CN114430480A - Environmental color temperature self-adaptive adjusting method and system for medical display - Google Patents
Environmental color temperature self-adaptive adjusting method and system for medical display Download PDFInfo
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- CN114430480A CN114430480A CN202111653664.4A CN202111653664A CN114430480A CN 114430480 A CN114430480 A CN 114430480A CN 202111653664 A CN202111653664 A CN 202111653664A CN 114430480 A CN114430480 A CN 114430480A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000007613 environmental effect Effects 0.000 title claims description 7
- 238000012937 correction Methods 0.000 claims abstract description 65
- 238000012545 processing Methods 0.000 claims abstract description 42
- 238000005286 illumination Methods 0.000 claims abstract description 11
- 230000003287 optical effect Effects 0.000 claims description 6
- 230000006978 adaptation Effects 0.000 claims description 4
- 230000003044 adaptive effect Effects 0.000 claims description 4
- 238000003745 diagnosis Methods 0.000 abstract description 7
- 230000004438 eyesight Effects 0.000 abstract description 4
- 230000004313 glare Effects 0.000 abstract description 3
- 208000003464 asthenopia Diseases 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/73—Colour balance circuits, e.g. white balance circuits or colour temperature control
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
- H04N9/3182—Colour adjustment, e.g. white balance, shading or gamut
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
Abstract
The invention discloses an environment color temperature self-adaptive adjusting method and system for a medical display, which comprises the steps of obtaining a brightness value and a color temperature value of a current environment which are acquired in advance, and an original screen color temperature value of the medical display; calculating an RGB correction coefficient according to the brightness value and the color temperature value of the current environment and the original color temperature value of the screen; performing color temperature correction processing on the video stream by using the RGB correction coefficient to obtain video stream data after the color temperature correction processing; and displaying the obtained video stream data after the color temperature correction processing. The invention breaks through the problem that the fixed screen color temperature can not match with the illumination and color temperature of the current environment to cause glare when the traditional medical display is used in different film reading environments, and the screen color temperature is matched with the ambient illumination and color temperature after the ambient color temperature self-adaption method is introduced, so that a doctor can check the screen of the display more conveniently, the vision of the doctor is protected, the eye fatigue is reduced, and the diagnosis comfort level of the doctor is improved.
Description
Technical Field
The invention relates to the technical field of image processing, in particular to an environment color temperature self-adaptive adjusting method and system for a medical display.
Background
In recent years, digitization of medical images has been rapidly advanced, so that the diagnosis mode of medical images has been fundamentally changed, and medical displays have been produced. Currently, viewing medical images by using a medical display has become an important auxiliary means for modern clinical medical diagnosis, however, due to differences of film reading environments of doctors, such as a diagnosis room, a film reading room, an operating room, an office and the like, differences of ambient illumination and color temperature exist in different film reading environments. When a doctor uses a medical display to check digital images, the color temperature of the display is easily unmatched with the ambient illumination and the color temperature, so that the eyes of the doctor are uncomfortable, and the eyesight of the doctor is affected. In addition, the current medical diagnosis display has three color temperature processing modes, the first mode is no color temperature adjustment, two displays with similar color temperature are selected manually and sold, and time and labor are wasted; the second is to fix a color temperature for display correction, but when the ambient light is high or low, dynamic adaptation is not possible; the third is that the user adjusts the color temperature manually through the menu, and this mode can different ambient light of dynamic adaptation and user preference, but is comparatively loaded down with trivial details, and the user has the problem that the accuse is not good to adjusting numerical value.
Disclosure of Invention
The invention aims to provide an environment color temperature self-adaptive adjusting method and system for a medical display, which solve the problem of glare caused by inconsistent color temperatures of the medical display in different film reading environments, adjust the color temperature more accurately and conveniently, improve the diagnosis comfort level of doctors and protect the eyesight of the doctors.
The invention adopts the following technical scheme for realizing the aim of the invention:
the invention provides an environment color temperature self-adaptive adjusting method for a medical display, which comprises the following steps:
acquiring a brightness value and a color temperature value of a current environment, which are acquired in advance, and an original screen color temperature value of a medical display;
calculating an RGB correction coefficient according to the brightness value and the color temperature value of the current environment and the original color temperature value of the screen;
performing color temperature correction processing on the input video stream by using the RGB correction coefficient to obtain video stream data after the color temperature correction processing;
and displaying the obtained video stream data after the color temperature correction processing.
