CN104980639A

CN104980639A - Infrared control device, infrared control method and image camera

Info

Publication number: CN104980639A
Application number: CN201410131994.0A
Authority: CN
Inventors: 李健璋; 许锡雷; 王斌
Original assignee: Hangzhou Huawei Enterprises Communications Technologies Co Ltd
Current assignee: Hangzhou Huawei Enterprises Communications Technologies Co Ltd
Priority date: 2014-04-03
Filing date: 2014-04-03
Publication date: 2015-10-14
Also published as: WO2015149711A1

Abstract

An embodiment of the invention provides an infrared control device, an infrared control method and an image camera. The infrared control device comprises a light intensity statistics module, a sliding filtering module, a window comparison module, an energy analyzing module and a control module. The light intensity statistics module performs statistics for counting an average light induction intensity according to imaging data. The sliding filtering module performs filtering on the average light induction intensity. The window comparison module compares the average light induction intensity with an opening threshold. If the average light induction intensity is higher than the opening threshold, the window comparison module outputs a first control signal, and the energy analyzing module performs energy analysis according to the imaging data for determining the state of an infrared lamp. If the infrared lamp is on, the energy analyzing module transmits a second control signal; and if the infrared lamp is off, the energy analyzing module transmits a third control signal. The control module performs controlling for closing an infrared optical filter according to the first control signal and the second control signal, and performs controlling for opening the infrared optical filter according to the first control signal and the third control signal. The infrared control device, the infrared control method and the image camera provided by an embodiment of the invention can improve imaging stability of the image camera.

Description

Infrared control device, method and video camera

Technical field

The embodiment of the present invention relates to the information processing technology, particularly relates to a kind of infrared control device, method and video camera.

Background technology

The visible ray that the eyes of people can be seen arranges from long to short by wavelength, is followed successively by red, orange, yellow, green, blue, blue, purple.Wherein the wave-length coverage of ruddiness is 0.62 ~ 0.76 μm; The light longer than red light wavelength infrared ray, the naked eyes of people be can't see ultrared.Photosensitive unit due to video camera carries out induction to all incident raies to catch, comprising visible ray, infrared ray etc.For avoiding infrared ray on the impact of image color after imaging, between the camera lens and photosensitive unit of video camera, installing an infrared fileter additional, with filtering infrared ray, thus making this photosensitive unit only respond to visible ray.

But for improving video camera Infravision, can be this camera arrangement infrared lamp, the Infrared be invisible to the naked eye to send people goes to illuminate the object be taken.Now, this infrared fileter need be turned off, be invisible to the naked eye or fuzzy image under taking dark surrounds.But after this infrared fileter cuts out, due to the unlatching of infrared lamp, exterior light is according to raising gradually again, and this infrared fileter can be opened again.Because current external illumination is because shining of infrared lamp is shone, after this infrared fileter is opened, exterior light is according to suddenly by low, closing this infrared fileter again.Therefore, in dark surrounds, easily there is the switching repeatedly of infrared fileter in the video camera configuring infrared lamp.

But, this infrared fileter repeatedly switch the judder easily causing this video camera imaging.

Summary of the invention

The embodiment of the present invention provides a kind of infrared control device, method and video camera, to solve the problem of the judder of video camera imaging in prior art.

First aspect, the embodiment of the present invention provides a kind of infrared control device, comprising: light intensity statistical module, glide filter module, window comparison module, energy spectrometer module and control module; Described light intensity statistical module, described glide filter module, described window comparison module and described control module connect successively;

Described light intensity statistical module, is also connected with imaging sensor, and the imaging data for exporting according to described imaging sensor adds up the average photosensitive intensity of described imaging sensor, and is sent to described glide filter module;

Described glide filter module, for carrying out glide filter to described average photosensitive intensity, and is sent to described window comparison module;

Described window comparison module, for according to described average photosensitive intensity with open compared with threshold value; If open threshold value described in described average photosensitive intensity is greater than, export first and control signal to described control module;

Described energy spectrometer module, is connected with described imaging sensor and described control module, for according to described imaging data, carries out RGB RGB energy spectrometer, judges the state of infrared lamp; If the state of described infrared lamp, for opening, sends the second control signal to described control module, if the state of described infrared lamp is for closing, send the 3rd control signal to described control module;

Described control module, also be connected with infrared fileter, for controlling the state of described infrared fileter according to described first control signal and described second control signal for closing, control the state of described infrared fileter according to described first control signal and described 3rd control signal for opening.

According to first aspect, in the first possibility implementation of first aspect, described energy spectrometer module comprises: channel selection unit, computation unit and identifying unit; Described imaging sensor comprises: at least one group of photo-sensitive cell; Often organize photo-sensitive cell to include: R photo-sensitive cell, Gr photo-sensitive cell, Gb photo-sensitive cell and B photo-sensitive cell;

Described channel selection unit, is connected with described imaging sensor and described computation unit, for determining the luminous intensity of each element in described photo-sensitive cell respectively according to described imaging data, and is sent to described computation unit;

Described computation unit, is also connected with described identifying unit, for the luminous intensity according to element each in described photo-sensitive cell, calculates R photo-sensitive cell and G in described often group photo-sensitive cell respectively _rthe ratio of photo-sensitive cell respective light intensities, B photo-sensitive cell and G _bthe ratio of photo-sensitive cell respective light intensities, and be sent to described identifying unit;

According to the luminous intensity of element each in described photo-sensitive cell, calculate R photo-sensitive cell, G in described imaging sensor respectively _rphoto-sensitive cell, G _bphoto-sensitive cell and each self-corresponding average luminous intensity of B photo-sensitive cell, and be sent to described identifying unit;

Described identifying unit, is also connected with described control module, for often organizing R photo-sensitive cell and G in photo-sensitive cell according to described _rthe ratio of photo-sensitive cell respective light intensities, B photo-sensitive cell and G _br photo-sensitive cell, G in the ratio of photo-sensitive cell respective light intensities and described imaging sensor _rphoto-sensitive cell, G _bphoto-sensitive cell and each self-corresponding average luminous intensity of B photo-sensitive cell carry out energy spectrometer, judge the state of described infrared lamp.

