CN117351861A - Display method and device of display screen, storage medium and processor - Google Patents

Abstract

The invention discloses a display method and device of a display screen, a storage medium and a processor. Wherein the method comprises the following steps: acquiring a plurality of signal sources to be displayed of a display screen, and converting each signal source from a first electric signal into a first optical signal to obtain a plurality of first optical signals; respectively converting the first optical signals from an original color gamut to a target color gamut displayed by a display screen to obtain second optical signals; converting each second optical signal into a second electrical signal to obtain a plurality of second electrical signals; performing image processing on the images corresponding to the second electric signals to obtain a third electric signal; and controlling the display screen to display based on the third electric signal. The invention solves the technical problem that the display screen is difficult to display a plurality of signal sources correctly.

Description

Display method and device of display screen, storage medium and processor

Technical Field

The present invention relates to the field of display screens, and in particular, to a display method, a device, a storage medium, and a processor for a display screen.

Background

At present, when a display screen displays, a situation that different signal sources need to be processed is often encountered, for example, in the case of broadcasting playing and a large-screen display application of a Light-Emitting Diode (LED), a situation that signal sources with different formats need to be spliced is often encountered.

However, the display screen lacks a uniform method for processing different signal sources, so that it is difficult to correctly display related contents for a plurality of signal sources.

Aiming at the technical problem that the display screen is difficult to correctly display a plurality of signal sources, no effective solution is proposed at present.

Disclosure of Invention

The embodiment of the invention provides a display method, a display device, a storage medium and a processor for a display screen, which at least solve the technical problem that the display screen is difficult to display a plurality of signal sources correctly.

According to an aspect of an embodiment of the present invention, a display method of a display screen is provided. The method may include: acquiring a plurality of signal sources to be displayed of a display screen, and converting each signal source from a first electric signal into a first optical signal to obtain a plurality of first optical signals; respectively converting the first optical signals from an original color gamut to a target color gamut displayed by a display screen to obtain second optical signals; converting each second optical signal into a second electrical signal to obtain a plurality of second electrical signals; performing image processing on the images corresponding to the second electric signals to obtain a third electric signal; and controlling the display screen to display based on the third electric signal.

Optionally, controlling the display screen to display based on the third electrical signal includes: and converting the third electric signal into a third optical signal, and controlling the display screen to display according to the third optical signal.

Optionally, converting the third electrical signal into a third optical signal includes: converting the third electrical signal into a third optical signal according to an inverse function of the photoelectric conversion function; converting each of the second optical signals into a second electrical signal, comprising: each of the second optical signals is converted into a second electrical signal according to the same photoelectric conversion function.

Optionally, after converting the plurality of first optical signals from the original color gamut to the target color gamut displayed by the display screen, respectively, to obtain the plurality of second optical signals, the method further includes: performing brightness compensation on at least one first target optical signal in the plurality of second optical signals; converting each of the second optical signals into a second electrical signal, comprising: each first target optical signal after brightness compensation is converted into a second electric signal.

Optionally, performing brightness compensation on at least one first target optical signal in the plurality of second optical signals includes: sliding window processing is carried out on the plurality of second optical signals through the target template window, so that second target optical signals, at least one first target optical signal and third target optical signals, the brightness values of which are identical to those of the first target optical signals, are obtained, and the third target optical signals, which are different from the brightness values of the first target optical signals by a first target brightness value, are obtained, wherein the first target brightness value is related to the sum of the number of the second target optical signals and the number of the at least one first target optical signals; determining a target compensation value corresponding to each first target optical signal based on the brightness value of the second target optical signal and the brightness value of the third target optical signal; and carrying out brightness compensation on each first target optical signal according to the corresponding target compensation value.

Optionally, converting the plurality of first optical signals from the original color gamut to a target color gamut displayed by the display screen, respectively, to obtain a plurality of second optical signals, including: respectively converting the first color values of the first optical signals corresponding to the original color gamut into second color values in the target color space according to a first conversion matrix of the original color gamut to obtain a plurality of second color values; converting each second color value into a third color value in the target color domain according to the same second conversion matrix to obtain a plurality of third color values; and determining the light signals corresponding to each third color value as second light signals to obtain a plurality of second light signals.

Optionally, converting each signal source from a first electrical signal to a first optical signal includes: each signal source is converted from a first electrical signal to a first optical signal according to an electro-optical conversion function.

Optionally, the method further comprises: determining a target format for each signal source; converting each signal source from a first electrical signal to a first optical signal according to an electro-optic conversion function, comprising: and converting the first electric signal of each signal source into a first optical signal according to an electro-optical conversion function corresponding to the target format.

According to another aspect of the embodiment of the invention, a display device of a display screen is also provided. The apparatus may include: the display screen comprises an acquisition unit, a display unit and a control unit, wherein the acquisition unit is used for acquiring a plurality of signal sources to be displayed on the display screen, and converting each signal source from a first electric signal into a first optical signal to obtain a plurality of first optical signals; the first conversion unit is used for respectively converting the first optical signals from the original color gamut to the target color gamut displayed by the display screen to obtain second optical signals; the second conversion unit is used for converting each second optical signal into a second electric signal to obtain a plurality of second electric signals; the processing unit is used for carrying out image processing on the images corresponding to the plurality of second electric signals to obtain a third electric signal; and the control unit is used for controlling the display screen to display based on the third electric signal.

According to another aspect of embodiments of the present invention, there is also provided a computer-readable storage medium. The computer readable storage medium includes a stored program, wherein the program when executed by a processor controls a device in which the computer readable storage medium is located to execute a display method of a display screen according to an embodiment of the present invention.

According to another aspect of an embodiment of the present invention, there is also provided a processor. The processor is used for running a program, wherein the program executes the display method of the display screen in the embodiment of the invention when running.

