CN115909114B - Method and medium for improving display definition of AR glasses in fuming training and glasses - Google Patents
Method and medium for improving display definition of AR glasses in fuming training and glasses Download PDFInfo
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- 239000011521 glass Substances 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000012549 training Methods 0.000 title claims abstract description 21
- 239000000779 smoke Substances 0.000 claims abstract description 171
- 230000000391 smoking effect Effects 0.000 claims description 9
- 229910002601 GaN Inorganic materials 0.000 claims description 6
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 claims description 6
- 238000004422 calculation algorithm Methods 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000004590 computer program Methods 0.000 claims description 6
- 238000002834 transmittance Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000011159 matrix material Substances 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 230000031700 light absorption Effects 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 238000003064 k means clustering Methods 0.000 claims description 3
- 239000003086 colorant Substances 0.000 abstract description 26
- 238000005507 spraying Methods 0.000 description 7
- 230000003190 augmentative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 229910005540 GaP Inorganic materials 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- AJGDITRVXRPLBY-UHFFFAOYSA-N aluminum indium Chemical compound [Al].[In] AJGDITRVXRPLBY-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- HZXMRANICFIONG-UHFFFAOYSA-N gallium phosphide Chemical compound [Ga]#P HZXMRANICFIONG-UHFFFAOYSA-N 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012417 linear regression Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000004984 smart glass Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The invention discloses a method, a medium and glasses for improving the display definition of AR glasses in fuming training, which relate to the technical field of AR glasses display and are used for solving the problem that the AR glasses display is not clear in a smoke environment in the prior art, and the method comprises the following steps: acquiring a color value of a smoke image in a smoke environment; classifying the smoke in advance according to the color value of each smoke image; and switching the display colors of the AR glasses according to the preset correspondence between the classifications and the display colors of the AR glasses according to the classifications of the smog. According to the invention, the AR glasses display different colors according to the colors of the smoke images, so that the distinction between the smoke and the colors displayed by the AR glasses is increased, the display is clearer, and a wearer can clearly see the contents displayed by the AR glasses in a smoke environment.
Description
Technical Field
The invention relates to the technical field of AR (augmented reality) glasses display, in particular to a method, a medium and glasses for improving the display definition of AR glasses in fuming training.
Background
Augmented reality is a technique that calculates the position and angle of a camera image in real time and adds the corresponding image, thereby integrating real world information and virtual world information "seamlessly". The technology aims to carry out fusion interaction on a virtual world and a real world on a display screen, and has three outstanding characteristics: (1) integration of real world and virtual world information; (2) having real-time interactivity; (3) Virtual objects can be additionally positioned in the three-dimensional scale space.
At present, the augmented reality technology is widely applied to the fields of manufacturing and maintenance, aircraft navigation, engineering design, remote robot control and the like, and has a great deal of application in places such as training, maintenance, operation guidance and the like.
The prior art has the following problems: conventional AR smart glasses employ miniature projection displays of LCOS or MICRO-OLED with a brightness of only 7000Nits at maximum. In a smoke environment, the outside world is seen as unclear by the wearer. Especially in the context of different smoke colours.
Disclosure of Invention
The embodiment of the invention provides a method, a medium and glasses for improving the display definition of AR glasses in smoke training, which are used for solving the problem that the AR glasses are not clear in the smoke environment in the prior art.
In a first aspect, a method for improving display definition of AR glasses in fuming training is provided, including:
acquiring a color value of a smoke image in a smoke environment;
classifying the smoke in advance according to the color value of each smoke image;
and switching the display colors of the AR glasses according to the preset correspondence between the classifications and the display colors of the AR glasses according to the classifications of the smog.
In a second aspect, there is provided a computer readable storage medium having computer program instructions stored thereon; the computer program instructions when executed by a processor implement a method for improving the clarity of AR eyewear display in smoking training as described in the embodiments of the first aspect above.
In a third aspect, there is provided AR glasses comprising: a computer readable storage medium as in the second aspect embodiment described above.
