CN113747135A - Multi-projection image display method and system - Google Patents
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- H—ELECTRICITY
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- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
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- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
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Abstract
The invention is suitable for the technical field of projection display, and provides a multi-projection image display method and a multi-projection image display system, wherein the method comprises the following steps: dividing the whole image into a plurality of initial local images through an initial dividing line; adding edge dividing lines on two sides of the initial dividing line to determine an edge transition area; dividing the whole image into a plurality of final local images according to the initial dividing line and the edge dividing line; dividing the edge transition zone into a plurality of sub-transition zones according to the edge dividing line, and judging the regions of the sub-transition zones; when the sub-transition region belongs to two final local images at the same time, the brightness value of the sub-transition region is adjusted to 1/2 of the brightness value of the whole image, and when the sub-transition region belongs to four final local images at the same time, the brightness value of the sub-transition region is adjusted to 1/4 of the brightness value of the whole image. The method can automatically identify the sub-transition area and adjust the brightness of the sub-transition area so as to realize the uniformity of the brightness of the whole image and realize accurate adjustment.
Description
Technical Field
The invention relates to the technical field of projection display, in particular to a multi-projection image display method and system.
Background
In order to display an image on a large screen, a plurality of projectors are often adopted to simultaneously project on the large screen at present, the large-screen display technology mainly comprises a splicing technology and an edge fusion technology, wherein a physical gap exists between each display unit of a large-screen display system adopting the splicing technology, so that the sensory experience is influenced; although the large-screen display system using the edge blending technique eliminates the gap between the display units, the brightness of the edge blending region is different from the brightness of the entire image.
In order to solve the problem, a conventional technique divides a picture to be displayed into a plurality of sub-images corresponding to the number and respective positions of projectors by using an image processor, wherein the joint edge portions of adjacent sub-images have the same image content, the edge portions having the same image content are overlapped when the image is projected, and an optical conditioning element for adjusting the brightness is placed on an imaging optical path to change the light intensity distribution of an overlapped area projected onto a screen, so that the brightness of the whole image is uniform. Therefore, it is desirable to provide a multi-projection image display method and system, which aim to solve the above problems.
Disclosure of Invention
In view of the shortcomings of the prior art, the present invention provides a multi-projection image display method and system to solve the above problems in the prior art.
The invention is realized in such a way that a multi-projection image display method comprises the following steps:
dividing the whole image into a plurality of initial local images through initial dividing lines, wherein one initial local image corresponds to one projection terminal;
adding edge dividing lines on two sides of the initial dividing line, wherein edge transition areas are formed between all the edge dividing lines and the edges of the whole image;
dividing the whole image into a plurality of final local images according to the initial dividing line and the edge dividing line, wherein one final local image corresponds to one projection terminal;
dividing the edge transition zone into a plurality of sub-transition zones according to the edge dividing line, and judging the regions of the sub-transition zones;
when the sub-transition region belongs to two final local images at the same time, adjusting the brightness value of the sub-transition region to 1/2 of the brightness value of the whole image, and when the sub-transition region belongs to four final local images at the same time, adjusting the brightness value of the sub-transition region to 1/4 of the brightness value of the whole image;
and transmitting the final local images to corresponding projection terminals, so that the final local images are spliced into a whole by the plurality of projection terminals.
As a further scheme of the invention: the step of segmenting the whole image into a plurality of initial local images through the initial segmentation lines specifically comprises the following steps:
acquiring the number of projection terminals;
acquiring an arrangement mode of the projection terminals;
and uniformly dividing the whole image into a plurality of initial local images according to the number of the projection terminals and the arrangement mode of the projection terminals, wherein the splicing gap of two adjacent initial local images is an initial dividing line.
