CN111568352B - Endoscope system capable of automatically adjusting light source spectrum and spectrum adjusting method thereof - Google Patents
Endoscope system capable of automatically adjusting light source spectrum and spectrum adjusting method thereof Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 48
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- 230000007935 neutral effect Effects 0.000 claims description 22
- 238000012545 processing Methods 0.000 claims description 17
- 238000005286 illumination Methods 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 12
- 238000002834 transmittance Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 9
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- 230000009467 reduction Effects 0.000 abstract description 8
- 230000003595 spectral effect Effects 0.000 description 16
- 238000009877 rendering Methods 0.000 description 7
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/0638—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements providing two or more wavelengths
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
- A61B1/045—Control thereof
Abstract
The invention discloses an endoscope system with automatically-adjusted light source spectrum and a spectrum adjusting method thereof, which are used for controlling three light rays of red, green and blue to be emitted, synthesizing the three light rays into white light and then outputting and imaging; acquiring the proportion of image intensity values of red, green and blue channels of an image; comparing the obtained ratio of the image intensity values of the red, green and blue three channels with the set ratio of the image intensity values of the standard red, green and blue three channels, and adjusting the output power ratio of the red, green and blue three light rays until the calculated ratio of the image intensity values of the red, green and blue three channels is equal to the set ratio of the image intensity values of the standard red, green and blue three channels; according to the technical scheme, the luminous power proportion of the red, green and blue LEDs of the endoscope light source can be adjusted according to the image intensity value proportion of the red, green and blue channels of the acquired image, so that the optimal color reduction characteristic can be obtained when the endoscope system is matched with endoscope bodies, light guide beams and image sensors with different color characteristics.
Description
Technical Field
The invention relates to the field of endoscopes, in particular to an endoscope system capable of automatically adjusting light source spectrums and a spectrum adjusting method thereof.
Background
The resolution capability and the color reduction degree of the medical endoscope system on the color are important performance indexes of the medical endoscope system, and are important to the influence on clinical treatment as to whether normal tissues and pathological tissues can be correctly distinguished. If the color reproduction error of the endoscope system is large, the observation and operation of the tissue by a doctor can be influenced, so that misdiagnosis and even operation failure are caused.
In order to obtain good color resolution and color rendition, the main technical direction and product standard at present is to improve the color rendering of the endoscope illumination source. For example, in the medical endoscope cold light source standard YY 1081-2011, it is clearly specified that the medical cold light source color rendering index is not lower than 90.
However, the color rendering of the light source does not guarantee the color rendition of the medical endoscope system. The color reproducibility of an endoscope system is also subject to the spectral transmittance of the endoscope optical system; spectral transmittance of the guided light beam; spectral response curve of the image sensor; color rendering characteristics of the display, and the like.
At present, the main components of a set of medical endoscope camera system are as follows: the endoscope cold light source, the endoscope camera system, the light guide beam, the endoscope optical lens body and the display are often designed and produced by different manufacturers, and the technical parameters of different manufacturers and different models of products are different. In this case, improving the color rendering of the light source cannot ensure the color reproduction performance of the medical endoscope system.
For example, fig. 1 shows a spectral response curve of a medical endoscopic image sensor, where the sensor has a much lower sensitivity to red light than blue and green light. When such an image sensor is used, even if a light source having high color rendering property is used, good color reproducibility cannot be obtained because the image sensor has low sensitivity to red light. As shown in fig. 2, the spectral response curve of another image sensor for a medical endoscope is that, when the image sensor is used, even if a light source having high color rendering property is used, good color reproducibility cannot be obtained because the image sensor has low sensitivity to a blue light portion.
Accordingly, the prior art is still in need of improvement and development.
Disclosure of Invention
The invention aims to provide an endoscope system capable of automatically adjusting light source spectrum and a spectrum adjusting method thereof, wherein the light emitting spectrum of an endoscope light source is adjusted by detecting the color characteristic of the whole endoscope system, so that the optimal color reduction effect is obtained.
