CN115909958B - Display control method and device of spherical dynamic display screen and display screen - Google Patents
Display control method and device of spherical dynamic display screen and display screen Download PDFInfo
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Abstract
The present invention relates to the field of screen display technologies, and in particular, to a display control method and apparatus for a spherical dynamic display screen, and a display screen. The method of the invention comprises the following steps: acquiring the distance between adjacent sub-display screens in a separated state; judging whether the distance between adjacent sub-display screens is smaller than a first threshold value; if not, keeping the current display mode, if so, entering a folding transition display mode; if the folding transition display mode is entered, the current brightness of each pixel of the sub display screen is obtained; and dynamically adjusting the brightness of each pixel of the sub-display screen according to the combination position of each sub-display screen, the real-time distance between adjacent display screens and the current brightness of each pixel of the sub-display screen. The invention can eliminate dark lines caused by the combination of gaps in the gathering process of the dynamic display screen.
Description
Technical Field
The present invention relates to the field of screen display technologies, and in particular, to a display control method and apparatus for a spherical dynamic display screen, and a display screen.
Background
Because the display area of a single LED display screen is limited, and the large-area LED display screen has high cost, large manufacturing difficulty and difficult transportation, a plurality of LED display screens with smaller areas are often combined into an LED display screen with larger area for use on the use site. For example, a display screen and a display device, which combine at least two display panels, are disclosed in patent document CN 113990211B. However, in large stage application scenes such as a concert, the combined LED display screen has a larger display area, but the display screen is always in a static state, lacks dynamic change and cannot interact with elements such as music, display images, lamplight and the like in the stage scene. In this regard, a dynamic display screen technology may be adopted in a large stage scene, so that a plurality of LED display screens may be moved according to the needs of stage performance effects, so as to form different display screen shapes, for example, a gathered sphere, a petal shape that is blooming, etc., and different types of images may be displayed in different shapes, for example, a complete image may be displayed in a completely gathered state or a near gathered state, and divided images may be displayed in separate states, respectively. However, when the LED display screen displays a complete image in a state of being gathered, a small amount of gaps exist between two adjacent display screens, so that obvious dark stripes appear between the two adjacent display screens in the overall visual effect. Although the light bar is adopted in the patent document with publication number CN113990211B to fill the gap between two display screens, so as to eliminate the black bar generated by the gap, since the size of the gap between two adjacent display screens is always changed in the process of continuously gathering the LED display screens, and the width of the light bar cannot be changed rapidly, the problem that the dark bar is generated by combining the dynamic display screens with the gap cannot be solved by the scheme.
Disclosure of Invention
In view of the above, the embodiments of the present invention provide a display control method and apparatus for a spherical dynamic display screen, and a display screen, which are used for solving the technical problem that the existing dynamic display screen cannot eliminate dark lines caused by a combination gap in the gathering process of the dynamic display screen.
The technical scheme adopted by the invention is as follows:
in a first aspect, the present invention provides a display control method for a spherical dynamic display screen, the spherical dynamic display screen including a plurality of sub-display screens which can be separated from each other and can be combined into a sphere after being folded, the method comprising the steps of:
acquiring the distance between adjacent sub-display screens in a separated state;
judging whether the distance between adjacent sub-display screens is smaller than a first threshold value;
if not, keeping the current display mode, if so, entering a folding transition display mode;
if the folding transition display mode is entered, the current brightness of each pixel of the sub display screen is obtained;
and dynamically adjusting the brightness of each pixel of the sub-display screen according to the combination position of each sub-display screen, the real-time distance between adjacent display screens and the current brightness of each pixel of the sub-display screen.
Preferably, the dynamically adjusting the brightness of each pixel of the sub-display screen according to the combination position of each sub-display screen, the real-time distance between adjacent display screens and the current brightness of each pixel of the sub-display screen further comprises the following steps:
Acquiring a column of pixels closest to the combination position as a first target pixel according to the combination position of each sub-display screen;
acquiring the current brightness of a first target pixel;
adjusting the brightness of the first target pixel according to the current brightness of the first target pixel and the real-time interval between adjacent display screens;
acquiring brightness change amounts of all first target pixels before and after brightness adjustment;
and adjusting the brightness of pixels around each first target pixel according to the brightness change amount of each first target pixel.
Preferably, the adjusting the brightness of the pixels around each first target pixel according to the brightness change amount of each first target pixel further includes the steps of:
acquiring the position of each first target pixel;
determining the direction of pixel brightness adjustment of each first target pixel according to the position and brightness change amount of each first target pixel;
for each first target pixel:
determining a plurality of pixels around the pixel as second target pixels corresponding to the pixel according to the direction of the brightness adjustment of the pixel and the brightness change quantity of the pixel;
acquiring the brightness balance of the pixel according to the brightness change amount of the pixel;
the brightness balance quantity of the pixel is distributed to each second target pixel corresponding to the pixel;
And adjusting the brightness of each second target pixel according to the brightness balance amount allocated by each second target pixel.
Preferably, the step of distributing the luminance balance of the pixel to each second target pixel corresponding to the pixel further comprises the steps of:
determining the brightness balance amount allocation proportion of each second target pixel according to the brightness balance amount and the brightness adjustment direction;
and determining the brightness balance amount allocated to each second target pixel according to the brightness balance amount and the brightness balance amount allocation proportion.
Preferably, the determining the direction of the pixel brightness adjustment of each first target pixel according to the position and the brightness change amount of each first target pixel further includes the steps of:
acquiring a second threshold value and a third threshold value;
if the brightness change amount of the pixel is less than or equal to the second threshold value, the number of the pixel brightness adjustment directions of the pixel is 1;
the number of pixel brightness adjustment directions of a pixel is 2 if the brightness change amount of the pixel is greater than the second threshold value and less than or equal to the third threshold value;
the number of pixel brightness adjustment directions of the pixel is 3 if the brightness change amount of the pixel is greater than the third threshold.
