CN107093395B - Transparent display device and image display method thereof - Google Patents
Transparent display device and image display method thereof Download PDFInfo
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- CN107093395B CN107093395B CN201710542949.8A CN201710542949A CN107093395B CN 107093395 B CN107093395 B CN 107093395B CN 201710542949 A CN201710542949 A CN 201710542949A CN 107093395 B CN107093395 B CN 107093395B
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Abstract
The embodiment of the invention provides a transparent display device and an image display method thereof, which are used for solving the problem that the color of a background picture behind the conventional transparent display device can influence the interpretation of a viewer on a displayed image, so that the viewing quality of the transparent display device is reduced. In the transparent display device provided by the embodiment of the invention, the acquisition module is used for acquiring a background image corresponding to a display area of the transparent display panel according to a background picture positioned on the first side of the transparent display panel; the adjusting module is used for extracting the gray level of the background image and adjusting the gray level value of the corresponding pixel point in the image to be displayed according to the gray level value of each pixel point in the background image; the display module is used for displaying the adjusted image to be displayed on the second side of the transparent display panel. Further, the influence of the background picture color on the image displayed by the transparent display panel can be reduced, and the viewing quality of the transparent display device is improved.
Description
Technical Field
The invention relates to the technical field of transparent display, in particular to a transparent display device and an image display method thereof.
Background
With the development of display technology, various new technologies are emerging, and the transparent display technology is receiving more and more attention due to the characteristic of the transparent display panel and the unique application thereof. The transparent display technology is a display technology capable of seeing not only an image displayed by the display panel but also a real scene behind the display panel. In real life, transparent display devices are used more and more widely, for example, building windows, automobile windows, shop windows, and the like. Besides the original transparent display function, the display device has the potential for development as an information display in the future, and is thus drawing great attention from the market.
Although many applications that cannot be achieved by the conventional non-transparent display devices can be developed by utilizing the transparent characteristic of the transparent display device, the transparent characteristic also has its disadvantages. For example, when the transparent display device is used, the background image behind the transparent display panel may affect the viewing quality of the user, and when the background color of the environment background image is too dark, the viewer may be affected to interpret the displayed image, thereby greatly reducing the viewing quality of the transparent display device.
In summary, the color of the background image behind the transparent display device affects the interpretation of the display image by the viewer, thereby reducing the viewing quality of the transparent display device.
Disclosure of Invention
The embodiment of the invention provides a transparent display device and an image display method thereof, which are used for solving the problem that the color of a background picture behind the conventional transparent display device can influence the interpretation of a viewer on a displayed image, so that the viewing quality of the transparent display device is reduced.
An embodiment of the present invention provides a transparent display device, including: the device comprises a transparent display panel, an acquisition module, an adjustment module and a display module;
the acquisition module is used for acquiring a background image corresponding to a display area of the transparent display panel according to a background picture on the first side of the transparent display panel; each pixel point in the background image corresponds to a pixel point in the image to be displayed one by one;
the adjusting module is used for extracting the gray level of the background image and adjusting the gray level value of the corresponding pixel point in the image to be displayed according to the gray level value of each pixel point in the background image;
and the display module is used for displaying the adjusted image to be displayed on the second side of the transparent display panel.
Preferably, the transparent display device further includes: at least one camera for acquiring the background image; the shooting device is arranged in a frame area on the first side of the transparent display device.
Preferably, the transparent display device comprises a plurality of shooting devices;
the acquisition module is specifically configured to: respectively acquiring a local background image corresponding to the display area of the transparent display panel through each shooting device; and carrying out image splicing on the acquired multiple local background images to obtain a background image corresponding to the display area of the transparent display panel.
Preferably, the adjusting module is specifically configured to:
normalizing the gray values of all the pixel points by taking the maximum value of the gray values of all the pixel points in the background image as a reference; adjusting the initial driving current value corresponding to each pixel point in the image to be displayed according to the initial driving current value corresponding to each pixel point in the image to be displayed and the normalized gray value of the corresponding pixel point in the background image; and determining the adjusted gray value of each pixel point according to the adjusted driving current value corresponding to each pixel point in the image to be displayed.