In the embodiment, a plurality of signal sources to be displayed on a display screen are obtained, and each signal source is converted into a first optical signal from a first electrical signal to obtain a plurality of first optical signals; respectively converting the first optical signals from an original color gamut to a target color gamut displayed by a display screen to obtain second optical signals; converting each second optical signal into a second electrical signal to obtain a plurality of second electrical signals; performing image processing on the images corresponding to the second electric signals to obtain a third electric signal; and controlling the display screen to display based on the third electric signal. That is, the embodiment performs the processes of electro-optical, photoelectric and other conversion on the multiple signal sources, realizes the conversion of the multiple signal sources into the electric signals of the unified domain, ensures that the original display intention of each signal source can be perfectly expressed on the display screen based on the unified electric signals, avoids the condition of incorrect display of the signal sources, further solves the technical problem that the display screen is difficult to correctly display the multiple signal sources, and achieves the technical effect of correctly displaying the multiple signal sources by the display screen.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

FIG. 1 is a flow chart of a display method of a display screen according to an embodiment of the present invention;

FIG. 2 is a schematic illustration of a display of another display screen according to an embodiment of the invention;

FIG. 3 is a schematic diagram of a color gamut conversion according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of data contrast after photoelectric, electro-optic conversion according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of converting an image mask according to an embodiment of the invention;

FIG. 6 is a schematic diagram of another conversion of an image mask according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of brightness compensation of an optical signal for missing data based on the values of a converted image mask in accordance with an embodiment of the present invention;

fig. 8 is a schematic view of a display device of a display screen according to an embodiment of the present invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Example 1

According to the embodiment of the invention, a display method of a display screen is provided.

The steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer executable instructions, and although a logical order is illustrated in the flowcharts, in some cases the steps illustrated or described may be performed in an order different than that herein.

Fig. 1 is a flowchart of a display method of a display screen according to an embodiment of the present invention. As shown in fig. 1, the method may include the steps of:

step S102, a plurality of signal sources to be displayed on a display screen are obtained, each signal source is converted into a first optical signal from a first electrical signal, and a plurality of first optical signals are obtained.

In the technical solution provided in step S102 of the present invention, the display screen may be a display screen applied to a broadcast playing scene, and the display screen in a large-screen display scene, for example, the display screen may be an LED display screen. The embodiment obtains a plurality of signal sources to be displayed by the display screen, wherein the signal sources are input sources, input source signals and sheet sources. Each signal source of this embodiment corresponds to an input channel from which the corresponding signal source can be derived.

Alternatively, in this embodiment, information of each signal source may be recorded, where the information may include, but is not limited to, a dynamic range of each signal source, color gamut information, white point information, and the like, where the dynamic range may record physical information of the display screen, and for example, the physical information may include, but is not limited to, a peak brightness, a black level, a display color gamut, and the like of the display screen; the configuration of the environmental parameters of the display screen may also be recorded, which may include, but are not limited to, ambient light levels, etc.

Alternatively, the multiple signal sources of this embodiment may be signal sources with different dynamic ranges, such as signal source 1, signal source 2, and signal source 3, where the dynamic range of signal source 1 is Hybrid Log-Gamma (HLG for short), the dynamic range of signal source 2 may be BT2020, the dynamic range of signal source 2 may be high dynamic range (High Dynamic Range, HDR for short) 10, the color range of signal source 2 may be BT202020, the dynamic range of signal source 3 may be GAMM2.2, and the color range of signal source 3 may be BT709.

The signal sources acquired by the embodiment can be first electric signals, each signal source can be converted into first optical signals from the first electric signals, each signal source corresponds to one first optical signal, and the plurality of signal sources can correspond to a plurality of first optical signals, so that the purpose of converting each signal source into an optical domain is achieved. The first optical signals may include optical signal values, and the plurality of first optical signals may be linear optical signals.

Step S104, converting the plurality of first optical signals from the original color gamut to the target color gamut displayed by the display screen to obtain a plurality of second optical signals.

In the technical scheme provided in the step S104, after each signal source is converted from the first electrical signal to the first optical signal to obtain a plurality of first optical signals, the plurality of first optical signals may be respectively converted from the original color gamut to the target color gamut displayed by the display screen to obtain a plurality of second optical signals.

In this embodiment, the target color gamut displayed by the display screen, that is, the color gamut that the display screen can display, may perform color gamut conversion on the plurality of first optical signals, respectively, and convert the plurality of first optical signals from the corresponding original color gamuts to the target color gamuts displayed by the display screen, so as to obtain a plurality of second optical signals, that is, optical domain signals after the color gamuts are unified, thereby achieving the purpose of converting the various original color gamuts of the various signal sources into a standard single target color gamuts.

Alternatively, the embodiment may perform direct gamut mapping and lookup table-based gamut mapping on the plurality of first optical signals, so as to convert the plurality of first optical signals from the original gamut to the target gamut, thereby obtaining a plurality of second optical signals.

It should be noted that the above-mentioned direct color gamut mapping and the color gamut mapping based on the lookup table in this embodiment are only a preferred implementation of the embodiment of the present invention, and are not limited to the above-mentioned method for converting the first optical signal from the original color gamut to the target color gamut displayed on the display screen, and any method that can achieve the conversion of the first optical signal from the original color gamut to the target color gamut displayed on the display screen is within the scope of this embodiment, which is not illustrated here.

Step S106, each second optical signal is converted into a second electrical signal, and a plurality of second electrical signals are obtained.

In the technical solution provided in the above step S106 of the present invention, after converting the plurality of first optical signals from the original color gamut to the target color gamut displayed by the display screen to obtain a plurality of second optical signals, each of the second optical signals may be converted into a second electrical signal to obtain a plurality of second electrical signals.