As a further scheme of the invention: the method comprises the following steps of adding edge dividing lines on two sides of an initial dividing line, wherein an edge transition area is formed between all the edge dividing lines and an enclosed area formed by the edge of the whole image, and the method specifically comprises the following steps:
acquiring a distance value between the initial dividing line and the edge dividing line;
adding edge dividing lines on two sides of the initial dividing line, wherein the distance between the initial dividing line and the edge dividing line is equal to the distance value, the initial dividing line and the corresponding edge dividing line are parallel to each other, and the length value of the initial dividing line is equal to that of the corresponding edge dividing line;
and marking the closed region formed by the edge dividing line and the edge of the whole image as an edge transition region.
As a further scheme of the invention: the step of segmenting the whole image into a plurality of final local images according to the initial segmentation line and the edge segmentation line specifically comprises the following steps:
determining a part of initial segmentation line corresponding to each initial local image, wherein the length value of the part of initial segmentation line is equal to the length value or the width value of the initial local image;
determining an edge dividing line which is closest to the partial initial dividing line, positioned on the outer side of the partial initial dividing line and parallel to the partial initial dividing line;
and obtaining a final local image according to the determined edge dividing line and the part of the initial dividing line.
As a further scheme of the invention: the step of obtaining a final local image according to the determined edge dividing line and part of the initial dividing lines specifically comprises the following steps:
marking the edge dividing line, the partial initial dividing line and a closed region surrounded by the edge of the whole image as an additional region;
and adding the additional region into the initial local images to obtain final local images, wherein each initial local image corresponds to one final local image.
As a further scheme of the invention: the method further comprises the following steps:
receiving an initial segmentation line display command so that the initial segmentation line is displayed in the final local image;
an initial segmentation line hiding command is received such that the initial segmentation line disappears in the final local image.
It is another object of the present invention to provide a multi-projection image display system, the system comprising:
the initial local image module is used for segmenting the whole image into a plurality of initial local images through initial segmentation lines, and one initial local image corresponds to one projection terminal;
the edge transition area determining module is used for adding edge dividing lines on two sides of the initial dividing line, and an edge transition area is formed between all the edge dividing lines and the edge of the whole image;
the final local image module is used for dividing the whole image into a plurality of final local images according to the initial dividing line and the edge dividing line, and one final local image corresponds to one projection terminal;
the sub-transition region determining module is used for dividing the edge transition region into a plurality of sub-transition regions according to the edge dividing line and judging the region of the sub-transition region;
a brightness value adjusting module, adjusting the brightness value of the sub-transition area to 1/2 of the brightness value of the whole image when the sub-transition area belongs to two final local images at the same time, and adjusting the brightness value of the sub-transition area to 1/4 of the brightness value of the whole image when the sub-transition area belongs to four final local images at the same time; and
and the image transmission module is used for transmitting the final local images to the corresponding projection terminals so that the final local images are spliced into a whole by the plurality of projection terminals.
As a further scheme of the invention: the initial partial image module includes:
the quantity acquisition unit is used for acquiring the quantity of the projection terminals;
the arrangement mode acquisition unit is used for acquiring the arrangement mode of the projection terminal; and
and the image segmentation unit is used for uniformly segmenting the whole image into a plurality of initial local images according to the number of the projection terminals and the arrangement mode of the projection terminals, and the splicing gap of two adjacent initial local images is an initial segmentation line.
As a further scheme of the invention: the edge transition region determination module includes:
the distance value acquisition unit is used for acquiring a distance value between the initial dividing line and the edge dividing line;
the edge dividing line adding unit is used for adding edge dividing lines on two sides of an initial dividing line, the distance between the initial dividing line and the edge dividing line is equal to the distance value, the initial dividing line is parallel to the corresponding edge dividing line, and the length value of the initial dividing line is equal to the length value of the corresponding edge dividing line; and
and the edge transition area marking unit is used for marking the closed area formed by the edge dividing line and the edge of the whole image as an edge transition area.