The beneficial effects of the invention include: according to the embodiment of the invention, the AR glasses display different colors according to the colors of the smoke images, so that the distinction degree between the smoke and the colors displayed by the AR glasses is increased, and the display of the visual observation content of the outside is clearer.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flow chart of a method for improving the clarity of AR eyewear display in smoking training in accordance with a first embodiment of the present invention.
Fig. 2 is a flow chart of a method of improving the clarity of AR eyewear display in smoking training in accordance with another preferred embodiment of the present invention.
Fig. 3 is a flow chart of a method of improving the clarity of AR eyewear display in a smoking training in accordance with yet another preferred embodiment of the present invention.
Fig. 4 is a flow chart of a method of improving the clarity of AR eyewear display in a smoking training of a further preferred embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention discloses a method for improving the display definition of AR glasses in fuming training. The embodiment of the invention can be applied to the fuming environment of the fuming vehicle. In a smoke environment, the operator wears AR glasses.
Example 1
As shown in fig. 1, the first embodiment of the method includes the following steps:
step S101: color values of a smoke image in a smoke environment are acquired.
According to the embodiment of the invention, the AR glasses are provided with the infrared blocking filter, three red, blue and green color channels are respectively separated by the red photodiode, the blue photodiode and the green photodiode, and are subjected to digital processing by the four-way analog-digital converter of the AR glasses to obtain the color value of each channel, and the color value of the smoke image expressed by RGB is obtained by processing by the central processor of the AR glasses. R/G/B are respectively changed from 0 to 255, and are combined together to represent different colors.
Step S102: the smoke is classified in advance according to the color value of each smoke image.
Specifically, this step includes several cases as follows:
(1) If the R value, the G value and the B value of the color of the smoke image are all larger than a first preset threshold value, and the difference among the R value, the G value and the B value of the color of the smoke image is in a preset range, classifying the smoke as white smoke.
It should be understood that the R, G, and B values of the embodiments of the present invention are all less than 255.
Wherein the first preset threshold is 200. The preset range may be selected empirically, and typically, the preset range is such that the R, G and B values differ little, but are nearly equal. For example, the preset range is 10, i.e. the difference between the R value, the G value and the B value is not more than 10. For a particular application, the white smoke may be represented by the code 000.
(2) If the R value, the G value and the B value of the color of the smoke image are all larger than the second preset threshold value and not larger than the first preset threshold value, and the difference among the R value, the G value and the B value of the color of the smoke image is in a preset range, classifying the smoke as gray smoke.
Wherein the second preset threshold is 120. The preset range may be 10 as previously described. For a particular application, the grey smoke may be represented by code 001.
(3) If the R value, the G value and the B value of the color of the smoke image are smaller than the third preset threshold value, and the difference among the R value, the G value and the B value of the color of the smoke image is within the preset range, classifying the smoke as black smoke.
Wherein the third preset threshold is 60. The preset range may be 10 as previously described. For a particular application, black smoke may be represented by code 111.
It will be appreciated that there may be other colours of smoke, in which case smoke is classified as other colours if the R, G and B values of the colour of the smoke image do not meet the three conditions described above. The preset range may be 10 as previously described. For a particular application, the code 010 may be used to represent smoke of other colors.
Step S103: according to the classification of the smoke, switching the display color of the AR glasses according to the corresponding relation between the preset classification and the display color of the AR glasses.
Specifically, this step is divided into the following cases:
(1) If the smoke is white, the display color of the AR glasses is switched to be black-background red display.
(2) If the smoke is gray smoke, the display color of the AR glasses is switched to be black background and blue.
(3) If the smoke is black smoke, the display color of the AR glasses is switched to be black-background white display.
It should be understood that if the smoke is another color smoke, the display color of the AR glasses may be switched to a white background black display.
