CN116168658A - LCD color difference adjusting method, device, equipment and medium based on radial reflection - Google Patents
LCD color difference adjusting method, device, equipment and medium based on radial reflection Download PDFInfo
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Abstract
The invention relates to the technical field of image processing, and discloses an LCD color difference adjusting method based on radial reflection, which comprises the following steps: acquiring an image to be displayed of an LCD display screen, and acquiring incident luminous flux and radial reflected luminous flux of the image to be displayed on the LCD display screen; calculating the color change rate of the image to be displayed according to the radial reflected luminous flux and the incident luminous flux; generating a reflection color component histogram of an image to be displayed according to the color change rate, and generating a standard color component histogram of the image to be displayed according to the incident luminous flux; constructing a color change relation of the image to be displayed according to the standard color component histogram and the reflection color component histogram; and correcting the image to be displayed based on the color change relation to obtain a display image. The invention further provides an LCD color difference adjusting device based on radial reflection, electronic equipment and a storage medium. The invention can improve the display effect of the LCD display screen.
Description
Technical Field
The present invention relates to the field of image processing technologies, and in particular, to a radial reflection-based LCD color difference adjustment method, apparatus, device, and medium.
Background
With the development of technology and the improvement of living standard, the use of LCD liquid crystal display (Liquid Crystal Display) on mobile phones, televisions and various devices is increasing, and as the reflective LCD uses the light reflected by the LCD screen to illuminate the screen, backlight is not needed, the reading brightness is comfortable, the eyes are protected, and meanwhile, the energy is saved, the reflective LCD display gradually becomes the main development flow of display technology, so how to improve the reflectivity of the LCD display, increase the color display capability of the LCD display, reduce the color difference becomes the problem to be solved urgently.
In various existing reflection type display screen technologies, cholesterol liquid crystal display screens (Cholesteric Liquid Crystal Display) can change cholesterol liquid crystal components to generate cholesterol liquid crystal rotation distance materials with different proper sizes, a plurality of spiral layer planes are designed in the LCD display screen according to the cholesterol liquid crystal rotation distance materials, any cholesterol liquid crystal layer position can provide reflection light with expected wavelength between different plane layers with the same rotation distance, reflection light efficiency is effectively increased, and the reflection type display screen becomes a main stream of the reflection type display screen, but the cholesterol liquid crystal display screen is easy to generate reflection light leakage phenomenon with high wavelength during low wavelength reflection display, so that color purity is not high during single color display, white balance deviation occurs during multicolor display, and color difference of the LCD display screen is larger during picture display.
Disclosure of Invention
The invention provides an LCD color difference adjusting method, device, equipment and medium based on radial reflection, which mainly aim to solve the problem of larger display color difference of an LCD display screen.
In order to achieve the above object, the present invention provides a method for adjusting LCD chromatic aberration based on radial reflection, comprising:
acquiring an image to be displayed of an LCD display screen, and acquiring incident luminous flux and radial reflected luminous flux of the image to be displayed on the LCD display screen;
calculating the color change rate of the image to be displayed according to the radial reflection luminous flux and the incident luminous flux;
generating a reflection color component histogram of the graph to be displayed according to the color change rate, and generating a standard color component histogram of the graph to be displayed according to the incident luminous flux;
constructing a color change relation of the image to be displayed according to the standard color component histogram and the reflection color component histogram;
and carrying out color correction on the image to be displayed based on the color change relation to obtain a display image.
Optionally, the collecting the incident light flux and the radial reflected light flux of the image to be displayed on the LCD display screen includes:
Acquiring the incident illuminance of the LCD display screen and the radial reflected illuminance of the image to be displayed on the LCD display screen;
calculating according to the incident illuminance and the display area of the LCD display screen to obtain the incident luminous flux of the image to be displayed on the LCD display screen;
and calculating the display proportion between the image area of the image to be displayed and the display area of the LCD display screen, and calculating according to the display proportion, the radial reflection illuminance and the image area to obtain the radial reflection luminous flux of the image to be displayed on the LCD display screen.
Optionally, the calculating the color change rate of the image to be displayed according to the radial reflected light flux and the incident light flux includes:
calculating the radial reflectivity of the LCD display screen according to the radial reflection luminous flux and the incident luminous flux;
calculating an image tristimulus value of the image to be displayed according to the radial reflectivity;
calculating an image tristimulus value of the image to be displayed by using the following formula:
wherein X, Y, Z is the image tristimulus value of the image to be displayed, K is a preset adjustment parameter,
for the spectral energy distribution corresponding to the preset standard illuminant, x (lambda), y (lambda), z (lambda) are standard chromaticity tristimulus values prescribed by the preset international committee for illumination, + >
For said radial reflectivity.
