CN102846301A - Intelligent adjusting device of endoscope illumination - Google Patents

Abstract

The invention discloses an intelligent adjusting device of endoscope illumination. The device comprises a medical endoscope, an image acquisition card, a signal processor, a controller, a switching power supply module and a cold light source. Light emitted by the cold light source is sent to the medical endoscope which converts light signals into image signals and transmits the image signals to the signal processor through an image output interface and the image acquisition card; the signal processor receives and processes the image signals transmitted by the image acquisition card, performs color cast correction and image brightness correction on images acquired in real time by establishing classic color images and a color characteristic data bank of the color images, and transmits illumination output control instructions of the cold light source to the controller; and the controller changes switching control signal output phases according to the control instructions of the signal processor to enable direct voltage output by the switching power supply module to change correspondingly, so that the working voltage of the cold light source is changed, and the illumination output by the cold light source is optimized.

Description

The intelligent regulating device of endoscope's illumination

Technical field

What the present invention relates to is the device in a kind of medical apparatus and instruments automatic control technology field, specifically the intelligent regulating device of a kind of endoscope illumination.

Background technology

In recent years, the medical endoscope system is used widely in clinical medicine.Medical endoscope is a kind of miniature video camera system that photographic head can be put into human body, providing for oneself under the light source irradiation, by optical system with observed target imaging on the target surface of imageing sensor, change the signal of telecommunication into by optical signal, through amplify, image process after on display the enlarged image of clear display.Under the assistance of endoscopic system, the doctor can find the pathological changes that the soft or hard tissue occurs in the human body better, and can allow the patient understand intuitively, all sidedly the variety of issue that exists in the own health.These images can also be stored among patient's the data base by corresponding communication interface, jointly form electronic health record of new generation with information such as literal, figure, X ray pictures, can have access to easily and be used for the consultation of doctors, the occasions such as academic report are important feature of new medical model.

Although endoscope has demonstrated its important medical significance and effect clinically day by day as the medical apparatus and instruments of organ diagnosis and treatment in the human body,, the manufacturing process different according to endoscope, its technical performance but exists great difference.Wherein, provide suitable brightness by light guide bundles in order to reach diagnosis and the effect for the treatment of is the technology boundary that the doctor does one's utmost to pursue when carrying out clinical observation by cold light source, yet, also be the technical barrier that the current endoscope matched process technology not yet really solves.This is because the organ physiological condition is very complicated, changeable in the human body, as: just patient may exist hydrops, long-pending, pressure fluctuation, internal organs wriggling etc., cause observed focus to be in very complicated kinestate, the observed position often picture point of adopting of phase endoscope is in unsteady phenomena, in case the cold light source luminance shortage, focus may be smudgy at a distance, otherwise, phenomenons such as easily causing again by force floodlight reflection and diffraction is crossed in brightness, can affect equally the definition of image.Obtain good observing effect under the physiological environment condition of interior organ complexity, the intelligent automatic regulation technology of cold light source output illumination degree becomes one to the key technology of closing endoscope's clinical diagnosis accuracy.

Current comparatively popular method is the appropriateness compensation that is embodied as image sharpness by the built-in automatic gain of CCD, yet, these class methods do not have dimming function, add that CCD automatic gain control scope is little, gain adjustment module has been integrated on the built-in DSP module of CCD, can't make amendment or secondary development, the environment and condition that this has just limited clinical use dramatically also necessarily requires patient's height to cooperate.Obviously, the cold light source output illumination degree that is equipped with of the endoscope of current use does not possess the clinical result of use that intelligent regulatory function has seriously restricted endoscope.The present invention not only can improve existing endoscopic technique level to the utmost, and can effectively realize the intellectuality adjusting of endoscope's illumination.