The technical scheme of the invention is as follows: the automatic light source spectrum regulating method includes the following steps:
s1: controlling to emit three kinds of light rays of red, green and blue, synthesizing the three kinds of light rays into white light, outputting and imaging;
s2: and acquiring the proportion of the image intensity values of the red, green and blue channels of the image.
S3: comparing the obtained ratio of the image intensity values of the red, green and blue three channels with the set ratio of the image intensity values of the standard red, green and blue three channels, and adjusting the output power ratio of the red, green and blue three light rays until the calculated ratio of the image intensity values of the red, green and blue three channels is equal to the set ratio of the image intensity values of the standard red, green and blue three channels.
In the method for automatically adjusting the light source spectrum, in the step S1, the red LED, the green LED and the blue LED are controlled to respectively emit three light rays of red, green and blue.
The automatic light source spectrum adjusting method is characterized in that the proportion of the image intensity values of the standard red, green and blue channels is preset according to the requirement and is recorded as follows: r is R 0 ：G 0 ：B 0 。
The method for automatically adjusting the spectrum of the light source, wherein the step S2 specifically comprises the following steps:
s21: dividing the image into three channels of red, green and blue;
s22: and acquiring the proportion of the image intensity values of the red, green and blue channels of the image.
The method for automatically adjusting the spectrum of the light source, wherein the step S3 specifically comprises the following steps:
s31: comparing the obtained image intensity value proportion of the red, green and blue three channels with the set image intensity value proportion of the standard red, green and blue three channels, if the two are equal, executing s32, and if the two are not equal, executing s33;
s32: ending the adjustment of the color reducibility of the image;
s33: s1 to S33 are re-executed.
An endoscope system for adjusting the color reduction effect of an endoscope image by adopting the light source spectrum automatic adjustment method according to any one of the above, wherein the endoscope system comprises a light source module control, a light emitting module, a beam combining light path, a light guide beam, an endoscope body, a neutral gray plate, an imaging lens, an image sensor and an image processing module; the light source module is controlled to be connected with the light emitting module, and the light emitting module comprises a red LED, a green LED and a blue LED; the image processing module is in communication connection with the light source control module;
the light source module controls the light emitting module to emit light, and red light, green light and blue light emitted by the red LED, the green LED and the blue LED are synthesized into white light illumination light through a beam combining light path and enter a light guide beam; the white light illumination light passes through the light guide beam and the endoscope body and then illuminates the neutral gray plate; the illumination light reflected on the neutral gray plate is collected by the endoscope body and imaged on the image sensor by the imaging lens; transmitting an image formed by the image sensor to an image processing module; the image sensor decomposes the image into three channels of red, green and blue, calculates the proportion of the image intensity values of the three channels of red, green and blue, and compares the calculated proportion of the image intensity values of the three channels of red, green and blue with the proportion of the image intensity values of the set standard three channels of red, green and blue; feeding back the calculation and judgment results of the image processing module to the light source control module; the light source control module adjusts the luminous power ratio of the three LEDs in the luminous module according to the calculation and judgment results until the calculated image intensity value ratio of the red, green and blue three channels is equal to the set image intensity value ratio of the standard red, green and blue three channels.
The endoscope system comprises an image processing module, a light source control module and a communication module, wherein the image processing module is in communication connection with the light source control module through the communication module.