According to the first mode in the cards of first aspect, in the second mode in the cards, described identifying unit, if also often organize R photo-sensitive cell and G in photo-sensitive cell for described _rb photo-sensitive cell and G in the ratio of photo-sensitive cell respective light intensities, described often group photo-sensitive cell _bthe ratio of photo-sensitive cell respective light intensities and the difference of 1 are 0, and R photo-sensitive cell, G in described imaging sensor _rphoto-sensitive cell, G _bphoto-sensitive cell and each self-corresponding average luminous intensity of B photo-sensitive cell difference are each other 0, then determine that the state of described infrared lamp is for opening.

According to the first or the second mode in the cards of first aspect, in the third mode in the cards, described energy spectrometer module also comprises: white point selected cell;

Described white point selected cell, is connected with described imaging sensor and described channel selection unit, for carrying out the selection of white point data in described imaging data, and the described white point data selected is sent to described channel selection unit;

Described channel selection unit, also for determining the luminous intensity of each element in described photo-sensitive cell respectively according to described white point data.

According to the third mode in the cards of first aspect, in the 4th kind of mode in the cards, described energy spectrometer module also comprises: amplitude filter unit;

Described amplitude filter unit, between described white point selected cell and described channel selection unit, before determining the luminous intensity of each element in described photo-sensitive cell in described channel selection unit respectively according to described white point data, amplitude filtering is carried out to described white point data.

According to the 4th kind of mode in the cards of first aspect, in the 5th kind of mode in the cards, described energy spectrometer module also comprises: region weight unit;

Described region weight unit, is connected with described computation unit, in the luminous intensity of described computation unit according to element each in described photo-sensitive cell, calculates R photo-sensitive cell and G in described often group photo-sensitive cell respectively _rthe ratio of photo-sensitive cell respective light intensities, B photo-sensitive cell and G in described often group photo-sensitive cell _bbefore the ratio of photo-sensitive cell respective light intensities, the weight corresponding to the luminous intensity configuration of each element in the described photo-sensitive cell determined respectively according to the described white point data in zones of different.

Second aspect, the embodiment of the present invention provides a kind of infrared control device, comprising: light intensity statistical module, glide filter module, Intensity Analysis module, window comparison module, control module; Described light intensity statistical module, described glide filter module, described window comparison module and described control module connect successively;

Described light intensity statistical module, is connected with imaging sensor, and the imaging data for exporting according to described imaging sensor adds up the average photosensitive intensity of described imaging sensor, and is sent to described glide filter module;

Described glide filter module, for carrying out glide filter to described average photosensitive intensity, and is sent to described window comparison module and described Intensity Analysis module;

Described Intensity Analysis module, is connected with described imaging sensor and described window comparison module, for according to described average photosensitive intensity, carry out photosensitive intensive analysis, judge the state of infrared lamp, if described judged result is for opening, output feedack information is to described window comparison module;

Described window comparison module, for according to described average photosensitive intensity and described feedback information, outputs control signals to described control module;

Described control module, is also connected with infrared fileter, for controlling according to the state of described control signal to described infrared fileter.

According to second aspect, in the first mode in the cards of second aspect, described Intensity Analysis module comprises: sample processing unit, identifying unit;

Described sample processing unit, is connected with described glide filter module and described identifying unit, for described average photosensitive intensity being sampled in Preset Time, obtains the change amplitude of described average photosensitive intensity;

Described identifying unit, is connected with described window comparison module, for described change amplitude and default amplitude being compared, judges the state of described infrared lamp according to described comparative result; If described change amplitude, for opening, is sent to described window comparison module as described feedback information by described infrared lamp;

Corresponding, described window comparison module, also for using the difference of described average photosensitive intensity and described change amplitude as inputting data, compared with opening threshold value, closing threshold value, the state of described infrared fileter is controlled.

According to the first mode in the cards of second aspect, in the second mode in the cards, described identifying unit, if be also less than described default amplitude for described change amplitude, then determines that described infrared lamp is for closing; If described change amplitude is more than or equal to described default amplitude, then determine that described infrared lamp is for opening.

The third aspect, the invention provides a kind of infrared control method, comprising:

The light intensity statistical module of infrared control device adds up the average photosensitive intensity of described imaging sensor according to the imaging data that imaging sensor exports, be sent to the glide filter module of described infrared control device;

Described glide filter module carries out glide filter to described average photosensitive intensity, is sent to the window comparison module of described infrared control device after described glide filter;

Described window comparison module according to described average photosensitive intensity with open compared with threshold value; If open threshold value described in described average photosensitive intensity is greater than, export the control module that first controls signal to described infrared control device;

The energy spectrometer module of described infrared control device, according to described imaging data, is carried out RGB RGB energy spectrometer, is judged the state of infrared lamp;

If the state of described infrared lamp is for opening, described energy spectrometer module sends the second control signal to described control module; Or if the state of described infrared lamp is for closing, described energy spectrometer module sends the 3rd control signal to described control module;

Described control module controls the state of infrared fileter for closing according to described first control information and described second control signal; The state of described infrared fileter is controlled for opening according to described first control signal and described 3rd control signal.