Find by prior art documents, patent " micro endoscopy for oral cavity " (application number: 200810052271.6, not yet authorize) introduce " a kind of micro endoscopy for oral cavity; power supply is arranged; micro-imaging unit and lighting unit; and the corresponding imageing sensor that is arranged on the end of micro-imaging unit, the control unit and the monitor that link to each other with the outfan of imageing sensor respectively, power supply is connection layout image-position sensor and lighting unit respectively.The micro-imaging unit is comprised of as object lens with the input of imageing sensor first of reception target to be observed and is connected, received image is delivered to second of imageing sensor form as object lens, be arranged on the first composition and form as the transfer between the object lens as object lens and second.Lighting unit has the fibre-optical cold light source that links to each other with power supply, the coupled lens that links to each other with fibre-optical cold light source, an and end links to each other with coupled lens, the other end be used for the throwing light on illumination fiber optic bundle of target to be observed.The present invention can arbitrarily observe any details of tooth, also can carry out the Continuous Observation of different size details, has a heating low, and colour temperature is regulated in continuous operation, changes optical fiber and goes out the characteristics such as illuminance." still, this patent described " change optical fiber and go out illuminance " is by manual observation micro-image effect, changes " optical fiber goes out illuminance " by manual adjustment " colour temperature filter " again." control unit " described in the patented technology description also is only used for processing " when adopting reflecting mirror, because through the odd number secondary reflection, have the mirror image problem ".Therefore, there is larger technical deficiency in this technology in the adjusting of " optical fiber goes out illuminance ".

Find by prior art documents again, " design and the realization of oral cavity microcavity imaging system " of Liu Tao (2008, University Of Tianjin's Master of engineering academic dissertation) " observes the oral cavity microcavity imaging system of minor detail in the oral cavity for the actual needs design of odontologist's clinical diagnosis; carry out the development of stomatology endoscope instrument; mainly comprise the formulation of the General layout Plan of stomatology endoscope instrument; oral cavity microcavity imaging optical system design; Instrument Illumination system design; the parts such as experiment test of the Machine Design of product and model machine product ", wherein, design to illuminator has provided comparatively detailed scheme, and the illumination of oral endoscope system provides the system of selection of light source and optical fiber.But this paper does not relate to the optical fiber illumination regulation technology problem of endoscopic system all the time.

Summary of the invention

The object of the invention is to provides the intelligent regulating device of a kind of endoscope illumination for above-mentioned deficiency of the prior art, can carry out the output intensity that intelligent decision is optimized cold light source illumination to the image information that receives by signal processor.

The present invention is achieved by the following technical solutions, the present invention includes: medical endoscope, image pick-up card, signal processor, controller, switch power module, cold light source.The image output interface of medical endoscope is connected with the input interface of image pick-up card, the output interface of image pick-up card is connected with the input interface of signal processor, the output interface of signal processor is connected with the input interface of controller, the output interface of controller is connected with the control signal input interface of switch power module, the power input interface of switch power module is connected with the unidirectional current output interface, and the output interface of switch power module is connected with the input interface of cold light source.The illuminance that cold light source sends is injected medical endoscope, and medical endoscope is transformed into picture signal with optical signal, and sends picture signal to signal processor through image pick-up card by its image output interface; Signal processor receives the picture signal of image pick-up card transmission and processes, by setting up classical color image and color characterization data storehouse thereof, image to Real-time Collection carries out the colour cast correction, brightness of image is proofreaied and correct, and sends cold light source illumination output control instruction to controller; Controller is according to the signal processor control instruction that receives, change the switch controlling signal output phase, change so that the DC voltage of switch power module output produces accordingly, and then changed the running voltage of cold light source, so cold light source output illumination obtains to optimize adjusting.

Described medical endoscope consists of the electromechanical integration parts by cephalic par, bending section, main flexible tube, operating portion, miniature CCD, image output interface, leaded light plug.Cephalic par comprises: miniature convex lens object lens, image transmission optical fibre top, Optic transmission fiber end; Miniature convex lens object lens are arranged at the front end of cephalic par, are used for receiving the reflected light from body surface; Bending section is the stage casing mechanical connecting element of cephalic par and main flexible tube, and the rear end of cephalic par is connected with the front end of bending section, and the rear end of bending section is connected with the front end of main flexible tube, and the image transmission optical fibre rear end in the main flexible tube is connected with the input port of miniature CCD; Miniature CCD is miniature charge-coupled image sensor, during making at its input interface with miniature convex lens eyepiece and CCD integrated chip, be solidified togather; The output port of miniature CCD is connected with the image output interface; Main flexible tube is except parcel image transmission optical fibre and Optic transmission fiber, also comprise an adjusting endoscope head end and spy on the fine steel wire of angle, the front end of fine steel wire and the front end robot of cephalic par are fastening, the rear end of fine steel wire is connected with the adjusting knob of operating portion, along with the rotation of operating portion adjusting knob can change the length size of fine steel wire in main flexible tube, and then the curvature of change bending section, therefore can reach the variation that cephalic par is spied on angle; Optic transmission fiber rear end in the main flexible tube is connected with leaded light plug optical output port.From the light that cold light source sends, by leaded light plug light input end mouth the cold light source light beam is sent into Optic transmission fiber, through Optic transmission fiber with the cold light source beam Propagation to cephalic par throw light on observed object or visual field.For making whole visual field uniform-illumination, therefore the Optic transmission fiber illumination zone should not only require the diameter of Optic transmission fiber as far as possible little greater than the angle of visual field, and flexibility is good, and requires that higher numerical aperture is arranged, and just can reach the requirement that improves illuminance of viewing field.After the reflected light of observed object gets miniature convex lens object lens and converges through cephalic par, image on the end face of image transmission optical fibre, spread out of through image transmission optical fibre, after amplifying through miniature convex lens eyepiece again, project on the target surface of CCD and pass through opto-electronic conversion, optical signal is transformed into the image pixel sequence signal of telecommunication, by the image output interface picture signal is transferred to signal processor through image pick-up card.

