unit and the channel selecting unit, before the channel selecting unit respectively determines the light intensity of each component in the photosensitive element according to the white point data And performing amplitude filtering on the white point data.
The device according to claim 5, wherein the energy analysis module further comprises: a region weight unit;

The area weighting unit is connected to the ratio calculating unit, and configured to calculate, in the ratio calculating unit, the R photosensitive element and the Gr sensing element in each of the photosensitive elements according to the light intensity of each component in the photosensitive element. a ratio of the light intensity corresponding to the component, the ratio of the light intensity of the B photosensitive element and the Gb photosensitive element in each of the photosensitive elements, the components of the photosensitive element respectively determined according to the white point data in different regions The weight corresponding to the light intensity configuration.
An infrared control device, comprising: a light intensity statistics module, a sliding filter module, a light intensity analysis module, a window comparison module, a control module; the light intensity statistics module, the sliding filter module, and the window comparison The module and the control module are sequentially connected;

The light intensity statistics module is connected to the imaging sensor, and configured to calculate an average photosensitive intensity of the imaging sensor according to the imaging data output by the imaging sensor, and send the average photosensitive intensity to the sliding filter module;

The sliding filter module is configured to perform sliding filtering on the average photosensitive intensity, and send the image to the window comparison module and the light intensity analysis module;

The light intensity analysis module is connected to the imaging sensor and the window comparison module, and is configured to perform a light intensity analysis according to the average light intensity, determine a state of the infrared light, and if the determination result is on, output Feedback information to the window comparison module;

The window comparison module is configured to output a control signal to the control module according to the average photosensitive intensity and the feedback information;

The control module is further connected to the infrared filter for the red color according to the control signal The state of the outer filter is controlled.
The apparatus according to claim 7, wherein the light intensity analysis module comprises: a sampling processing unit and a determining unit;

The sampling processing unit is connected to the sliding filter module and the determining unit, and is configured to sample the average photosensitive intensity within a preset time to obtain a change amplitude of the average photosensitive intensity;

The determining unit is connected to the window comparison module, and is configured to compare the change amplitude with a preset amplitude, and determine a state of the infrared light according to the comparison result; if the infrared light is on Transmitting the change amplitude as the feedback information to the window comparison module;

Correspondingly, the window comparison module is further configured to use the difference between the average photosensitive intensity and the change amplitude as input data, and compare the state of the infrared filter with an open threshold and a closed threshold. control.
The device of claim 8 wherein:

The determining unit is further configured to: if the change amplitude is less than the preset amplitude, determine that the infrared light is off; if the change amplitude is greater than or equal to the preset amplitude, determine the The infrared light is on.
An infrared control method, comprising:

The light intensity statistic module of the infrared control device counts the average photosensitive intensity of the imaging sensor according to the imaging data output by the imaging sensor, and sends it to the sliding filter module of the infrared control device;

The sliding filter module performs sliding filtering on the average photosensitive intensity, and the sliding filtering is sent to a window comparison module of the infrared control device;

The window comparison module compares the average photosensitive intensity with an opening threshold; if the average photosensitive intensity is greater than the opening threshold, outputting a first control signal to a control module of the infrared control device;

The energy analysis module of the infrared control device performs red, green and blue RGB according to the imaging data. Energy analysis to determine the state of the infrared light;

If the state of the infrared light is on, the energy analysis module sends a second control signal to the control module; or, if the state of the infrared light is off, the energy analysis module sends a message to the control module Three control signals;

The control module controls the state of the infrared filter to be off according to the first control information and the second control signal; and controls the infrared filter according to the first control signal and the third control signal The status is on.
The method according to claim 10, wherein the energy analysis module comprises: a channel selection unit, a ratio calculation unit, and a determination unit; the imaging sensor comprises: a photosensitive element; each set of photosensitive elements comprises: an R photosensitive element , Gr photosensitive element, Gb photosensitive element and B photosensitive element;

The energy analysis module of the infrared control device performs red, green, and blue RGB energy analysis according to the imaging data, and determines the state of the infrared light, including:

The channel selection unit respectively determines light intensities of the elements in the photosensitive element according to the imaging data;

The ratio calculating unit respectively calculates a ratio of light intensity corresponding to the light intensity of the R photosensitive element and the Gr photosensitive element in each of the photosensitive elements according to the light intensity of each of the photosensitive elements, and the light intensity of the B photosensitive element and the Gb photosensitive element a ratio; according to the light intensity of each element in the photosensitive element, respectively calculating an average light intensity corresponding to each of the R photosensitive element, the Gr photosensitive element, the Gb photosensitive element, and the B photosensitive element in the imaging sensor;