In this embodiment, each second optical signal may be mapped and converted (OETF) into a second electrical signal, and the optical signal value of each second optical signal may be compressed to obtain a second electrical signal, which is the compressed input source signal, so that a plurality of second optical signals may correspond to a plurality of second electrical signals.

Step S108, image processing is carried out on the images corresponding to the plurality of second electric signals, and a third electric signal is obtained.

In the technical scheme provided in the step S108, after each second optical signal is converted into a second electrical signal to obtain a plurality of second electrical signals, image processing is performed on images corresponding to the plurality of second electrical signals to obtain a third electrical signal.

In this embodiment, image processing may be performed on the images corresponding to the plurality of second electrical signals, where the image processing may include, but is not limited to, image processing technologies such as image stitching, image noise reduction, image enhancement, and so on, which may be determined according to a specific application scenario, so as to obtain a unified third electrical signal.

Step S110, controlling the display screen to display based on the third electric signal.

In the technical solution provided in the above step S110 of the present invention, after performing image processing on the images corresponding to the plurality of second electrical signals to obtain a third electrical signal, the display screen may be controlled to display based on the third electrical signal.

In this embodiment, the third electrical signal may be analyzed, so as to obtain a final optical signal value, and the display screen may be controlled to display by using the final optical signal value.

Through the steps S102 to S110, a plurality of signal sources to be displayed on the display screen are obtained, and each signal source is converted from a first electrical signal into a first optical signal, so as to obtain a plurality of first optical signals; respectively converting the first optical signals from an original color gamut to a target color gamut displayed by a display screen to obtain second optical signals; converting each second optical signal into a second electrical signal to obtain a plurality of second electrical signals; performing image processing on the images corresponding to the second electric signals to obtain a third electric signal; and controlling the display screen to display based on the third electric signal. That is, the embodiment performs the processes of electro-optical, photoelectric and other conversion on the multiple signal sources, realizes the conversion of the multiple signal sources into the electric signals of the unified domain, ensures that the original display intention of each signal source can be perfectly expressed on the display screen based on the unified electric signals, avoids the condition of incorrect display of the signal sources, further solves the technical problem that the display screen is difficult to correctly display the multiple signal sources, and achieves the technical effect of correctly displaying the multiple signal sources by the display screen.

The above-described method of this embodiment is further described below.

As an optional embodiment, step S110, controlling the display screen to display based on the third electrical signal, includes: and converting the third electric signal into a third optical signal, and controlling the display screen to display according to the third optical signal.

In this embodiment, when the display screen is controlled based on the third electrical signal, the third electrical signal may be analyzed, and converted (EOTF) into the third optical signal, and the optical signal value of the third optical signal is used to control the display screen to further display.

As an alternative embodiment, converting the third electrical signal into a third optical signal includes: converting the third electrical signal into a third optical signal according to an inverse function of the photoelectric conversion function; converting each of the second optical signals into a second electrical signal, comprising: each of the second optical signals is converted into a second electrical signal according to the same photoelectric conversion function.

In this embodiment, when the third electrical signal is converted into the third optical signal, the photoelectric conversion function may be determined, and each second optical signal after the color gamut is unified may be mapped according to the unified photoelectric conversion function, that is, the embodiment compresses optical signal values of different second optical signals with the same photoelectric conversion function to obtain the second electrical signal, so that the purpose of converting each second optical signal into the corresponding second electrical signal is achieved.

Alternatively, the embodiment may determine an inverse function of the photoelectric conversion function, and then convert the third electrical signal into the third optical signal according to the inverse function of the photoelectric conversion function, which may be that the third electrical signal is parsed according to the inverse function of the photoelectric conversion function, to obtain the final third optical signal.

As an alternative embodiment, after converting the plurality of first optical signals from the original color gamut to the target color gamut displayed by the display screen, respectively, to obtain the plurality of second optical signals, the method further includes: performing brightness compensation on at least one first target optical signal in the plurality of second optical signals; converting each of the second optical signals into a second electrical signal, comprising: each first target optical signal after brightness compensation is converted into a second electric signal.

In this embodiment, after the first electrical signal of each signal source is converted into the first optical signal through the electro-optical conversion function, a plurality of first optical signals are obtained, and the plurality of first optical signals may be linear optical signals. Because the first optical signals are sampled differently in different dynamic range compression modes, after the plurality of linear first optical signals are respectively converted from an original color gamut to a target color gamut displayed by a display screen to obtain a plurality of linear second optical signals, the situation that optical signal values in the plurality of linear second optical signals are lost may exist, that is, the analyzed optical domain signal values may have lost information, that is, the situation that at least one first target optical signal in the plurality of second optical signals has lost optical signal values, for example, the brightness information at the image position corresponding to at least one first target optical signal has lost. Alternatively, if the plurality of linear second optical signals are converted by the photoelectric conversion function, the plurality of linear second optical signals may be compressed into the same second electrical signal, so that if the plurality of linear second optical signals are converted into corresponding optical signals, the area corresponding to the plurality of continuous different linear optical signals in the image becomes the area corresponding to the same optical signal.

In order to solve the problem that the electro-optical conversion function compresses the linear optical signal, in this embodiment, brightness compensation may be performed on at least one first target optical signal in the plurality of second optical signals, and brightness information lost by the at least one first target optical signal to a corresponding image position may be compensated based on the image local area, so that each first target optical signal after brightness compensation is converted into a second electrical signal.

Alternatively, the at least one compensation value corresponding to the at least one first target optical signal may be determined by determining a gradient direction of the merging area corresponding to the at least one target optical signal, so as to predict the at least one compensation value through the gradient direction, where the at least one compensation value may be a linear optical signal value, for example, a linearly changing brightness value, so as to perform brightness compensation on the at least one first target optical signal based on the at least one compensation value.