Described signal processor comprises: input interface, signal processing module, DBM, output interface.The input interface input port receives the data image signal from image pick-up card output, and the input interface output port is connected with the input port of signal processing module; The output port of signal processing module is connected with the input port of output interface; DBM carries out data interaction as the memory modules of signal processor by data/address bus and signal processing module; The output port of output interface is connected with the input interface of controller.

Described DBM, its structure is made of the district, each the inner classical color image of district's storage human organ and color characterization data thereof, as: esophagus district storage oesophagoscope classical color image and color characterization data thereof, gastric area storage coat of the stomach endoscope's classical color image and color characterization data thereof, colon district storage node intestinal wall endoscope's classical color image and color characterization data thereof etc.Described color character comprises: three primary colours R(is red in the RGB color space), G(is green), B(is blue) pixel value R ₀(u, v), G ₀(u, v), B ₀(u, v) and matching ratio coefficient thereof, average

And three maximal and minmal value between the average.

R ₀(u, v), G ₀(u, v), B ₀(u, v) the classical image pixel value that is otherwise known as, its average is

$\left\{\begin{array}{c}{\stackrel{\‾}{R}}_0(u,v)=\frac{1}{m\×n}\underset{v=1}{\overset{m}{\mathrm{\Σ}}}\underset{u=1}{\overset{n}{\mathrm{\Σ}}}{R}_0(u,v)\\ {\stackrel{\‾}{G}}_0(u,v)=\frac{1}{m\×n}\underset{v=1}{\overset{m}{\mathrm{\Σ}}}\underset{u=1}{\overset{n}{\mathrm{\Σ}}}{G}_0(u,v)\\ {\stackrel{\‾}{B}}_0(u,v)=\frac{1}{m\×n}\underset{v=1}{\overset{m}{\mathrm{\Σ}}}\underset{u=1}{\overset{n}{\mathrm{\Σ}}}{B}_0(u,v)\end{array}\right.$ (formula one)

And comprehensive mean J ₀For

$J_0=\frac{1}{r+g+b}[r{\stackrel{\‾}{R}}_0(u,v)+g{\stackrel{\‾}{G}}_0(u,v)+b{\stackrel{\‾}{B}}_0(u,v)]$ (formula two)

Wherein, m, n are respectively the row, column number of image coordinate; R, g, b are respectively the matching ratio coefficient of three primary colours R, G, B.

Maximal and minmal value between three averages is

$\left\{\begin{array}{c}{I}_{0\max }(u,v)=\max [{\stackrel{\‾}{R}}_0(u,v),{\stackrel{\‾}{G}}_0(u,v),{\stackrel{\‾}{B}}_0(u,v)]\\ I_{0\min }(u,v)=\min [{\stackrel{\‾}{R}}_0(u,v),{\stackrel{\‾}{G}}_0(u,v),{\stackrel{\‾}{B}}_0(u,v)]\end{array}\right.$ (formula three)

Wherein, (u, v) is the pixel coordinate of image that endoscope collects, and u, v be row and the row-coordinate value of presentation video respectively.

I _0max(u, v), I _0min(u, v) is hereinafter referred to as again maximum, the minimum brightness output of classic map picture.

Described signal processing module is processed the picture signal that receives, obtain at first respectively the R of RGB real-time color image, G, B three primary colours pixel value and average thereof, then the image of Real-time Collection carried out the colour cast correction, choose again the maximal and minmal value in the three primary colours pixel value after colour cast is proofreaied and correct, carrying out brightness of image proofreaies and correct, then ask for image pixel average and comprehensive mean thereof after brightness of image is proofreaied and correct, by the size of classical image pixel comprehensive mean among the image pixel comprehensive mean behind the movement images gamma correction and the data base, regulate the most at last the control instruction of cold light source illumination and export to controller.