Converting the image to be displayed into a standard color space according to the image tristimulus values to obtain standard color space chromaticity values of the image to be displayed;
and calculating the color change rate of the image to be displayed according to the standard color space chromaticity value and the color value of the image to be displayed.
Optionally, the generating the reflection color component histogram of the graphic to be displayed according to the color change rate includes:
performing color value adjustment on the image to be displayed according to the color change rate to obtain an adjusted image;
dividing the adjustment image into a plurality of adjustment image blocks, and carrying out color quantization on each adjustment image block to obtain a quantization color area and a common color area of each adjustment image block;
and generating an image histogram corresponding to each adjustment image block according to the quantization color region and the common color region, and assembling the image histograms to obtain a reflection color component histogram of the graph to be displayed.
Optionally, the performing color quantization on each of the adjusted image blocks to obtain a quantized color region and a common color region of each of the adjusted image blocks includes:
Transforming each of said adjusted image blocks to HSV color space;
extracting a specific color region in the HSV color space according to a preset color range;
and carrying out color characterization on the specific color region by utilizing the specific color corresponding to the specific color region to obtain a quantized color region and a common color region of each adjustment image block.
Optionally, the generating the standard color component histogram of the graph to be displayed according to the incident light flux includes:
generating a color component value of a preset histogram according to the incident light flux;
generating a color component value of the preset histogram using the formula:
wherein H (u) represents a color component value of the histogram at an abscissa u, w represents a width of the image to be displayed, H represents a height of the image to be displayed, γ represents an incident light wavelength corresponding to the incident light flux, and L (i, j) represents a pixel value of the image to be displayed at the coordinate (i, j);
and generating a standard color component histogram of the image to be displayed according to the color component value.
Optionally, the constructing a color variation relation of the image to be displayed according to the standard color component histogram and the reflection color component histogram includes:
Acquiring a color component coordinate point of each pixel point in the image to be displayed in the standard color component histogram and the reflection color component histogram;
performing function fitting on the color component coordinate points to obtain a color change relation of the image to be displayed;
the color change relation is expressed as:
wherein F (p) represents the color change relation of the pixel point p in the image to be displayed, (x) p ,y p ) For the color component coordinate point of the pixel point p in the image to be displayed in the standard color component histogram, (x) p′ ,y p′ ) For the image to be displayedThe middle pixel point p is at the color component coordinate point of the reflection color component histogram, and sigma is the standard deviation between the color component coordinate point of the standard color component histogram and the color component coordinate point of the reflection color component histogram.
In order to solve the above problems, the present invention also provides an LCD color difference adjusting apparatus based on radial reflection, the apparatus comprising:
the luminous flux acquisition module is used for acquiring an image to be displayed of the LCD display screen and acquiring incident luminous flux and radial reflected luminous flux of the image to be displayed on the LCD display screen;
the color change rate calculation module is used for calculating the color change rate of the image to be displayed according to the radial reflection luminous flux and the incident luminous flux;
A color component histogram calculation module, configured to generate a reflection color component histogram of the graphic to be displayed according to the color change rate, and generate a standard color component histogram of the graphic to be displayed according to the incident light flux;
the color change relation construction module is used for constructing a color change relation of the image to be displayed according to the standard color component histogram and the reflection color component histogram;
and the color correction module is used for carrying out color correction on the image to be displayed based on the color change relation to obtain a display image.
In order to solve the above-mentioned problems, the present invention also provides an electronic apparatus including:
at least one processor; the method comprises the steps of,
a memory communicatively coupled to the at least one processor; wherein,,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the radial reflection based LCD color difference adjustment method described above.
In order to solve the above-mentioned problems, the present invention also provides a computer-readable storage medium having stored therein at least one computer program that is executed by a processor in an electronic device to implement the above-mentioned radial reflection-based LCD color difference adjustment method.
According to the embodiment of the invention, the reflection characteristic of the LCD display screen can be accurately reflected by collecting the incident luminous flux and the radial reflection luminous flux of the image to be displayed on the LCD display screen, so that the chromatic aberration of the image to be displayed on the LCD display screen can be adjusted in a targeted manner; the color change rate of the image to be displayed is calculated through the incident luminous flux and the radial reflection luminous flux, the color change of the image to be displayed on the LCD display screen is represented, the reflection color component histogram and the standard color component histogram of the image to be displayed are further generated, the color component distribution and the standard color distribution of the image to be displayed after reflection can be intuitively displayed, a color change relation of the image to be displayed can be established, the color change relation of the image to be displayed is used for carrying out color correction on the image to be displayed, the color difference of the image to be displayed when the image to be displayed is displayed on the LCD display screen is reduced, and the display color difference of the LCD display screen is reduced. Therefore, the LCD color difference adjusting method, the device, the electronic equipment and the computer readable storage medium based on radial reflection can solve the problem of larger display color difference of the LCD display screen.
