CN112734639A - Image display splicing method and system - Google Patents
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- G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
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Abstract
The invention discloses an image display splicing method, which comprises the following steps: s1, segmenting the original image according to the number of the display screens forming the splicing matrix to obtain a plurality of sub-images, wherein the number of the sub-images is equal to that of the display screens; s2, determining the position of the display screen corresponding to each sub-image in the original image; and S3, sending the original image to a display screen according to the coordinates for display. The invention also provides an image splicing display system, which can solve the problems that the display screen with low configuration in the prior art can not display high-definition content of 4K or more and can not realize special-shaped splicing.
Description
Technical Field
The invention belongs to the field of video processing, and particularly relates to an image display splicing method and system.
Background
With the development of the field of video display, large-screen tiled display is more and more favored by users, in the current market, a split screen device is mostly adopted for content output by a tiled screen, that is, N output ports are arranged for N display screens, and corresponding content is displayed at different positions, but actually, the output of each screen is the content of the whole video, and the content displayed on the display screen finally is 1/N of the content of the whole video, so that a lot of physical routing is generated, and high-definition content of 4K or more cannot be displayed on low-configuration hardware display equipment; in addition, the requirement of users for the special-shaped screen is increased, and the current screen splitter technology cannot meet the market requirement of special-shaped splicing.
If the maximum resolution of each spliced screen is 1920x1080 and the output content resolution is 3840x2160, the use of the split screen device can result in the actual output of each screen being 3840x2160, and the low-configuration display screen end cannot be normally used because the resolution cannot be supported, and meanwhile, the requirements on the user can support the special-shaped spliced display, and the split screen device cannot be satisfied.
The application publication date is 2019, 3, 8, the application publication number is CN109448633A, and a Chinese patent with a patent name of a special-shaped LED display screen display implementation control method and a system for implementing the same discloses a technical scheme, which comprises the following steps: the method comprises the steps of obtaining configuration information of a sending system, obtaining screen information of a special-shaped LED display screen, obtaining original image data information of the special-shaped LED display screen, generating an original image data processing instruction, processing original image data to generate an image data cache file, sending the image data cache file to the special-shaped LED display screen for playing, and achieving display and playing of the special-shaped LED display screen.
The application publication date is 2019, 10 and 18, the application publication number is CN110351497A, and another technical scheme is disclosed in a Chinese patent with the patent name of a tiled display system, and the technical scheme comprises the following steps: each display unit is provided with a display screen, a controller and a power supply, the power supply is used for supplying power to the display screen and the controller, the display screen is used for displaying images pre-stored in the controller, and address codes pre-input according to the positions of the display units are arranged in the controller; the main controller cuts the images prestored in the main controller according to the number and the relative positions of the display units to form local images of the images, the main controller is provided with a communication port, and after the controller is connected with the main controller through the communication port, the main controller respectively issues the local images to the controller according to the address codes. The display units download and store corresponding partial pictures from the main controller according to respective address codes, so that the plurality of display units are spliced together to form a complete image.
Different from the technical scheme, the invention provides a low-cost image display splicing method and system.
Disclosure of Invention
1. Problems to be solved
The invention provides an image display splicing method and system, aiming at the problems that a display screen with low configuration in the prior art cannot display high-definition content of 4K or more and cannot realize special-shaped splicing and the like.
2. Technical scheme
In order to solve the problems, the technical scheme adopted by the invention is as follows: an image display stitching method comprises the following steps:
s1, segmenting the original image according to the number of the display screens forming the splicing matrix to obtain a plurality of sub-images, wherein the number of the sub-images is equal to that of the display screens;
s2, determining the coordinates of the display screen corresponding to each sub-image in the original image;
and S3, sending the original image to a display screen for display according to the coordinates.
According to the technical scheme, the original image is cut into the sub-images with the number equal to that of the display screens, the positions of the display screens corresponding to the sub-images are found in the original image, and then the sub-images are distributed to the display screens.
Further, the step S2 is specifically: the coordinates of each display screen on the original image are M 'N' (x (M-1) × W/M, y (N-1) × H/N, W: W/M, H: H/N), wherein M 'N' represents the position of the display screen on the original image, x represents the abscissa of the upper left corner of the display screen, y represents the ordinate of the upper left corner of the display screen, W represents the width of the display screen, H represents the height of the display screen, M represents the number of the display screens arranged in the transverse direction, N represents the number of the display screens arranged in the longitudinal direction, W is the number of pixels in the transverse direction of the original image, and H is the number of pixels in the longitudinal direction of the original image. The technical scheme is suitable for the rectangular spliced matrix with a plurality of displays arranged transversely and longitudinally.