According to the third aspect, in the first mode in the cards of the third aspect, described energy spectrometer module comprises: channel selection unit, computation unit and identifying unit; Described imaging sensor comprises: photo-sensitive cell; Often organize photo-sensitive cell to include: R photo-sensitive cell, Gr photo-sensitive cell, Gb photo-sensitive cell and B photo-sensitive cell;

The energy spectrometer module of described infrared control device, according to described imaging data, is carried out RGB RGB energy spectrometer, is judged the state of infrared lamp, comprising:

Described channel selection unit determines the luminous intensity of each element in described photo-sensitive cell respectively according to described imaging data;

Described computation unit, according to the luminous intensity of element each in described photo-sensitive cell, calculates R photo-sensitive cell and G in described often group photo-sensitive cell respectively _rthe ratio of photo-sensitive cell respective light intensities, B photo-sensitive cell and G _bthe ratio of photo-sensitive cell respective light intensities; According to the luminous intensity of element each in described photo-sensitive cell, calculate R photo-sensitive cell, G in described imaging sensor respectively _rphoto-sensitive cell, G _bphoto-sensitive cell and each self-corresponding average luminous intensity of B photo-sensitive cell;

Described identifying unit often organizes R photo-sensitive cell and G in photo-sensitive cell according to described _rthe ratio of photo-sensitive cell respective light intensities, B photo-sensitive cell and G _br photo-sensitive cell, G in the ratio of photo-sensitive cell respective light intensities and described imaging sensor _rphoto-sensitive cell, G _bphoto-sensitive cell and each self-corresponding average luminous intensity of B photo-sensitive cell carry out energy spectrometer, judge the state of described infrared lamp.

According to the first possibility implementation of the third aspect, in the second possibility implementation, described identifying unit often organizes R photo-sensitive cell and G in photo-sensitive cell according to described _rthe ratio of photo-sensitive cell respective light intensities, B photo-sensitive cell and G _br photo-sensitive cell, G in the ratio of photo-sensitive cell respective light intensities and described imaging sensor _rphoto-sensitive cell, G _bphoto-sensitive cell and each self-corresponding average luminous intensity of B photo-sensitive cell carry out energy spectrometer, judge the state of described infrared lamp, comprising:

Often R photo-sensitive cell and G in photo-sensitive cell is organized if described _rb photo-sensitive cell and G in the ratio of photo-sensitive cell respective light intensities, described often group photo-sensitive cell _bthe ratio of photo-sensitive cell respective light intensities and the difference of 1 are 0, and R photo-sensitive cell, G in described imaging sensor _rphoto-sensitive cell, G _bphoto-sensitive cell and each self-corresponding average luminous intensity of B photo-sensitive cell difference are each other 0, and described identifying unit determines that the state of described infrared lamp is for opening.

According to the first or the second mode in the cards of the third aspect, in the third mode in the cards, described energy spectrometer module also comprises: white point selected cell;

Before described channel selection unit determines the luminous intensity of each element in described photo-sensitive cell respectively according to described imaging data, also comprise:

Described white point selected cell carries out the selection of white point data in described imaging data;

Corresponding, described channel selection unit determines the luminous intensity of each element in described photo-sensitive cell respectively according to described imaging data, comprising:

Described channel selection unit determines the luminous intensity of each element in described photo-sensitive cell respectively according to described white point data.

According to the third mode in the cards of the third aspect, in the 4th kind of mode in the cards, described energy spectrometer module also comprises: amplitude filter unit;

Before described channel selection unit determines the luminous intensity of each element in described photo-sensitive cell respectively according to described white point data, also comprise:

Described amplitude filter unit carries out amplitude filtering to described white point data.

According to the 4th kind of mode in the cards of the third aspect, in the 5th kind of mode in the cards, described energy spectrometer module also comprises: region weight unit;

In the luminous intensity of described computation unit according to element each in described photo-sensitive cell, calculate R photo-sensitive cell and G in described often group photo-sensitive cell respectively _rthe ratio of photo-sensitive cell respective light intensities, B photo-sensitive cell and G in described often group photo-sensitive cell _bbefore the ratio of photo-sensitive cell respective light intensities, also comprise:

Described region weight unit configures different weights to the luminous intensity of each element in the described photo-sensitive cell corresponding to the described white point data in zones of different.

Fourth aspect, the embodiment of the present invention also provides a kind of infrared control method, comprising:

The light intensity statistical module of infrared control device adds up the average photosensitivity of described imaging sensor according to the imaging data that imaging sensor exports, and is sent to the glide filter module of described infrared control device;

Described glide filter module carries out glide filter to described average photosensitive intensity, and after described glide filter, be sent to window comparison module and the Intensity Analysis module of described infrared control device;

Described Intensity Analysis module, according to described average photosensitive intensity, is carried out photosensitive intensive analysis, is judged the state of infrared lamp, if described judged result is for opening, output feedack information is to described window comparison module;

Described window comparison module, according to described average photosensitive intensity and described feedback information, outputs control signals to the control module of described infrared control device;

Described control module controls according to the state of described control signal to infrared fileter.

According to fourth aspect, in the first mode in the cards of fourth aspect, described Intensity Analysis module comprises: sample processing unit, identifying unit;

Described Intensity Analysis module, according to described average photosensitive intensity, is carried out photosensitive intensive analysis, is judged the state of infrared lamp, if described judged result is for opening, output feedack information, to described window comparison module, comprising:

Described sample processing unit is sampled in Preset Time to described average photosensitive intensity, obtains the change amplitude of described average photosensitive intensity;

Described change amplitude and default amplitude compare by described identifying unit, judge the state of described infrared lamp according to described comparative result; If described change amplitude, for opening, is sent to described window comparison module as described feedback information by described infrared lamp;

Corresponding, described window comparison module, according to described average photosensitive intensity and described feedback information, controls signal to the control module to described infrared control device, comprising described in output:

The difference of described average photosensitive intensity and described change amplitude as inputting data, compared with opening threshold value, closing threshold value, controls the state of described infrared fileter by described window comparison module.

According to the first mode in the cards of fourth aspect, in the second mode in the cards, described change amplitude and default amplitude compare by described identifying unit, judge the state of described infrared lamp, comprising according to described comparative result:

If described change amplitude is less than described default amplitude, then described identifying unit determines that described infrared lamp is for closing; If described change amplitude is more than or equal to described default amplitude, then described identifying unit determines that described infrared lamp is for opening.

5th aspect, the embodiment of the present invention also provides a kind of video camera, at least comprises: infrared fileter, imaging sensor and infrared control device; Wherein, described infrared fileter is connected with described imaging sensor, and is connected with described infrared control device respectively;

Described infrared control device is the arbitrary described infrared control device of the above-mentioned third aspect, or, the arbitrary described infrared control device of above-mentioned fourth aspect.