The endoscope system, wherein, the luminous power of the red LED is set as P r The method comprises the steps of carrying out a first treatment on the surface of the The luminous power of the green LED is P g The method comprises the steps of carrying out a first treatment on the surface of the The luminous power of the blue LED is P b The method comprises the steps of carrying out a first treatment on the surface of the The transmittance of red light with the wavelength ranging from 610 nm to 660nm in a light guide beam, an endoscope body and an imaging lens is T respectively rf 、T re 、T rl The method comprises the steps of carrying out a first treatment on the surface of the The transmittance of green light with the wavelength of 510-560 nm in a light guide beam, an endoscope body and an imaging lens is respectively T gf 、T ge 、T gl The method comprises the steps of carrying out a first treatment on the surface of the The transmittance of red light with the wavelength of 430-480 nm in a light guide beam, an endoscope body and an imaging lens is T respectively bf 、T be 、T bl The method comprises the steps of carrying out a first treatment on the surface of the Setting the photoelectric conversion efficiency of red light with wavelength ranging from 610 nm to 660nm on an image sensor to be gamma r The method comprises the steps of carrying out a first treatment on the surface of the The photoelectric conversion efficiency of green light with the wavelength of 510-560 nm on the image sensor is Γ g The method comprises the steps of carrying out a first treatment on the surface of the The photoelectric conversion efficiency of blue light with the wavelength of 430-480 nm on the image sensor is Γ b The method comprises the steps of carrying out a first treatment on the surface of the When imaging the first neutral gray plate (16), the reflectivity of red light, green light and blue light is 1:1:1, a step of; the ratio of the output power of the red light, the green light and the blue light emitted from the red LED, the green LED and the blue LED in the light emitting module is P r ：P g ：P b After passing through the endoscope system, the ratio of the image intensity values of the red, green and blue channels of the finally formed image is as follows:
R：G：B=P r *T rf *T re *T rl *Γ r ：P g *T gf *T ge *T gl *Γ g ：P b *T bf *T be *T bl *Γ b 。
an endoscope system for adjusting the color reduction effect of an endoscope image by adopting the light source spectrum automatic adjustment method according to any one of the above, wherein the endoscope system comprises a light source module control, a light emitting module, a beam combining light path, a light guide beam, an endoscope body, a neutral gray plate, an imaging lens, an image sensor, a display and a color illuminometer; the light source module is controlled to be connected with the light emitting module, and the light emitting module comprises a red LED, a green LED and a blue LED; the display is connected with the color illuminometer;
the light source module controls the light emitting module to emit light, and red light, green light and blue light emitted by the red LED, the green LED and the blue LED are synthesized into white light illumination light through a beam combining light path and enter a light guide beam; the white light illumination light passes through the light guide beam and the endoscope body and then illuminates the neutral gray plate; the illumination light reflected on the neutral gray plate is collected by the endoscope body and imaged on the image sensor by the imaging lens; displaying an image formed by the image sensor on a display; the color illuminometer measures the spectral characteristics of the display image, calculates the ratio of the image intensity values of the red, green and blue spectral segments and the corresponding luminous power ratio of the red, green and blue spectral segments according to the spectral characteristics, and compares the calculated ratio of the image intensity values of the red, green and blue three channels with the set ratio of the image intensity values of the standard red, green and blue three channels; the comparison result and the calculated luminous power ratio of the corresponding red, green and blue three spectral bands are fed back to the light source control module; the light source control module adjusts the luminous power ratio of the three LEDs in the luminous module according to the feedback result until the calculated image intensity value ratio of the red, green and blue three channels is equal to the set image intensity value ratio of the standard red, green and blue three channels.
The endoscope system comprises a light source, a light source and a light source, wherein the wavelength of the red light LED is in the range of 610-660 nm; the wavelength of the green light LED is in the range of 510-560 nm; the wavelength of the blue light LED is within the range of 430-480 nm.
The invention has the beneficial effects that: the invention provides an endoscope system with automatically-adjusted light source spectrum and a spectrum adjusting method thereof, which are used for controlling three light rays of red, green and blue to be emitted, synthesizing the three light rays into white light and then outputting and imaging; acquiring the proportion of image intensity values of red, green and blue channels of an image; comparing the obtained ratio of the image intensity values of the red, green and blue three channels with the set ratio of the image intensity values of the standard red, green and blue three channels, and adjusting the output power ratio of the red, green and blue three light rays until the calculated ratio of the image intensity values of the red, green and blue three channels is equal to the set ratio of the image intensity values of the standard red, green and blue three channels; according to the technical scheme, the luminous power proportion of the red, green and blue LEDs of the endoscope light source can be adjusted according to the image intensity value proportion of the red, green and blue channels of the acquired image, so that the optimal color reduction characteristic can be obtained when the endoscope system is matched with endoscope bodies, light guide beams and image sensors with different color characteristics.