As a further scheme of the invention: the final partial image module includes:
a part initial dividing line unit, configured to determine a part initial dividing line corresponding to each initial local image, where a length value of the part initial dividing line is equal to a length value or a width value of the initial local image;
the edge dividing line corresponding unit is used for determining an edge dividing line which is closest to the partial initial dividing line, positioned at the outer side of the partial initial dividing line and parallel to the partial initial dividing line; and
and the final local image unit is used for obtaining a final local image according to the determined edge dividing line and the part of the initial dividing line.
Compared with the prior art, the invention has the beneficial effects that: the invention divides the whole image into a plurality of final local images, is provided with an edge transition area, divides the edge transition area into sub-transition areas, judges the area of each sub-transition area, adjusts the brightness value of the sub-transition area to 1/2 of the brightness value of the whole image when the sub-transition areas belong to two final local images simultaneously, adjusts the brightness value of the sub-transition areas to 1/4 of the brightness value of the whole image when the sub-transition areas belong to four final local images simultaneously, finally transmits the final local images to corresponding projection terminals, and splices the final local images into a whole by a plurality of projection terminals. Is convenient to use.
Drawings
Fig. 1 is a schematic diagram illustrating segmentation of an overall image in a multi-projection image display method.
FIG. 2 is a diagram illustrating an edge transition region in a multi-projection image display method.
FIG. 3 is a flow chart of a multi-projection image display method.
FIG. 4 is a flow chart of a multi-projection image display method for segmenting an entire image into initial partial images.
FIG. 5 is a flow chart of adding edge dividing lines on both sides of an initial dividing line in a multi-projection image display method.
Fig. 6 is a flowchart of dividing the whole image into a plurality of final partial images in a multi-projection image display method.
FIG. 7 is a flow chart of a multi-projection image display method for obtaining a final partial image according to a determined edge segmentation line and a part of initial segmentation lines.
FIG. 8 is a flowchart illustrating an initial segmentation line display and hiding method in a multi-projection image display method.
Fig. 9 is a schematic structural diagram of a multi-projection image display system.
FIG. 10 is a block diagram of an initial local image module in a multi-projection image display system.
FIG. 11 is a block diagram of an edge transition determination module in a multi-projection image display system.
FIG. 12 is a block diagram of a final partial image module in a multi-projection image display system.
Reference numerals: 1-initial segmentation line, 2-edge segmentation line, 3-edge transition region, 31-first sub-transition region, 32-second sub-transition region, 33-third sub-transition region, 34-fourth sub-transition region, 35-fifth sub-transition region, 4-additional region, 51-first initial local image, 52-second initial local image, 53-third initial local image, 54-fourth initial local image.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
As shown in fig. 1, 2 and 3, an embodiment of the present invention provides a multi-projection image display method, including the steps of:
s100, dividing the whole image into a plurality of initial local images through an initial dividing line 1, wherein one initial local image corresponds to one projection terminal;
s200, adding edge dividing lines 2 on two sides of an initial dividing line 1, wherein an edge transition area 3 is formed between all the edge dividing lines 2 and the edge of the whole image;
s300, dividing the whole image into a plurality of final local images according to an initial dividing line 1 and an edge dividing line 2, wherein one final local image corresponds to one projection terminal;
s400, dividing the edge transition zone 3 into a plurality of sub-transition zones according to the edge dividing line 2, and judging the regions of the sub-transition zones;
s500, when the sub-transition area belongs to two final local images at the same time, adjusting the brightness value of the sub-transition area to 1/2 of the brightness value of the whole image, and when the sub-transition area belongs to four final local images at the same time, adjusting the brightness value of the sub-transition area to 1/4 of the brightness value of the whole image;
s600, the final local images are transmitted to the corresponding projection terminals, so that the final local images are spliced into a whole by the plurality of projection terminals.