Compared with prior art, the present invention has following beneficial effect:

1. so that endoscope's clinical manipulation is very easy, the clinician can seek absorbedly and observe focus, needn't take great energy, require great effort for regulating illumination; 2. no matter how crooked endoscope is, and its illumination can realize the intelligence adjusting and reach effect of optimization.Therefore, the present invention can save time to save trouble, improve a new technique of medical diagnosis effect and efficient.

Description of drawings

Fig. 1 is system structure schematic diagram of the present invention;

Fig. 2 is the structured flowchart of signal processor among the present invention.

The specific embodiment

Below in conjunction with accompanying drawing embodiments of the invention are elaborated: the present embodiment is implemented under take technical solution of the present invention as prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.

As shown in Figure 1, the present embodiment comprises: medical endoscope 1, image pick-up card 2, signal processor 3, controller 4, switch power module 5, cold light source 6.The image output interface of medical endoscope 1 is connected with the input interface of image pick-up card 2, the output interface of image pick-up card 2 is connected with the input interface of signal processor 3, the output interface of signal processor 3 is connected with the input interface of controller 4, the output interface of controller 4 is connected with the control signal input interface of switch power module 5, the power input interface of switch power module 5 is connected with 12V unidirectional current output interface, and the output interface of switch power module 5 is connected with the input interface of cold light source 6.From the light that cold light source 6 sends, by leaded light plug light input end mouth cold light source 6 light beams are sent into Optic transmission fiber, through Optic transmission fiber with cold light source 6 beam Propagation to cephalic par throw light on observed object or visual field.

Described medical endoscope, adopting specifications and models is the endoscope of 0 °/φ 4 * 170(mm), and namely the object lens plane of cephalic par is parallel with the bending section section, and the angle of cut is 0 ° in other words, external diameter is 4mm, and hose length (being the overall length of bending section and main flexible tube) is 170mm.After the reflected light of observed body gets miniature convex lens object lens and converges through cephalic par, image on the end face of image transmission optical fibre, spread out of through image transmission optical fibre, after amplifying through miniature convex lens eyepiece again, project on the target surface of CCD and pass through opto-electronic conversion, optical signal is transformed into the image pixel sequence signal of telecommunication, by the image output interface picture signal is transferred to signal processor 3 through image pick-up card 2.

As shown in Figure 2, described signal processor 3 comprises: input interface 31, signal processing module 32, DBM 33, output interface 34.Input interface 31 input ports receive the data image signal from image pick-up card 2 outputs, and input interface 31 output ports are connected with the input port of signal processing module 32; The output port of signal processing module 32 is connected with the input port of output interface 34; DBM 33 carries out data interaction as the memory modules of signal processor 3 by data/address bus and signal processing module 32; The output port of output interface 34 is connected with the input interface of controller 4.

Described DBM 33, its structure is made of the district, each the inner classical color image of district's storage human organ and color characterization data thereof.Described classic map picture, the color and the inner coloured image of all good human organs of definition that are namely obtained by the endoscopic images sensor, be referred to as the inner classical color image of human organ, be called for short the classic map picture, as: esophagus district storage oesophagoscope classical color image and color characterization data thereof, gastric area storage coat of the stomach endoscope's classical color image and color characterization data thereof, colon district storage node intestinal wall endoscope's classical color image and color characterization data thereof etc.Described color character comprises: three primary colours R(is red in the RGB color space), G(is green), B(is blue) pixel value R ₀(u, v), G ₀(u, v), B ₀(u, v) and matching ratio coefficient thereof, average

And three maximal and minmal value between the average.

R ₀(u, v), G ₀(u, v), B ₀(u, v) the classical image pixel value that is otherwise known as, its average is

$\left\{\begin{array}{c}{\stackrel{\‾}{R}}_0(u,v)=\frac{1}{m\×n}\underset{v=1}{\overset{m}{\mathrm{\Σ}}}\underset{u=1}{\overset{n}{\mathrm{\Σ}}}{R}_0(u,v)\\ {\stackrel{\‾}{G}}_0(u,v)=\frac{1}{m\×n}\underset{v=1}{\overset{m}{\mathrm{\Σ}}}\underset{u=1}{\overset{n}{\mathrm{\Σ}}}{G}_0(u,v)\\ {\stackrel{\‾}{B}}_0(u,v)=\frac{1}{m\×n}\underset{v=1}{\overset{m}{\mathrm{\Σ}}}\underset{u=1}{\overset{n}{\mathrm{\Σ}}}{B}_0(u,v)\end{array}\right.$