Preferably, the determining the direction of the pixel brightness adjustment of each first target pixel according to the position and the brightness change amount of each first target pixel further includes the steps of:
Dividing the sub-display screen into a middle area, a top area and a bottom area;
acquiring a first target pixel belonging to a middle area as a middle pixel according to the position of the first target pixel, acquiring a first target pixel belonging to a top area as a top pixel, and acquiring a first target pixel belonging to a bottom area as a bottom pixel;
if the number of the brightness adjustment directions of the top pixels is less than 2, the brightness adjustment directions are directions close to the top of the sub display screen; if the number of the brightness adjustment directions of the top pixels is more than or equal to 2, selecting a direction close to the top of the sub-display screen as a main direction, and the other directions as auxiliary directions;
if the number of the brightness adjustment directions of the bottom pixels is less than 2, the brightness adjustment directions are directions close to the bottoms of the sub-display screens; if the number of the bottom pixel brightness adjustment directions is more than or equal to 2, selecting a direction close to the bottom of the sub display screen as a main direction, and the other directions as auxiliary directions;
in determining the luminance balance amount allocation ratio of each second target pixel according to the luminance change amount and the luminance adjustment direction, the allocation ratio of a plurality of second target pixels in the same column to the second target pixel in the main direction is made larger than the allocation ratio of the second target pixels in the sub direction.
Preferably, the determining the direction of the pixel brightness adjustment of each first target pixel according to the position and the brightness change amount of each first target pixel further includes the steps of:
acquiring the number of pixel brightness adjustment directions of each middle pixel;
obtaining the total number m of the pixel brightness adjustment directions of the middle pixels according to the number of the pixel brightness adjustment directions of each middle pixel, wherein m is a natural number;
generating a random number sequence with m elements, wherein the element value of each element randomly takes one value of 1, 2 and 3;
distributing element values of m elements of the random number sequence to each middle pixel in sequence;
and determining the brightness adjustment direction of each middle pixel according to the distributed element values and the corresponding relation between the element values and the brightness adjustment directions of the pixels, wherein the element value 1 corresponds to the first direction, the element value 2 corresponds to the second direction, and the element value 3 corresponds to the third direction.
Preferably, the method further comprises the steps of:
acquiring a fourth threshold value;
for each second target pixel, judging whether the absolute value of the brightness balance amount allocated by the second target pixel is larger than a fourth threshold value;
If the brightness adjustment quantity is the difference value between the absolute value of the brightness adjustment quantity allocated by the second target pixel and the fourth threshold value, acquiring the adjustment direction of the second target pixel as a target adjustment direction;
determining the number of the second target pixels to be increased according to the difference value between the absolute value of the brightness adjustment quantity allocated to the second target pixels and the fourth threshold value;
the number of the second target pixels which are increased according to the requirement is increased by a plurality of second target pixels along the target adjustment direction:
the amount of luminance balance allocated to the second target pixel is re-determined and the increased amount of luminance balance allocated to the second target pixel is determined.
The present invention also provides a display control device of a spherical dynamic display screen, the device comprising:
the interval acquisition module acquires the interval between the adjacent sub-display screens in a separated state;
the interval judging module is used for judging whether the interval between the adjacent sub-display screens is smaller than a first threshold value or not;
the folding transition display module is used for entering a folding transition display mode if the current display mode is kept, otherwise;
The current brightness acquisition module is used for acquiring the current brightness of each pixel of the sub display screen if the display mode enters a folding transition display mode;
and the pixel brightness adjusting module is used for dynamically adjusting the brightness of each pixel of the sub-display screen according to the combination position of each sub-display screen, the real-time distance between adjacent display screens and the current brightness of each pixel of the sub-display screen.
In a third aspect, the present invention also provides a spherical dynamic display screen, including: the control circuit is used for controlling the sub-display screen driving mechanism to control the sub-display screens to be mutually separated or folded and then combined into a spherical display screen, and the control circuit comprises at least one processor, at least one memory and computer program instructions stored in the memory, and when the computer program instructions are executed by the processor, the method of the first aspect is realized.
The beneficial effects are that: according to the display control method and device for the spherical dynamic display screen and the display screen, on one hand, the brightness of at least one part of pixels related to the combination positions in each sub display screen on the ground sound area array is utilized, and the dark fringes generated at the gaps of the combination positions are lightened or eliminated by utilizing the brightness adjustment.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described, and it is within the scope of the present invention to obtain other drawings according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a display control method of a spherical dynamic display screen of the present invention;
FIG. 2 is a schematic three-dimensional view of the spherical dynamic display screen of the present invention in a fully closed state;
FIG. 3 is a schematic three-dimensional structure of the spherical dynamic display screen of the present invention in a separated state;
FIG. 4 is a schematic three-dimensional structure of the spherical dynamic display screen in a closed transition state;
FIG. 5 is a flow chart diagram of a method of adjusting the brightness of individual pixels of a sub-display in accordance with the present invention;
FIG. 6 is a schematic diagram of a combination position of the sub-display of the present invention;
FIG. 7 is a schematic diagram of a first target pixel approaching a bonding location according to the present invention;
FIG. 8 is a flowchart illustrating a method for adjusting brightness of pixels surrounding a first target pixel according to the present invention;
FIG. 9 is a schematic diagram of three brightness adjustment directions according to the present invention;
FIG. 10 is a flow chart of a method of distributing the brightness balance to the second target pixel according to the present invention;
FIG. 11 is a flow chart of a method of determining the number of adjustment directions according to the present invention;
FIG. 12 is a schematic view of adjusting the brightness of a second target pixel along a first direction according to the present invention;
FIG. 13 is a schematic view illustrating adjusting the brightness of a second target pixel along a second direction according to the present invention;
FIG. 14 is a schematic view illustrating adjusting the brightness of a second target pixel along a third direction according to the present invention;
FIG. 15 is a flow chart illustrating a method for adjusting the brightness of a second target pixel according to the present invention;
FIG. 16 is a schematic diagram of a sub-display divided into three regions in accordance with the present invention;
FIG. 17 is a schematic diagram of the invention in which the primary and secondary directions share the amount of brightness balance;
FIG. 18 is a flow chart of a method for randomly determining brightness adjustment direction for pixels in a middle region according to the present invention;
FIG. 19 is a flow chart of a method for adjusting the amount of luminance balance of the second target pixel;
FIG. 20 is a graph showing a distribution of second target pixels before adjustment of the luminance balance of the second target pixels according to the present invention;
FIG. 21 is a graph showing a distribution of second target pixels after adjustment of the luminance balance of the second target pixels according to the present invention;
FIG. 22 is a schematic diagram of a display control device of a spherical dynamic display screen according to the present application;
fig. 23 is a schematic hardware structure of the spherical dynamic display screen of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element. If not conflicting, the embodiments of the present application and the features of the embodiments may be combined with each other, which are all within the protection scope of the present application.