Drawings
FIG. 1 is a schematic flow chart of a radial reflection-based LCD color difference adjustment method according to an embodiment of the invention;
FIG. 2 is a flow chart of calculating a color change rate according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a method for generating a histogram of a reflected color component according to an embodiment of the present invention;
FIG. 4 is a functional block diagram of an LCD color difference adjustment device based on radial reflection according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device for implementing the radial reflection-based LCD color difference adjustment method according to an embodiment of the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The embodiment of the application provides an LCD color difference adjusting method based on radial reflection. The execution subject of the radial reflection-based LCD color difference adjustment method includes, but is not limited to, at least one of a server, a terminal, and the like, which can be configured to execute the method provided in the embodiments of the present application. In other words, the radial reflection-based LCD color difference adjustment method may be performed by software or hardware installed in a terminal device or a server device, and the software may be a blockchain platform. The service end includes but is not limited to: a single server, a server cluster, a cloud server or a cloud server cluster, and the like. The server may be an independent server, or may be a cloud server that provides cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, content delivery networks (Content Delivery Network, CDN), and basic cloud computing services such as big data and artificial intelligence platforms.
Referring to fig. 1, a flow chart of a radial reflection-based LCD color difference adjustment method according to an embodiment of the invention is shown. In this embodiment, the method for adjusting LCD color difference based on radial reflection includes:
s1, acquiring an image to be displayed of an LCD display screen, and acquiring incident luminous flux and radial reflected luminous flux of the image to be displayed on the LCD display screen.
In the embodiment of the invention, the LCD display screen can be a display screen without backlight, which directly reflects ambient light or adds auxiliary light to serve as a screen light source, has the advantages of comfortable reading brightness, eye protection, environmental protection and energy saving, and is widely applied to products such as household televisions, electronic readers, electronic notebooks, electronic books, electronic billboards and the like.
In the embodiment of the invention, the incident luminous flux is the radiation power of the environment light which can be perceived by human eyes to the LCD screen, and is equal to the product of the radiation energy of a certain wave band in unit time and the relative visibility of the wave band, and the radial reflection luminous flux is the luminous flux of the environment light radially reflected by the LCD screen.
In the embodiment of the present invention, the collecting the incident light flux and the radial reflected light flux of the image to be displayed on the LCD display screen includes:
Acquiring the incident illuminance of the LCD display screen and the radial reflected illuminance of the image to be displayed on the LCD display screen;
calculating according to the incident illuminance and the display area of the LCD display screen to obtain the incident luminous flux of the image to be displayed on the LCD display screen;
and calculating the display proportion between the image area of the image to be displayed and the display area of the LCD display screen, and calculating according to the display proportion, the radial reflection illuminance and the image area to obtain the radial reflection luminous flux of the image to be displayed on the LCD display screen.
In the embodiment of the invention, the illuminance is the illuminance received in a unit area, and the incident luminous flux and the radial reflection luminous flux are collected through the illuminance, the image area of the graph to be displayed and the area of the LCD display screen.
In the embodiment of the invention, the illuminance and the display area can be calculated by adopting a multiplied four-rule operation rule, and the radial reflection illuminance and the image area can be calculated.
In the embodiment of the invention, the reflection condition of light when the image to be displayed is displayed on the LCD display screen can be obtained through the incident luminous flux and the radial reflection luminous flux, so that the image display effect under the environment light can be judged, and the color difference when the image to be displayed is finally displayed is reduced.
S2, calculating the color change rate of the image to be displayed according to the radial reflection luminous flux and the incident luminous flux.
In an embodiment of the present invention, referring to fig. 2, the calculating a color change rate of the image to be displayed according to the radial reflected light flux and the incident light flux includes:
s21, calculating the radial reflectivity of the LCD screen according to the radial reflection luminous flux and the incident luminous flux;
s22, calculating an image tristimulus value of the image to be displayed according to the radial reflectivity;
s23, converting the image to be displayed into a standard color space according to the image tristimulus values to obtain standard color space chromaticity values of the image to be displayed;
s24, calculating the color change rate of the image to be displayed according to the standard color space chromaticity value and the color value of the image to be displayed.
In the embodiment of the invention, the color change rate is the color change condition of the image to be displayed under the incident luminous flux, and because different pixel points on the image to be displayed may have different color changes, the color change rate can be used for representing the color change of the image after the image to be displayed is displayed on the LCD display screen.
In the embodiment of the invention, the radial reflectivity represents the radial reflectivity of light when an image to be displayed is displayed on an LCD display screen, and specifically, the ratio of the radial reflected luminous flux to the incident luminous flux is taken as the radial reflectivity of the image to be displayed on the LCD display screen.