Preferably, the adjusting module is specifically configured to:
judging whether the gray value of each pixel point in the background image is smaller than a preset threshold value, if so, increasing the initial driving current value of the corresponding pixel point in the image to be displayed according to the difference value between the preset threshold value and the gray value of the pixel point; otherwise, keeping the initial driving current value of the pixel point in the corresponding image to be displayed unchanged; and determining the adjusted gray value of each pixel point according to the current corresponding driving current value of each pixel point in the image to be displayed.
The embodiment of the invention also provides an image display method of the transparent display device, wherein the transparent display device comprises a transparent display panel, and the method comprises the following steps:
acquiring a background image corresponding to a display area of the transparent display panel according to a background picture on the first side of the transparent display panel; each pixel point in the background image corresponds to a pixel point in the image to be displayed one by one;
extracting the gray level of the background image, and adjusting the gray level value of the corresponding pixel point in the image to be displayed according to the gray level value of each pixel point in the background image;
and displaying the adjusted image to be displayed on the second side of the transparent display panel.
Preferably, the transparent display device further comprises at least one shooting device for acquiring the background image; the shooting device is arranged in a frame area on the first side of the transparent display device.
Preferably, the transparent display device includes a plurality of photographing devices, and the acquiring of the background image corresponding to the display area of the transparent display panel includes:
respectively acquiring a local background image corresponding to the display area of the transparent display panel through each shooting device;
and carrying out image splicing on the acquired multiple local background images to obtain a background image corresponding to the display area of the transparent display panel.
Preferably, adjusting the gray value of the corresponding pixel point in the image to be displayed according to the gray value of each pixel point in the background image includes:
normalizing the gray values of all the pixel points by taking the maximum value of the gray values of all the pixel points in the background image as a reference;
initializing an initial driving current value corresponding to each pixel point in the image to be displayed according to the initial driving current value corresponding to each pixel point in the image to be displayed and the normalized gray value of the corresponding pixel point in the background image;
and determining the adjusted gray value of each pixel point according to the adjusted driving current value corresponding to each pixel point in the image to be displayed.
Preferably, adjusting the gray value of the corresponding pixel point in the image to be displayed according to the gray value of each pixel point in the background image includes:
judging whether the gray value of each pixel point in the background image is smaller than a preset threshold value, if so, increasing the initial driving current value of the corresponding pixel point in the image to be displayed according to the difference value between the preset threshold value and the gray value of the pixel point; otherwise, keeping the initial driving current value of the pixel point in the corresponding image to be displayed unchanged;
and determining the adjusted gray value of each pixel point according to the current corresponding driving current value of each pixel point in the image to be displayed.
The beneficial effects of the invention include:
the transparent display device provided by the embodiment of the invention can acquire the background image behind the transparent display panel through the acquisition module, and the adjustment module can adjust the gray value of the image to be displayed according to the gray value of each pixel point in the acquired background image, so that the influence of the background picture color on the image displayed by the transparent display panel can be reduced, and the ornamental quality of the transparent display device is improved.
Drawings
Fig. 1 is a schematic structural diagram of a transparent display device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating relative positions of a transparent display device and a background image according to an embodiment of the present invention;
fig. 3a to fig. 3d are respectively a local background image obtained by four cameras according to an embodiment of the present invention;
fig. 4 is a schematic view of an image structure after image stitching is performed on four local background images according to an embodiment of the present invention;
fig. 5 is a flowchart of an image display method of a transparent display apparatus according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a transparent display device and an image display method thereof, which are used for solving the problem that the color of a background picture behind the conventional transparent display device can influence the interpretation of a viewer on a displayed image, so that the viewing quality of the transparent display device is reduced.
The transparent display device provided by the embodiment of the invention can adjust the gray value of the image to be displayed according to the background image acquired by the background image behind the transparent display device and the gray value of each pixel point in the background image, thereby reducing the influence of the color of the background image on the image displayed by the transparent display panel and improving the ornamental quality of the transparent display device.
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation. And the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The following first describes a transparent display device provided in an embodiment of the present invention; next, an image display method of the transparent display device provided in the embodiment of the present invention is described.