Example 1
As shown in fig. 1, the present embodiment provides a display control method of a spherical dynamic display screen, the spherical dynamic display screen includes a plurality of sub display screens 2 which can be separated from each other and can be combined into a sphere after being folded, the method includes the steps of:
s1: acquiring the distance between adjacent sub-display screens 2 in a separated state;
the state of the spherical dynamic display screen in this embodiment changes dynamically, and this embodiment can divide the spherical dynamic display screen into three states according to the space between adjacent sub-display screens 2 in the spherical dynamic display screen. As shown in fig. 2, in the first state of the spherical dynamic display screen, each sub display screen 2 is completely gathered and combined, and there is no gap between adjacent display screens, so that a complete image can be displayed at an angle of 360 degrees by using the spherical screen obtained by completely gathering and combining. For ease of description, this state of the spherical dynamic display screen is also referred to herein as the fully closed state. The second state of the spherical dynamic display is, as shown in fig. 3, that the sub-displays 2 are separated by a large distance, and this image will give a noticeable split if a complete image is still displayed, because the sub-displays 2 are separated by a large distance, and thus, for convenience of description, the spherical dynamic display is also referred to herein as a separated state. As shown in fig. 4, the third state of the spherical dynamic display screen is that the sub-display screens 2 are separated by a small distance although they are not completely folded, and thus a clear picture split feeling is not generated even if a complete image is displayed, and for convenience of description, this state of the spherical dynamic display screen is also referred to herein as a combination transition state. Since the sub-displays are driven by the driving mechanism, the distance between the sub-displays can be acquired according to the position where the driving mechanism moves. The position of the sub-display may be obtained, for example, by the angular position of the motor in the drive mechanism, or the position of a slider that moves the sub-display.
S2: judging whether the distance between the adjacent sub-display screens 2 is smaller than a first threshold value or not;
the separation state and the combination transition state of the spherical dynamic display screen are divided by the first threshold value, wherein the first threshold value can be determined empirically, and the critical distance between the adjacent sub-display screens 2 without obvious picture fracture feeling can be used as the first threshold value.
S3: if not, keeping the current display mode, if so, entering a folding transition display mode;
if the distance between the display screens is greater than or equal to the first threshold value, the spherical dynamic display screens are still in a separated state, at this time, the independent display mode of each sub display screen 2 can be kept, if the distance between the adjacent sub display screens 2 is smaller than the first threshold value, the spherical dynamic display screens are indicated to be in a combined transition state at present, at this time, a folding transition display mode can be entered, and in this mode, the spherical dynamic display screens can display a complete image in 360 degrees.
S4: if the folding transition display mode is entered, the current brightness of each pixel of the sub display screen 2 is obtained;
each sub-display 2 can be seen as being made up of a large number of pixel arrangements. The pixels are arranged in the longitudinal direction (u-direction in fig. 2) and the latitudinal direction (w-direction in fig. 2) of the folded sphere, and for convenience of description, the longitudinal direction of the folded sphere is referred to as a column of pixels, and the latitudinal direction of the folded sphere is referred to as a row of pixels. The position of each pixel on the sub-display 2 is fixed, and the position of each pixel on the sub-display 2 can be represented by the row and column in which each pixel is located, for example, the position of the pixel located in the j-th row of the i-th column can be represented as pos (i, j). One pixel can be composed of one or more light-emitting units, and the light-emitting units can adopt LED lamp beads.
When the spherical dynamic display screen works in the folding transition display mode, the brightness of each pixel on each sub-display screen 2 at the current moment needs to be obtained. Since the brightness of each pixel is determined by the current for controlling the brightness of each pixel, the brightness of each pixel on each sub-display 2 at the current moment can be obtained according to the current for controlling the brightness of each pixel. Since the brightness of each pixel is often determined by the data controlling the brightness of each pixel in the control program, the brightness of each pixel on each sub-display 2 at the current time can be obtained according to the control data of the brightness of the pixel in this step.
S5: the brightness of each pixel of the sub-display screen 2 is dynamically adjusted according to the combination position 4 of each sub-display screen 2, the real-time distance between adjacent display screens and the current brightness of each pixel of the sub-display screen 2.
The brightness of at least a part of pixels in the display screen is adjusted, and dark lines generated at the gap 3 of the combining position 4 are reduced or eliminated by utilizing the adjustment of the brightness.
As shown in fig. 5, in the present embodiment, S5: the dynamic adjustment of the brightness of each pixel of the sub-display 2 according to the combination position 4 of each sub-display 2, the real-time distance between adjacent displays and the current brightness of each pixel of the sub-display 2 further comprises the following steps:
s51: acquiring a column of pixels closest to the bonding position 4 as a first target pixel 5 according to the bonding position 4 of each sub-display 2;
as shown in fig. 6, for a sub-display 2, the combination position 4 of the sub-display 2 is the position where the edge of the sub-display 2 facing the display adjacent thereto is located. Thus, the present step may take as the first target pixel 5 the column of pixels closest to the edge of the sub-display 2 as shown in fig. 7. Since there are two sub-displays 2 adjacent to one sub-display 2, there are two bonding sites 4 of one sub-display 2, respectively, two opposite sides of the sub-display 2. One sub-display 2 thus has two columns of first target pixels 5.