The AR glasses display medium of the embodiment of the invention adopts gallium nitride, namely a gallium nitride micro projection display can be adopted for displaying. Compared with the traditional aluminum indium gallium phosphide, the gallium nitride can enable red light, blue light and green light to display results more clearly. In the above cases, the person skilled in the art can adjust the color of the gallium nitride display according to the actual effect requirement, so as to achieve the optimal display effect.
Example two
In the second embodiment, after step S102, the method of the second embodiment of the present invention further includes:
step S104: according to the classification of the smoke, switching the display brightness of the AR glasses according to the corresponding relation between the preset classification and the display brightness of the AR glasses.
Step S104 may be performed simultaneously with step S103, thereby being more advantageous for improving display definition.
Specifically, this step includes several cases as follows:
(1) If the smoke is white smoke, the display brightness of the AR glasses is switched to be the first brightness and the black matrix red display.
(2) If the smoke is gray smoke, the display brightness of the AR glasses is switched to be the second brightness and black matrix blue display.
(3) If the smoke is black smoke, the display brightness of the AR glasses is switched to be third brightness and black-matrix white display.
It should be understood that if the smoke is another color smoke, the display brightness of the AR glasses may be switched to the fourth brightness and the white background black display.
Generally, the AR glasses may have four kinds of brightness, which are respectively ultra-high brightness, medium brightness and low brightness, and the first brightness of the embodiment of the present invention may select ultra-high brightness, the second brightness may select high brightness, the third brightness may select medium brightness, and the fourth brightness may select low brightness. The ultra-high brightness is: 8000 nits or more, the high brightness is: 5000-8000 nits, the medium brightness is: 3000-5000 nits, low brightness: 3000 nit or less.
For each brightness interval, a fixed display brightness value can be set in advance according to actual scene requirements, for example, the fixed display brightness value of ultra-high brightness is 9000 nit, the fixed display brightness value of high brightness is 6000 nit, the fixed display brightness value of medium brightness is 3500 nit, and the like, and a fixed display brightness is selected according to each color.
Furthermore, the fixed brightness is not required, and the corresponding brightness, such as strong light and high brightness, can be selected according to the intensity of the ambient light in each brightness interval, and the two brightness intervals are generally in a linear relationship.
Under the smog of different colours, cooperate the demonstration colour of AR glasses, assist with different luminance and show for show more clearly.
Example III
In the third embodiment, as shown in fig. 3, the process of determining the brightness of the color may also be implemented by using the following algorithm, where the method in the third embodiment of the present invention further includes:
step S301: and processing the smoke image by using a K-means clustering algorithm to obtain an output value K.
And selecting a plurality of smoke samples for clustering. For example, at the scene, some sample images of smoke at the scene are taken randomly through AR glasses, or multiple sample images are taken by cameras on a fuming vehicle. The RGB color values of the image of each sample are input into the algorithm by the k-means algorithm.
(1) Since the number of smoke color samples is not very large, the number of K is set from 1 to 5, then when k=1, all color values are aggregated into 1 class, the center points of all R values, G values and B values are found, and the sum of the distances from the center points to all color points is calculated.
When k=2, all the color values are aggregated into 2 classes, and similarly, the 2 classes are classified by the R value, the G value and the B value, so as to respectively obtain two aggregated center points, and respectively calculate the sum of the distances between the center points and the respective color points.
When k=3, all the color values are aggregated into 3 classes, and 3 classification is performed through the R value, the G value and the B value, so as to obtain three aggregated center points respectively, and the sum of the distances from the center point to the respective color points is calculated respectively.
When k=4, all the color values are aggregated into 4 classes, and 4 classification is performed through the R value, the G value and the B value, so as to obtain four aggregated center points respectively, and the sum of the distances from the center point to the respective color points is calculated respectively.
When k=5, all color values are aggregated into 5 classes, and 5 classification is performed through the R value, the G value and the B value, so as to obtain five aggregated center points respectively, and the sum of distances from the center point to the respective color points is calculated respectively.