And comprehensive mean J ₀For

$J_0=\frac{1}{r+g+b}[r{\stackrel{\‾}{R}}_0(u,v)+g{\stackrel{\‾}{G}}_0(u,v)+b{\stackrel{\‾}{B}}_0(u,v)]$

Wherein, m, n are respectively the row, column number of image coordinate; R, g, b are respectively the matching ratio coefficient of three primary colours R, G, B.

Maximal and minmal value between three averages is

$\left\{\begin{array}{c}{I}_{0\max }(u,v)=\max [{\stackrel{\‾}{R}}_0(u,v),{\stackrel{\‾}{G}}_0(u,v),{\stackrel{\‾}{B}}_0(u,v)]\\ I_{0\min }(u,v)=\min [{\stackrel{\‾}{R}}_0(u,v),{\stackrel{\‾}{G}}_0(u,v),{\stackrel{\‾}{B}}_0(u,v)]\end{array}\right.$

Wherein, (u, v) is the pixel coordinate of image that endoscope collects, and u, v be row and the row-coordinate value of presentation video respectively.

I _0max(u, v), I _0min(u, v) is hereinafter referred to as again maximum, the minimum brightness output of classic map picture.

32 pairs of picture signals that receive of described signal processing module are processed, obtain at first respectively the R of RGB real-time color image, G, B three primary colours pixel value and average thereof, then the image of Real-time Collection carried out the colour cast correction, choose again the maximal and minmal value in the three primary colours pixel value after colour cast is proofreaied and correct, carrying out brightness of image proofreaies and correct, then ask for image pixel average and comprehensive mean thereof after brightness of image is proofreaied and correct, by the size of classical image pixel comprehensive mean among the image pixel comprehensive mean behind the movement images gamma correction and the data base, finally regulate the output of cold light source illumination.Concrete detailed implementation procedure is as follows:

(1), according to the real-time color image of endoscopic images sensor output, obtain respectively R, G, the B three primary colours pixel value R of RGB coloured image ₁(u, v), G ₁(u, v), B ₁(u, v), and ask for whole image three primary colours pixel average Namely

$\left\{\begin{array}{c}{\stackrel{\‾}{R}}_1(u,v)=\frac{1}{m\×n}\underset{v=1}{\overset{m}{\mathrm{\Σ}}}\underset{u=1}{\overset{n}{\mathrm{\Σ}}}{R}_1(u,v)\\ {\stackrel{\‾}{G}}_1(u,v)=\frac{1}{m\×n}\underset{v=1}{\overset{m}{\mathrm{\Σ}}}\underset{u=1}{\overset{n}{\mathrm{\Σ}}}{G}_1(u,v)\\ {\stackrel{\‾}{B}}_1(u,v)=\frac{1}{m\×n}\underset{v=1}{\overset{m}{\mathrm{\Σ}}}\underset{u=1}{\overset{n}{\mathrm{\Σ}}}{B}_1(u,v)\end{array}\right.$

R ₁(u, v), G ₁(u, v), B ₁(u, v) the real time imaging three primary colours pixel value that is otherwise known as.

(2), the image of Real-time Collection is carried out colour cast proofread and correct, namely

$\left\{\begin{array}{c}{R}_2(u,v)=\frac{R_0(u,v)}{{\stackrel{\‾}{R}}_1(u,v)}{R}_1(u,v)\\ G_2(u,v)=\frac{G_0(u,v)}{{\stackrel{\‾}{G}}_1(u,v)}{G}_1(u,v)\\ B_2(u,v)=\frac{B_0(u,v)}{{\stackrel{\‾}{B}}_1(u,v)}{B}_1(u,v)\end{array}\right.$

R ₂(u, v), G ₂(u, v), B ₂(u, v) is called as the three primary colours pixel value after colour cast is proofreaied and correct.