S52: acquiring the current brightness of the first target pixel 5;
s53: adjusting the brightness of the first target pixel 5 according to the current brightness of the first target pixel 5 and the real-time interval between adjacent display screens;
Since the dark lines are more apparent as the distance between the adjacent display screens is farther, the brightness of the adjusted first target pixel 5 is higher as the real-time distance between the adjacent display screens is larger, and the brightness of the adjusted first target pixel 5 is lower as the real-time distance between the adjacent display screens is smaller. When the spherical dynamic display screen is in the fully-coupled state, the brightness of the first target pixel 5 is restored to a normal value. If the current brightness of the first target pixel 5 has reached the highest brightness of that pixel, the brightness of that pixel is no longer turned high. The embodiment compensates dark fringes caused by lower brightness at the position of the joint gap 3 by using the increase of the brightness of the pixel closest to the joint position 4, and changes the brightness of the pixel close to the joint position 4 along with the change of the distance, so that the display effect of the joint position 4 can keep stable in the dynamic change process of the spherical dynamic display screen.
The correspondence between the adjusted ideal luminance of the first target pixel 5 and the interval between adjacent display screens may be determined in advance through experiments. In the experiment, adjacent display screens are positioned at different intervals within the range smaller than a first threshold value, and then the brightness of a first target pixel 5 which can reduce or eliminate dark fringes at each interval is measured.
S54: acquiring the brightness change amount of each first target pixel 5 before and after brightness adjustment;
assuming that the luminance of a certain first target pixel 5 before adjustment is Lbef and the luminance of the first target pixel 5 after adjustment is left, the luminance change amount Lcha of the first target pixel 5=left-Lbef. If lch is a negative number it indicates that the luminance of the first target pixel 5 is adjusted down, and if lch is a positive number it indicates that the luminance of the first target pixel 5 is adjusted up.
S55: the brightness of the pixels around each first target pixel 5 is adjusted according to the brightness change amount of each first target pixel 5.
Adjusting the brightness of the first target pixel 5 can reduce or eliminate dark marks caused by the joint gap 3 between the two sub-display panels 2, but changes the original brightness of the displayed image, which easily causes obvious distortion of the displayed image. In this embodiment, the brightness of the pixels around the first target pixel 5 is adjusted to compensate the brightness of the first target pixel 5, and the influence caused by the brightness change of the first target pixel 5 is dispersed to other positions of the image, so that the overall brightness of the image in the local area near the joint position 4 does not obviously change, thereby reducing and eliminating the dark lines of the joint gap 3 while maintaining the original display effect of the pixel image to the maximum extent. For this, the adjustment may be performed by a distributed adjustment method in which the adjustment amounts of the luminance are distributed by a plurality of pixels around the first target pixel 5 so that the sum of the adjustment amounts of the luminance of the plurality of pixels around and the change amount of the luminance of the first target pixel 5 becomes 0.
As shown in fig. 8, in the present embodiment, the step S55: adjusting the brightness of the pixels around each first target pixel 5 according to the brightness change amount of each first target pixel 5 further includes the steps of:
s551: acquiring the position of each first target pixel 5;
the position of acquiring a certain first target pixel 5 is the row and column of the first target pixel 5 on the sub-display 2.
S552: determining the direction of pixel brightness adjustment of each first target pixel 5 according to the position and brightness change amount of each first target pixel 5;
in order to compensate the brightness loss of the image in the area near the first target pixel 5 after the brightness of the first target pixel 5 is adjusted, the embodiment compensates by using the brightness of the surrounding pixels, and distributes the brightness compensation to the surrounding different pixels along different directions, so that the brightness change of the original image is smoothly transited, and the display effect is further improved. For this step it is first determined which direction or directions the surrounding pixel brightness is adjusted. The direction of brightness adjustment refers to the direction in which a certain pixel center point around the first target pixel 5 to be adjusted is connected with the center line of the first target pixel 5, and the direction is that the first target pixel 5 points to the selected pixel. As shown in fig. 9, this embodiment defines three directions for convenience of description. The first direction d1 is a direction parallel to the latitudinal direction of the sub-display 2. The second direction d2 is a direction closer to the top of the sub-display 2 than the latitudinal direction of the sub-display 2. The third direction d3 is a direction in which the second direction is closer to the bottom of the sub-display 2 than the latitudinal direction of the sub-display 2.
In this embodiment each first target pixel 5 operates as follows:
s5531: determining a plurality of pixels around the pixel as second target pixels 6 corresponding to the pixel according to the direction of the brightness adjustment of the pixel and the brightness change amount of the pixel;
when the direction of the brightness adjustment of the pixel is determined, the pixel in the direction is selected for brightness adjustment. The second target pixels 6 are selected more if the amount of brightness change of the first target pixels 5 is large, and the second target pixels 6 are selected less if the amount of brightness change of the first target pixels 5 is small.
S5532: acquiring the brightness balance of the pixel according to the brightness change amount of the pixel;
wherein the amount of brightness balance is the opposite amount of brightness change. The brightness of the second target pixel 6 needs to be adjusted up when the brightness balance is positive, and the brightness of the second target pixel 6 needs to be adjusted down when the brightness balance is negative.
S5533: the brightness balance quantity of the pixel is distributed to each second target pixel 6 corresponding to the pixel;
in this step, the luminance balance amount is distributed, and each second target pixel 6 distributes a part of the luminance balance amount, thereby realizing reasonable diffusion of the luminance adjustment amount.