In the embodiment of the present invention, the image tristimulus values are indicative of the amounts of the stimulus levels of the three primary colors causing the human retina to perceive a certain color, and since it is impossible to allocate all colors existing in nature from the red, green and blue primary colors selected from the actual spectrum, CIE (Commission Internationale de l' Eclairage, international commission on illumination) assumes three primary colors which are not existing in nature in 1931 theoretically, that is, the theoretical three primary colors are represented by the image tristimulus values for allocating all colors in theory, thus forming the XYZ color measurement system. The X primary corresponds to red and violet having a saturation higher than that of spectral red, the Y primary corresponds to green having a saturation higher than that of spectral green at 520 nm, and the Z primary corresponds to blue having a saturation higher than that of spectral blue at 477 nm. The stimulus amounts of these three theoretical primary colors are expressed as X, Y, Z, that is, the red primary color stimulus amount, the green primary color stimulus amount, and the blue primary color stimulus amount required for color matching with the image to be displayed in the three-color system.
In an embodiment of the present invention, the calculating the image tristimulus value of the image to be displayed according to the radial reflectance includes:
calculating an image tristimulus value of the image to be displayed by using the following formula:
wherein X, Y, Z is the image tristimulus value of the image to be displayed, K is a preset adjustment parameter,
for the spectral energy distribution corresponding to the preset standard illuminant, x (lambda), u (lambda), z (lambda) are standard chromaticity tristimulus values prescribed by the preset international committee for illumination, ">
For said radial reflectivity.
In another optional embodiment of the present invention, the standard color space is a CIE (international commission on illumination) system corresponding to CIE (Commission Internationale de l') to obtain brightness, red value and blue value of the image to be displayed, and the color of the image to be displayed can be clearly distributed through the standard color space, so as to accurately display the color difference of the image to be displayed.
In the embodiment of the invention, the color change rate can reflect the color change condition of the image to be displayed when the LCD display screen displays the image to be displayed under the current incident luminous flux, and further can adjust the color difference of the LCD display screen when the LCD display screen displays the image to be displayed.
S3, generating a reflection color component histogram of the graph to be displayed according to the color change rate, and generating a standard color component histogram of the graph to be displayed according to the incident luminous flux.
In the embodiment of the invention, the reflection color component histogram represents the distribution of the image color components of the image to be displayed after the reflection of the ambient light, the standard color component histogram represents the distribution of the image color components of the image to be displayed under the incident light flux corresponding to the ambient light, and the change of the color components when the image to be displayed is displayed on the LCD display screen under the ambient light can be calculated according to the reflection color component histogram and the standard color component histogram.
In an embodiment of the present invention, referring to fig. 3, the generating a reflection color component histogram of the graph to be displayed according to the color change rate includes:
s31, adjusting the color value of the image to be displayed according to the color change rate to obtain an adjusted image;
s32, dividing the adjustment image into a plurality of adjustment image blocks, and carrying out color quantization on each adjustment image block to obtain a quantized color region and a common color region of each adjustment image block;
S33, generating an image histogram corresponding to each adjustment image block according to the quantization color region and the common color region, and assembling the image histograms to obtain a reflection color component histogram of the graph to be displayed.
In the embodiment of the invention, the color value adjustment is to multiply the color value of each display point in the image to be displayed with the color change rate according to the color change rate to obtain an adjusted image after being reflected and displayed by the LCD display screen, and further obtain the image color change of the image to be displayed.
In the embodiment of the invention, the area segmentation is carried out on the adjusted image, the image is segmented into a plurality of image blocks so as to more accurately reflect the color distribution of the adjusted image, specifically, the color in each image block is quantized, so that the similar colors which are not important in the original image can be combined into one color, the color in the image is reduced, the color distribution on each image block is identified, and further, a more accurate reflection color component histogram is obtained.
In the embodiment of the present invention, the performing color quantization on each of the adjusted image blocks to obtain a quantized color region and a common color region of each of the adjusted image blocks includes:
Transforming each of said adjusted image blocks to HSV color space;
extracting a specific color region in the HSV color space according to a preset color range;
and carrying out color characterization on the specific color region by utilizing the specific color corresponding to the specific color region to obtain a quantized color region and a common color region of each adjustment image block.
In the embodiment of the present invention, the HSV (Value) color space is a color space created according to the visual characteristics of colors, which is also called a hexagonal pyramid model, and a specific color range can be extracted through the HSV color space, for example, an image is represented by using 4 pixel values of 32,96,160, and 224. I.e. the image is composed of 256 3 Compressed to 4 3 The color value of the quantized color region is {32,96,160,224}, the color region which is easy to be visually perceived by people in the image to be displayed is divided through the quantized color region, and the color regions which are easy to be visually perceived, such as a black region, a gray region, a white region and the like, are obtained after the division, so that the accuracy of the histogram of the reflected color components is improved.