The infrared control device of the embodiment of the present invention, method and video camera, owing to judging the state of infrared lamp by energy spectrometer module or illumination analysis module, then by control unit, state control is carried out to red filter again, the unlatching due to infrared lamp can be avoided to cause the switching repeatedly of infrared fileter, thus ensure the stability of the imaging of video camera.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, introduce doing one to the accompanying drawing used required in embodiment or description of the prior art simply below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

The structural representation of the infrared control device that Fig. 1 provides for the embodiment of the present invention one;

The structural representation of the infrared control device that Fig. 2 provides for the embodiment of the present invention two;

The structural representation of the infrared control device that Fig. 3 provides for the embodiment of the present invention three;

The structural representation of the infrared control device that Fig. 4 provides for the embodiment of the present invention four;

The structural representation of the infrared control device that Fig. 5 provides for the embodiment of the present invention five;

The flow chart of the infrared control method that Fig. 6 provides for the embodiment of the present invention six;

The flow chart of the infrared control method that Fig. 7 provides for the embodiment of the present invention seven;

The structural representation of the video camera that Fig. 8 provides for the embodiment of the present invention eight.

Embodiment

For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

Embodiment one

The structural representation of the infrared control device that Fig. 1 provides for the embodiment of the present invention one.The infrared control device of the present embodiment is applicable to the video camera with infrared lamp and infrared fileter.Wherein, this video camera can be such as web camera (IP Camera is called for short IPC) or video monitoring equipment.As shown in Figure 1, the infrared control device 100 of the present embodiment comprises: light intensity statistical module 101, glide filter module 102, window comparison module 103, energy spectrometer module 104 and control module 105.Light intensity statistical module 101, glide filter module 102, window comparison module 103 and control module 105 connect successively.

Light intensity statistical module 101, is also connected with imaging sensor (sensor) 106, and the imaging data for exporting according to this imaging sensor 106 adds up the average photosensitive intensity of this imaging sensor 106, and is sent to glide filter module 102.

Particularly, this imaging sensor comprises at least one photo-sensitive cell, those photo-sensitive cells are specifically as follows charge coupled cell (Charge Coupled Device, be called for short CCD) or metal oxide semiconductor device (Complementary Metal-Oxide Semiconductor is called for short CMOS).

This imaging data refers to the data of undressed original image image, i.e. RAW image data.RGB energy spectrometer is carried out according to imaging data, actual is calculate according to imaging data the visible ray energy separately obtaining R, G, B tri-kinds of different wave lengths in incident ray respectively respectively, as luminous intensity, according to the visible ray energy size separately calculating R, G, B tri-kinds of different wave lengths obtained, judge whether have infrared light in incident ray, if so, then the infrared lamp of this camera is opening, if not, then the infrared lamp of this camera is closed condition.

Glide filter module 102, for carrying out glide filter to this average photosensitive intensity, and is sent to window comparison module 103.

This sliding block 102 pairs of light intensity statistical modules 101 obtain this average photosensitive intensity and carry out glide filter, the fluctuation of this average photosensitive intensity can be made more stable, thus make the control of infrared filter more stable, ensure the stability of imaging better.

Window comparison module 103, for according to this average photosensitive intensity with open compared with threshold value; If this average photosensitive intensity is greater than this and opens threshold value, export first and control signal to this control module 105.

Energy spectrometer module 104, is connected with this imaging sensor 106 and control module 105, for according to this imaging data, carries out RGB RGB energy spectrometer, judges the state of infrared lamp; If the state of this infrared lamp, for opening, sends the second control signal to this control module, if the state of this infrared lamp is for closing, send the 3rd control signal to this control module 105.

Control module 105, also be connected with infrared fileter 107, for controlling the state of this infrared fileter 107 according to this first control signal and this second control signal for closing, control the state of this infrared fileter according to this first control signal and the 3rd control signal for opening.

Mostly be in dark surrounds owing to opening infrared lamp, to improve the Infravision of video camera, the imaging effect namely in dark surrounds.Determine that infrared lamp is unlatching if judge, that is current external illumination is more weak, needs Infrared to carry out light filling, and without the need to by infrared fileter filtering infrared light, thus controls infrared fileter and maintain closed condition.Determine that infrared lamp is closedown if judge, that is, current external illumination has met imaging illumination requirement, and carries out light filling without the need to opening infrared lamp.

When this average photosensitive intensity be greater than this open threshold value time, export this first control information in order to open infrared fileter, so according to the 3rd control signal, infrared lamp is for opening, that is this average photosensitive intensity is the infrared light launched due to infrared lamp and increases, and thus needing to control this infrared fileter is closed condition.If according to the 3rd control signal, infrared lamp is for closing, and that is, this average photosensitive intensity current is not the infrared light launched of infrared lamp and increases, and thus needs to open infrared fileter filtering infrared to make image more clear.

The state controlling infrared fileter according to the 3rd control information switches, and the state that actual this infrared fileter of strength control according to current external illumination opens or cuts out switches.

Respectively the state of this infrared fileter is controlled according to this first control signal and this second control signal or the 3rd control signal, actually according to the opening of current external intensity of illumination and this infrared lamp, this infrared fileter to be controlled.Thus can avoid only according to incident intensity, namely exterior light directly connects and controls infrared fileter, and the infrared fileter caused switches repeatedly, and particularly in dark surrounds, and the imaging caused is unstable.

It should be noted that, the infrared control device that the present embodiment provides to have the integrated circuit of above-mentioned functions, can also be integrated in the entities such as processor by the software program with above-mentioned functions to realize.

The present embodiment scheme, the average photosensitive intensity of this imaging sensor and the state of infrared lamp can be determined, and according to the state of this average photosensitive intensity and this infrared lamp, state control is carried out to infrared fileter, the unlatching due to infrared lamp can be avoided to cause the switching repeatedly of infrared fileter, thus ensure the stability of the imaging of video camera.