The determining unit is configured according to a ratio of a light intensity corresponding to the R photosensitive element and the Gr photosensitive element in each of the photosensitive elements, a ratio of the light intensity of the B photosensitive element and the Gb photosensitive element, and an R photosensitive element and a Gr photosensitive in the imaging sensor. Energy analysis is performed on the average light intensity corresponding to each of the element, the Gb photosensitive element, and the B photosensitive element, and the state of the infrared lamp is determined.
The method according to claim 11, wherein the determining unit is configured to calculate a ratio of light intensity of the R photosensitive element to the Gr photosensitive element in each of the photosensitive elements, and a B photosensitive element and The ratio of the light intensity of the Gb photosensitive element and the average light intensity of each of the R photosensitive element, the Gr photosensitive element, the Gb photosensitive element, and the B photosensitive element of the imaging sensor are used for energy analysis, and the state of the infrared light is determined, including:

If the ratio of the light intensity of the R photosensitive element to the Gr photosensitive element in each of the photosensitive elements, the ratio of the light intensity of the B photosensitive element and the Gb photosensitive element of each of the photosensitive elements to each of the photosensitive elements is 0, and The average light intensity corresponding to each of the R photosensitive element, the Gr photosensitive element, the Gb photosensitive element, and the B photosensitive element in the imaging sensor is 0, and the determining unit determines that the state of the infrared light is on.
The method according to claim 11 or 12, wherein the energy analysis module further comprises: a white point selection unit;

Before the channel selecting unit respectively determines the light intensity of each of the photosensitive elements according to the imaging data, the method further includes:

The white point selection unit performs selection of white point data in the imaging data;

Correspondingly, the channel selection unit respectively determines the light intensity of each component in the photosensitive element according to the imaging data, including:

The channel selection unit determines the light intensity of each of the photosensitive elements based on the white point data.
The method according to claim 13, wherein the energy analysis module further comprises: an amplitude filtering unit;

Before the channel selecting unit respectively determines the light intensity of each component in the photosensitive element according to the white point data, the method further includes:

The amplitude filtering unit performs amplitude filtering on the white point data.
The method according to claim 14, wherein the energy analysis module further comprises: a region weight unit;

The ratio calculation unit respectively calculates the light intensity according to the light intensity of each element in the photosensitive element The ratio of the light intensity of the R photosensitive element to the Gr photosensitive element in each group of photosensitive elements, before the ratio of the light intensity of the B photosensitive element and the Gb photosensitive element in each set of photosensitive elements, further includes:

The area weighting unit assigns different weights to the light intensities of the elements in the photosensitive elements corresponding to the white point data in different areas.
An infrared control method, comprising:

The light intensity statistic module of the infrared control device counts the average sensitivity of the imaging sensor according to the imaging data output by the imaging sensor, and sends the average sensitivity to the sliding filter module of the infrared control device;

The sliding filter module performs sliding filtering on the average photosensitive intensity, and sends the sliding comparison filter to the window comparison module and the light intensity analysis module of the infrared control device;

The light intensity analysis module performs a light intensity analysis according to the average light intensity, determines a state of the infrared light, and if the determination result is on, outputs feedback information to the window comparison module;

The window comparison module outputs a control signal to the control module of the infrared control device according to the average photosensitive intensity and the feedback information;

The control module controls the state of the infrared filter according to the control signal.
The method according to claim 16, wherein the light intensity analysis module comprises: a sampling processing unit and a determining unit;

The light intensity analysis module performs a light intensity analysis according to the average light intensity, and determines a state of the infrared light. If the determination result is on, outputting feedback information to the window comparison module includes:

The sampling processing unit samples the average photosensitive intensity for a preset time to obtain a change amplitude of the average photosensitive intensity;

The determining unit compares the change amplitude with a preset amplitude, and determines a state of the infrared light according to the comparison result; if the infrared light is on, the change amplitude is used as the feedback information Sended to the window comparison module;

Correspondingly, the window comparison module outputs the control signal to the control module of the infrared control device according to the average photosensitive intensity and the feedback information, including:

The window comparison module uses the difference between the average photosensitive intensity and the change amplitude as input data, and controls the state of the infrared filter compared with an open threshold and a closed threshold.
The method according to claim 17, wherein the determining unit compares the change amplitude with a preset amplitude, and determines the state of the infrared light according to the comparison result, including:

If the change amplitude is less than the preset amplitude, the determining unit determines that the infrared light is off; if the change amplitude is greater than or equal to the preset amplitude, the determining unit determines the The infrared light is on.
A camera, comprising: an infrared filter, an imaging sensor, and an infrared control device; wherein the infrared filter is connected to the imaging sensor and respectively connected to the infrared control device;

The infrared control device is the infrared control device according to any one of claims 1 to 6, or the infrared control device according to any one of claims 7-9.