In another optional embodiment of the present invention, an image histogram corresponding to each of the adjusted image blocks may be generated according to the number of pixels in each of the quantized color region and the normal color region, and further, smoothing processing may be performed on the image histogram corresponding to each of the adjusted image blocks, so as to reduce color differences between adjacent color regions.
In the embodiment of the invention, the image histograms are assembled, namely, the image histograms are collected into a unique vector, so that a unique reflection color component histogram of the image to be displayed is obtained, and specifically, the image histograms can be assembled according to the coordinates of the adjustment image blocks corresponding to different image histograms, so that a unique vector histogram is obtained.
In an embodiment of the present invention, the generating the standard color component histogram of the graphic to be displayed according to the incident light flux includes:
generating a color component value of a preset histogram according to the incident light flux;
the color component values of the preset histogram are generated using the following formula:
wherein H (u) represents a color component value of the histogram at an abscissa u, w represents a width of the image to be displayed, H represents a height of the image to be displayed, γ represents an incident light wavelength corresponding to the incident light flux, and L (i, j) represents a pixel value of the image to be displayed at the coordinate (i, j);
and generating a standard color component histogram of the image to be displayed according to the color component value.
In the embodiment of the invention, the standard color component histogram of the image to be displayed can be correspondingly generated by presetting the color component value of the histogram at the abscissa u, so as to further represent the color distribution condition of the image to be displayed under the incident luminous flux.
In the embodiment of the invention, the color distribution condition of the image to be displayed can be intuitively reflected through the reflection color component histogram and the standard color component histogram, thereby ensuring the effect of displaying the image.
S4, constructing a color change relation of the image to be displayed according to the standard color component histogram and the reflection color component histogram.
In the embodiment of the invention, the color change relation is based on the standard color component histogram and the reflection color component histogram to reflect the color change relation of the image to be displayed, and the color correction is carried out on the image to be displayed through the color change relation, so that the color difference of the image to be displayed when the LCD display screen is displayed is reduced.
In the embodiment of the present invention, the constructing a color variation relation of the image to be displayed according to the standard color component histogram and the reflection color component histogram includes:
acquiring a color component coordinate point of each pixel point in the image to be displayed in the standard color component histogram and the reflection color component histogram;
and performing function fitting on the color component coordinate points to obtain a color change relation of the image to be displayed.
In the embodiment of the present invention, the color change relation is expressed as:
wherein F (p) represents the color change relation of the pixel point p in the image to be displayed, (x) p ,y p ) For the color component coordinate point of the pixel point p in the image to be displayed in the standard color component histogram, (x) p′ ,y p′ ) For the pixel point p in the image to be displayed at the color component coordinate point of the reflection color component histogram, σ is the standard deviation between the color component coordinate point of the standard color component histogram and the color component coordinate point of the reflection color component histogram.
In the embodiment of the invention, the color component coordinate points of each pixel point in the standard color component histogram and the reflection color component histogram can directly represent the values of each pixel point in the standard color component histogram and the reflection color component histogram, so that a color change relation can be fitted, the color change relation of an image to be displayed when the LCD display screen is displayed can be accurately represented, and the image to be displayed is corrected.
And S5, carrying out color correction on the image to be displayed based on the color change relation to obtain a display image.
In the embodiment of the invention, the color difference between the color value of each pixel point in the image to be displayed and the color value of the pixel point under the incident light flux after being reflected by the LCD display screen is calculated through the color change relation representation of the color change relation, and the color of each pixel point in the image to be displayed is adjusted through the color difference, so that the display image is closer to the image to be displayed under the incident light flux, and the display image with better display effect is obtained, thereby improving the display effect of the display image on the LCD display screen and effectively reducing the color difference of the display image.
According to the embodiment of the invention, the reflection characteristic of the LCD display screen can be accurately reflected by collecting the incident luminous flux and the radial reflection luminous flux of the image to be displayed on the LCD display screen, so that the chromatic aberration of the image to be displayed on the LCD display screen can be adjusted in a targeted manner; the color change rate of the image to be displayed is calculated through the incident luminous flux and the radial reflection luminous flux, the color change of the image to be displayed on the LCD display screen is represented, the reflection color component histogram and the standard color component histogram of the image to be displayed are further generated, the color component distribution and the standard color distribution of the image to be displayed after reflection can be intuitively displayed, a color change relation of the image to be displayed can be established, the color change relation of the image to be displayed is used for carrying out color correction on the image to be displayed, the color difference of the image to be displayed when the image to be displayed is displayed on the LCD display screen is reduced, and the display color difference of the LCD display screen is reduced. Therefore, the LCD color difference adjusting method based on radial reflection can solve the problem of larger display color difference of the LCD display screen.