As shown in fig. 10, wherein S5533: the apportioning of the luminance balance amount of the pixel to each second target pixel 6 corresponding to the pixel further includes the steps of:
s55331: determining the luminance balance amount allocation proportion of each second target pixel 6 according to the luminance balance amount and the luminance adjustment direction;
the step first determines the allocation ratio of the brightness balance of each second target pixel 6, wherein the allocation ratio of a certain second target pixel 6 is the ratio of the brightness adjustment of the second target pixel 6 to the total brightness balance. When one first target pixel 5 has a plurality of luminance adjustment directions, the proportions of the respective luminance adjustment directions may be the same or different.
S55331: the amount of luminance balance to be allocated to each second target pixel 6 is determined based on the amount of luminance balance and the luminance balance amount allocation ratio.
In this step, the luminance balance amount is multiplied by the luminance balance amount allocation ratio of a certain second target pixel 6 to obtain the luminance balance amount allocated to the second target pixel 6.
S5534: the brightness of each second target pixel 6 is adjusted according to the amount of brightness balance allocated to each second target pixel 6.
Assuming that the luminance before adjustment of a certain second target pixel 6 is Lf and the luminance balance amount allocated to the second target pixel 6 is Lb, the luminance after adjustment of the second target pixel 6 is lf+lb.
As an alternative but advantageous implementation, as shown in fig. 11, S552 is described in this example: determining the direction of pixel brightness adjustment of each first target pixel 5 from the position and the brightness change amount of each first target pixel 5 further includes the steps of:
s5521: acquiring a second threshold value and a third threshold value;
in order to avoid that the brightness balance amount allocated in one direction is too large, so that the change of the brightness in the direction is perceived by a viewer, the embodiment divides the change of the brightness of the first target pixel 5 into three levels by using the second threshold value and the third threshold value. Assuming that the second threshold is C2 and the third threshold is C3, the maximum luminance balance allowed to be allocated in one direction is Lmax, 0.95Lmax < C2 < Lmax, and 1.8Lmax < C3 < 1.9Lmax. Wherein Lmax is empirically determined and C2 and C3 are empirically determined if the aforementioned conditions are met.
Wherein the manner of apportionment in the first direction is shown in fig. 12, the manner of apportionment in the second direction is shown in fig. 13, and the manner of apportionment in the third direction is shown in fig. 14.
S5522: if the brightness change amount of the pixel is less than or equal to the second threshold value, the number of the pixel brightness adjustment directions of the pixel is 1;
If the amount of change in brightness of the pixel is equal to or less than the second threshold value, it is indicated that the amount of change in brightness of the first target pixel 5 is small and only an apportionment of brightness adjustment in one direction is required.
S5523: the number of pixel brightness adjustment directions of a pixel is 2 if the brightness change amount of the pixel is greater than the second threshold value and less than or equal to the third threshold value;
in this case, it is indicated that the brightness change amount of the first target pixel 5 is large, and it is necessary to increase the split direction of brightness adjustment.
S5524: the number of pixel brightness adjustment directions of the pixel is 3 if the brightness change amount of the pixel is greater than the third threshold. In this case it is shown that the brightness change of the first target pixel 5 is large, and the split direction of the two brightness adjustments needs to be increased.
As an alternative but advantageous implementation, as shown in fig. 15, S552 is described in this example: determining the direction of pixel brightness adjustment of each first target pixel 5 from the position and the brightness change amount of each first target pixel 5 further includes the steps of:
s5525a: dividing the sub-display 2 into three areas, a middle area 71, a top area 72 and a bottom area 73;
as shown in fig. 16, in which the middle region 71 is the region most easily observed by the viewer, the top and bottom regions 73 of the sub-display 2, which are part of the spherical surface, are not easily observed by the viewer.
S5526a: acquiring a first target pixel 5 belonging to the middle region 71 as a middle pixel, acquiring a first target pixel 5 belonging to the top region 72 as a top pixel, and acquiring a first target pixel 5 belonging to the bottom region 73 as a bottom pixel according to the position of the first target pixel 5;
the pixels are divided into three types of pixels, namely a middle pixel, a top pixel and a bottom pixel according to the region of each pixel in the sub-display screen 2, to which the position of each pixel belongs.
S5527a: if the number of the brightness adjustment directions of the top pixels is less than 2, the brightness adjustment directions are directions close to the top of the display screen; if the number of the brightness adjustment directions of the top pixels is more than or equal to 2, selecting the direction close to the top of the sub-display screen 2 as a main direction and the other directions as auxiliary directions;
if the top pixel brightness adjustment direction is 1 direction, then the second target pixel 6 is selected for brightness balance adjustment toward the direction near the top of the sub-display 2. If the top pixel brightness adjustment direction is 2 directions, the second target pixel 6 in both directions is selected for the balance adjustment of brightness, and the direction near the top of the sub-display 2 is taken as the main direction of adjustment.
S5528a: if the number of the brightness adjustment directions of the bottom pixels is less than 2, the brightness adjustment directions are directions close to the bottom of the display screen; if the number of the bottom pixel brightness adjustment directions is more than or equal to 2, selecting a direction close to the bottom of the sub display screen 2 as a main direction, and the other directions as auxiliary directions;
If the bottom pixel brightness adjustment direction is 1 direction, then the second target pixel 6 is selected for brightness balance adjustment toward the direction near the top of the sub-display 2. If the bottom pixel brightness adjustment direction is 2 directions, the second target pixel 6 in both directions is selected for the balance adjustment of brightness, and the direction near the bottom of the sub-display 2 is taken as the main direction of adjustment.
At S55331: in determining the luminance balance amount allocation ratio of each second target pixel 6 according to the luminance change amount and the luminance adjustment direction, the allocation ratio of the second target pixels 6 located in the main direction of the plurality of second target pixels 6 located in the same column is made larger than the allocation ratio of the second target pixels 6 located in the sub direction. As shown in fig. 17, the second direction d2 is a main direction in the figure, and the first direction d1 is a sub direction. The luminance balance amount corresponding to the first target element in the figure is 10, and the allocation ratio of each second target element is shown in the figure by a number, for example, wherein the allocation ratio of the second target pixels 6 in the main direction in the plurality of second target pixels 6 in the same column is larger than the allocation ratio of the second target pixels 6 in the sub direction.