It should be noted that, in order to enable an image to be displayed on a large screen, a plurality of projectors are often adopted to project on the large screen at the same time at present, and the large-screen display technology mainly includes a splicing technology and an edge fusion technology, wherein a physical gap exists between each display unit of the large-screen display system adopting the splicing technology, which greatly affects the sensory experience; although the large-screen display system adopting the edge fusion technology eliminates gaps between display units, the brightness of an edge fusion area is different from that of the whole image, in order to solve the problem, the prior art utilizes an image processor to divide a picture to be displayed into a plurality of sub-images corresponding to the number and the positions of projectors, the joint edge parts of the adjacent sub-images have the same image content, the edge parts with the same image content are overlapped when the image is projected, and an optical conditioning element for adjusting the brightness is arranged on an imaging optical path to change the light intensity distribution of an overlapping area projected on a screen, so that the brightness of the whole image becomes uniform, but the method needs an external optical element, and the optical conditioning element can accurately adjust the brightness of only the whole overlapping area after being installed, the installation process of the optical tempering element is complex, and the overlapped area is difficult to change and adjust.
In the embodiment of the present invention, an overall image is first divided into a plurality of initial local images through an initial dividing line 1, one of the initial local images corresponds to one projection terminal, which is a projection device, for example, the embodiment of the present invention divides the overall image into four initial local images, which are a first initial local image 51, a second initial local image 52, a third initial local image 53, and a fourth initial local image 54, then edge dividing lines 2 are added on both sides of each initial dividing line 1, an edge transition region 3 is formed between all the edge dividing lines 2 and a closed region formed by the edges of the overall image, and then the overall image is divided into a plurality of final local images according to the initial dividing lines 1 and the edge dividing lines 2, for example, one final local image in the embodiment of the present invention is composed of the first initial local image 51 and the additional region 4, in addition, the edge transition area 3 is further divided into a plurality of sub-transition areas according to the edge dividing line 2, for example, the embodiment of the present invention divides the edge transition area 3 into a first sub-transition area 31, a second sub-transition area 32, a third sub-transition area 33, a fourth sub-transition area 34 and a fifth sub-transition area 35, determines the area to which each sub-transition area belongs, adjusts the luminance value of the sub-transition area to 1/2 of the luminance value of the whole image when the sub-transition areas belong to two final local images at the same time, adjusts the luminance value of the sub-transition area to 1/4 of the luminance value of the whole image when the sub-transition areas belong to four final local images at the same time, adjusts the luminance values of the first sub-transition area 31, the second sub-transition area 32, the third sub-transition area 33 and the fourth sub-transition area 34 to 1/2 of the luminance value of the whole image, the brightness value of the fifth sub-transition area 35 is adjusted to 1/2 of the brightness value of the whole image, the final local image is finally transmitted to the corresponding projection terminals, and the final local images are spliced into a whole by the plurality of projection terminals and displayed on a large screen.
As shown in fig. 1 and fig. 4, as a preferred embodiment of the present invention, the step of segmenting the whole image into a plurality of initial partial images through the initial segmentation lines specifically includes:
s101, acquiring the number of projection terminals;
s102, acquiring an arrangement mode of the projection terminals;
s103, uniformly dividing the whole image into a plurality of initial local images according to the number of the projection terminals and the arrangement mode of the projection terminals, wherein the splicing gap of two adjacent initial local images is the initial dividing line 1.
In the embodiment of the invention, before the whole image is segmented, the number of the projection terminals and the arrangement mode of the projection terminals need to be acquired, and the number of the projection terminals and the arrangement mode of the projection terminals can be uploaded by workers, so that the initial partial images after segmentation can be in one-to-one correspondence with the projection terminals.