Fig. 4 is a functional block diagram of an LCD color difference adjusting device based on radial reflection according to an embodiment of the present invention.
The LCD color difference adjusting apparatus 400 based on radial reflection according to the present invention may be installed in an electronic device. Depending on the implementation, the LCD color difference adjustment device 400 based on radial reflection may include a light flux collection module 401, a color change rate calculation module 402, a color component histogram calculation module 403, a color change relation construction module 404, and a color correction module 405. The module of the invention, which may also be referred to as a unit, refers to a series of computer program segments, which are stored in the memory of the electronic device, capable of being executed by the processor of the electronic device and of performing a fixed function.
In the present embodiment, the functions concerning the respective modules/units are as follows:
the luminous flux collection module 401 is configured to obtain an image to be displayed on an LCD display screen, and collect an incident luminous flux and a radial reflected luminous flux of the image to be displayed on the LCD display screen;
the color change rate calculating module 402 is configured to calculate a color change rate of the image to be displayed according to the radial reflected light flux and the incident light flux;
the color component histogram calculation module 403 is configured to generate a reflection color component histogram of the graphic to be displayed according to the color change rate, and generate a standard color component histogram of the graphic to be displayed according to the incident light flux;
the color change relation construction module 404 is configured to construct a color change relation of the image to be displayed according to the standard color component histogram and the reflection color component histogram;
the color correction module 405 is configured to perform color correction on the image to be displayed based on the color change relation, so as to obtain a display image.
In detail, each module in the radial reflection-based LCD color difference adjusting device 400 in the embodiment of the present invention adopts the same technical means as the radial reflection-based LCD color difference adjusting method described in fig. 1 to 3, and can produce the same technical effects, which are not described herein.
Fig. 5 is a schematic structural diagram of an electronic device for implementing a radial reflection-based LCD color difference adjustment method according to an embodiment of the present invention.
The electronic device 500 may comprise a processor 501, a memory 502, a communication bus 503 and a communication interface 504, and may further comprise a computer program stored in the memory 502 and executable on the processor 501, such as a radial reflection based LCD color difference adjustment program.
The processor 501 may be formed by an integrated circuit in some embodiments, for example, a single packaged integrated circuit, or may be formed by a plurality of integrated circuits packaged with the same function or different functions, including one or more central processing units (Central Processing unit, CPU), a microprocessor, a digital processing chip, a graphics processor, a combination of various control chips, and so on. The processor 501 is a Control Unit (Control Unit) of the electronic device, connects various components of the entire electronic device using various interfaces and lines, executes or executes programs or modules stored in the memory 502 (e.g., executes an LCD color difference adjustment program based on radial reflection, etc.), and invokes data stored in the memory 502 to perform various functions of the electronic device and process data.
The memory 502 includes at least one type of readable storage medium including flash memory, a removable hard disk, a multimedia card, a card memory (e.g., SD or DX memory, etc.), magnetic memory, magnetic disk, optical disk, etc. The memory 502 may in some embodiments be an internal storage unit of the electronic device, such as a mobile hard disk of the electronic device. The memory 502 may also be an external storage device of the electronic device in other embodiments, for example, a plug-in mobile hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card) or the like. Further, the memory 502 may also include both internal storage units and external storage devices of the electronic device. The memory 502 may be used to store not only application software installed in an electronic device and various types of data, such as codes of LCD color difference adjustment programs based on radial reflection, but also temporarily store data that has been output or is to be output.
The communication bus 503 may be a peripheral component interconnect standard (Peripheral Component Interconnect, PCI) bus or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus, among others. The bus may be classified as an address bus, a data bus, a control bus, etc. The bus is arranged to enable connected communication between the memory 502 and the at least one processor 501 etc.
The communication interface 504 is used for communication between the electronic device and other devices, including network interfaces and user interfaces. Optionally, the network interface may include a wired interface and/or a wireless interface (e.g., WI-FI interface, bluetooth interface, etc.), typically used to establish a communication connection between the electronic device and other electronic devices. The user interface may be a Display (Display), an input unit such as a Keyboard (Keyboard), or alternatively a standard wired interface, a wireless interface. Alternatively, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch, or the like. The display may also be referred to as a display screen or display unit, as appropriate, for displaying information processed in the electronic device and for displaying a visual user interface.
Only an electronic device having components is shown, and it will be understood by those skilled in the art that the structures shown in the figures do not limit the electronic device, and may include fewer or more components than shown, or may combine certain components, or a different arrangement of components.