By adopting the mode, the brightness of the second target pixel 6 can be adjusted towards the direction which is not easy to be perceived by the audience at the top or the bottom of the sub-display screen 2, and the brightness adjustment quantity in the middle of the sub-display screen 2 is smaller, so that the overall effect of image display can be improved.
As an alternative but advantageous implementation, as shown in fig. 18, S552 is described in this example: determining the direction of pixel brightness adjustment of each first target pixel 5 from the position and the brightness change amount of each first target pixel 5 further includes the steps of:
s5525b: acquiring the number of pixel brightness adjustment directions of each middle pixel;
s5526b: obtaining the total number m of the pixel brightness adjustment directions of the middle pixels according to the number of the pixel brightness adjustment directions of each middle pixel, wherein m is a natural number;
setting N middle pixels in total in one sub-display screen 2, wherein the number of the pixel brightness adjustment directions of the kth middle pixel is N k Where k=1, 2 … … N, then m=n 1 +N 2 +……N n
S5527b: generating a random number sequence with m elements, wherein the element value of each element randomly takes one value of 1,2 and 3;
s5528b: distributing element values of m elements of the random number sequence to each middle pixel in sequence;
and sequentially distributing element values to each middle pixel from the top to the bottom of the sub-display, distributing 3 elements to the middle pixel if the middle pixel has 3 brightness adjustment directions, distributing 2 elements to the middle pixel if the middle pixel has 2 brightness adjustment directions, and distributing 1 element to the middle pixel if the middle pixel has 1 brightness adjustment direction.
S5529b: and determining the brightness adjustment direction of each middle pixel according to the distributed element values and the corresponding relation between the element values and the brightness adjustment directions of the pixels, wherein the element value 1 corresponds to the first direction, the element value 2 corresponds to the second direction, and the element value 3 corresponds to the third direction.
Because each element in the random number sequence is randomly selected from three values, and the element value corresponds to one of three directions, the brightness adjustment direction of each middle pixel has randomness. By adopting the method, the regular change of the brightness adjustment direction of the middle pixel can be avoided, so that the stripe display effect with obvious brightness change is caused.
As shown in fig. 19, in this embodiment, as an alternative but advantageous implementation manner, the display control method further includes the following steps:
s554: acquiring a fourth threshold value; in order to avoid that the display effect is significantly distorted due to the excessive adjustment amount of the brightness of the second target pixel 6, the present embodiment may set the fourth threshold value so that the adjustment amount of the brightness of the second target pixel 6 does not exceed the value, so as not to cause display distortion.
S555: for each second target pixel 6, determining whether the absolute value of the luminance balance amount allocated to the second target pixel 6 is greater than a fourth threshold; the second target pixels 6 with too high brightness adjustment are found out in this step by means of pixel-by-pixel comparison.
S556: if the difference value between the absolute value of the brightness adjustment quantity allocated by the second target pixel 6 and the fourth threshold value is obtained, and the adjustment direction of the second target pixel 6 is obtained as a target adjustment direction;
s557: the number of second target pixels 6 to be added is determined based on the difference between the absolute value of the luminance adjustment amount allocated to the second target pixel 6 and the fourth threshold value.
Let the absolute value of the luminance adjustment amount allocated to the second target pixel 6 be a, the fourth threshold be b, and let d= (a-b)/b, the number R of second target pixels 6 to be added be a positive integer equal to or greater than d. This ensures that the increased second target pixel 6 will further share the original amount of brightness adjustment shared by the second target pixel 6 to be smaller than the fourth threshold value.
S558: the number of second target pixels 6 that increases as needed increases along the target adjustment direction by a number of second target pixels 6: as shown in fig. 20 and 21, the distribution relationship of the second target pixels 6 in fig. 21 is obtained after adding one second target pixel 6 in each of the first direction and the second direction in fig. 20.
S559: the amount of luminance balance allocated to the second target pixel 6 is redetermined and the amount of luminance balance allocated to the increased second target pixel 6 is determined. The present step may further allocate the amount of brightness balance originally allocated to the second target pixel 6 and the increased second target pixel 6 without changing the original brightness adjustment direction, so that the amount of brightness balance allocated to the second target pixel 6 is smaller to satisfy the requirement of being smaller than the fourth threshold. After re-allocation, the absolute value of the amount of luminance balance allocated by the second target pixel 6 and the increased second target pixel 6 is smaller than the fourth threshold value.
Example 2
Referring to fig. 22, the present embodiment provides a display control device of a spherical dynamic display screen, which is characterized in that the device includes:
the interval acquisition module acquires the interval between the adjacent sub-display screens 2 in the separated state;
the interval judging module is used for judging whether the interval between the adjacent sub-display screens 2 is smaller than a first threshold value or not;
the folding transition display module is used for entering a folding transition display mode if the current display mode is kept, otherwise;
the current brightness acquisition module is used for acquiring the current brightness of each pixel of the sub display screen 2 if the display mode enters a folding transition display mode;
the pixel brightness adjusting module is used for dynamically adjusting the brightness of each pixel of the sub-display screen 2 according to the combination position 4 of each sub-display screen 2, the real-time distance between adjacent display screens and the current brightness of each pixel of the sub-display screen 2.
The pixel brightness adjustment module further includes:
a first target pixel acquiring sub-module, wherein the first target pixel 5 acquiring sub-module is configured to acquire a column of pixels closest to the combining position 4 as a first target pixel 5 according to the combining position 4 of each sub-display screen 2;
The current brightness acquisition submodule is used for acquiring the current brightness of the first target pixel 5;
the first target pixel brightness adjustment submodule is used for adjusting the brightness of the first target pixel 5 according to the current brightness of the first target pixel 5 and the real-time interval between adjacent display screens;
a brightness change amount acquisition sub-module for acquiring brightness change amounts of the respective first target pixels 5 before and after brightness adjustment;
and a peripheral pixel brightness adjustment sub-module for adjusting brightness of pixels around each first target pixel 5 according to the brightness change amount of each first target pixel 5.