As shown in fig. 1 and 5, as a preferred embodiment of the present invention, the step of adding edge dividing lines 2 on both sides of an initial dividing line 1, and forming an edge transition region 3 between all the edge dividing lines 2 and an enclosed region formed by the edge of the whole image specifically includes:
s201, obtaining a distance value between an initial parting line 1 and an edge parting line 2;
s202, adding edge dividing lines 2 on two sides of an initial dividing line 1, wherein the distance between the initial dividing line 1 and the edge dividing line 2 is equal to the distance value, the initial dividing line 1 is parallel to the corresponding edge dividing line 2, and the length value of the initial dividing line 1 is equal to the length value of the corresponding edge dividing line 2;
s203, mark the closed region formed by the edge dividing line 2 and the edge of the whole image as an edge transition region 3.
In the embodiment of the invention, the distance value between the initial dividing line 1 and the edge dividing line 2 needs to be acquired firstly, the distance value can be uploaded according to the requirements of a user, then the edge dividing line 2 is automatically added on two sides of the initial dividing line 1, and the closed area formed by the edge dividing line 2 and the edge of the whole image is automatically marked as the edge transition area 3.
As shown in fig. 1 and fig. 6, as a preferred embodiment of the present invention, the step of dividing the whole image into a plurality of final partial images according to the initial dividing line 1 and the edge dividing line 2 specifically includes:
s301, determining a part of initial segmentation line corresponding to each initial local image, wherein the length value of the part of initial segmentation line is equal to the length value or the width value of the initial local image;
s302, determining an edge dividing line 2 which is closest to the partial initial dividing line, is positioned at the outer side of the partial initial dividing line and is parallel to the partial initial dividing line;
and S303, obtaining a final local image according to the determined edge dividing line 2 and the partial initial dividing line.
In the embodiment of the present invention, in order to obtain a final local image corresponding to each initial local image, first, a part of initial segmentation line corresponding to the initial local image needs to be determined, where the part of initial segmentation line coincides with an edge of the initial local image, and then, an edge segmentation line 2 closest to the part of initial segmentation line, located outside the part of initial segmentation line, and parallel to the part of initial segmentation line needs to be obtained, so that the final local image can be obtained.
As shown in fig. 1 and fig. 7, as a preferred embodiment of the present invention, the step of obtaining a final local image according to the determined edge partition line 2 and the partial initial partition line specifically includes:
s3031, marking the edge dividing line 2, the part of initial dividing line and a closed region surrounded by the edge of the whole image as an additional region 4;
and S3032, adding the additional region 4 into the initial local images to obtain final local images, wherein each initial local image corresponds to one final local image, and the final local images are obtained by expanding the initial local images outwards by a certain region.
As shown in fig. 1 and 8, as a preferred embodiment of the present invention, the method further includes:
s701, receiving an initial dividing line display command to enable an initial dividing line 1 to be displayed in a final local image;
s702, an initial segmentation line hiding command is received, so that the initial segmentation line 1 disappears in the final local image.
In the embodiment of the invention, it can be understood that, in order to display the whole image after being divided on the projection screen completely and correctly, the projector is required to be installed at a correct position and the angle is adjusted, and in order to facilitate the installation of the projector, an initial dividing line display command can be input to display the initial dividing line 1 in the final local image, so that the initial dividing lines 1 in two adjacent final local images are overlapped when the installation is adjusted, the installation is quicker and more convenient, and after all the projectors are installed, an initial dividing line hiding command is input to make the initial dividing line 1 disappear from the final local image so as to prevent the initial dividing line 1 from influencing the overall impression.