For example, although not shown, the electronic device may further include a power source (such as a battery) for supplying power to the respective components, and preferably, the power source may be logically connected to the at least one processor 501 through a power management device, so that functions of charge management, discharge management, power consumption management, and the like are implemented through the power management device. The power supply may also include one or more of any of a direct current or alternating current power supply, recharging device, power failure detection circuit, power converter or inverter, power status indicator, etc. The electronic device may further include various sensors, bluetooth modules, wi-Fi modules, etc., which are not described herein.
It should be understood that the embodiments described are for illustrative purposes only and are not limited to this configuration in the scope of the patent application.
The radial reflection based LCD color difference adjustment program stored by the memory 502 in the electronic device 500 is a combination of instructions that, when executed in the processor 501, may implement:
acquiring an image to be displayed of an LCD display screen, and acquiring incident luminous flux and radial reflected luminous flux of the image to be displayed on the LCD display screen;
calculating the color change rate of the image to be displayed according to the radial reflection luminous flux and the incident luminous flux;
Generating a reflection color component histogram of the graph to be displayed according to the color change rate, and generating a standard color component histogram of the graph to be displayed according to the incident luminous flux;
constructing a color change relation of the image to be displayed according to the standard color component histogram and the reflection color component histogram;
and carrying out color correction on the image to be displayed based on the color change relation to obtain a display image.
In particular, the specific implementation method of the above instruction by the processor 501 may refer to the description of the relevant steps in the corresponding embodiment of the drawings, which is not repeated herein.
Further, the modules/units integrated with the electronic device 500 may be stored in a computer readable storage medium if implemented in the form of software functional units and sold or used as a stand alone product. The computer readable storage medium may be volatile or nonvolatile. For example, the computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM).
The present invention also provides a computer readable storage medium storing a computer program which, when executed by a processor of an electronic device, can implement:
acquiring an image to be displayed of an LCD display screen, and acquiring incident luminous flux and radial reflected luminous flux of the image to be displayed on the LCD display screen;
calculating the color change rate of the image to be displayed according to the radial reflection luminous flux and the incident luminous flux;
generating a reflection color component histogram of the graph to be displayed according to the color change rate, and generating a standard color component histogram of the graph to be displayed according to the incident luminous flux;
constructing a color change relation of the image to be displayed according to the standard color component histogram and the reflection color component histogram;
and carrying out color correction on the image to be displayed based on the color change relation to obtain a display image.
In the several embodiments provided in the present invention, it should be understood that the disclosed apparatus, device and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical function division, and there may be other manners of division when actually implemented.
The modules described as separate components may or may not be physically separate, and components shown as modules may or may not be physical units, may be located in one place, or may be distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional module in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units can be realized in a form of hardware or a form of hardware and a form of software functional modules.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.
The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims shall not be construed as limiting the claim concerned.
The embodiment of the application can acquire and process the related data based on the artificial intelligence technology. Among these, artificial intelligence (Artificial Intelligence, AI) is the theory, method, technique and application system that uses a digital computer or a digital computer-controlled machine to simulate, extend and extend human intelligence, sense the environment, acquire knowledge and use knowledge to obtain optimal results.
Furthermore, it is evident that the word "comprising" does not exclude other elements or steps, and that the singular does not exclude a plurality. A plurality of units or means recited in the system claims can also be implemented by means of software or hardware by means of one unit or means. The terms first, second, etc. are used to denote a name, but not any particular order.
Finally, it should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.
Claims (10)
1. A method for adjusting color difference of an LCD based on radial reflection, the method comprising:
Acquiring an image to be displayed of an LCD display screen, and acquiring incident luminous flux and radial reflected luminous flux of the image to be displayed on the LCD display screen;
calculating the color change rate of the image to be displayed according to the radial reflection luminous flux and the incident luminous flux;
generating a reflection color component histogram of the graph to be displayed according to the color change rate, and generating a standard color component histogram of the graph to be displayed according to the incident luminous flux;
constructing a color change relation of the image to be displayed according to the standard color component histogram and the reflection color component histogram;
and carrying out color correction on the image to be displayed based on the color change relation to obtain a display image.
2. The method for adjusting LCD color difference based on radial reflection according to claim 1, wherein the collecting the incident light flux and the radial reflected light flux of the image to be displayed on the LCD display screen comprises:
acquiring the incident illuminance of the LCD display screen and the radial reflected illuminance of the image to be displayed on the LCD display screen;
calculating according to the incident illuminance and the display area of the LCD display screen to obtain the incident luminous flux of the image to be displayed on the LCD display screen;
And calculating the display proportion between the image area of the image to be displayed and the display area of the LCD display screen, and calculating according to the display proportion, the radial reflection illuminance and the image area to obtain the radial reflection luminous flux of the image to be displayed on the LCD display screen.