Furthermore, the illumination intensity and the color temperature of the current environment are collected through a color sensor to obtain the brightness value and the color temperature value of the current environment.
Further, the color temperature value and the color coordinate of the display picture of the medical display are collected by the optical measuring instrument to be used as the original screen color temperature value of the medical display.
Further, the method for performing color temperature correction processing on the input video stream by using the RGB correction coefficients to obtain the video stream data after the color temperature correction processing includes:
setting different target correction color temperature values according to the current environment brightness value and the color temperature value under different brightness;
establishing a corresponding relation between a target correction color temperature value and an original screen color temperature value to obtain an RGB color temperature correction coefficient;
r, G, B of the video stream are multiplied by the corresponding RGB correction coefficients to obtain video stream data after color temperature correction processing.
Furthermore, the value range of the RGB correction coefficient is that x is more than or equal to 0 and less than or equal to 1.
Further, the video stream data after the color temperature correction processing is displayed by being converted into the LVDS format or the eDP format or the VBYONE format.
The invention provides an environment color temperature self-adaptive adjusting method for a medical display, which comprises the following steps:
the system comprises a brightness value and color temperature value acquisition module, a color temperature value acquisition module and a display module, wherein the brightness value and the color temperature value acquisition module are used for acquiring a brightness value and a color temperature value of a current environment which are acquired in advance and an original screen color temperature value of a medical display;
the brightness value and color temperature value processing module is used for calculating an RGB correction coefficient according to the brightness value and the color temperature value of the current environment and the original color temperature value of the screen;
the video processing module is used for carrying out color temperature correction processing on the input video stream by using the RGB correction coefficient to obtain video stream data after the color temperature correction processing;
and the data output module is used for displaying the obtained video stream data after the color temperature correction processing.
The invention has the following beneficial effects:
the invention breaks through the problem that the fixed screen color temperature can not match with the illumination and color temperature of the current environment to cause glare when the traditional medical display is used in different film reading environments, and the screen color temperature is matched with the ambient illumination and color temperature after the ambient color temperature self-adaption method is introduced, so that a doctor can check the screen of the display more conveniently, the vision of the doctor is protected, the eye fatigue is reduced, and the diagnosis comfort level of the doctor is improved.
Drawings
Fig. 1 is a block diagram of an ambient color temperature adaptive adjustment system for a medical display according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In a first aspect, the present invention provides a method and a system for adjusting ambient color temperature adaptation of a medical display, including:
s1, collecting the current ambient illumination value and the color temperature value by using a color sensor, and collecting the original color temperature of the screen of the medical display by using an optical measuring instrument;
s2, calculating RGB correction coefficients according to the environment brightness value, the color temperature value and the original screen color temperature value;
s3, performing color temperature correction processing on the video stream by using the RGB correction coefficient;
and S4, outputting the data after the color temperature correction processing to a liquid crystal screen for display.
In step S1, the environmental brightness value and the color temperature value are obtained by the color sensor, and the original color temperature data, i.e., the color temperature value and the color coordinates, of the medical display are obtained by measuring the central point of the medical display when the pure white field picture is displayed by the optical measurement instrument (CA310, CA 410).
In step S2, the chip or the calculation software for calculating the RGB correction coefficients includes, but is not limited to, an ARM chip, an FPGA chip, an image processing ASIC chip, and upper computer software.
Further, the RGB correction coefficients indicate the correspondence between the RGB values corresponding to the target color temperature and the white field RGB values, where R ═ G ═ B ═ 255(8 bit). In order to find the RGB values corresponding to the target color temperature, tristimulus values XYZ of the color are needed, and the corresponding formula of the tristimulus values of the color and the RGB is as follows:
X＝2.7689R+1.7571G+1.1302B
Y＝1.0000R+4.5907G+0.0601B
Z＝0.0565R+5.5943B
wherein X, Y, Z is the color tristimulus value of the 1931-CIEXYZ standard colorimetric system. Obtaining target XYZ values through a color sensor according to the current ambient illumination and color temperature conditions, and according to a conversion formula of color coordinates x and y and tristimulus values XYZ:
x＝X/(X+Y+Z)
y＝Y/(X+Y+Z)
the method comprises the steps of calculating two target color coordinates of x and y meshes, obtaining an original color temperature value of a display and a corresponding XYZ value according to an optical measuring instrument, calculating two original color coordinates of x and y meshes according to the formula, comparing the x and y meshes with the x and y meshes, and the x and y meshes, adding 1, subtracting 1 or keeping unchanged to a white field, namely R, G, B with a gray level value of 255 according to the proportional relation of RGB in X, Y to obtain an RGB value corresponding to the target color temperature, and obtaining an RGB correction coefficient by using the ratio of the RGB value to the RGB value of the white field.