Further, the step S2 is specifically:
s21, determining a minimum circumscribed rectangle of a display screen, where the minimum circumscribed rectangle has a width w1 and a height h1, where w1 is w × cos α + h × sin α, and h1 is w × sin α + h × cos α, where α is an angle formed by the spliced screen and the x axis in the opposite direction, w represents a width of the display screen, and h represents a height of the display screen;
s22, counterclockwise rotating the display screen in step S21 by α, and obtaining the minimum circumscribed rectangle of the minimum circumscribed rectangle in step S21, where the minimum circumscribed rectangle has a width w2 and a height h2, w2 ═ w1 ═ cos α + h1 ═ sin α, and the height h2 ═ w1 ═ sin α + h1 · cos α;
s23, calculating the minimum circumscribed rectangle in step S22, wherein the minimum circumscribed rectangle has a width w3 and a height h3, w3 ═ w2 ═ cos α + h2 × sin α, and the height h3 ═ w2 ═ sin α + h2 × (cos α);
s24, cutting the display screen by using the minimum circumscribed rectangle in the step S23;
s25, calculating the coordinate position of the display screen according to the proportion of the original image to the display screen, and cutting the original image to obtain a plurality of sub-images;
s26, clockwise rotating the sub-image in the step S25 by an angle alpha which is more than or equal to 0 degrees and less than or equal to 90 degrees. This technical scheme is applicable to special-shaped concatenation matrix, for example special shapes such as fishbone shape, reverse fishbone shape, fish shape, and in these special-shaped concatenation matrixes, can not shelter from each other between the display screen.
Further, the step S25 is specifically: the width W4 of the display screen on the original image is W3 xL1, the height H4 of the display screen on the original image is H3xL2, wherein L1 is the ratio of the width of the original image to the width of the canvas, L2 is the ratio of the height of the original image to the height of the canvas, wherein L1 is W/W ', L2 is H/H', W is the number of pixels in the horizontal direction of the original image, H is the number of pixels in the vertical direction of the original image, W 'represents the pixel width of the canvas, H' represents the pixel height of the canvas, W1 represents the width of the display screen, and H1 represents the height of the display screen.
Further, the step S2 is specifically:
s21', rotating the canvas by an angle α, wherein the coordinates of any angle B of the display screen are (cos α X + sin α y, sin α O1C-sin α X + cos α y), wherein O1C is the distance from point O1 to point C, O1 coordinate system represents the coordinate system before the canvas and display screen are rotated, O2 coordinate system represents the coordinate system after the canvas and display screen are rotated, C represents the intersection of the X-axis forward direction of the O1 coordinate system and the X-axis forward direction of the O2 coordinate system, X is the abscissa of a point a before the canvas rotation corresponding to B, and y is the ordinate of a point a before the canvas rotation corresponding B;
s22', determining the coordinate of the display screen on the original image according to the proportional relation between the size of the current canvas and the original image;
s23', repeating the above steps, finding out the coordinates of each corner of all display screens, and determining the content of the display screen correspondingly displayed on the original image. The technical scheme is suitable for the special shapes of the possible special-shaped spliced matrixes, such as fishbone shapes, reverse fishbone shapes, fish shapes and the like, and the condition that the display screens are shielded possibly can occur among the special-shaped spliced matrixes.
Further, the point B in the display screen is a coordinate point of the display screen at the upper left corner of the display screen in the canvas.
The invention also provides an image mosaic display system, which is used for the image mosaic display method, and the device comprises the following components: the image processing and outputting device comprises at least two display screens, the image processing and outputting device is used for determining the positions of the display screens on an original image, cutting the original image to obtain a plurality of sub-images and sending the sub-images to the display device, and the display device is used for receiving the display content of the image and displaying the display content on the display screens.
Further, the image processing output device cuts, rotates and scales the original image to generate sub-images, and sends the sub-images to each display screen.
Furthermore, a spliced matrix formed by display screens in the display equipment is rectangular or special-shaped.
Further, the image processing output device is a computer.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention enables the low-configuration display screen equipment to display high-definition content output of more than 4K, thereby effectively reducing the cost;
(2) the invention can meet the requirements of the spliced screen and the special-shaped screen formed by the low-configuration display screen equipment, and can ensure that the user can realize screen splicing and special-shaped display without upgrading and upgrading the original display screen equipment.