And establishing a coordinate relation with an abscissa as a K value and an ordinate as a distance, and outputting the K value of the inflection point when the inflection point appears on the two-dimensional coordinate relation in the data.
Step S302: and switching the display brightness of the AR glasses according to the preset corresponding relation between the output value K and the display brightness level of the AR glasses according to the output value K.
Specifically, this step includes three cases as follows:
(1) If the output value K corresponds to the first brightness level, the display brightness of the AR glasses is switched to be the first brightness.
(2) If the output value K corresponds to the second brightness level, the display brightness of the AR glasses is switched to be the second brightness.
(3) If the output value K corresponds to the third brightness level, the display brightness of the AR glasses is switched to be the third brightness.
Wherein the first luminance is higher than the second luminance, and the second luminance is higher than the third luminance. The first brightness of the embodiment of the invention can be ultrahigh, the second brightness can be high, and the third brightness can be medium. The ultra-high brightness is: 8000 nits or more, the high brightness is: 5000-8000 nits, the medium brightness is: 3000-5000 nits, low brightness: 3000 nit or less.
After the brightness is determined, a specific display brightness of the brightness interval may be selected according to the determined color according to the above embodiments.
Steps S301 to S302 may be performed simultaneously with steps S101 to S103, and then displayed at the same time according to the determined brightness and color.
The color values of the smoke images are classified through the k-means clustering algorithm, so that the color is reflected more accurately, the most appropriate brightness is clustered by matching with the display colors of the AR glasses under the smoke of different colors, and different colors of the AR glasses are correspondingly displayed by being assisted with different brightnesses, so that the display is clearer.
Example IV
The present invention also provides a preferred embodiment in which smoke from a smoking vehicle, as shown in figure 4, may be further segmented in this embodiment for the display of brightness. The selection of the brightness of the lenses of the AR glasses can be achieved individually; the luminance value may be updated further according to the present embodiment on the basis that the luminance section has been divided in the previous embodiment, so that a better luminance display can be further matched at the luminance level that has been determined in the previous embodiment.
The method of the embodiment of the invention further comprises the following steps:
step S401: and establishing a display brightness equation of the AR glasses.
Specifically, the display brightness equation is:
y=a 0 +a 1 x 1 +a 2 x 2 +a 3 x 3 。
wherein y represents a display luminance threshold value,a 0 、a 1 、a 2 、a 3 respectively representing a first coefficient, a second coefficient, a third coefficient and a fourth coefficient,x 1 representing the injection power of the smoke engine/fan of the fuming vehicle,x 2 the wind speed representing the current smoke environment,x 3 indicating the visibility of the current smoke environment.
Step S402: and determining the values of the first coefficient, the second coefficient, the third coefficient and the fourth coefficient according to the classification of the smoke.
In the case of black or white smoke, for example, three parameters are currently used,x 1 ~ x 3 generating a plurality of equations, and finally obtaining a plurality of coefficients by using a simple least square linear regression analysis.
For monochromatic smoke, there may be a plurality of periodic moments, for example, every 2-3 seconds, according to three parameters, a plurality of equations are generated, and the calculation modes are the same. I.e. using the least squares method.
For example, when the smoke is white, the smoke,a 0 =0.235、a 1 =0.002、a 2 =0.002、a 3 =-0.002。
when the smoke is a black smoke,a 0 =0.100、a 1 =0.0025、a 2 =0.0025、a 3 =-0.0025。
step S403: and acquiring the injection power of a smoke engine/fan of the fuming vehicle, the wind speed of the current smoke environment and the visibility of the current smoke environment, and calculating to obtain a display brightness threshold value through a display brightness equation.
Since these parameters affect the concentration of smoke, which in turn affects visibility, visibility is typically linear with brightness. Thus, by coefficient adjustment of these several parameters, an optimal brightness level can be achieved.
The injection power of the engine/fan can be engine or fan power. The wind speed of the current smoke environment can be measured by a wind speed measuring instrument.