As shown in fig. 1, a schematic structural diagram of a transparent display device according to an embodiment of the present invention is provided, where the transparent display device 10 includes: the display device comprises a transparent display panel 101, an acquisition module 102, an adjustment module 103 and a display module 104;
an obtaining module 102, configured to obtain a background image 202 corresponding to a display area of the transparent display panel 101 according to a background picture 201 located on a first side of the transparent display panel 101; wherein, each pixel point in the background image 202 corresponds to a pixel point in the image to be displayed one by one;
the adjusting module 103 is configured to perform gray extraction on the background image 202, and adjust a gray value of a corresponding pixel point in the image to be displayed according to a gray value of each pixel point in the background image 202;
and a display module 104, configured to display the adjusted image to be displayed on the second side of the transparent display panel 101.
The obtaining module 102, the adjusting module 103, and the display module 104 are only a plurality of modules divided for clearly illustrating the functions of the transparent display device, and are actually integrated in the display device, and may be separate structures or integrated structures. In addition, the process of adjusting the gray scale value of the image to be displayed in the present invention is also the process of adjusting the driving current, so if an external compensation circuit is already disposed in the transparent display panel, the function of the adjusting module 103 is implemented by the external compensation circuit, and if the external compensation circuit is not disposed, a structure that is added separately may be adopted.
Fig. 2a is a schematic diagram illustrating a relative position between a transparent display device and a background picture according to an embodiment of the present invention. In specific implementation, a general transparent display device includes a transparent display panel, and it is assumed that a surface of the transparent display panel 101 facing to a back side in fig. 2a is a first side (a side that is not visible in the figure), and the background screen 201 is located on the first side; the side facing the outside is the second side (the side visible in the figure), and the image to be displayed is displayed on this side of the transparent display panel.
In the actual display process of the transparent display device, only the portion of the background picture 201 corresponding to the display area AA of the transparent display panel affects the image displayed on the transparent display panel, that is, the background image 202 corresponding to the display area in fig. 2a affects the display, so that the obtaining module 102 needs to obtain the background image 202 corresponding to the display area according to the background picture behind the transparent display panel, that is, the image shown in fig. 2b is obtained, which is a schematic diagram of the background picture corresponding to the display area in fig. 2a provided by the embodiment of the present invention.
In specific implementation, the depth of the color of each pixel point in the general background image may affect the display image of the transparent display panel, and when the background color of the environment background image is too deep, the interpretation of the display image by the viewer may be affected, thereby greatly reducing the viewing quality of the transparent display device. Therefore, in the embodiment of the present invention, the adjusting module 103 in the transparent display apparatus may perform gray level extraction on the background image 202, so as to analyze the gray level value of each pixel point in the background image, and further enable the adjusting module 103 to adjust the gray level value of the corresponding pixel point in the image to be displayed according to the gray level value of each pixel point in the background image 202; the specific adjustment method is not limited herein, and two possible adjustment methods will be described in detail later.
Specifically, the background image 202 corresponds to the display area AA, and the background image 202 and the image to be displayed have the same size, that is, each pixel point in the background image 202 corresponds to a pixel point in the image to be displayed one by one; therefore, when adjusting the gray value of the image to be displayed, the pixel points in the image to be displayed are respectively adjusted according to the gray value of each pixel point in the background image 202. And displays the adjusted image to be displayed on the second side of the transparent display panel 101 through the display module 104 in the transparent display device.
The transparent display device provided by the embodiment of the invention can adjust the gray value of the image to be displayed according to the gray value of each pixel point in the acquired background image, thereby reducing the influence of the background picture color on the image displayed by the transparent display panel and improving the ornamental quality of the transparent display device.
Two feasible methods for adjusting the image to be displayed are described in detail below, and it should be noted that the embodiments of the present invention only provide two feasible methods for adjusting the gray value of the image to be displayed according to the gray value of each pixel in the background image, and are not limited to the following two methods for adjusting the image to be displayed.
The method comprises the following steps:
the normalization processing can be performed by the gray value of each pixel point in the background image.
Specifically, the adjusting module is specifically configured to: normalizing the gray values of all the pixel points by taking the maximum value of the gray values of all the pixel points in the background image as a reference; adjusting the initial driving current value corresponding to each pixel point in the image to be displayed according to the initial driving current value corresponding to each pixel point in the image to be displayed and the normalized gray value of the corresponding pixel point in the background image; and determining the adjusted gray value of each pixel point according to the adjusted driving current value corresponding to each pixel point in the image to be displayed.