Drawings
FIG. 1 is a block diagram of the system of the present invention;
FIG. 2 is a schematic view of a display screen layout of a standard screen according to the present invention;
FIG. 3 is a schematic diagram of a display screen and its minimum bounding rectangle in embodiment 2 of the present invention;
FIG. 4 is a schematic view of the display screen of FIG. 3 after being rotated counterclockwise by a degree;
FIG. 5 is a schematic view of FIG. 4 and its minimum bounding rectangle;
FIG. 6 is a schematic diagram of a split view of the display screen of FIG. 5;
FIG. 7 is a schematic view of the display screen of FIG. 6 after being rotated clockwise by an angle α;
FIG. 8 is one of the graphs of the mosaic matrix in embodiment 2 of the present invention;
FIG. 9 is a second diagram of a mosaic matrix in example 2 of the present invention;
FIG. 10 is a third diagram of a mosaic matrix in example 2 of the present invention;
FIG. 11 is one of the graphs of the mosaic matrix in embodiment 3 of the present invention;
FIG. 12 is a schematic diagram showing the coordinates of a display screen before the canvas is rotated in embodiment 3 of the present invention;
FIG. 13 is a schematic diagram of coordinates of a display screen after canvas rotation in embodiment 3 of the present invention
Fig. 14 is a schematic diagram showing the coordinates of one corner of the display screen after the canvas is rotated in embodiment 3 of the present invention.
Detailed Description
The invention is further described with reference to specific examples.
The present invention comprises a tiled display system, as shown in fig. 1, comprising: the display device comprises at least two display screens, the image processing output device is used for determining the positions of the display screens on an original image, cutting the original image to obtain a plurality of sub-images and sending the sub-images to the display device, and the display device is used for receiving the display content of the image and displaying the display content on the display screens to form the special-shaped splicing display pattern. The multiple display screens can be spliced into a common rectangle or square, or a fishbone shape, a reverse fishbone shape and other special-shaped patterns. In a specific implementation, the image processing output device may be a server, a computer, or the like, as long as the device acquires image data and performs a processing function on the image data, and the device is not limited herein.
The invention also provides an image splicing display method, which can display high-definition original images on a low-cost display screen.
(1) According to the method, an original image is cut into a plurality of sub-images according to the number of display screens forming a splicing matrix, in the method, the plurality of display screens are spliced on a canvas to form the splicing matrix, the original image is segmented and divided into a plurality of sub-images, the number of the sub-images is the same as that of the display screens, namely, each sub-image corresponds to one display screen;
(2) determining the coordinates of the display screen corresponding to each sub-image in the original image, because the content of the original image needs to be displayed on the mosaic matrix formed by the display screens, it needs to determine the position or coordinates of the display screen on the original image (more specifically, determine the position of the image content displayed by the display screen on the original image), and how to determine the position or coordinates of the display screen on the original image is determined according to the specific shape of the mosaic matrix formed by the display screens, specifically, see the content described in each embodiment;
(3) and sending the original image to a display screen for display according to the coordinates, sending the original image to the display screen after the coordinates or positions of the display screen corresponding to the sub-images are determined, and displaying each sub-image on the corresponding display screen.
In the present invention, a mosaic matrix formed by mosaicing the display screens is set in the canvas, and the ratio of the original image to the canvas determines whether to display the original image in an enlarged or reduced manner and the ratio of the enlarged or reduced image. This is described in detail below with reference to the shape of the particular mosaic matrix.
Example 1
Example 1 a display division scheme of a standard screen, where the standard screen refers to that the display screen is placed at a position consistent with a conventional display screen, and a display screen formed by splicing a plurality of display screens is also consistent with a conventional display screen, specifically, as shown in fig. 2, M × N display screens, where M and N are both natural numbers greater than 1, M is the number of display screens arranged in a horizontal direction, N is the number of display screens arranged in a vertical direction, each display screen displays a part of content of an original image, the display screens are associated with image content displayed thereon, if a resolution of the original image is W × H, coordinates of the M × N display screens on the original image need to be determined so as to determine a corresponding relationship between the original image and an image displayed by the display screens, so as to distribute the image content, and the coordinates of each display screen on the original image are M 'N' (x (M-1) (× W/M), y (N-1) H/N, W W/M, H H/N), wherein M 'N' represents the position of the display screen on the original image, x represents the abscissa of a point at a certain corner on the display screen, y represents the ordinate of a point at a certain corner on the display screen, W represents the width of the display screen, H represents the height of the display screen, W is a pixel in the transverse direction of the original image, and H is a pixel in the longitudinal direction of the original image. When a corner of a display screen is determined, in this embodiment, the coordinates of the point at the upper left corner and the width and height of the display screen are selected, the position of the display screen on the original image can be determined (i.e., where the content displayed on each display screen is located on the original image), and after the position of each display screen on the original image is determined, the original image is cut, and the cut images are distributed to different display screens for display, so as to obtain a stitched image finally composed of the content displayed on each display screen.