(3), choose the maximal and minmal value in the three primary colours pixel average after colour cast is proofreaied and correct, namely

$\left\{\begin{array}{c}{\mathrm{<figure-callout\; id="2"\; label="I"\; filenames="HDA0000141028170000011.png"\; state="\{\{state\}\}">I</figure-callout>}}_{2\max }(u,v)=\max [{\stackrel{\&OverBar;}{R}}_2(u,v),{\stackrel{\&OverBar;}{G}}_2(u,v),{\stackrel{\&OverBar;}{B}}_2(u,v)]\\ I_{2\min }(u,v)=\min [{\stackrel{\&OverBar;}{R}}_2(u,v),{\stackrel{\&OverBar;}{G}}_2(u,v),{\stackrel{\&OverBar;}{B}}_2(u,v)]\end{array}\right.$

Wherein, the three primary colours pixel average after colour cast is proofreaied and correct is

$\left\{\begin{array}{c}{\stackrel{\&OverBar;}{R}}_2(u,v)=\frac{1}{m\&times;n}\underset{v=1}{\overset{m}{\mathrm{\&Sigma;}}}\underset{u=1}{\overset{n}{\mathrm{\&Sigma;}}}{R}_2(u,v)\\ {\stackrel{\&OverBar;}{G}}_2(u,v)=\frac{1}{m\&times;n}\underset{v=1}{\overset{m}{\mathrm{\&Sigma;}}}\underset{u=1}{\overset{n}{\mathrm{\&Sigma;}}}{G}_2(u,v)\\ {\stackrel{\&OverBar;}{B}}_2(u,v)=\frac{1}{m\&times;n}\underset{v=1}{\overset{m}{\mathrm{\&Sigma;}}}\underset{u=1}{\overset{n}{\mathrm{\&Sigma;}}}{B}_2(u,v)\end{array}\right.$

I _2max(u, v), I _2min(u, v) is hereinafter referred to as again colour cast and proofreaies and correct the maximum of rear image, minimum brightness output.

(4), brightness of image proofreaies and correct, namely

$\left\{\begin{array}{c}\stackrel{\&CenterDot;\&CenterDot;\&CenterDot;}{R}(u,v)=\sqrt{\frac{I_{0\max }^2-I_{0\min }^2}{({\mathrm{<figure-callout\; id="2"\; label="I"\; filenames="HDA0000141028170000011.png"\; state="\{\{state\}\}">I</figure-callout>}}_{2\max }-I_{2\min })I_{2\max }}}{R}_2(u,v)\\ \stackrel{\&CenterDot;\&CenterDot;\&CenterDot;}{G}(u,v)=\sqrt{\frac{I_{0\max }^2-I_{0\min }^2}{(I_{2\max }-I_{2\min })I_{2\max }}}{G}_2(u,v)\\ \stackrel{\&CenterDot;\&CenterDot;\&CenterDot;}{B}(u,v)=\sqrt{\frac{I_{0\max }^2-I_{0\min }^2}{({\mathrm{<figure-callout\; id="2"\; label="I"\; filenames="HDA0000141028170000011.png"\; state="\{\{state\}\}">I</figure-callout>}}_{2\max }-I_{2\min })I_{2\max }}}{B}_2(u,v)\end{array}\right.$

Be hereinafter referred to as the image pixel value behind the gamma correction.

(5), the image pixel average after asking for brightness of image and proofreading and correct Namely

$\left\{\begin{array}{c}\stackrel{\&OverBar;}{\stackrel{\&CenterDot;\&CenterDot;\&CenterDot;}{R}}(u,v)=\frac{1}{m\&times;n}\underset{v=1}{\overset{m}{\mathrm{\&Sigma;}}}\underset{u=1}{\overset{n}{\mathrm{\&Sigma;}}}\stackrel{\&CenterDot;\&CenterDot;\&CenterDot;}{R}(u,v)\\ \stackrel{\&OverBar;}{\stackrel{\&CenterDot;\&CenterDot;\&CenterDot;}{G}}(u,v)=\frac{1}{m\&times;n}\underset{v=1}{\overset{m}{\mathrm{\&Sigma;}}}\underset{u=1}{\overset{n}{\mathrm{\&Sigma;}}}\stackrel{\&CenterDot;\&CenterDot;\&CenterDot;}{G}(u,v)\\ \stackrel{\&OverBar;}{\stackrel{\&CenterDot;\&CenterDot;\&CenterDot;}{B}}(u,v)=\frac{1}{m\&times;n}\underset{v=1}{\overset{m}{\mathrm{\&Sigma;}}}\underset{u=1}{\overset{n}{\mathrm{\&Sigma;}}}\stackrel{\&CenterDot;\&CenterDot;\&CenterDot;}{B}(u,v)\end{array}\right.$

Asking for its comprehensive mean is J:

$J=\frac{1}{r+g+b}[r\stackrel{\&OverBar;}{\stackrel{\&CenterDot;\&CenterDot;\&CenterDot;}{R}}(u,v)+g\stackrel{\&OverBar;}{\stackrel{\&CenterDot;\&CenterDot;\&CenterDot;}{G}}(u,v)+b\stackrel{\&OverBar;}{\stackrel{\&CenterDot;\&CenterDot;\&CenterDot;}{B}}(u,v)]$

(6), compare J among J and the data base ₀Size, regulate the output of cold light source illumination.