As an alternative embodiment, performing brightness compensation on at least one first target optical signal in the plurality of second optical signals includes: sliding window processing is carried out on the plurality of second optical signals through the target template window, so that second target optical signals, at least one first target optical signal and third target optical signals, the brightness values of which are identical to those of the first target optical signals, are obtained, and the third target optical signals, which are different from the brightness values of the first target optical signals by a first target brightness value, are obtained, wherein the first target brightness value is related to the sum of the number of the second target optical signals and the number of the at least one first target optical signals; determining a target compensation value corresponding to each first target optical signal based on the brightness value of the second target optical signal and the brightness value of the third target optical signal; and carrying out brightness compensation on each first target optical signal according to the corresponding target compensation value.

In this embodiment, the target template window may be a rectangular frame, for example, a rectangular frame with 5x1 pixels, or a rectangular frame with 1x5 pixels, and the plurality of second optical signals may be subjected to a sliding window process through the target template window, where the sliding window process may be a horizontal sliding window process or a vertical sliding window process, for example, if the target template window is a rectangular frame with 5x1 pixels, the plurality of second optical signals may be subjected to a horizontal sliding window process through the target template window, so as to find a plurality of optical signals with the same luminance value that are continuous in the horizontal direction, determine the corresponding area as a horizontal merging area, record the horizontal gradient direction, and record the horizontal gradient direction in the image mask; for another example, if the target template window is a rectangular frame with 1x5 pixels, the vertical sliding window processing may be performed on the plurality of second optical signals, so as to find optical signals with luminance values of a plurality of vertically continuous identical values existing in the target template window, record the corresponding areas as vertical merging areas, record the vertical gradient directions, record in the image mask, so as to obtain a second target optical signal with luminance value identical to that of the first target optical signal, at least one first target optical signal, a third target optical signal with luminance value different from that of the first target optical signal by a first target luminance value, where the first target luminance value may be a merging degree, and may be a sum of the number of the second target optical signals and the number of the at least one first target optical signals, for example, the luminance value of at least one first target light signal is 99, the luminance value of a second target light signal is the same as the luminance value of the first target light signal, also 99, the luminance value of a third target light signal differs from the luminance value of the first target light signal by a first target luminance value, which is the sum of the number of second target light signals 1 and the number of at least one first target light signal 3, 4, the luminance value of the third target light signal is 103 (99 + 4) so that the luminance value of the second target light signal, the luminance value of the at least one first target light signal, the luminance value of the third target light signal may be sequentially arranged from left to right as 99, 103, the corresponding image masks are 0, 1.

The embodiment may determine the target compensation value corresponding to each first target optical signal based on the brightness value 99 of the second target optical signal and the brightness value 103 of the third target optical signal, and may determine the compensation value corresponding to the second 99 from left to right based on the quotient of the difference-1 between the brightness value 103 of the third target optical signal and the brightness value 99 of the second target optical signal and 3, for example, 1, then accumulate 1, determine the compensation value corresponding to the third 99 from left to right as 2, then accumulate 1, determine the compensation value corresponding to the fourth 99 as 3, and then compensate 1 for the second 99 from left to right, compensate 2 for the third 99 from left to right, compensate 3 for the fourth 99 from left to right, to obtain 99, 100, 101, 102, 103.

Alternatively, this embodiment may look for a horizontal merge region in the image masks 0, 1, starting from the second bit 0 from left to right, giving an accumulate 1 operation along the horizontal gradient direction, and setting the gradient direction endpoint to 0, the compensation values of the corresponding positions are sequentially 0, 1, 2, 3 and 0 from left to right, and are added with 99, 99 and 103 from left to right according to the corresponding positions, so that 99, 100, 101, 102 and 103 from left to right are obtained.

Alternatively, this embodiment may find a vertical merge region in the image masks 0, 1 in the vertical direction, give an accumulation 1 operation along the vertical gradient direction starting from the second position 0 from top to bottom, and set the gradient direction end point to 0, the compensation values of the corresponding positions are sequentially 0, 1, 2, 3 and 0 from top to bottom, and the compensation values are added with 99, 99 and 103 from top to bottom according to the corresponding positions to obtain 99, 100, 101, 102 and 103 from top to bottom.

As an alternative embodiment, converting the plurality of first optical signals from the original color gamut to the target color gamut displayed by the display screen to obtain a plurality of second optical signals, respectively, includes: respectively converting the first color values of the first optical signals corresponding to the original color gamut into second color values in the target color space according to a first conversion matrix of the original color gamut to obtain a plurality of second color values; converting each second color value into a third color value in the target color domain according to the same second conversion matrix to obtain a plurality of third color values; and determining the light signals corresponding to each third color value as second light signals to obtain a plurality of second light signals.

In this embodiment, when the conversion of the plurality of first optical signals from the original color gamut to the target color gamut displayed by the display screen to obtain the plurality of second optical signals is achieved, it may be that first color values corresponding to each first optical signal in the original color gamut are determined, for example, the first color values are RGB values in the color gamut a, then a first conversion matrix of each first optical signal in the original color gamut is determined, the first conversion matrix may be a 3x3 matrix, then the first color values corresponding to each first optical signal in the original color gamut are converted into second color values of the target color space according to the first conversion matrix of the original color gamut, for example, the target color space is XYZ color space, then a unified second conversion matrix is determined, the second color values corresponding to each first optical signal may be a 3x3 matrix, the second color values corresponding to each first optical signal are converted into third color values in the target color gamut according to the unified second conversion matrix, the third color values may be RGB values in the color gamut B, and then the second optical signals corresponding to each third color values are determined to obtain the plurality of second optical signals.