As shown in fig. 1, 2 and 9, an embodiment of the present invention further provides a multi-projection image display system, including:
an initial local image module 100, configured to segment an overall image into a plurality of initial local images through an initial segmentation line 1, where one of the initial local images corresponds to one of the projection terminals;
an edge transition region determining module 200, configured to add edge dividing lines 2 to two sides of an initial dividing line 1, where an edge transition region 3 is located between all the edge dividing lines 2 and a closed region formed by an edge of the whole image;
a final local image module 300, configured to divide the overall image into a plurality of final local images according to the initial partition line 1 and the edge partition line 2, where one final local image corresponds to one projection terminal;
the sub-transition region determining module 400 is configured to divide the edge transition region 3 into a plurality of sub-transition regions according to the edge dividing line 2, and determine a region to which the sub-transition region belongs;
a brightness value adjusting module 500, configured to adjust the brightness value of the sub-transition region to 1/2 of the brightness value of the overall image when the sub-transition region belongs to two final local images at the same time, and adjust the brightness value of the sub-transition region to 1/4 of the brightness value of the overall image when the sub-transition region belongs to four final local images at the same time;
and the image transmission module 600 is configured to transmit the final local image to the corresponding projection terminal, so that the final local image is spliced into a whole by the plurality of projection terminals.
In the embodiment of the present invention, an overall image is first divided into a plurality of initial local images through an initial dividing line 1, one of the initial local images corresponds to one projection terminal, which is a projection device, for example, the embodiment of the present invention divides the overall image into four initial local images, which are a first initial local image 51, a second initial local image 52, a third initial local image 53, and a fourth initial local image 54, then edge dividing lines 2 are added on both sides of each initial dividing line 1, an edge transition region 3 is formed between all the edge dividing lines 2 and a closed region formed by the edges of the overall image, and then the overall image is divided into a plurality of final local images according to the initial dividing lines 1 and the edge dividing lines 2, for example, one final local image in the embodiment of the present invention is composed of the first initial local image 51 and the additional region 4, in addition, the edge transition area 3 is further divided into a plurality of sub-transition areas according to the edge dividing line 2, for example, the embodiment of the present invention divides the edge transition area 3 into a first sub-transition area 31, a second sub-transition area 32, a third sub-transition area 33, a fourth sub-transition area 34 and a fifth sub-transition area 35, determines the area to which each sub-transition area belongs, adjusts the luminance value of the sub-transition area to 1/2 of the luminance value of the whole image when the sub-transition areas belong to two final local images at the same time, adjusts the luminance value of the sub-transition area to 1/4 of the luminance value of the whole image when the sub-transition areas belong to four final local images at the same time, adjusts the luminance values of the first sub-transition area 31, the second sub-transition area 32, the third sub-transition area 33 and the fourth sub-transition area 34 to 1/2 of the luminance value of the whole image, the brightness value of the fifth sub-transition area 35 is adjusted to 1/2 of the brightness value of the whole image, the final local image is finally transmitted to the corresponding projection terminals, and the final local images are spliced into a whole by the plurality of projection terminals and displayed on a large screen.
As shown in fig. 1 and 10, as a preferred embodiment of the present invention, the initial partial image module 100 includes:
a number acquisition unit 101 that acquires the number of projection terminals;
an arrangement mode acquisition unit 102 that acquires an arrangement mode of the projection terminals;
and the image segmentation unit 103 is used for uniformly segmenting the whole image into a plurality of initial local images according to the number of the projection terminals and the arrangement mode of the projection terminals, wherein a splicing gap between two adjacent initial local images is an initial segmentation line 1.
In the embodiment of the invention, before the whole image is segmented, the number of the projection terminals and the arrangement mode of the projection terminals need to be acquired, and the number of the projection terminals and the arrangement mode of the projection terminals can be uploaded by workers, so that the initial partial images after segmentation can be in one-to-one correspondence with the projection terminals.
As shown in fig. 1 and 11, as a preferred embodiment of the present invention, the edge transition area determining module 200 includes:
a distance value obtaining unit 201 that obtains a distance value between the initial dividing line 1 and the edge dividing line 2;
an edge dividing line adding unit 202, which adds edge dividing lines 2 on both sides of an initial dividing line 1, wherein the distance between the initial dividing line 1 and the edge dividing line 2 is equal to the distance value, the initial dividing line 1 is parallel to the corresponding edge dividing line 2, and the length value of the initial dividing line 1 is equal to the length value of the corresponding edge dividing line 2;
the edge transition region marking unit 203 marks a closed region formed by the edge dividing line 2 and the edge of the whole image as an edge transition region 3.