Drawings
Fig. 1 and 2 are spectral response curves of two image sensors in the prior art.
FIG. 3 is a flow chart showing the steps of the method for automatically adjusting the spectrum of a light source in the invention.
Fig. 4 is a schematic structural view of an endoscope system of embodiment 1 in the present invention.
Fig. 5 is a schematic view of the structure of an endoscope system according to embodiment 2 of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
As shown in fig. 3, a method for automatically adjusting a light source spectrum specifically includes the following steps:
s1: and controlling to emit three kinds of light rays of red, green and blue, synthesizing the three kinds of light rays into white light, outputting and imaging.
In some embodiments, the three red, green and blue light may be emitted by controlling the three red, green and blue LEDs.
S2: and acquiring the proportion of the image intensity values of the red, green and blue channels of the image.
S3: comparing the obtained ratio of the image intensity values of the red, green and blue three channels with the set ratio of the image intensity values of the standard red, green and blue three channels, and adjusting the output power ratio of the red, green and blue three light rays until the calculated ratio of the image intensity values of the red, green and blue three channels is equal to the set ratio of the image intensity values of the standard red, green and blue three channels.
In some embodiments, the ratio of the image intensity values of the standard red, green and blue three channels can be set as required in advance: r is R 0 ：G 0 ：B 0 。
In certain embodiments, the step S2 specifically includes the steps of:
s21: dividing the image into three channels of red, green and blue;
s22: and acquiring the proportion of the image intensity values of the red, green and blue channels of the image.
In certain embodiments, the step S3 specifically includes the following steps:
s31: comparing the obtained image intensity value proportion of the red, green and blue three channels with the set image intensity value proportion of the standard red, green and blue three channels, if the two are equal, executing s32, and if the two are not equal, executing s33;
s32: ending the adjustment of the color reducibility of the image;
s33: s1 to S33 are re-executed.
According to the technical scheme, the luminous power proportion of the red, green and blue LEDs of the endoscope light source can be adjusted according to the image intensity value proportion of the red, green and blue channels of the acquired image, so that the optimal color reduction characteristic can be obtained when the endoscope system is matched with endoscope bodies, light guide beams and image sensors with different color characteristics.
An endoscope system for adjusting the color reduction effect of an endoscope image by the automatic light source spectrum adjusting method can be realized by adopting the following embodiments:
example 1
As shown in fig. 4, the endoscope system includes a first light source module control 11, a first light emitting module 12, a first beam combining light path 13, a first light guide beam 14, a first endoscope body 15, a first neutral gray plate 16, a first imaging lens 17, a first image sensor 18, an image processing module 19, and a communication module 110; the first light source module control 11 is connected with the first light emitting module 12, and the first light emitting module 12 comprises a red LED, a green LED and a blue LED; the image processing module 19 is in communication connection with the light source control module 11 through the communication module 110;
the first light source module control 11 controls the first light emitting module 12 to emit light, and red light, green light and blue light emitted by the red LED, the green LED and the blue LED are synthesized into white light illumination light through the first beam combining light path 13 and enter the first light guide beam 14; the white light illumination light passes through the first light guide beam 14 and the first endoscope body 15 and then illuminates the first neutral gray plate 16; the illumination light reflected on the first neutral gray-scale plate 16 is collected by the first endoscope body 15 and imaged by the first imaging lens 17 onto the first image sensor 18; the image formed at the first image sensor 18 is transmitted to an image processing module 19; the image sensor 19 decomposes the image into three channels of red, green and blue, calculates the proportion of the image intensity values of the three channels of red, green and blue, and compares the calculated proportion of the image intensity values of the three channels of red, green and blue with the set proportion of the image intensity values of the three channels of standard red, green and blue; the communication module 110 feeds back the calculation and judgment results of the image processing module 19 to the light source control module 11; the light source control module 11 adjusts the light emitting power ratio of the three LEDs in the first light emitting module 12 according to the calculation and judgment results until the calculated ratio of the image intensity values of the red, green and blue channels is equal to the set ratio of the image intensity values of the standard red, green and blue channels.