Example 3
In addition, the display control method of the spherical dynamic display screen of the foregoing embodiment of the present invention described in connection with fig. 23 may be implemented by the spherical dynamic display screen of the present embodiment. Fig. 23 shows a schematic hardware structure of a spherical dynamic display screen according to an embodiment of the present invention.
The spherical dynamic display screen of this embodiment includes a plurality of sub-display screens 2, a sub-display screen driving mechanism 405 and a control circuit, where the control circuit is electrically connected with the sub-display screen driving mechanism 405 and the sub-display screen 2 respectively, and the control circuit is used to control the sub-display screen 2 driving mechanism to control the sub-display screens 2 to be separated or folded from each other and then combined into a sphere, and the control circuit includes at least one processor 401, at least one memory 402 and computer program instructions stored in the memory. The driving mechanism comprises a linear motor and a guide rail, wherein a sliding block of the linear motor moves along the guide rail, and the sliding block is connected with the bottom of the sub display screen 2.
In particular, the processor may be a Central Processing Unit (CPU), or an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or may be configured as one or more integrated circuits that implement embodiments of the present invention.
Memory 402 may include mass storage for data or instructions. By way of example, and not limitation, memory 402 may comprise a Hard Disk Drive (HDD), floppy Disk Drive, flash memory, optical Disk, magneto-optical Disk, magnetic tape, or universal serial bus (Universal Serial Bus, USB) Drive, or a combination of two or more of the foregoing. Memory 402 may include removable or non-removable (or fixed) media, where appropriate. Memory 402 may be internal or external to the data processing apparatus, where appropriate. In a particular embodiment, the memory 402 is a non-volatile solid state memory. In a particular embodiment, the memory 402 includes Read Only Memory (ROM). The ROM may be mask programmed ROM, programmable ROM (PROM), erasable PROM (EPROM), electrically Erasable PROM (EEPROM), electrically rewritable ROM (EAROM), or flash memory, or a combination of two or more of these, where appropriate.
The processor 401 implements any of the data addressing methods of the above embodiments by reading and executing computer program instructions stored in the memory 402.
The display screen of the present embodiment may also include a communication interface 403 and a bus 410 in one example. As shown in fig. 9, the control circuit 401, the memory 402, and the communication interface 403 are connected to each other via a bus 410 and perform communication with each other. The communication interface 403 is mainly used to implement communication between each module, device, unit and/or apparatus in the embodiment of the present invention. Bus 410 includes hardware, software, or both, coupling the various components for the display screen to one another. By way of example, and not limitation, the buses may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a micro channel architecture (MCa) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable bus, or a combination of two or more of the above. Bus 410 may include one or more buses, where appropriate. Although embodiments of the invention have been described and illustrated with respect to a particular bus, the invention contemplates any suitable bus or interconnect. The back of the sub-display screen is provided with a bracket for supporting the sub-display screen, and the bracket is formed by connecting a plurality of hollow aluminum alloys.
The above is a detailed description of the display control method and device of the spherical dynamic display screen and the display screen provided by the embodiment of the invention. It should be understood that the invention is not limited to the particular arrangements and instrumentality described above and shown in the drawings. For the sake of brevity, a detailed description of known methods is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present invention are not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between steps, after appreciating the spirit of the present invention.
The functional blocks shown in the above-described structural block diagrams may be implemented in hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, a plug-in, a function card, or the like. When implemented in software, the elements of the invention are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine readable medium or transmitted over transmission media or communication links by a data signal carried in a carrier wave. A "machine-readable medium" may include any medium that can store or transfer information. Examples of machine-readable media include electronic circuitry, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio Frequency (RF) links, and the like. The code segments may be downloaded via computer networks such as the internet, intranets, etc.
It should also be noted that the exemplary embodiments mentioned in this disclosure describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, or may be performed in a different order from the order in the embodiments, or several steps may be performed simultaneously.
In the foregoing, only the specific embodiments of the present invention are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present invention is not limited thereto, and any equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present invention, and they should be included in the scope of the present invention.
Claims (10)
1. The display control method of the spherical dynamic display screen, the said spherical dynamic display screen includes several can separate and can combine into a spherical sub-display screen after closing each other, characterized by that, the said method includes the following steps:
Acquiring the distance between adjacent sub-display screens in a separated state;
judging whether the distance between adjacent sub-display screens is smaller than a first threshold value;
if not, keeping the current display mode, if so, entering a folding transition display mode;
if the folding transition display mode is entered, the current brightness of each pixel of the sub display screen is obtained;
and dynamically adjusting the brightness of each pixel of the sub-display screen according to the combination position of each sub-display screen, the real-time distance between adjacent display screens and the current brightness of each pixel of the sub-display screen.
2. The display control method of a spherical dynamic display screen according to claim 1, wherein the dynamically adjusting the brightness of each pixel of the sub-display screen according to the combination position of each sub-display screen, the real-time distance between adjacent display screens, and the current brightness of each pixel of the sub-display screen further comprises the steps of:
acquiring a column of pixels closest to the combination position as a first target pixel according to the combination position of each sub-display screen;
acquiring the current brightness of a first target pixel;
adjusting the brightness of the first target pixel according to the current brightness of the first target pixel and the real-time interval between adjacent display screens;
acquiring brightness change amounts of all first target pixels before and after brightness adjustment;
And adjusting the brightness of pixels around each first target pixel according to the brightness change amount of each first target pixel.