In the embodiment of the invention, the distance value between the initial dividing line 1 and the edge dividing line 2 needs to be acquired firstly, the distance value can be uploaded according to the requirements of a user, then the edge dividing line 2 is automatically added on two sides of the initial dividing line 1, and the closed area formed by the edge dividing line 2 and the edge of the whole image is automatically marked as the edge transition area 3.
As shown in fig. 1 and 12, as a preferred embodiment of the present invention, the final partial image module 300 includes:
a partial initial segmentation line unit 301, configured to determine a partial initial segmentation line corresponding to each initial local image, where a length value of the partial initial segmentation line is equal to a length value or a width value of the initial local image;
an edge dividing line correspondence unit 302 that determines an edge dividing line 2 that is closest to the partial initial dividing line, located outside the partial initial dividing line, and parallel to the partial initial dividing line;
and a final local image unit 303, which obtains a final local image according to the determined edge dividing line 2 and the partial initial dividing line.
In the embodiment of the present invention, in order to obtain a final local image corresponding to each initial local image, first, a part of initial segmentation line corresponding to the initial local image needs to be determined, where the part of initial segmentation line coincides with an edge of the initial local image, and then, an edge segmentation line 2 closest to the part of initial segmentation line, located outside the part of initial segmentation line, and parallel to the part of initial segmentation line needs to be obtained, so that the final local image can be obtained.
The present invention has been described in detail with reference to the preferred embodiments thereof, and it should be understood that the invention is not limited thereto, but is intended to cover modifications, equivalents, and improvements within the spirit and scope of the present invention.
It should be understood that, although the steps in the flowcharts of the embodiments of the present invention are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in various embodiments may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a non-volatile computer-readable storage medium, and can include the processes of the embodiments of the methods described above when the program is executed. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (10)
1. A multi-projection image display method, comprising the steps of:
dividing the whole image into a plurality of initial local images through initial dividing lines, wherein one initial local image corresponds to one projection terminal;
adding edge dividing lines on two sides of the initial dividing line, wherein edge transition areas are formed between all the edge dividing lines and the edges of the whole image;
dividing the whole image into a plurality of final local images according to the initial dividing line and the edge dividing line, wherein one final local image corresponds to one projection terminal;
dividing the edge transition zone into a plurality of sub-transition zones according to the edge dividing line, and judging the regions of the sub-transition zones;
when the sub-transition region belongs to two final local images at the same time, adjusting the brightness value of the sub-transition region to 1/2 of the brightness value of the whole image, and when the sub-transition region belongs to four final local images at the same time, adjusting the brightness value of the sub-transition region to 1/4 of the brightness value of the whole image;
and transmitting the final local images to corresponding projection terminals, so that the final local images are spliced into a whole by the plurality of projection terminals.
2. The method of claim 1, wherein the step of segmenting the whole image into a plurality of initial partial images by the initial segmentation lines comprises:
acquiring the number of projection terminals;
acquiring an arrangement mode of the projection terminals;
and uniformly dividing the whole image into a plurality of initial local images according to the number of the projection terminals and the arrangement mode of the projection terminals, wherein the splicing gap of two adjacent initial local images is an initial dividing line.
3. The method according to claim 1, wherein the step of adding edge dividing lines on both sides of the initial dividing line and forming an edge transition region between all the edge dividing lines and the edge of the whole image comprises:
acquiring a distance value between the initial dividing line and the edge dividing line;
adding edge dividing lines on two sides of the initial dividing line, wherein the distance between the initial dividing line and the edge dividing line is equal to the distance value, the initial dividing line and the corresponding edge dividing line are parallel to each other, and the length value of the initial dividing line is equal to that of the corresponding edge dividing line;
and marking the closed region formed by the edge dividing line and the edge of the whole image as an edge transition region.