It should be noted that, in this embodiment, the conversion matrix is used to convert the plurality of first optical signals from the original color gamut to the target color gamut displayed on the display screen to obtain the plurality of second optical signals, which is only a preferred implementation of the embodiment of the present invention, and is not representative of the embodiment of the present invention, the conversion matrix is used only to convert the plurality of first optical signals from the original color gamut to the target color gamut displayed on the display screen to obtain the plurality of second optical signals, and any method capable of converting the plurality of first optical signals from the original color gamut to the target color gamut displayed on the display screen is within the orientation of this embodiment, which is not illustrated herein.

As an alternative embodiment, step S102, each signal source is converted from a first electrical signal into a first optical signal, including: each signal source is converted from a first electrical signal to a first optical signal according to an electro-optical conversion function.

In this embodiment, when each signal source is converted from the first electrical signal to the first optical signal, the electro-optical conversion function may be determined first, the first electrical signal may be used as input data of the electro-optical conversion function, and the electro-optical conversion (EOTF) is performed on the first electrical signal based on the electro-optical conversion function, so as to obtain the first optical signal, thereby achieving the purpose of converting each signal source from the first electrical signal to the first optical signal.

In this embodiment, there are a plurality of implementation methods in performing the electro-optical conversion on the first electric signal based on the electro-optical conversion function. Alternatively, for the signal source of the HLG, the embodiment may use an electro-optical conversion function corresponding to the EOTF curve of the HLG to perform electro-optical conversion on the signal source of the HLG; for the signal source of ST2086, the signal source can be analyzed according to the electro-optic conversion function corresponding to the ST2086 standard to perform electro-optic conversion; for the signal source of the HDR10Plus signal, the signal source can be analyzed according to the electro-optic conversion function corresponding to ST2094-40 to perform electro-optic conversion; for the signal source of the Dolby Vision signal, it can be resolved according to the electro-optical conversion function corresponding to ST2094-10 to perform electro-optical conversion. For the signal source of SDR, it can analyze it according to the electro-optic conversion function corresponding to the GAMMA curve to make electro-optic conversion.

As an alternative embodiment, the method further comprises: determining a target format for each signal source; converting each signal source from a first electrical signal to a first optical signal according to an electro-optic conversion function, comprising: and converting the first electric signal of each signal source into a first optical signal according to an electro-optical conversion function corresponding to the target format.

In this embodiment, for a plurality of signal sources, a target format of each signal source may be determined, and the target table format, that is, the input source format, may determine an electro-optical conversion function corresponding to the target format of each signal source, and optionally, the electro-optical conversion functions corresponding to different signal sources in this embodiment are different, so as to convert the first electrical signal of each signal source into the first optical signal according to the electro-optical conversion function corresponding to the target format.

In this embodiment, different signal conversion modes are selected according to the dynamic ranges and color gamuts of different signal sources, so that electro-optical conversion, photoelectric conversion and the like can be performed on multiple signal sources, an electric signal in a unified domain is obtained, various image processing technologies are performed on the electric signal, and unified electro-optical conversion is performed on the electric signal, so that the original display intention of each signal source can be perfectly expressed on a display screen, and the condition that analysis and display of the signal sources are incorrect does not exist. Meanwhile, the embodiment can automatically identify the information of the display screen, and map the brightness range of the display screen into the display brightness capability of the display screen so as to ensure that the display screen has the best display effect on the signal source.

According to the embodiment, for signal sources with multiple target formats, when the signal sources are required to be displayed on the display screen of the same scene, the embodiment can display various target formats according to the accurate effect through the method, and the phenomenon that some input display is abnormal does not exist. And for products with splicing requirements of various signal sources, the embodiment can ensure that the spliced image has the same display effect as the input source intention through the method.

Example 2

The above-described method of this embodiment is further described below.

With the rapid development of the HDR technology, the application of the HDR technology is also becoming wider and wider in the field of LED screen display. The mainstream HDR formats include a perceptual quantization curve (Perceptual Quantizer, abbreviated as PQ), HDR10Plus, dolby Vision mapped by the PQ curve, and a mixed logarithmic Gamma Hybrid Log-Gamma, abbreviated as HLG, based on television broadcasting. In broadcast playing and LED large screen display application, the situation that signal sources with different formats need to be spliced is often encountered. At this time, a better solution is needed, and the related content can be correctly displayed after the signal sources with different dynamic ranges and different color gamut formats are spliced.

However, in the related art, there is a lack of a unified solution for signal sources of different dynamic ranges and different color gamut formats to achieve correct display of the display screen. The embodiment can utilize unified electro-optic- > photoelectric conversion processes to convert signals of the signal sources with different dynamic ranges and color gamuts to obtain unified electric signals, and perform unified electro-optic conversion on the electric signals, so that the original display intention of each signal source can be perfectly expressed on a display screen, and the condition that the analysis display of the input source is incorrect does not exist. Meanwhile, the embodiment can automatically identify the information of the display screen, map the brightness range of the signal source into the display brightness capability of the display screen, and ensure the optimal display effect of the display screen on the signal source.

The above-described method of this embodiment is described by way of example.

Fig. 2 is a schematic illustration of a display of another display screen according to an embodiment of the invention. As shown in fig. 2, the embodiment may record information of each signal source, for example, the signal sources may be an input source 1, an input source 2 and an input source 3; physical information of the display screen, which may include, but is not limited to, peak brightness of the display screen, black level, display color gamut, etc.; environmental parameter configurations of the display screen, which may include, but are not limited to, ambient light level, etc.; each input channel can convert the electric signal of the signal source into the optical domain by utilizing the corresponding electro-optical conversion function according to the corresponding signal source format to obtain the optical domain signal.