Work as J-J ₀≠ 0 o'clock, to the cold light source sending controling instruction, regulate the output of cold light source illumination, concrete control method is as follows,

$\left\{\begin{array}{c}V(t+1)=V\left(t\right)-\frac{J-J_0}{K}\\ V_{\min }\&le;V(t+1)\&le;V_{\max }\end{array}\right.$

Wherein, V (t) is current time cold light source running voltage, and V (t+1) is next constantly cold light source running voltage, V _Max, V _MinBe respectively the specified the highest and minimum running voltage of cold light source.

Therefore realize all the time that at the whole medical procedure of endoscope the intelligence of its illumination regulates, so that can obtain the effect of optimization of illumination when observation and Computer Processing, analysis human internal organs image.

Described controller 4, according to signal processor 3 control instructions that receive, the forward position that changes its output switching signal goes out now, it is the switch controlling signal output phase, thereby so that the DC voltage of switch power module 5 outputs produces corresponding the variation, and then having changed the running voltage of cold light source 6, cold light source 6 output illumination obtain corresponding adjusting.

Described switch power module 5, the output voltage that is consisted of by the electronic power switch device controlled straight-head straight for the pass power circuit.Controller 4 can produce pulse control signal according to signal processor 3 control instructions, and this pulse control signal is transferred to switch power module 5 control signal inputs; Switch power module 5 just can carry out copped wave to wherein DC voltage input signal according to this pulse control signal, signal after copped wave has corresponding dutycycle, by filtering, smoothing effect wherein, just exported the direct voltage output of respective signal processor 3 control instructions.

Described cold light source, cold light source are the light sources that utilizes chemical energy, electric energy, bioenergy to excite, and have very good optics and become the sudden strain of a muscle characteristic.Because its luminance temperature is lower than ambient temperature, thus be called chemiluminescence, and claim this type of light source to be called cold light source.The principle of luminosity of cold light source is under electric field action, produces the electron collision excitation fluorescent material and produces luminescence phenomenon.The characteristics of cold light source are that other energy almost all is converted into visible light.Cold light source described in the present embodiment 6 adopts XD-300 series Medical endoscope cold light source.

In the present embodiment, the light that cold light source sends is sent into medical endoscope, and medical endoscope is transformed into picture signal with optical signal, and sends picture signal to signal processor through image pick-up card by its image output interface; Signal processor receives the picture signal of image pick-up card transmission and processes, by setting up classical color image and color characterization data storehouse thereof, image to Real-time Collection carries out the colour cast correction, brightness of image is proofreaied and correct, and sends cold light source illumination output control instruction to controller; Controller is according to the signal processor control instruction that receives, change the switch controlling signal output phase, so that the DC voltage of switch power module output produces corresponding the variation, and then has changed the running voltage of cold light source, cold light source output illumination obtains to optimize regulates.

The present invention can carry out the output intensity that intelligent decision is optimized cold light source illumination to the image information that receives by signal processor, realize the intelligence adjusting of endoscope's illumination: 1. endoscope's clinical manipulation is very easy, and the clinician needn't take great energy, require great effort for regulating illumination; 2. no matter how crooked endoscope is, and its illumination can realize that intelligence regulates and reach effect of optimization, and no matter manual observation or Computer Processing all can obtain high-quality, endoscopic images clearly.

Claims (8)

1. the intelligent regulating device of endoscope's illumination is characterized in that, comprising: medical endoscope, image pick-up card, signal processor, controller, switch power module and cold light source; The image output interface of medical endoscope is connected with the input interface of image pick-up card, the output interface of image pick-up card is connected with the input interface of signal processor, the output interface of signal processor is connected with the input interface of controller, the output interface of controller is connected with the control signal input interface of switch power module, the power input interface of switch power module is connected with the unidirectional current output interface, and the output interface of switch power module is connected with the input interface of cold light source; The illuminance that cold light source sends is injected medical endoscope, and medical endoscope is transformed into picture signal with optical signal, and sends picture signal to signal processor through image pick-up card by its image output interface; Signal processor receives the picture signal of image pick-up card transmission and processes, by setting up classical color image and color characterization data storehouse thereof, image to Real-time Collection carries out the colour cast correction, brightness of image is proofreaied and correct, and sends cold light source illumination output control instruction to controller; Controller is according to the signal processor control instruction that receives, change the switch controlling signal output phase, change so that the DC voltage of switch power module output produces accordingly, and then changed the running voltage of cold light source, so cold light source output illumination obtains to optimize adjusting.