Meanwhile, due to the infrared control device that the present embodiment provides, can make the mode of hardware and/or software, be integrated in this video camera, make this video camera without the need to infrared lamp control interface, and realize without the need to external detection circuit, hardware spending is little.

Embodiment two

The present embodiment also provides a kind of infrared control device.The structural representation of the infrared control device that Fig. 2 provides for the embodiment of the present invention two.On the basis of such scheme, as shown in Figure 2, energy spectrometer module 104 comprises: channel selection unit 201, computation unit 202 and identifying unit 203.Imaging sensor 106 comprises: at least one group of photo-sensitive cell; Often organize photo-sensitive cell to include: R photo-sensitive cell, Gr photo-sensitive cell, Gb photo-sensitive cell and B photo-sensitive cell.

The corresponding pixel of this group of photo-sensitive cell, and a pixel comprises 4 sensitivity specks.These 4 sensitivity specks are respectively the point corresponding to R photo-sensitive cell, Gr photo-sensitive cell, Gb photo-sensitive cell and B photo-sensitive cell.

Channel selection unit 201, is connected with imaging sensor 106 and computation unit 202, for determining the luminous intensity of each element in this photo-sensitive cell respectively according to this imaging data, and is sent to computation unit 202.

Computation unit 202, is connected with identifying unit 203, for the luminous intensity according to element each in this photo-sensitive cell, calculates this respectively and often organizes R photo-sensitive cell and G in photo-sensitive cell _rthe ratio of photo-sensitive cell respective light intensities, B photo-sensitive cell and G _bthe ratio of photo-sensitive cell respective light intensities, and be sent to described identifying unit;

According to the luminous intensity of element each in this photo-sensitive cell, be calculated to be R photo-sensitive cell, G in image-position sensor 106 respectively _rphoto-sensitive cell, G _bphoto-sensitive cell and each self-corresponding average luminous intensity of B photo-sensitive cell.

Particularly, R photo-sensitive cell and G _rthe ratio of photo-sensitive cell respective light intensities represents the impact of ruddiness on green glow, by R/G _rrepresent, B photo-sensitive cell and G _bthe ratio of photo-sensitive cell respective light intensities represents the impact of blue light light on green glow, by B/G _brepresent.

The corresponding separately average luminous intensity of photo-sensitive cell is actual refers to the mean value of the luminous intensity of R photo-sensitive cells all in this imaging sensor, all G _rthe mean value of photo-sensitive cell luminous intensity, all G _bthe mean value of photo-sensitive cell luminous intensity and the mean value of all B photo-sensitive cell luminous intensities.

Identifying unit 203, is also connected with control module 105, for often organizing R photo-sensitive cell and G in photo-sensitive cell according to this _rthe ratio of photo-sensitive cell respective light intensities, B photo-sensitive cell and G _br photo-sensitive cell, G in the ratio of photo-sensitive cell respective light intensities and this imaging sensor 106 _rphoto-sensitive cell, G _bphoto-sensitive cell and each self-corresponding average luminous intensity of B photo-sensitive cell carry out energy spectrometer, judge the state of this infrared lamp.

Preferably, identifying unit 203, if also often organize R photo-sensitive cell and G in photo-sensitive cell for this _rthe ratio of photo-sensitive cell respective light intensities, this often organizes B photo-sensitive cell and G in photo-sensitive cell _bthe ratio of photo-sensitive cell respective light intensities and the absolute difference of 1 are 0, and R photo-sensitive cell, G in this imaging sensor _rphoto-sensitive cell, G _bphoto-sensitive cell and each self-corresponding average luminous intensity of B photo-sensitive cell difference are each other 0, then determine that the state of this infrared lamp is for opening.

It should be noted that, " difference is 0 " in the present embodiment is not definitely 0, also can be approximate 0.In dark surrounds, the intensity of natural daylight is more weak, and the luminous intensity that imaging sensor is responded to mostly is this infrared lamp and opens the Infrared of launching, and for infrared red line, those different photo-sensitive cells all can sense.That is, the luminous intensity that those different photo-sensitive cells sense separately is similar, therefore R, G _r, B, G _brespective average luminous intensity is close, and namely its difference is each other 0.R/G _rwith B/G _balso the luminous intensity sensed separately due to those different photo-sensitive cells is similar, all close to 1, therefore itself and 1 difference be also 0.

The scheme of the present embodiment can on the basis of above-described embodiment, especially by channel selection unit, computation unit and identifying unit, the luminous intensity of photo-sensitive cell each in imaging sensor is analyzed, judge whether infrared lamp has unlatching, its infrared lamp decision scheme is more accurate, what more ensure controls infrared fileter, then ensures the stability of imaging.

Embodiment three

The present embodiment also provides a kind of infrared control device.The structural representation of the infrared control device that Fig. 3 provides for the embodiment of the present invention three.As shown in Figure 3, wherein energy spectrometer module 104 also comprises white point selected cell 301.

Wherein this white point selected cell 301, is connected with imaging sensor 106 and channel selection unit 201, for carrying out the selection of white point data in this imaging data, and these white point data selected is sent to this channel selection unit 201.

Channel selection unit 201, also for determining the luminous intensity of each element in this at least one group of photo-sensitive cell respectively according to these white point data.

Particularly, these white point data can be the data meeting white balance in this imaging data.It should be noted that, white point data in the present embodiment nisi white point data, that is, the assorted luminous intensity of R, G, B corresponding to it non-fully is equal, as long as its difference is each other in preset range.Determined the intensity of each element by the white point data selected, make the present embodiment while the stability ensureing image, also ensure image no color differnece.

Further, in such scheme, this energy spectrometer module 104 also comprises: amplitude filter unit 302.This amplitude filter unit 302 is between white point selected cell 301 and channel selection unit 201, before determining the luminous intensity of each element in this sensitive piece in channel selection unit 201 respectively according to these white point data, amplitude filtering is carried out to these white point data, thus carries out selected to these white point data.