Optionally, the dynamic range of the input source 1 in this embodiment may be HLG, the color gamut is BT2020, and hlg_eotf conversion is performed on the dynamic range to obtain an input source 1 optical signal; the dynamic range of the input source 2 can be HDR10, the color gamut can be BT2020, and HDR10_EOTF conversion is carried out on the dynamic range to obtain an input source 2 optical signal; the dynamic range of the input source 3 may be GAMMA2.2, the color gamut BT709, and GAMMA2.2_eotf conversion is performed to obtain the input source 3 optical signal, etc.

Optionally, there are a variety of EOTF transforms that may be employed by this embodiment, for example, for the signal source of HLG, the EOTF curve of HLG may be employed; for the signal source of ST2086, analysis can be performed according to the ST2086 standard; for a signal source of HDR10Plus, the parsing can be performed as in ST 2094-40; for the Dolby Vision signal, the analysis can be performed according to ST 2094-10; the input signal of the SDR can be analyzed according to the corresponding GAMMA curve.

The embodiment can perform color gamut conversion on the analyzed optical signal according to the color gamut which can be displayed by the display screen, and convert the analyzed optical signal into the color gamut which can be displayed by the display screen. The methods employed may include, but are not limited to, direct gamut mapping and look-up table based gamut mapping.

In this embodiment, brightness compensation can be performed on the light domain signal after the color gamut is unified. Because the sampling of the optical domain signal is different in different dynamic range compression modes, the resolved optical domain signal value has lost (brightness) information. This embodiment may employ a luminance compensation technique to compensate for lost luminance information of the corresponding location based on the local area of the image.

Alternatively, this embodiment may map (OETF) the optical domain signals after color gamut unification with a unified photoelectric conversion function, i.e., compress the optical signal values of different signal sources with the same photoelectric conversion function.

The embodiment may perform various image signal processing techniques on each compressed electrical signal, and may include, but is not limited to, image stitching, image noise reduction, image enhancement, and the like.

In this embodiment, the signal after image processing may be resolved (EOTF) using an inverse function of a photoelectric conversion function, so as to obtain a final optical signal value, and then the optical signal value is displayed through a display screen.

The above-described method of this embodiment is further described below.

Fig. 3 is a schematic diagram of a color gamut conversion according to an embodiment of the present invention. As shown in fig. 3, the color gamut conversion is to convert the input signal of the signal source from the input signal of the corresponding various color gamuts a to a standard single color gamuts B output signal. The method employed by this embodiment may include, but is not limited to, directly converting the gamut a input signal to XYZ color space using the 3x3 conversion matrix of the current gamut a (BT 709/BT 2020) to XYZ, and further converting XYZ color space values to the corresponding gamut B output signal using the unified 3x3 conversion matrix of XYZ color space to gamut B.

In this embodiment, in order to solve the problem of compressing the linear optical signal by the electro-optical conversion function of HDR, the compressed and combined linear optical signal is subjected to prediction expansion processing by the image local information after the electric signal of the signal source passes through the electro-optical conversion function. In addition, since the photoelectric conversion function causes a case where a plurality of linear optical signals are compressed into one electric signal, a case where a region which is a continuous plurality of different linear optical signals becomes the same optical signal occurs in an image, and as shown in fig. 4, the second, third and fourth columns of data on the right side appear the same 99, and the data on the second, third and fourth columns of data on the left side are linearly changed. Fig. 4 is a schematic diagram of data comparison after photoelectric conversion and electro-optical conversion according to an embodiment of the present invention.

Therefore, in the case where the missing data occurs in the second column, the third column, and the fourth column, the embodiment can predict the missing linear optical signal information by determining the merge region and determining the gradient direction of the merge region and performing the accumulation 1 operation in the gradient direction.

Optionally, after performing gamut conversion on the parsed optical signal according to the gamut that can be displayed by the display screen and converting the parsed optical signal into the gamut that can be displayed by the display screen, the embodiment may perform horizontal sliding window by using a template window (rectangular frame of 5x1 pixels), first find that there are a plurality of luminance values that are horizontally continuous and identical in the template window, and that there are luminance values (e.g., 103) that differ from the identical value (e.g., 99) by one merging gray (e.g., 4) on the left or right of the template window, record the region as a horizontal merging region, calculate the horizontal gradient direction, and record in the image mask.

Alternatively, this embodiment may perform vertical sliding window using a template window (rectangular frame of 1×5 pixels), first find that there are a plurality of vertically consecutive identical luminance values in the template window, and that there is a luminance value (e.g., 103) differing from the identical value (e.g., 99) by one merging gray (e.g., 4) at the upper or lower side of the window, then mark the area as a vertical merging area, calculate the vertical gradient direction, and record in the image mask.

Fig. 5 is a schematic diagram of converting an image mask according to an embodiment of the present invention. As shown in fig. 5, the left side is the value of the image mask corresponding to the right side of fig. 4, a horizontal merge area may be found in the image mask, an add-up 1 operation is given along the horizontal gradient direction, and the gradient direction end point is set to 0, for example, the first column is 0, the second column is 1, the third column is 2, the fourth column is 3, and the fifth column is 0.

Fig. 6 is a schematic diagram of another conversion of an image mask according to an embodiment of the present invention. As shown in fig. 6, a vertical merge region may be found in the image mask, and an add-up 1 operation is given along the vertical gradient direction, and the gradient direction end point is set to 0, for example, the first row is 0, the second row is 1, the third row is 2, the fourth row is 3, and the fifth row is 0.