In step S3, the color temperature correction process is performed on the video stream, and the correction method is as follows: the R, G, B channels of the video stream are multiplied by the corresponding RGB correction coefficients, respectively, to obtain the RGB values after correction, i.e., the video stream data after final correction.
The color temperature correction data output in step S4 may be converted into video format data, and output to a medical display screen for display.
In a second aspect, a self-adaptive adjusting system for the environmental color temperature of a medical display is provided, which comprises a brightness value and color temperature value acquisition module, a brightness value and color temperature value processing module, a video processing module and a data output module;
the brightness value and color temperature value acquisition module acquires an environmental illumination value and a color temperature value by using a color sensor, acquires an original color temperature by using an optical measurement instrument on a screen of the medical display, and transmits data to the brightness value and color temperature value processing module;
the brightness value and color temperature value processing module is used for carrying out algorithm processing on the collected brightness value and color temperature value to obtain an RGB correction coefficient;
the video processing module is used for carrying out color temperature correction processing on the input video stream by using the RGB correction coefficient to obtain video stream data after the color temperature correction processing;
and the data output module is used for outputting the data after the color temperature correction according to the data format required by the screen.
The chips or modes used by the brightness value and color temperature value processing module include, but are not limited to, an ARM chip, an FPGA chip, an image processing ASIC chip, upper computer software, and the like.
And the data output module converts the data after color temperature correction into video format data for display.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A method for ambient color temperature adaptive tuning of medical displays, the method comprising:
acquiring a brightness value and a color temperature value of a current environment, which are acquired in advance, and an original screen color temperature value of a medical display;
calculating an RGB correction coefficient according to the brightness value and the color temperature value of the current environment and the original color temperature value of the screen;
performing color temperature correction processing on the input video stream by using the RGB correction coefficient to obtain video stream data after the color temperature correction processing;
and displaying the obtained video stream data after the color temperature correction processing.
2. The method according to claim 1, wherein the brightness value and the color temperature value of the current environment are obtained by collecting the illumination intensity and the color temperature of the current environment through a color sensor.
3. The adjusting method for self-adapting environmental color temperature of medical display as claimed in claim 1, wherein the color temperature value and color coordinates of the medical display when the display image is a pure white field are collected by the optical measuring instrument as the original screen color temperature value of the medical display.
4. The method for adjusting environmental color temperature adaptation of a medical display according to claim 1, wherein the method for performing color temperature correction processing on the video stream using RGB correction coefficients to obtain the video stream data after the color temperature correction processing comprises:
setting different target correction color temperature values according to the current environment brightness value and the color temperature value under different brightness;
establishing a corresponding relation between a target correction color temperature value and an original screen color temperature value to obtain an RGB color temperature correction coefficient;
r, G, B of the input video stream are multiplied by the corresponding RGB correction coefficients to obtain video stream data after color temperature correction processing.
5. The adjusting method for adaptive ambient color temperature of medical display as claimed in claim 1, wherein the RGB correction coefficients have a value range of 0 ≦ x ≦ 1.
6. The adjusting method and system according to claim 1, wherein the video stream data after color temperature correction processing is converted into LVDS format or eDP format or VBYONE format for display.
7. An ambient color temperature adaptive adjustment system for medical displays, comprising:
the system comprises a brightness value and color temperature value acquisition module, a color temperature value acquisition module and a display module, wherein the brightness value and the color temperature value acquisition module are used for acquiring a brightness value and a color temperature value of a current environment which are acquired in advance and an original screen color temperature value of a medical display;
the brightness value and color temperature value processing module is used for calculating an RGB correction coefficient according to the brightness value and the color temperature value of the current environment and the original color temperature value of the screen;
the video processing module is used for carrying out color temperature correction processing on the input video stream by using the RGB correction coefficient to obtain video stream data after the color temperature correction processing;
and the data output module is used for displaying the obtained video stream data after the color temperature correction processing.
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| CN115050310A (en) * | 2022-05-25 | 2022-09-13 | 中仪英斯泰克进出口有限公司 | 4KLED display screen color temperature control system |
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