In some embodiments, the wavelength of the red LED is in the range of 610-660 nm; the wavelength of the green light LED is in the range of 510-560 nm; the wavelength of the blue light LED is within the range of 430-480 nm.
When imaging the first neutral gray plate 16, in an ideal state, the gray value ratio of the red, green and blue three-channel images of the final image should be 1:1:1, i.e. imaging the first neutral gray plate 16, the ratio of the image intensity values of the red, green and blue three channels is: r is R 0 ：G 0 ：B 0 =1: 1: and 1, the color reducibility of the system reaches the optimal state. In actual use, a user can set the ratio R of the image intensity values of the standard red, green and blue three channels according to the actual conditions 0 ：G 0 ：B 0 To obtain the desired effect.
In some embodiments, assume that the red LED emits light at a power P r The method comprises the steps of carrying out a first treatment on the surface of the The luminous power of the green LED is P g The method comprises the steps of carrying out a first treatment on the surface of the The luminous power of the blue LED is P b . The transmittance of red light with the wavelength ranging from 610 nm to 660nm in the first light guide beam 14, the first endoscope body 15 and the first imaging lens 17 is T respectively rf 、T re 、T rl The method comprises the steps of carrying out a first treatment on the surface of the The transmittance of green light with the wavelength of 510-560 nm in the first guide beam 14, the first endoscope body 15 and the first imaging lens 17 is T gf 、T ge 、T gl The method comprises the steps of carrying out a first treatment on the surface of the The transmittance of red light with the wavelength of 430-480 nm in the first light guide beam 14, the first endoscope body 15 and the first imaging lens 17 is T respectively bf 、T be 、T bl . Assume that the photoelectric conversion efficiency of red light with wavelength ranging from 610 nm to 660nm on the first image sensor 18 is Γ r The method comprises the steps of carrying out a first treatment on the surface of the The photoelectric conversion efficiency of green light with the wavelength of 510-560 nm on the first image sensor 18 is Γ g The method comprises the steps of carrying out a first treatment on the surface of the The photoelectric conversion efficiency of blue light with the wavelength of 430-480 nm on the first image sensor 18 is Γ b . When imaging the first neutral gray plate 16, the reflectance of red, green and blue light is 1:1:1. the ratio of the output power of the red, green and blue light emitted from the red, green and blue LEDs in the light emitting module 2 is P r ：P g ：P b After passing through the endoscope system, the ratio of the image intensity values of the red, green and blue channels of the finally formed image is as follows:
R：G：B=P r *T rf *T re *T rl *Γ r ：P g *T gf *T ge *T gl *Γ g ：P b *T bf *T be *T bl *Γ b 。
example 2
As shown in fig. 5, the endoscope system includes a second light source module control 21, a second light emitting module 22, a second combined beam optical path 23, a second light guide beam 24, a second endoscope body 25, a second neutral gray plate 26, a second imaging lens 27, a second image sensor 28, a display 29, and a color illuminometer 210; the second light source module control 21 is connected with the second light emitting module 22, and the second light emitting module 22 comprises a red LED, a green LED and a blue LED; the display 29 is connected with a color illuminometer 210;
the second light source module control 21 controls the second light emitting module 22 to emit light, and red light, green light and blue light emitted by the red LED, the green LED and the blue LED are synthesized into white light illumination light through the second beam combining light path 23 and enter the second light guide beam 24; the white light illumination light passes through the second light guide beam 24 and the second endoscope body 25 and then illuminates the second neutral gray plate 26; illumination light reflected on the second neutral gray plate 26 is collected by the second endoscope body 25 and imaged by the second imaging lens 27 onto the second image sensor 28; the image formed by the second image sensor 28 is displayed on the display 29; the color illuminometer 210 measures the spectral characteristics of the display 29 display image, calculates the ratio of the image intensity values of the red, green and blue spectral segments and the corresponding luminous power ratio of the red, green and blue spectral segments according to the spectral characteristics, and compares the calculated ratio of the image intensity values of the red, green and blue three channels with the set ratio of the image intensity values of the standard red, green and blue three channels; the comparison result and the calculated luminous power ratio of the corresponding red, green and blue three spectral bands are fed back to the light source control module 21; the light source control module 21 adjusts the light emitting power ratio of the three LEDs in the second light emitting module 22 according to the feedback result until the calculated ratio of the image intensity values of the red, green and blue channels is equal to the set ratio of the image intensity values of the standard red, green and blue channels.