In scheme described above, described in this, energy spectrometer module 104 also comprises: region weight unit 303;

Region weight unit 303, is connected with computation unit 202, in the luminous intensity of computation unit 202 according to element each in this photo-sensitive cell, calculates respectively and often organizes R photo-sensitive cell and G in photo-sensitive cell _rthe ratio of photo-sensitive cell respective light intensities, often organizes B photo-sensitive cell and G in photo-sensitive cell _bbefore the ratio of photo-sensitive cell respective light intensities, the weight corresponding to the luminous intensity configuration of each element in this photo-sensitive cell determined respectively according to these white point data in zones of different.

Due in zones of different, the difference of photo-sensitive cell photoperceptivity corresponding in imaging sensor, make different incident intensity may produce identical imaging data, thus different to each arrangements of components of the photo-sensitive cell in zones of different weights, to obtain by ranking operation the luminous intensity that each element is corresponding more accurately.

The present embodiment scheme, on the basis of such scheme, after also carrying out white point selection by white point selected cell, for white point data analysis, also can ensure image no color differnece; Region power unit makes to calculate and obtains luminous intensity corresponding to each element more accurately, thus better ensures the stability of image.

Embodiment four

The present embodiment also provides a kind of infrared control device.The structural representation of the infrared control device that Fig. 4 provides for the embodiment of the present invention four.As shown in Figure 4, this infrared control device 400 comprises: light intensity statistical module 401, glide filter module 402, Intensity Analysis module 403, window comparison module 404, control module 405.Light intensity statistical module 401, glide filter module 402, window comparison module 404 and control module 405 connect successively.

Light intensity statistical module 401, is connected with imaging sensor 406, and the imaging data for exporting according to this imaging sensor 406 adds up the average photosensitive intensity of this imaging sensor 406, and is sent to glide filter module 402.

Glide filter module 402, for carrying out glide filter to this average photosensitive intensity, and is sent to window comparison module 404 and Intensity Analysis module 403.

Intensity Analysis module 403, is connected with imaging sensor 406 and window comparison module 404, for according to this average photosensitive intensity, carry out photosensitive intensive analysis, judge the state of infrared lamp, if this judged result is for opening, output feedack information is to this window comparison module 404.

Window comparison module 404, for according to this average photosensitive intensity and this feedback information, outputs control signals to this control module 405.

This control module 405, is also connected with infrared fileter 407, for controlling according to the state of this control signal to infrared fileter 407.

Particularly, the average photosensitive intensity according to imaging sensor carries out photosensitive intensive analysis, monitors the change of this photosensitive intensity.If photosensitive Strength Changes is comparatively large, then can think what the unlatching of infrared lamp caused, corresponding, if photosensitive Strength Changes is less, belong to the normal light intensities fluctuation of natural daylight, thus this infrared lamp is for closing.The feedback information that this Intensity Analysis module exports is to window comparison module, to make window comparison module compensate this average photosensitive intensity according to this feedback information, thus the state making this window comparison module and control module carry out infrared fileter according to the photosensitive intensity after compensation controls.This feedback information can be such as the fluctuation amplitude of luminous intensity, compensates imaging data according to this feedback information, can be to reduce in this imaging data owing to opening the luminous intensity that infrared lamp increases.The state that this window comparison module and control module carry out infrared fileter according to the imaging data after compensation controls, and owing to reducing the impact of infrared lamp, avoids the switching repeatedly of infrared fileter, thus ensures the stability of imaging.

The present embodiment scheme, the state of infrared lamp can be judged according to photosensitive intensive analysis by Intensity Analysis module, if and this infrared lamp for open time, by feedback information, window comparison module is compensated to imaging data, thus by control module, infrared fileter is controlled, the impact of infrared lamp can be reduced, avoid the switching repeatedly of infrared fileter, thus ensure the stability of imaging.

Embodiment five

The present embodiment also provides a kind of infrared control device.The structural representation of the infrared control device that Fig. 5 provides for the embodiment of the present invention five.As shown in Figure 5, in the program, Intensity Analysis module 403 comprises: sample processing unit 501, identifying unit 502.

This sample processing unit 501, is connected with glide filter module 402 and identifying unit 502, for this average photosensitive intensity being sampled in Preset Time, obtains the change amplitude of this average photosensitive intensity.

Identifying unit 502, is connected with window comparison module 404, for this change amplitude and default amplitude being compared, judges the state of this infrared lamp according to this comparative result; If this change amplitude, for opening, is sent to window comparison module 404 as this feedback information by this infrared lamp.

Corresponding, window comparison module 404, also for using the difference of this average photosensitive intensity and this change amplitude as inputting data, compared with opening threshold value, closing threshold value, the state of this infrared fileter 407 is controlled.

Preferably, this identifying unit 502, if be also less than this default amplitude for this change amplitude, then determines that this infrared lamp is for closing; If this change amplitude is more than or equal to this default amplitude, then determine that this infrared lamp is for opening.

This predetermined threshold value specifically can with to open threshold value identical.Usually open threshold value and be greater than closedown threshold value.

The present embodiment, by the change amplitude of this average photosensitivity of acquisition accessed by sample processing unit, more accurately, thus ensures the stability of imaging better.

Embodiment six

The present embodiment provides a kind of infrared control method.The method can be performed by infrared control device.The flow chart of the infrared control method that Fig. 6 provides for the embodiment of the present invention six.As shown in Figure 6, the method, specifically comprises as follows:

The light intensity statistical module of step 601, infrared control device adds up the average photosensitive intensity of this imaging sensor according to the imaging data that imaging sensor exports, be sent to the glide filter module of this infrared control device.

Step 602, this glide filter module carry out glide filter to this average photosensitive intensity, are sent to the window comparison module of this infrared control device after this glide filter.

Step 603, this window comparison module according to this average photosensitive intensity with open compared with threshold value; If open threshold value described in this average photosensitive intensity is greater than, export the control module that first controls signal to this infrared control device.

The energy spectrometer module of step 604, this infrared control device, according to this imaging data, is carried out RGB RGB energy spectrometer, is judged the state of infrared lamp.