3. The display control method of the spherical dynamic display screen according to claim 2, wherein the adjusting the brightness of the pixels around each first target pixel according to the brightness change amount of each first target pixel further comprises the steps of:
acquiring the position of each first target pixel;
determining the direction of pixel brightness adjustment of each first target pixel according to the position and brightness change amount of each first target pixel;
for each first target pixel:
determining a plurality of pixels around the pixel as second target pixels corresponding to the pixel according to the direction of the brightness adjustment of the pixel and the brightness change quantity of the pixel;
acquiring the brightness balance amount of the pixel according to the brightness change amount of the pixel, wherein the brightness balance amount is the opposite number of the brightness change amount;
the brightness balance quantity of the pixel is distributed to each second target pixel corresponding to the pixel;
and adjusting the brightness of each second target pixel according to the brightness balance amount allocated by each second target pixel.
4. A display control method of a spherical dynamic display screen according to claim 3, wherein said distributing the luminance balance amount of the pixel to each second target pixel corresponding to the pixel further comprises the steps of:
Determining the brightness balance amount allocation proportion of each second target pixel according to the brightness balance amount and the brightness adjustment direction;
and determining the brightness balance amount allocated to each second target pixel according to the brightness balance amount and the brightness balance amount allocation proportion.
5. The display control method of the spherical dynamic display screen according to claim 4, wherein the determining the direction of the pixel brightness adjustment of each first target pixel according to the position and the brightness change amount of each first target pixel further comprises the steps of:
acquiring a second threshold value and a third threshold value;
if the brightness change amount of the pixel is less than or equal to the second threshold value, the number of the pixel brightness adjustment directions of the pixel is 1;
the number of pixel brightness adjustment directions of a pixel is 2 if the brightness change amount of the pixel is greater than the second threshold value and less than or equal to the third threshold value;
the number of pixel brightness adjustment directions of the pixel is 3 if the brightness change amount of the pixel is greater than the third threshold.
6. The display control method of the spherical dynamic display screen according to claim 5, wherein the determining the direction of the pixel brightness adjustment of each first target pixel according to the position and the brightness change amount of each first target pixel further comprises the steps of:
Dividing the sub-display screen into a middle area, a top area and a bottom area;
acquiring a first target pixel belonging to a middle area as a middle pixel according to the position of the first target pixel, acquiring a first target pixel belonging to a top area as a top pixel, and acquiring a first target pixel belonging to a bottom area as a bottom pixel;
if the number of the brightness adjustment directions of the top pixels is less than 2, the brightness adjustment directions are directions close to the top of the sub display screen; if the number of the brightness adjustment directions of the top pixels is more than or equal to 2, selecting a direction close to the top of the sub-display screen as a main direction, and the other directions as auxiliary directions;
if the number of the brightness adjustment directions of the bottom pixels is less than 2, the brightness adjustment directions are directions close to the bottoms of the sub-display screens; if the number of the bottom pixel brightness adjustment directions is more than or equal to 2, selecting a direction close to the bottom of the sub display screen as a main direction, and the other directions as auxiliary directions;
in determining the luminance balance amount allocation ratio of each second target pixel according to the luminance change amount and the luminance adjustment direction, the allocation ratio of a plurality of second target pixels in the same column to the second target pixel in the main direction is made larger than the allocation ratio of the second target pixels in the sub direction.
7. The display control method of the spherical dynamic display screen according to claim 6, wherein the determining the direction of the pixel brightness adjustment of each first target pixel according to the position and the brightness change amount of each first target pixel further comprises the steps of:
acquiring the number of pixel brightness adjustment directions of each middle pixel;
obtaining the total number m of the pixel brightness adjustment directions of the middle pixels according to the number of the pixel brightness adjustment directions of each middle pixel, wherein m is a natural number;
generating a random number sequence with m elements, wherein the element value of each element randomly takes one value of 1, 2 and 3;
distributing element values of m elements of the random number sequence to each middle pixel in sequence;
and determining the brightness adjustment direction of each middle pixel according to the distributed element values and the corresponding relation between the element values and the brightness adjustment directions of the pixels, wherein the element value 1 corresponds to the first direction, the element value 2 corresponds to the second direction, and the element value 3 corresponds to the third direction.
8. The display control method of a spherical dynamic display screen according to any one of claims 3 to 7, characterized in that the method further comprises the steps of:
Acquiring a fourth threshold value;
for each second target pixel, judging whether the absolute value of the brightness balance amount allocated by the second target pixel is larger than a fourth threshold value;
if the brightness adjustment quantity is the difference value between the absolute value of the brightness adjustment quantity allocated by the second target pixel and the fourth threshold value, acquiring the adjustment direction of the second target pixel as a target adjustment direction;
determining the number of the second target pixels to be increased according to the difference value between the absolute value of the brightness adjustment quantity allocated to the second target pixels and the fourth threshold value;
the number of the second target pixels which are increased according to the requirement is increased by a plurality of second target pixels along the target adjustment direction:
the amount of luminance balance allocated to the second target pixel is re-determined and the increased amount of luminance balance allocated to the second target pixel is determined.
9. Display control device for a spherical dynamic display screen, characterized in that it comprises:
the interval acquisition module acquires the interval between the adjacent sub-display screens in a separated state;
the interval judging module is used for judging whether the interval between the adjacent sub-display screens is smaller than a first threshold value or not;
the folding transition display module is used for entering a folding transition display mode if the current display mode is kept, otherwise;
The current brightness acquisition module is used for acquiring the current brightness of each pixel of the sub display screen if the display mode enters a folding transition display mode;
and the pixel brightness adjusting module is used for dynamically adjusting the brightness of each pixel of the sub-display screen according to the combination position of each sub-display screen, the real-time distance between adjacent display screens and the current brightness of each pixel of the sub-display screen.
10. Spherical dynamic display screen, its characterized in that includes: the control circuit is used for controlling the sub-display screen driving mechanism to control the sub-display screens to be mutually separated or combined into a spherical display screen after being folded, and comprises at least one processor, at least one memory and computer program instructions stored in the memory, wherein the computer program instructions are executed by the processor to realize the method according to any one of claims 1-8.
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