In specific implementation, the gray values of all the pixels in the background image need to be normalized, and the driving current value of each pixel in the image to be displayed is adjusted according to the initial driving current value corresponding to each pixel in the image to be displayed and the normalized gray value of the corresponding pixel in the background image. The following takes pixel M and pixel N in fig. 2b as an example for explanation.
For example, assume that the pixel M in fig. 2b is a pixel having the maximum gray-scale value of all pixels in the background image, the gray-scale value of the pixel M is 255, and the gray-scale value of the pixel N is 127, so that the gray-scale value of the pixel M is 255, and after normalization is performed, the normalized gray-scale value of the pixel M is 1, and the normalized gray-scale value of the pixel N is 127/255.
And then, dividing the initial driving current value corresponding to each pixel point in the image to be displayed by the normalized gray value of the pixel point corresponding to the background image to obtain the adjusted driving current value corresponding to each pixel point in the image to be displayed. For example, the initial driving current value corresponding to the pixel point M in the image to be displayed is 3A, and is still 3A after being divided by the normalized gray value 1 of the pixel point M; the initial driving current value corresponding to the pixel point N in the image to be displayed is 1A, and 2A is obtained after dividing the initial driving current value by the normalized gray value 1 of the pixel point M.
The second method comprises the following steps:
in addition to the first method, whether the gray value of the pixel point in the image to be displayed needs to be adjusted or not can be judged by comparing the gray value of each pixel point in the background image with a preset threshold value.
Specifically, the adjusting module is specifically configured to: judging whether the gray value of each pixel point in the background image is smaller than a preset threshold value, if so, increasing the initial driving current value of the pixel point in the corresponding image to be displayed according to the difference value between the preset threshold value and the gray value of the pixel point; otherwise, keeping the initial driving current value of the pixel point in the corresponding image to be displayed unchanged; and determining the adjusted gray value of each pixel point according to the current corresponding driving current value of each pixel point in the image to be displayed.
In specific implementation, a preset threshold of a gray value needs to be set in advance, the gray value of each pixel point in the background image is compared with the preset threshold, and whether the driving current corresponding to the pixel point in the image to be displayed is changed or not is determined according to a comparison result. The following still takes the pixel M and the pixel N in fig. 2b as an example for explanation.
For example, assume that the pixel M in fig. 2b is a pixel with the maximum gray-scale value of all pixels in the background image, the gray-scale value of the pixel M is 255, the gray-scale value of the pixel N is 127, and the preset threshold of the gray-scale value is 128. Since the gray value 127 of the pixel point N is smaller than the preset threshold 128, the adjusting module in the transparent display device can appropriately increase the initial driving current value of the pixel point N in the corresponding image to be displayed according to the difference value 1 between the preset threshold and the gray value of the pixel point, so that the pixel point N in the image to be displayed is displayed more clearly, and the influence of the gray value of the pixel point N in the background image on the display is reduced. Since the gray value 255 of the pixel M in the background image is greater than the preset threshold 128, the display of the pixel M in the image to be displayed is generally not affected, and therefore the initial driving current value of the pixel M in the image to be displayed is not processed and remains unchanged.
In a specific implementation, a background image corresponding to the display area may be acquired according to the background screen in any manner, for example, a shooting device for acquiring the background image may be provided in the transparent display device. Preferably, the transparent display device further includes: at least one camera 105 for acquiring a background image; the camera 105 is arranged in the frame area BB on the first side of the transparent display.
The number of the cameras 105 may be set as needed, for example, only one camera may be set, or as shown in fig. 2b, a frame area BB is located around the transparent display panel AA, one camera 105 is respectively located at four corners of the frame area (i.e., the position indicated by the dashed circle in the figure), and the camera 105 is also located on the first side of the transparent display panel 101, so that the obtaining module can obtain the background image through the background image.
Specifically, the number of the shooting devices may be set as needed, as long as it is ensured that a complete background image corresponding to the display area can be obtained. Preferably, the transparent display device includes a plurality of cameras 105; the obtaining module 102 is specifically configured to: respectively acquiring a local background image 203 corresponding to the display area AA of the transparent display panel 101 through each shooting device 105; and carrying out image splicing on the acquired multiple local background images 203 to obtain a background image 202 corresponding to the display area AA of the transparent display panel 101.