If the state of this infrared lamp of step 605 is for opening, this energy spectrometer module sends the second control signal to this control module; Or if the state of this infrared lamp is for closing, this energy spectrometer module sends the 3rd control signal to this control module.

Step 606, this control module control the state of infrared fileter for closing according to this first control information and this second control signal; The state of this infrared fileter is controlled for opening according to this first control signal and the 3rd control signal.

Further, in such scheme, this energy spectrometer module comprises: channel selection unit, computation unit and identifying unit; This imaging sensor comprises: photo-sensitive cell; Often organize photo-sensitive cell to include: R photo-sensitive cell, Gr photo-sensitive cell, Gb photo-sensitive cell and B photo-sensitive cell.

In such scheme, in step 601, the energy spectrometer module of this infrared control device, according to this imaging data, is carried out RGB RGB energy spectrometer, is judged the state of infrared lamp, specifically comprise:

This channel selection unit determines the luminous intensity of each element in this photo-sensitive cell respectively according to this imaging data;

This computation unit, according to the luminous intensity of element each in this photo-sensitive cell, calculates this respectively and often organizes R photo-sensitive cell and G in photo-sensitive cell _rthe ratio of photo-sensitive cell respective light intensities, B photo-sensitive cell and G _bthe ratio of photo-sensitive cell respective light intensities; According to the luminous intensity of element each in this photo-sensitive cell, calculate R photo-sensitive cell, G in this imaging sensor respectively _rphoto-sensitive cell, G _bphoto-sensitive cell and each self-corresponding average luminous intensity of B photo-sensitive cell;

This identifying unit often organizes R photo-sensitive cell and G in photo-sensitive cell according to this _rthe ratio of photo-sensitive cell respective light intensities, B photo-sensitive cell and G _br photo-sensitive cell, G in the ratio of photo-sensitive cell respective light intensities and this imaging sensor _rphoto-sensitive cell, G _bphoto-sensitive cell and each self-corresponding average luminous intensity of B photo-sensitive cell carry out energy spectrometer, judge the state of this infrared lamp.

Further, in such scheme, this identifying unit often organizes R photo-sensitive cell and G in photo-sensitive cell according to this _rthe ratio of photo-sensitive cell respective light intensities, B photo-sensitive cell and G _br photo-sensitive cell, G in the ratio of photo-sensitive cell respective light intensities and this imaging sensor _rphoto-sensitive cell, G _bphoto-sensitive cell and each self-corresponding average luminous intensity of B photo-sensitive cell carry out energy spectrometer, judge the state of this infrared lamp, specifically comprise:

If this often organizes R photo-sensitive cell and G in photo-sensitive cell _rthe ratio of photo-sensitive cell respective light intensities, this often organizes B photo-sensitive cell and G in photo-sensitive cell _bthe ratio of photo-sensitive cell respective light intensities and the difference of 1 are 0, and R photo-sensitive cell, G in this imaging sensor _rphoto-sensitive cell, G _bphoto-sensitive cell and each self-corresponding average luminous intensity of B photo-sensitive cell difference are each other 0, and this identifying unit determines that the state of this infrared lamp is for opening.

Preferably, in such scheme, capability analysis module also comprises: white point selected cell.As above, this channel selection unit also comprises before determining the luminous intensity of each element in this photo-sensitive cell respectively according to this imaging data:

This white point selected cell carries out the selection of white point data in this imaging data.

Corresponding, this channel selection unit determines the luminous intensity of each element in this photo-sensitive cell respectively according to this imaging data, specifically comprises:

This channel selection unit determines the luminous intensity of each element in this photo-sensitive cell respectively according to these white point data.

Further, in scheme described above, energy spectrometer module also comprises: amplitude filter unit.Above-mentioned, channel selection unit also comprises before determining the luminous intensity of each element in this photo-sensitive cell respectively according to these white point data:

This amplitude filter unit carries out amplitude filtering to these white point data.

On the basis of such scheme, energy spectrometer module also comprises: region weight unit.In this computation unit as above according to the luminous intensity of element each in this photo-sensitive cell, calculate this respectively and often organize R photo-sensitive cell and G in photo-sensitive cell _rthe ratio of photo-sensitive cell respective light intensities, this often organizes B photo-sensitive cell and G in photo-sensitive cell _bbefore the ratio of photo-sensitive cell respective light intensities, also comprise:

This region weight unit configures different weights to the luminous intensity of each element in this photo-sensitive cell corresponding to these white point data in zones of different.

The present embodiment scheme can have the arbitrary described infrared control device of above-described embodiment one to embodiment three to perform, and its concrete implementation procedure and explanation illustrate similar to the above embodiments, do not repeat them here.

Embodiment seven

The present embodiment also provides a kind of infrared control method.The method is performed by infrared control device.The flow chart of the infrared control method that Fig. 7 provides for the embodiment of the present invention seven.As shown in Figure 7, the method, specifically comprises as follows:

The light intensity statistical module of step 701, infrared control device adds up the average photosensitivity of this imaging sensor according to the imaging data that imaging sensor exports, and is sent to the glide filter module of this infrared control device.

Step 702, this glide filter module carry out glide filter to this average photosensitive intensity, and after this glide filter, be sent to window comparison module and the Intensity Analysis module of this infrared control device.

Step 703, this Intensity Analysis module, according to this average photosensitive intensity, are carried out photosensitive intensive analysis, are judged the state of infrared lamp, if this judged result is for opening, output feedack information is to this window comparison module.

Step 704, this window comparison module, according to this average photosensitive intensity and this feedback information, output control signals to the control module of this infrared control device.

Step 705, this control module control according to the state of this control signal to infrared fileter.

Further, in scheme described above, this Intensity Analysis module comprises: sample processing unit, identifying unit.

In above-mentioned steps 703, this Intensity Analysis module is according to this average photosensitive intensity, carries out photosensitive intensive analysis, judges the state of infrared lamp, if this judged result is for opening, output feedack information, to this window comparison module, comprising:

This sample processing unit is sampled in Preset Time to this average photosensitive intensity, obtains the change amplitude of this average photosensitive intensity;

This change amplitude and default amplitude compare by this identifying unit, judge the state of this infrared lamp according to this comparative result; If this change amplitude, for opening, is sent to this window comparison module as this feedback information by this infrared lamp.