The visibility of the current smoke environment is obtained by:
(1) Images between the smoke belt sprayed by the smoke vehicle and the adjacent smoke vehicle are acquired.
The fuming vehicle provided by the embodiment of the invention is fuming from the tail of the vehicle to form a smoke zone. Generally, a plurality of vehicles travel side by side while spraying smoke of the same color.
(2) A first reference point is selected from the edge of the smoke belt sprayed by the smoke car, which is close to the adjacent smoke car, and a second reference point is selected from the edge of the smoke belt sprayed by the adjacent smoke car, which is close to the smoke car.
The connecting line of the first reference point and the second reference point is perpendicular to the two smoke bands, and the distance is shortest.
(3) The first region is acquired with the first reference point as the center, and the second region is acquired with the second reference point as the center.
The areas of the first area and the second area are the same, and the areas are square. For example, the first region and the second region may be square regions of 3*3 or 10×10 pixels. The size of the pixel region can be adjusted according to the image processing requirements.
(4) The scattering coefficient of the first region and the scattering coefficient of the second region are calculated, respectively.
Specifically, the calculation formula of the scattering coefficient of the first region is: 。
where β1 represents a scattering coefficient of the first region, d represents a distance between the first reference point and the second reference point, ti represents a transmittance of each pixel point i in the first region, N1 represents the number of pixel points of the first region, and Z1 represents a set of pixel points of the first region.
Specifically, the calculation formula of the scattering coefficient of the second region is:。
wherein,β 2 representing the scattering coefficient of the second region, t j Representing each pixel point in the second regionjIs used for the optical fiber, the transmittance of the optical fiber,N 2 representing the number of pixels of the second region,Z 2 representing a set of pixels of the second region.
The transmittance of the pixel may be calculated by any suitable known method. For example, the transmittance can be calculated by using the formula disclosed in "visibility detection based on dark channel prior and image entropy" (Zhou Kai, cheng Xiaogang, seedling talking, li Haibo, university of Nanjing post, vol36, no.6, month 12 of 2016).
(5) Calculating the difference between the scattering coefficient of the first region and the scattering coefficient of the second region to obtain the scattering coefficient of the smoke environmentβ。
(6) The visibility of the smoke environment is calculated from the scattering coefficient of the smoke environment and the light absorption coefficient of the smoke spray.
Specifically, the formula for calculating the visibility of the smoke environmentThe method comprises the following steps:。
wherein,αindicating the light absorption coefficient of the aerosol spray,βrepresenting the scattering coefficient of the smoke environment.
Step S404: and determining the display brightness level corresponding to the display brightness threshold according to the display brightness range in which the display brightness threshold is positioned.
The embodiment of the invention can be generally divided into four brightness levels, namely a first brightness level, a second brightness level, a third brightness level and a fourth brightness level in sequence from the big brightness to the small brightness. For each brightness level, the value of the brightness displayed can be referred to in the previous embodiments.
The display brightness range can be determined according to the corresponding combination of the extreme values of the spraying power, the wind speed and the visibility under the actual application environment and the performance of the fuming vehicle. For example, in a specific application environment and fuming vehicle performance, the range of spraying power is 5 kilowatts to 20 kilowatts, the range of wind speed is 0 km/hour to 30 km/hour, the range of visibility is 0.1 to 0.9, and the smoke is black smoke and white smoke, and the dark color and the light color in the jettable smoke colors are respectively.
Based on the above parameter ranges, a number of equations are used:
the spraying power is 5 kw, the wind speed is 0 km/h, the visibility is 0.1, and y=0.1+0.0125+0.0-0.00025=0.1125 in black smoke.
The spraying power is 20 kw, the wind speed is 30 km/h, the visibility is 0.9, and y=0.1+0.05+0.075-0.0195= 0.2055 in black smoke.
The spraying power is 5 kw, the wind speed is 0 km/h, the visibility is 0.1, and y=0.235+0.02+0.0-0.0002=0.2548 in the case of white smoke.