In a specific implementation, the specific number of imaging devices and the specific manner of image stitching are not limited, and any method may be used as long as the background image corresponding to the display area can be acquired.
For example, when four photographing devices are included in the transparent display device provided by the embodiment of the present invention, four photographing devices (A, B, C, D) may be disposed in four corners of the bezel region, respectively, as shown in fig. 2 b. Four local background images are obtained by the four cameras respectively, as shown in fig. 3a to 3d, which are the local background images obtained by the four cameras according to the embodiment of the present invention.
Because four local background images need to be subjected to image splicing, four corners far away from the center position of a background image in the four local background images are respectively selected as the origin of each local background image, and the four corners in the acquired background image are taken as the coordinates of the center point of each local background image (namely the positions of the four shooting devices projected on the background image, A (x) in the image1,y1)、B(x2,y2)、C(x3,y3)、D(x4,y4) Then, image stitching is performed on the four local background images to obtain an image shown in fig. 4, and fig. 4 is an image structure schematic diagram after the image stitching is performed on the four local background images provided by the embodiment of the present invention; and a part of the image corresponding to the display area AA area (i.e., the image in the dashed rectangle) is cut out from the stitched image as a background image 202.
In addition, when the image splicing is performed through a plurality of local backgrounds to obtain a background image corresponding to the display area, in order to achieve accurate splicing, a slightly larger point can be set for each local background obtained through shooting, so that the image splicing can be completed quickly and accurately according to the characteristics of the overlapping area during the image splicing.
In specific implementation, the transparent display device may perform gray value adjustment on each image to be displayed according to a background image; if the background image is fixed, the adjustment can be set to be only once; or the frequency is set to be adjusted once every certain time according to the frequency acquired by the shooting device. The specific frequency of adjustment may be set as desired, again without limitation.
Based on the same inventive concept, the embodiment of the invention also provides an image display method of the transparent display device. Because the principle of solving the technical problem of the method is similar to that of the transparent display device provided by the embodiment of the invention, the implementation of the method can refer to the implementation of the transparent display device, and repeated parts are not repeated.
Fig. 5 is a flowchart of an image display method of a transparent display apparatus according to an embodiment of the present invention. Wherein the transparent display device comprises a transparent display panel, as shown in fig. 5, the method comprises the following steps:
and 503, displaying the adjusted image to be displayed on the second side of the transparent display panel.
Preferably, the transparent display device further comprises at least one shooting device for acquiring a background image; the shooting device is arranged in the frame area on the first side of the transparent display device.
Preferably, the transparent display device includes a plurality of photographing devices for acquiring a background image corresponding to a display area of the transparent display panel, and includes:
respectively acquiring a local background image corresponding to the display area of the transparent display panel through each shooting device;
and carrying out image splicing on the obtained multiple local background images to obtain a background image corresponding to the display area of the transparent display panel.
Preferably, adjusting the gray value of the corresponding pixel point in the image to be displayed according to the gray value of each pixel point in the background image includes:
normalizing the gray values of all the pixel points by taking the maximum value of the gray values of all the pixel points in the background image as a reference;
adjusting the initial driving current value corresponding to each pixel point in the image to be displayed according to the initial driving current value corresponding to each pixel point in the image to be displayed and the normalized gray value of the corresponding pixel point in the background image;
and determining the adjusted gray value of each pixel point according to the adjusted driving current value corresponding to each pixel point in the image to be displayed.
Preferably, adjusting the gray value of the corresponding pixel point in the image to be displayed according to the gray value of each pixel point in the background image includes:
judging whether the gray value of each pixel point in the background image is smaller than a preset threshold value, if so, increasing the initial driving current value of the pixel point in the corresponding image to be displayed according to the difference value between the preset threshold value and the gray value of the pixel point; otherwise, keeping the initial driving current value of the pixel point in the corresponding image to be displayed unchanged;
and determining the adjusted gray value of each pixel point according to the current corresponding driving current value of each pixel point in the image to be displayed.