In this example, the ratio of the light emitting powers of the three LEDs in the second light emitting module 22 can be adjusted according to the final display effect of the display 29, so that the image directly observed by human eyes can achieve the optimal color reproducibility.
In some embodiments, the wavelength of the red LED is in the range of 610-660 nm; the wavelength of the green light LED is in the range of 510-560 nm; the wavelength of the blue light LED is within the range of 430-480 nm.
In the description of the present specification, reference to the terms "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
It is to be understood that the invention is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.
Reference numerals:
a first light source module control 11; a first light emitting module 12; a first combined beam path 13; a first light guide beam 14; a first endoscope body 15; a first neutral gray plate 16; a first imaging lens 17; a first image sensor 18; an image processing module 19; a communication module 110; a second light source module control 21; a second light emitting module 22; a second combined beam path 23; a second light guide beam 24; a second endoscope body 25; a second neutral gray plate 26; a second imaging lens 27; a second image sensor 28; a display 29; color illuminometer 210.
Claims (5)
1. The automatic light source spectrum adjusting method is characterized by comprising the following steps of:
s1: controlling to emit three kinds of light rays of red, green and blue, synthesizing the three kinds of light rays into white light, outputting and imaging;
s2: acquiring the proportion of image intensity values of red, green and blue channels of an image;
s3: comparing the obtained ratio of the image intensity values of the red, green and blue three channels with the set ratio of the image intensity values of the standard red, green and blue three channels, and adjusting the output power ratio of the red, green and blue three light rays until the calculated ratio of the image intensity values of the red, green and blue three channels is equal to the set ratio of the image intensity values of the standard red, green and blue three channels;
the automatic light source spectrum adjusting method is applied to an endoscope system capable of automatically adjusting the color reducing effect of an endoscope image, and comprises a first light source control module (11), a first light emitting module (12), a first beam combining light path (13), a first light guide beam (14), a first endoscope body (15), a first neutral gray plate (16), a first imaging lens (17), a first image sensor (18) and an image processing module (19); the first light source control module (11) is connected with the first light emitting module (12), and the first light emitting module (12) comprises a red light LED, a green light LED and a blue light LED; the image processing module (19) is in communication connection with the light source control module (11);
the first light source control module (11) controls the first light emitting module (12), and red light, green light and blue light emitted by the red light LED, the green light LED and the blue light LED are synthesized into white light illumination light through the first beam combining light path (13) and enter the first light guide beam (14); the white light illumination light passes through the first light guide beam (14) and the first endoscope body (15) and then illuminates the first neutral gray plate (16); illumination light reflected on the first neutral gray plate (16) is collected by the first endoscope body (15) and imaged on the first image sensor (18) by the first imaging lens (17); transmitting the image formed by the first image sensor (18) to an image processing module (19); the image processing module (19) decomposes the image into three channels of red, green and blue, calculates the proportion of the image intensity values of the three channels of red, green and blue, and compares the calculated proportion of the image intensity values of the three channels of red, green and blue with the set proportion of the image intensity values of the three channels of standard red, green and blue; feeding back the calculation and judgment results of the image processing module (19) to the first light source control module (11); the first light source control module (11) adjusts the luminous power ratio of the three LEDs in the first luminous module (12) according to the calculation and judgment results until the calculated image intensity value ratio of the red, green and blue three channels is equal to the set image intensity value ratio of the standard red, green and blue three channels;