The spraying power is 20 kw, the wind speed is 30 km/h, the visibility is 0.9, and y=0.235+0.06+0.04-0.0018= 0.3332 in the case of white smoke.
The following four sections are divided according to the values, and different brightness levels are sequentially corresponding to the sequence from small to large.
The display luminance threshold value is 4 corresponding to the fourth luminance level if the display luminance threshold value is within the range of (0,0.1125), is 3 corresponding to the third luminance level if the display luminance threshold value is within the range of (0.1125,0.2055), is 2 corresponding to the second luminance level if the display luminance threshold value is within the range of (0.2055,0.2548), is 1 corresponding to the first luminance level if the display luminance threshold value is within the range of (0,2548,0.3332).
Either a more finely divided brightness level or a direct correspondence to a specific brightness value.
Step S405: the AR glasses are controlled to display according to the display brightness level.
The brightness level may be a brightness range or a specific brightness value. In this embodiment, because a plurality of parameters affecting the smoke density are integrated, more accurate brightness matching is achieved, so as to promote clear AR display in a smoke environment.
It should be appreciated that the above display brightness and the above display colors may be performed simultaneously.
Thus, through the steps, the display definition can be improved jointly through the optimal display color and brightness.
For example, the luminance threshold may be accurate, and the display relationship may be established directly.
The brightness display method can be used for ordinary AR glasses, and can be matched with the AR glasses capable of displaying gallium nitride according to each embodiment of the invention, and the display effect of the AR glasses is improved under smoke with different colors through different brightness display intervals. For the display interval of brightness, the definition of display can be accurately improved by introducing a plurality of parameters to comprehensively distinguish.
The embodiment of the invention also discloses a computer readable storage medium, wherein the computer readable storage medium is stored with computer program instructions; the computer program instructions when executed by a processor implement a method for improving the clarity of AR eyewear display in fuming training as described in the above embodiments.
The embodiment of the invention also discloses AR glasses, which comprise: the computer-readable storage medium as in the above embodiments.
In summary, according to the embodiment of the invention, the AR glasses display different colors according to the colors of the smoke image, so that the difference between the smoke and the colors displayed by the AR glasses is increased, the display is clearer, and in addition, different brightness can be displayed according to the colors of the smoke image, so that a wearer can clearly see the content displayed by the AR glasses in a smoke environment.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (9)
1. A method for improving the clarity of AR eyewear in a fuming exercise comprising:
acquiring a color value of a smoke image in a smoke environment;
classifying the smoke in advance according to the color value of each smoke image;
switching the display color of the AR glasses according to the preset corresponding relation between the classification and the display color of the AR glasses according to the classification of the smoke;
the smoke is from a fuming vehicle,
further comprises:
establishing a display brightness equation of the AR glasses, wherein the display brightness equation is as follows: y=a 0 +a 1 x 1 +a 2 x 2 +a 3 x 3 Wherein y represents a display luminance threshold value, a 0 、a 1 、a 2 、a 3 Respectively representing a first coefficient, a second coefficient, a third coefficient and a fourth coefficient, x 1 Representing the injection power, x, of a smoke engine/fan of said fuming vehicle 2 Wind speed, x, representing the current smoke environment 3 Representing the visibility of the current smoke environment;
determining the values of the first coefficient, the second coefficient, the third coefficient and the fourth coefficient according to the classification of the smoke;
acquiring the injection power of a smoke engine/fan of the smoke generating vehicle, the wind speed of the current smoke environment and the visibility of the current smoke environment, and calculating to obtain a display brightness threshold value through the display brightness equation;
determining a display brightness level corresponding to the display brightness threshold according to the display brightness range in which the display brightness threshold is positioned;
and controlling the AR glasses to display according to the display brightness level.