Corresponding, in above-mentioned steps 704, this window comparison module is according to this average photosensitivity and this feedback information, exports the control module that this controls signal to this infrared control device, comprising:

The difference of this average photosensitive intensity and this change amplitude as inputting data, compared with opening threshold value, closing threshold value, controls the state of this infrared fileter by this window comparison module.

On the basis of such scheme, wherein, this change amplitude and default amplitude compare by this identifying unit, judge the state of described infrared lamp, specifically comprise according to this comparative result:

If this change amplitude is less than this default amplitude, then this identifying unit determines that this infrared lamp is for closing; If this change amplitude is more than or equal to this default amplitude, then this identifying unit determines that this infrared lamp is for opening.

The present embodiment scheme can have arbitrary described infrared control device in above-described embodiment four or embodiment five to perform, and its concrete implementation procedure and explanation illustrate similar to the above embodiments, do not repeat them here.

Embodiment eight

The present embodiment also provides a kind of video camera.The structural representation of the video camera that Fig. 8 provides for the embodiment of the present invention eight.As shown in Figure 8, this video camera 800 at least comprises: infrared fileter 801, imaging sensor 802 and infrared control device 803.

Wherein, this infrared fileter 801 is connected with imaging sensor 802, and is connected with infrared control device 803 respectively.

This infrared control device 801 can be arbitrary described infrared control device in above-described embodiment one to embodiment three, can also be as the infrared control device as described in arbitrary in above-described embodiment four or five.

The video camera that the present embodiment provides, comprises the infrared control device that above-mentioned any embodiment provides, and its concrete beneficial effect is similar to the above embodiments, does not repeat them here.

One of ordinary skill in the art will appreciate that: all or part of step realizing above-mentioned each embodiment of the method can have been come by the hardware that program command is relevant.Aforesaid program can be stored in a computer read/write memory medium.This program, when performing, performs the step comprising above-mentioned each embodiment of the method; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.

Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.

Claims

1. an infrared control device, is characterized in that, comprising: light intensity statistical module, glide filter module, window comparison module, energy spectrometer module and control module; Described light intensity statistical module, described glide filter module, described window comparison module and described control module connect successively;

2. device according to claim 1, is characterized in that, described energy spectrometer module comprises: channel selection unit, computation unit and identifying unit; Described imaging sensor comprises: at least one group of photo-sensitive cell; Often organize photo-sensitive cell to include: R photo-sensitive cell, Gr photo-sensitive cell, Gb photo-sensitive cell and B photo-sensitive cell;

3. device according to claim 2, is characterized in that,

Described identifying unit, if also often organize R photo-sensitive cell and G in photo-sensitive cell for described _rb photo-sensitive cell and G in the ratio of photo-sensitive cell respective light intensities, described often group photo-sensitive cell _bthe ratio of photo-sensitive cell respective light intensities and the difference of 1 are 0, and R photo-sensitive cell, G in described imaging sensor _rphoto-sensitive cell, G _bphoto-sensitive cell and each self-corresponding average luminous intensity of B photo-sensitive cell difference are each other 0, then determine that the state of described infrared lamp is for opening.

4. the device according to Claims 2 or 3, is characterized in that, described energy spectrometer module also comprises: white point selected cell;

5. device according to claim 4, is characterized in that, described energy spectrometer module also comprises: amplitude filter unit;

6. device according to claim 5, is characterized in that, described energy spectrometer module also comprises: region weight unit;

7. an infrared control device, is characterized in that, comprising: light intensity statistical module, glide filter module, Intensity Analysis module, window comparison module, control module; Described light intensity statistical module, described glide filter module, described window comparison module and described control module connect successively;

8. device according to claim 7, is characterized in that, described Intensity Analysis module comprises: sample processing unit, identifying unit;

9. device according to claim 8, is characterized in that,

Described identifying unit, if be also less than described default amplitude for described change amplitude, then determines that described infrared lamp is for closing; If described change amplitude is more than or equal to described default amplitude, then determine that described infrared lamp is for opening.

10. an infrared control method, is characterized in that, comprising:

11. methods according to claim 10, is characterized in that, described energy spectrometer module comprises: channel selection unit, computation unit and identifying unit; Described imaging sensor comprises: photo-sensitive cell; Often organize photo-sensitive cell to include: R photo-sensitive cell, Gr photo-sensitive cell, Gb photo-sensitive cell and B photo-sensitive cell;

12. methods according to claim 11, is characterized in that, described identifying unit often organizes R photo-sensitive cell and G in photo-sensitive cell according to described _rthe ratio of photo-sensitive cell respective light intensities, B photo-sensitive cell and G _br photo-sensitive cell, G in the ratio of photo-sensitive cell respective light intensities and described imaging sensor _rphoto-sensitive cell, G _bphoto-sensitive cell and each self-corresponding average luminous intensity of B photo-sensitive cell carry out energy spectrometer, judge the state of described infrared lamp, comprising:

13. methods according to claim 11 or 12, it is characterized in that, described energy spectrometer module also comprises: white point selected cell;

14. methods according to claim 13, is characterized in that, described energy spectrometer module also comprises: amplitude filter unit;

15. methods according to claim 14, is characterized in that, described energy spectrometer module also comprises: region weight unit;

16. 1 kinds of infrared control methods, is characterized in that, comprising:

17. methods according to claim 16, is characterized in that, described Intensity Analysis module comprises: sample processing unit, identifying unit;

18. methods according to claim 17, is characterized in that, described change amplitude and default amplitude compare by described identifying unit, judge the state of described infrared lamp, comprising according to described comparative result:

19. 1 kinds of video cameras, is characterized in that, at least comprise: infrared fileter, imaging sensor and infrared control device; Wherein, described infrared fileter is connected with described imaging sensor, and is connected with described infrared control device respectively;

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