Fig. 7 is a schematic diagram of brightness compensation of an optical signal of missing data based on the values of a converted image mask according to an embodiment of the present invention. As shown in fig. 7, the same 99 appearing in the second, third and fourth columns of the data on the right side of fig. 4 can be compensated for the values of the converted mask image shown in fig. 5 to obtain the optical signal values of the missing data on the left side of fig. 4.

In this embodiment, for signal sources with multiple formats, when the signal sources need to be displayed on the display screen of the same scene, the embodiment can enable each format to be displayed according to an accurate effect, and no phenomenon that some input is abnormally displayed exists. And for products with various display sources and splicing requirements, the embodiment can ensure that the spliced image has the same display effect as the signal source intention.

The embodiment can use a unified electro-optic- > photoelectric conversion flow to convert input signals of different dynamic ranges and color gamuts to obtain unified electric signals, and perform unified electro-optic conversion on the electric signals, so that the original display intention of each limited number source can be perfectly expressed on a display screen, and the condition that the analysis and the display of the signal sources are incorrect does not exist. Meanwhile, the embodiment can automatically identify the information of the display screen, map the brightness range of the signal source into the display brightness capability of the display screen, and ensure the optimal display effect of the display screen on the signal source.

Further, in this embodiment, different signal conversion modes are selected according to the dynamic ranges and color gamuts of different signal sources, the electrical signals are converted into optical signals, the obtained optical signals are compressed by the same photoelectric compression method, various image processing technologies are performed on the compressed electrical signals, and finally the compressed electrical signals are decompressed by the corresponding photoelectric compression method and sent to a display screen for correct display. Among them, in electro-optic- > photoelectric conversion, the transformation of the color gamut is involved, which may include, but is not limited to, implementation by using a transformation matrix. Meanwhile, the embodiment can automatically identify the information of the display screen, and the photoelectric- > electro-optical mapping method is designed by utilizing the information of the display screen, so that the brightness range of the signal source is mapped into the display brightness range of the display screen, and the optimal display effect of the screen on the signal source is ensured.

Example 3

The embodiment of the invention also provides a display device of the display screen. It should be noted that the display device of the display screen of this embodiment may be used to execute the display method of the display screen of the embodiment of the present invention.

Fig. 8 is a schematic view of a display device of a display screen according to an embodiment of the present invention. As shown in fig. 8, the display device 80 of the display screen may include: an acquisition unit 81, a first conversion unit 82, a second conversion unit 83, a processing unit 84, and a control unit 85.

The obtaining unit 81 is configured to obtain a plurality of signal sources to be displayed on the display screen, and convert each signal source from a first electrical signal to a first optical signal, so as to obtain a plurality of first optical signals.

The first conversion unit 82 is configured to convert the plurality of first optical signals from the original color gamut to a target color gamut displayed on the display screen, to obtain a plurality of second optical signals.

The second conversion unit 83 is configured to convert each of the second optical signals into a second electrical signal, so as to obtain a plurality of second electrical signals.

The processing unit 84 is configured to perform image processing on images corresponding to the plurality of second electrical signals, so as to obtain a third electrical signal.

And a control unit 85 for controlling the display screen to display based on the third electric signal.

Optionally, the control unit 85 includes: the first conversion module is used for converting the third electric signal into a third optical signal and controlling the display screen to display according to the third optical signal.

Optionally, the conversion module includes: the first conversion sub-module is used for converting the third electric signal into a third optical signal according to the inverse function of the photoelectric conversion function; the second conversion unit 83 includes: and the second conversion module is used for converting each second optical signal into a second electric signal according to the same photoelectric conversion function.

Optionally, the apparatus may include: the compensation unit is used for performing brightness compensation on at least one first target optical signal in the plurality of second optical signals after converting the plurality of first optical signals from an original color gamut to a target color gamut displayed by the display screen to obtain the plurality of second optical signals; the second conversion unit 83 includes: and the third conversion module is used for converting each first target optical signal after brightness compensation into a second electric signal.

Optionally, the compensation unit includes: the sliding window processing module is used for carrying out sliding window processing on the plurality of second optical signals through the target template window to obtain a second target optical signal with the brightness value identical to that of the first target optical signal, at least one first target optical signal and a third target optical signal which is different from the brightness value of the first target optical signal by a first target brightness value, wherein the first target brightness value is related to the sum of the number of the second target optical signals and the number of the at least one first target optical signal; the first determining module is used for determining a target compensation value corresponding to each first target optical signal based on the brightness value of the second target optical signal and the brightness value of the third target optical signal; and the compensation module is used for carrying out brightness compensation on each first target optical signal according to the corresponding target compensation value.

Optionally, the first conversion unit 82 includes: the fourth conversion module is used for respectively converting the first color values of the plurality of first optical signals in the original color gamut into the second color values in the target color space according to the first conversion matrix of the original color gamut to obtain a plurality of second color values; a fifth conversion module, configured to convert each second color value into a third color value in the target color gamut according to the same second conversion matrix, to obtain a plurality of third color values; and the second determining module is used for determining the light signals corresponding to each third color value as second light signals to obtain a plurality of second light signals.

Alternatively, the acquisition unit 81 includes: and the sixth conversion module is used for converting each signal source from the first electric signal into the first optical signal according to the electro-optical conversion function.

Optionally, the apparatus further comprises: a determining unit for determining a target format of each signal source; the sixth conversion module includes: and the second conversion sub-module is used for converting the first electric signal of each signal source into a first optical signal according to an electro-optical conversion function corresponding to the target format.