2. A method of improving the clarity of AR eyewear in smoking training according to claim 1, wherein said step of pre-classifying smoke according to the colour value of each smoke image comprises:
if the R value, the G value and the B value of the color of the smoke image are all larger than a first preset threshold value, and the difference among the R value, the G value and the B value of the color of the smoke image is within a preset range, classifying the smoke as white smoke;
classifying the smoke as gray smoke if the R, G, and B values of the color of the smoke image are all greater than a second preset threshold and not greater than a first preset threshold, and the difference between the R, G, and B values of the color of the smoke image is within a preset range;
and classifying the smoke as black smoke if the R value, the G value and the B value of the color of the smoke image are smaller than a third preset threshold value and the difference among the R value, the G value and the B value of the color of the smoke image is within a preset range.
3. The method for improving the display definition of AR glasses in fuming training according to claim 1, wherein the step of switching the display color of the AR glasses according to the correspondence between the preset classification and the display color of the AR glasses comprises:
if the smoke is white smoke, switching the display color of the AR glasses to black-matrix red display;
if the smoke is gray smoke, switching the display color of the AR glasses to black matrix blue display;
and if the smoke is black smoke, switching the display color of the AR glasses to be black-background white display.
4. A method of improving the clarity of AR eyewear in smoking training according to claim 3, wherein after the step of pre-classifying smoke according to the colour value of each smoke image, the method further comprises:
and switching the display brightness of the AR glasses according to the preset corresponding relation between the classification and the display brightness of the AR glasses according to the classification of the smoke.
5. The method of improving AR eyewear display clarity in fuming training of claim 1, further comprising:
processing the smoke image by using a K-means clustering algorithm to obtain an output value K;
and switching the display brightness of the AR glasses according to the preset corresponding relation between the output value K and the display brightness level of the AR glasses according to the output value K.
6. A method of improving the clarity of AR eyewear in smoking training according to claim 1, wherein the step of obtaining the visibility of the current smoke environment comprises:
acquiring images between the smoke generating vehicle and smoke belts sprayed by adjacent smoke generating vehicles;
selecting a first reference point from the edge of the smoke belt sprayed by the smoke car, which is close to the adjacent smoke car, and selecting a second reference point from the edge of the smoke belt sprayed by the adjacent smoke car, which is close to the smoke car, wherein the connecting line of the first reference point and the second reference point is perpendicular to the two smoke belts, and the distance is shortest;
acquiring a first region by taking the first reference point as a center, and acquiring a second region by taking the second reference point as a center, wherein the areas of the first region and the second region are the same and are square;
respectively calculating the scattering coefficient of the first area and the scattering coefficient of the second area;
calculating the difference between the scattering coefficient of the first area and the scattering coefficient of the second area to obtain the scattering coefficient of the smoke environment;
calculating the visibility of the smoke environment according to the scattering coefficient of the smoke environment and the light absorption coefficient of the smoke spray;
wherein, the calculation formula of the visibility of the smog environment is:
wherein alpha represents the light absorption coefficient of the smoke spray and beta represents the scattering coefficient of the smoke environment;
the calculation formula of the scattering coefficient of the first area is as follows:
wherein beta is 1 Representing the scattering coefficient of the first region, d representing the distance between the first reference point and the second reference point, t i Representing the transmittance of each pixel point i in the first region, N 1 Representing the number of pixel points of the first region, Z 1 A set of pixels representing a first region;
the calculation formula of the scattering coefficient of the second region is as follows:
wherein beta is 2 Representing the scattering coefficient of the second region, t j Representing the transmittance of each pixel point j in the second region, N 2 Indicating the number of pixel points of the second region, Z 2 Representing a set of pixels of the second region.
7. A method of improving the clarity of AR eyewear in fuming training according to claim 1, wherein: the display medium of the AR glasses adopts gallium nitride.
8. A computer-readable storage medium, characterized by: the computer readable storage medium has stored thereon computer program instructions; the computer program instructions, when executed by a processor, implement a method of improving AR eyewear display clarity in fuming training according to any one of claims 1 to 7.
9. An AR glasses, comprising: the computer-readable storage medium of claim 8.
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