4. The method as claimed in claim 1, wherein the step of dividing the whole image into a plurality of final partial images according to the initial dividing line and the edge dividing line comprises:
determining a part of initial segmentation line corresponding to each initial local image, wherein the length value of the part of initial segmentation line is equal to the length value or the width value of the initial local image;
determining an edge dividing line which is closest to the partial initial dividing line, positioned on the outer side of the partial initial dividing line and parallel to the partial initial dividing line;
and obtaining a final local image according to the determined edge dividing line and the part of the initial dividing line.
5. The method of claim 4, wherein the step of obtaining a final partial image according to the determined edge partition line and the partial initial partition line comprises:
marking the edge dividing line, the partial initial dividing line and a closed region surrounded by the edge of the whole image as an additional region;
and adding the additional region into the initial local images to obtain final local images, wherein each initial local image corresponds to one final local image.
6. The method of claim 1, further comprising:
receiving an initial segmentation line display command so that the initial segmentation line is displayed in the final local image;
an initial segmentation line hiding command is received such that the initial segmentation line disappears in the final local image.
7. A multi-projection image display system, the system comprising:
the initial local image module is used for segmenting the whole image into a plurality of initial local images through initial segmentation lines, and one initial local image corresponds to one projection terminal;
the edge transition area determining module is used for adding edge dividing lines on two sides of the initial dividing line, and an edge transition area is formed between all the edge dividing lines and the edge of the whole image;
the final local image module is used for dividing the whole image into a plurality of final local images according to the initial dividing line and the edge dividing line, and one final local image corresponds to one projection terminal;
the sub-transition region determining module is used for dividing the edge transition region into a plurality of sub-transition regions according to the edge dividing line and judging the region of the sub-transition region;
a brightness value adjusting module, adjusting the brightness value of the sub-transition area to 1/2 of the brightness value of the whole image when the sub-transition area belongs to two final local images at the same time, and adjusting the brightness value of the sub-transition area to 1/4 of the brightness value of the whole image when the sub-transition area belongs to four final local images at the same time; and
and the image transmission module is used for transmitting the final local images to the corresponding projection terminals so that the final local images are spliced into a whole by the plurality of projection terminals.
8. The multi-projection image display system of claim 7, wherein the initial local image module comprises:
the quantity acquisition unit is used for acquiring the quantity of the projection terminals;
the arrangement mode acquisition unit is used for acquiring the arrangement mode of the projection terminal; and
and the image segmentation unit is used for uniformly segmenting the whole image into a plurality of initial local images according to the number of the projection terminals and the arrangement mode of the projection terminals, and the splicing gap of two adjacent initial local images is an initial segmentation line.
9. The multi-projection image display system of claim 7, wherein the edge transition determination module comprises:
the distance value acquisition unit is used for acquiring a distance value between the initial dividing line and the edge dividing line;
the edge dividing line adding unit is used for adding edge dividing lines on two sides of an initial dividing line, the distance between the initial dividing line and the edge dividing line is equal to the distance value, the initial dividing line is parallel to the corresponding edge dividing line, and the length value of the initial dividing line is equal to the length value of the corresponding edge dividing line; and
and the edge transition area marking unit is used for marking the closed area formed by the edge dividing line and the edge of the whole image as an edge transition area.
10. The multi-projection image display system of claim 7, wherein the final partial image module comprises:
a part initial dividing line unit, configured to determine a part initial dividing line corresponding to each initial local image, where a length value of the part initial dividing line is equal to a length value or a width value of the initial local image;
the edge dividing line corresponding unit is used for determining an edge dividing line which is closest to the partial initial dividing line, positioned at the outer side of the partial initial dividing line and parallel to the partial initial dividing line; and
and the final local image unit is used for obtaining a final local image according to the determined edge dividing line and the part of the initial dividing line.
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Application publication date: 20211203 |