setting the luminous power of the red LED as P r The method comprises the steps of carrying out a first treatment on the surface of the The luminous power of the green LED is P g The method comprises the steps of carrying out a first treatment on the surface of the The luminous power of the blue LED is P b The method comprises the steps of carrying out a first treatment on the surface of the The transmittance of red light with the wavelength ranging from 610 nm to 660nm in the first light guide beam (14), the first endoscope body (15) and the first imaging lens (17) is T respectively rf 、T re 、T rl The method comprises the steps of carrying out a first treatment on the surface of the The transmittance of green light with the wavelength of 510-560 nm in the first light guide beam (14), the first endoscope body (15) and the first imaging lens (17) is T respectively gf 、T ge 、T gl The method comprises the steps of carrying out a first treatment on the surface of the The transmittance of blue light with the wavelength of 430-480 nm in the first light guide beam (14), the first endoscope body (15) and the first imaging lens (17) is T respectively bf 、T be 、T bl The method comprises the steps of carrying out a first treatment on the surface of the Setting the photoelectric conversion efficiency of red light with wavelength of 610-660 nm on the first image sensor (18) to be gamma r The method comprises the steps of carrying out a first treatment on the surface of the The photoelectric conversion efficiency of green light with the wavelength of 510-560 nm on the first image sensor (18) is Γ g The method comprises the steps of carrying out a first treatment on the surface of the The photoelectric conversion efficiency of blue light with the wavelength of 430-480 nm on the first image sensor (18) is Γ b The method comprises the steps of carrying out a first treatment on the surface of the When imaging the first neutral gray plate (16), the reflectivity of red light, green light and blue light is 1:1:1, a step of; the ratio of the output power of the red light, the green light and the blue light emitted from the red light LED, the green light LED and the blue light LED in the first light emitting module (12) is P r ：P g ：P b After passing through the endoscope system, the ratio of the image intensity values of the red, green and blue three channels of the finally formed image is as follows:
R：G：B=P r ×T rf ×T re ×T rl ×Γ r ：P g ×T gf ×T ge ×T gl ×Γ g ：P b ×T bf ×T be ×T bl ×Γ b 。
2. the automatic adjustment method of light source spectrum according to claim 1, wherein the ratio of the image intensity values of the standard red, green and blue three channels is set in advance according to the need, and is recorded as: r is R 0 ：G 0 ：B 0 。
3. The method for automatically adjusting the spectrum of a light source according to claim 1, wherein S2 specifically comprises the following steps:
s21: dividing the image into three channels of red, green and blue;
s22: and acquiring the proportion of the image intensity values of the red, green and blue channels of the image.
4. The method for automatically adjusting the spectrum of a light source according to claim 1, wherein the step S3 specifically comprises the following steps:
s31: comparing the obtained image intensity value proportion of the red, green and blue three channels with the set image intensity value proportion of the standard red, green and blue three channels, if the two are equal, executing s32, and if the two are not equal, executing s33;
s32: ending the adjustment of the color reducibility of the image;
s33: s1 to S33 are re-executed.
5. The automatic light source spectrum adjustment method according to claim 1, wherein the image processing module (19) and the first light source control module (11) are in communication connection through the communication module (110).
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| CN112717281B (en) * | 2021-01-14 | 2022-07-08 | 重庆翰恒医疗科技有限公司 | Medical robot platform and control method |
| CN114022397B (en) * | 2022-01-06 | 2022-04-19 | 广东欧谱曼迪科技有限公司 | Endoscope image defogging method and device, electronic equipment and storage medium |
| CN114390746A (en) * | 2022-01-27 | 2022-04-22 | 上海安翰医疗技术有限公司 | Capsule endoscope and illumination control method thereof |
| CN117377173A (en) * | 2022-06-30 | 2024-01-09 | 深圳开立生物医疗科技股份有限公司 | Illumination correction method and device, electronic equipment and storage medium |
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