From the above, it can be seen that: the transparent display device provided by the embodiment of the invention can acquire the background image behind the transparent display panel through the acquisition module, and the adjustment module can adjust the gray value of the image to be displayed according to the gray value of each pixel point in the acquired background image, so that the influence of the background picture color on the image displayed by the transparent display panel can be reduced, and the ornamental quality of the transparent display device is improved.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A transparent display device, comprising: the device comprises a transparent display panel, an acquisition module, an adjustment module and a display module;
the acquisition module is used for acquiring a background image corresponding to a display area of the transparent display panel according to a background picture on the first side of the transparent display panel; each pixel point in the background image corresponds to a pixel point in the image to be displayed one by one;
the adjusting module is used for extracting the gray level of the background image and adjusting the gray level value of the corresponding pixel point in the image to be displayed according to the gray level value of each pixel point in the background image;
and the display module is used for displaying the adjusted image to be displayed on the second side of the transparent display panel.
2. The transparent display device of claim 1, further comprising: at least one camera for acquiring the background image; the shooting device is arranged in a frame area on the first side of the transparent display device.
3. The transparent display device of claim 2, wherein the transparent display device comprises a plurality of cameras;
the acquisition module is specifically configured to: respectively acquiring a local background image corresponding to the display area of the transparent display panel through each shooting device; and carrying out image splicing on the acquired multiple local background images to obtain a background image corresponding to the display area of the transparent display panel.
4. The transparent display device of claim 1, wherein the adjustment module is specifically configured to:
normalizing the gray values of all the pixel points by taking the maximum value of the gray values of all the pixel points in the background image as a reference; adjusting the initial driving current value corresponding to each pixel point in the image to be displayed according to the initial driving current value corresponding to each pixel point in the image to be displayed and the normalized gray value of the corresponding pixel point in the background image; and determining the adjusted gray value of each pixel point according to the adjusted driving current value corresponding to each pixel point in the image to be displayed.
5. The transparent display device of claim 1, wherein the adjustment module is specifically configured to:
judging whether the gray value of each pixel point in the background image is smaller than a preset threshold value, if so, increasing the initial driving current value of the corresponding pixel point in the image to be displayed according to the difference value between the preset threshold value and the gray value of the pixel point; otherwise, keeping the initial driving current value of the pixel point in the corresponding image to be displayed unchanged; and determining the adjusted gray value of each pixel point according to the current corresponding driving current value of each pixel point in the image to be displayed.
6. An image display method of a transparent display apparatus, the transparent display apparatus including a transparent display panel, the method comprising:
acquiring a background image corresponding to a display area of the transparent display panel according to a background picture on the first side of the transparent display panel; each pixel point in the background image corresponds to a pixel point in the image to be displayed one by one;
extracting the gray level of the background image, and adjusting the gray level value of the corresponding pixel point in the image to be displayed according to the gray level value of each pixel point in the background image;
and displaying the adjusted image to be displayed on the second side of the transparent display panel.
7. The method of claim 6, wherein the transparent display device further comprises at least one camera for capturing the background image; the shooting device is arranged in a frame area on the first side of the transparent display device.
8. The method of claim 7, wherein the transparent display device comprises a plurality of cameras, and the acquiring the background image corresponding to the transparent display panel display area comprises:
respectively acquiring a local background image corresponding to the display area of the transparent display panel through each shooting device;
and carrying out image splicing on the acquired multiple local background images to obtain a background image corresponding to the display area of the transparent display panel.
9. The method of claim 6, wherein adjusting the gray value of the corresponding pixel point in the image to be displayed according to the gray value of each pixel point in the background image comprises:
normalizing the gray values of all the pixel points by taking the maximum value of the gray values of all the pixel points in the background image as a reference;
adjusting the initial driving current value corresponding to each pixel point in the image to be displayed according to the initial driving current value corresponding to each pixel point in the image to be displayed and the normalized gray value of the corresponding pixel point in the background image;
and determining the adjusted gray value of each pixel point according to the adjusted driving current value corresponding to each pixel point in the image to be displayed.
10. The method of claim 6, wherein adjusting the gray value of the corresponding pixel point in the image to be displayed according to the gray value of each pixel point in the background image comprises:
judging whether the gray value of each pixel point in the background image is smaller than a preset threshold value, if so, increasing the initial driving current value of the corresponding pixel point in the image to be displayed according to the difference value between the preset threshold value and the gray value of the pixel point; otherwise, keeping the initial driving current value of the pixel point in the corresponding image to be displayed unchanged;
and determining the adjusted gray value of each pixel point according to the current corresponding driving current value of each pixel point in the image to be displayed.
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