2. the intelligent regulating device of endoscope according to claim 1 illumination is characterized in that, described signal processor comprises: input interface, signal processing module, DBM and output interface; Wherein: the input interface input port receives the data image signal from image pick-up card output, and the input interface output port is connected with the input port of signal processing module; The output port of signal processing module is connected with the input port of output interface; DBM carries out data interaction as the memory modules of signal processor by data/address bus and signal processing module; The output port of output interface is connected with the input interface of controller.

3. the intelligent regulating device of endoscope according to claim 2 illumination is characterized in that, described DBM, and its structure is made of the district, each the inner classical color image of district's storage human organ and color characterization data thereof; The inner classical color image of described human organ, the color and the inner coloured image of all good human organs of definition that are namely obtained by the endoscopic images sensor;

Described color character comprises: the pixel value R of RGB color space three primary colours R (red), G (green), B (indigo plant) ₀(u, v), G ₀(u, v), B ₀(u, v) and matching ratio coefficient thereof, average

And three maximal and minmal value between the average.

4. the intelligent regulating device of endoscope according to claim 2 illumination, it is characterized in that, described signal processing module is processed the picture signal that receives, obtain at first respectively the R of RGB real-time color image, G, B three primary colours pixel value and average thereof, then the image of Real-time Collection carried out the colour cast correction, choose again the maximal and minmal value in the three primary colours pixel value after colour cast is proofreaied and correct, carrying out brightness of image proofreaies and correct, then ask for image pixel average and comprehensive mean thereof after brightness of image is proofreaied and correct, by the size of classical image pixel comprehensive mean among the image pixel comprehensive mean behind the movement images gamma correction and the data base, the control instruction of regulating cold light source illumination is exported to controller.

5. the intelligent regulating device of endoscope according to claim 1 illumination is characterized in that, described medical endoscope is made of cephalic par, bending section, main flexible tube, operating portion, miniature CCD, image output interface, leaded light plug; Wherein cephalic par comprises miniature convex lens object lens, image transmission optical fibre top, Optic transmission fiber end, and miniature convex lens object lens are arranged at the front end of cephalic par, is used for receiving the reflected light from body surface; Bending section is the stage casing mechanical connecting element of cephalic par and main flexible tube, and the rear end of cephalic par is connected with the front end of bending section, and the rear end of bending section is connected with the front end of main flexible tube, and the image transmission optical fibre rear end in the main flexible tube is connected with the input port of miniature CCD; Miniature CCD is miniature charge-coupled image sensor, and the output port of miniature CCD is connected with the image output interface; Optic transmission fiber rear end in the main flexible tube is connected with leaded light plug optical output port.

6. the intelligent regulating device of endoscope according to claim 5 illumination, it is characterized in that, described leaded light plug light input end mouth is sent the cold light source light beam into Optic transmission fiber, through Optic transmission fiber with the cold light source beam Propagation to cephalic par throw light on observed object or visual field, after the reflected light of observed object gets miniature convex lens object lens and converges through cephalic par, image on the end face of image transmission optical fibre, spread out of through image transmission optical fibre, after amplifying through miniature convex lens eyepiece again, project on the target surface of CCD and pass through opto-electronic conversion, optical signal is transformed into the image pixel sequence signal of telecommunication, by the image output interface picture signal is transferred to signal processor through image pick-up card.

7. the intelligent regulating device of endoscope according to claim 5 illumination, it is characterized in that, described main flexible tube is except parcel image transmission optical fibre and Optic transmission fiber, also comprise an adjusting endoscope head end and spy on the fine steel wire of angle, the front end of fine steel wire and the front end robot of cephalic par are fastening, and the rear end of fine steel wire is connected with the adjusting knob of operating portion.

8. the intelligent regulating device of endoscope according to claim 1 illumination is characterized in that, described switch power module be the output voltage that consisted of by the electronic power switch device controlled straight-head straight for the pass power circuit.

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