3. The radial reflection-based LCD color difference adjustment method according to claim 1, wherein the calculating the color change rate of the image to be displayed from the radial reflection luminous flux and the incident luminous flux comprises:
calculating the radial reflectivity of the LCD display screen according to the radial reflection luminous flux and the incident luminous flux;
calculating an image tristimulus value of the image to be displayed according to the radial reflectivity;
calculating an image tristimulus value of the image to be displayed by using the following formula:
wherein X, Y, Z is the tristimulus value of the image to be displayed, K is a preset adjustment parameter，
For the spectral energy distribution corresponding to the preset standard illuminant, x (lambda), y (lambda), z (lambda) are standard chromaticity tristimulus values prescribed by the preset international committee for illumination, +>
For said radial reflectivity.
Converting the image to be displayed into a standard color space according to the image tristimulus values to obtain standard color space chromaticity values of the image to be displayed;
And calculating the color change rate of the image to be displayed according to the standard color space chromaticity value and the color value of the image to be displayed.
4. The method for radial reflection-based LCD color difference adjustment according to claim 1, wherein the generating the reflection color component histogram of the graphic to be displayed according to the color change rate comprises:
performing color value adjustment on the image to be displayed according to the color change rate to obtain an adjusted image;
dividing the adjustment image into a plurality of adjustment image blocks, and carrying out color quantization on each adjustment image block to obtain a quantization color area and a common color area of each adjustment image block;
and generating an image histogram corresponding to each adjustment image block according to the quantization color region and the common color region, and assembling the image histograms to obtain a reflection color component histogram of the graph to be displayed.
5. The method for adjusting color difference of a radial reflection-based LCD according to claim 4, wherein the performing color quantization on each of the adjusted image blocks to obtain a quantized color region and a normal color region of each of the adjusted image blocks comprises:
Transforming each of said adjusted image blocks to HSV color space;
extracting a specific color region in the HSV color space according to a preset color range;
and carrying out color characterization on the specific color region by utilizing the specific color corresponding to the specific color region to obtain a quantized color region and a common color region of each adjustment image block.
6. The radial reflection-based LCD color difference adjustment method according to claim 1, wherein the generating the standard color component histogram of the graphic to be displayed from the incident light flux comprises:
generating a color component value of a preset histogram according to the incident light flux;
the color component values of the preset histogram are generated using the following formula:
wherein H (u) represents a color component value of the histogram at an abscissa u, w represents a width of the image to be displayed, H represents a height of the image to be displayed, γ represents an incident light wavelength corresponding to the incident light flux, and L (i, j) represents a pixel value of the image to be displayed at the coordinate (i, j);
and generating a standard color component histogram of the image to be displayed according to the color component value.
7. The radial reflection-based LCD color difference adjustment method according to claim 1, wherein the constructing the color variation relation of the image to be displayed from the standard color component histogram and the reflection color component histogram comprises:
Acquiring a color component coordinate point of each pixel point in the image to be displayed in the standard color component histogram and the reflection color component histogram;
performing function fitting on the color component coordinate points to obtain a color change relation of the image to be displayed;
the color change relation is expressed as:
wherein F (p) represents the color change relation of the pixel point p in the image to be displayed, (x) p ,y p ) For the color component coordinate point of the pixel point p in the image to be displayed in the standard color component histogram, (x) p′ ,y p′ ) For the pixel point p in the image to be displayed at the color component coordinate point of the reflection color component histogram, σ is the standard deviation between the color component coordinate point of the standard color component histogram and the color component coordinate point of the reflection color component histogram.
8. An LCD color difference adjustment device based on radial reflection, the device comprising:
the luminous flux acquisition module is used for acquiring an image to be displayed of the LCD display screen and acquiring incident luminous flux and radial reflected luminous flux of the image to be displayed on the LCD display screen;
the color change rate calculation module is used for calculating the color change rate of the image to be displayed according to the radial reflection luminous flux and the incident luminous flux;
A color component histogram calculation module, configured to generate a reflection color component histogram of the graphic to be displayed according to the color change rate, and generate a standard color component histogram of the graphic to be displayed according to the incident light flux;
the color change relation construction module is used for constructing a color change relation of the image to be displayed according to the standard color component histogram and the reflection color component histogram;
and the color correction module is used for carrying out color correction on the image to be displayed based on the color change relation to obtain a display image.
9. An electronic device, the electronic device comprising:
at least one processor; the method comprises the steps of,
a memory communicatively coupled to the at least one processor; wherein,,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the radial reflection-based LCD color difference adjustment method according to any one of claims 1 to 7.
10. A computer readable storage medium storing a computer program, wherein the computer program when executed by a processor implements the radial reflection based LCD color difference adjustment method according to any one of claims 1 to 7.
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