In the display device of the display screen of this embodiment, a plurality of signal sources to be displayed by the display screen are acquired by the acquisition unit 81, and each signal source is converted from a first electrical signal into a first optical signal, resulting in a plurality of first optical signals. The first conversion unit 82 converts the plurality of first optical signals from the original color gamut to the target color gamut displayed on the display screen, so as to obtain a plurality of second optical signals, the second conversion unit 83 converts each of the second optical signals into a second electrical signal, so as to obtain a plurality of second electrical signals, the processing unit 84 performs image processing on images corresponding to the plurality of second electrical signals, so as to obtain a third electrical signal, and the control unit 85 controls the display screen to display based on the third electrical signal. That is, the embodiment performs the processes of electro-optical, photoelectric and other conversion on the multiple signal sources, realizes the conversion of the multiple signal sources into the electric signals of the unified domain, ensures that the original display intention of each signal source can be perfectly expressed on the display screen based on the unified electric signals, avoids the condition of incorrect display of the signal sources, further solves the technical problem that the display screen is difficult to correctly display the multiple signal sources, and achieves the technical effect of correctly displaying the multiple signal sources by the display screen.

Example 4

According to an embodiment of the present invention, there is also provided a computer-readable storage medium. The computer readable storage medium includes a stored program, wherein the program when executed by a processor controls a device in which the computer readable storage medium is located to execute a display method of a display screen according to an embodiment of the present invention.

Example 5

According to the embodiment of the invention, a processor is also provided, and the processor is used for running a program, wherein the display method of the display screen of the embodiment of the invention is executed when the program runs.

The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.

In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.

In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with respect to each other may be an indirect coupling or communication connection via some interfaces, units or models, or may be in electrical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit 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 may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims (11)

1. A display method of a display screen, comprising:

acquiring a plurality of signal sources to be displayed of a display screen, and converting each signal source from a first electric signal into a first optical signal to obtain a plurality of first optical signals;

respectively converting the first optical signals from an original color gamut to a target color gamut displayed by the display screen to obtain second optical signals;

converting each second optical signal into a second electrical signal to obtain a plurality of second electrical signals;

performing image processing on the images corresponding to the second electric signals to obtain a third electric signal;

and controlling the display screen to display based on the third electric signal.

2. The method of claim 1, wherein controlling the display screen display based on the third electrical signal comprises:

and converting the third electric signal into a third optical signal, and controlling the display screen to display according to the third optical signal.

3. The method of claim 2, wherein the step of determining the position of the substrate comprises,

converting the third electrical signal into a third optical signal, comprising: converting the third electrical signal into the third optical signal according to an inverse function of a photoelectric conversion function;

converting each of the second optical signals into a second electrical signal, comprising: and converting each second optical signal into the second electric signal according to the same photoelectric conversion function.

4. The method of claim 1, wherein the step of determining the position of the substrate comprises,

after converting the plurality of first optical signals from the original color gamut to the target color gamut displayed by the display screen to obtain a plurality of second optical signals, the method further includes: performing brightness compensation on at least one first target optical signal in the second optical signals;

converting each of the second optical signals into a second electrical signal, comprising: and converting each first target optical signal subjected to brightness compensation into the second electric signal.

5. The method of claim 4, wherein brightness compensating at least one first target optical signal of the plurality of second optical signals comprises:

sliding window processing is carried out on the plurality of second optical signals through a target template window, so that a second target optical signal with the same brightness value as that of the first target optical signal, at least one first target optical signal and a third target optical signal with the brightness value different from that of the first target optical signal by a first target brightness value are obtained, wherein the first target brightness value is related to the sum of the number of the second target optical signals and the number of at least one first target optical signal;

Determining a target compensation value corresponding to each first target optical signal based on the brightness value of the second target optical signal and the brightness value of the third target optical signal;

and carrying out brightness compensation on the brightness value of each first target optical signal according to the corresponding target compensation value.

6. The method of claim 1, wherein converting the plurality of first optical signals from the original color gamut to the target color gamut displayed by the display screen to obtain the plurality of second optical signals, respectively, comprises:

respectively converting a plurality of first color values corresponding to the first optical signals in the original color gamut into second color values in a target color space according to a first conversion matrix of the original color gamut to obtain a plurality of second color values;

converting each second color value into a third color value in the target color domain according to the same second conversion matrix to obtain a plurality of third color values;

and determining the optical signal corresponding to each third color value as the second optical signal, and obtaining a plurality of second optical signals.

7. The method of claim 1, wherein converting each of the signal sources from a first electrical signal to a first optical signal comprises:

Each of the signal sources is converted from the first electrical signal to the first optical signal according to an electro-optical conversion function.

8. The method of claim 1, wherein the step of determining the position of the substrate comprises,

the method further comprises the steps of: determining a target format of each signal source;

converting each of said signal sources from said first electrical signal to said first optical signal according to an electro-optic transfer function, comprising: and converting the first electric signals of each signal source into the first optical signals according to the electro-optical conversion function corresponding to the target format.

9. A display device of a display screen, comprising:

the display screen comprises an acquisition unit, a display unit and a control unit, wherein the acquisition unit is used for acquiring a plurality of signal sources to be displayed on the display screen, and converting each signal source from a first electric signal into a first optical signal to obtain a plurality of first optical signals;

the first conversion unit is used for respectively converting the plurality of first optical signals from an original color gamut to a target color gamut displayed by the display screen to obtain a plurality of second optical signals;

the second conversion unit is used for converting each second optical signal into a second electric signal to obtain a plurality of second electric signals;

the processing unit is used for carrying out image processing on the images corresponding to the plurality of second electric signals to obtain a third electric signal;

And the control unit is used for controlling the display screen to display based on the third electric signal.

10. A computer readable storage medium, characterized in that the computer readable storage medium comprises a stored program, wherein the program, when run by a processor, controls a device in which the computer readable storage medium is located to perform the method of any one of claims 1-8.

11. A processor for running a program, wherein the program when run performs the method of any one of claims 1-8.