Example 2
The embodiment is directed to a splicing method in a conventional special-shaped spliced display screen, where the conventional special-shaped spliced display screen means that mutual occlusion does not occur between display screens, as shown in fig. 8, 9, and 10, while an unconventional special-shaped spliced display screen means that a situation in which display screens occlude each other exists (as shown in embodiment 3 and fig. 11), the embodiment is directed to a display method of a conventional special-shaped screen, and specifically includes the following steps: the present embodiment employs P display screens, where P is a natural number greater than 1, and the resolution of the original image is W × H, where W represents pixels in the horizontal direction of the original image and H represents pixels in the vertical direction of the original image. The specific method comprises the following steps:
it should be noted that, since the special-shaped tiled display screen is formed by arranging a plurality of display screens on the canvas, in embodiments 2 and 3, the coordinates of each display screen arranged on the canvas can be determined, and the specific method is not described herein again, after the specific coordinates of each display screen are determined, since the placement position of the display screen may be inclined, the position of the display screen on the original image cannot be determined (that is, the position of the image content displayed by the display screen on the original image), and therefore the original image content can be cut and distributed to each display screen only after the position of the display screen relative to the original image is determined, and the specific steps are as follows.
1) After the coordinates of the display screen in the canvas are determined, as shown in fig. 3, a minimum circumscribed rectangle of one display screen in the special-shaped mosaic matrix is calculated, the minimum circumscribed rectangle is shown by a dotted frame part in fig. 3, the width of the minimum circumscribed rectangle is w1, and the height of the minimum circumscribed rectangle is h1, wherein w1 is w cos α + h sin α, and the height of h1 is w sin α + h cos α, wherein α is an included angle between the mosaic screen and the x axis, α is greater than or equal to 0 ° and less than or equal to 90 °, w is the width of the display screen, and h is the height of the display screen;
2) as shown in fig. 4, rotating the display screen in step 1) counterclockwise by α, and then calculating a minimum circumscribed rectangle shown by a dashed box in fig. 4, where the minimum circumscribed rectangle has a width w2 and a height h2, w2 ═ w1 × cos α + h1 sin α, a height h2 ═ w1 × sin α + h1 × cos α, and α is greater than or equal to 0 ° and less than or equal to 90 °;
3) obtaining the minimum circumscribed rectangle of the minimum circumscribed rectangle in the step 2), wherein the minimum circumscribed rectangle has the width of w3 and the height of h3, wherein w3 is w2 × cos α + h2 × sin α, and the height of h3 is w2 × sin α + h2 × cos α, and cutting is performed by using the minimum circumscribed rectangle to obtain the display content of the maximum dotted frame shown in fig. 5, and α is not less than 0 ° and not more than 90 °;
4) according to the proportion of the original image and the display screens, calculating the actual coordinate position of the display screens in the original image (namely the position of the content displayed by each display screen in the original image), cutting the original image to obtain the display content (the content in a solid frame in fig. 6) in the display screens, namely obtaining sub-images displayed in the display screens; the specific calculation method is as follows: the width of the display screen on the original image (the width of the content displayed on the display screen on the original image) W4 ═ W3 xL1, the height of the display screen on the original image (the height of the content displayed on the display screen on the original image) H4 ═ H3xL2, wherein L1 is the ratio of the original image to the canvas in width, and L2 is the ratio of the original image to the canvas in height, wherein L1 ═ W/W ', L2 ═ H/H', W represents the pixels of the original image in width, H represents the pixels of the original image in height, W 'represents the pixels of the canvas in width, and H' represents the pixels of the canvas in height;
5) rotating the sub-image in the step 4) clockwise by an angle α, wherein the angle α is related to the graphic that the user wants to display, and generally, α is greater than or equal to 0 ° and less than or equal to 90 °, so as to obtain the final playing content of the display screen as shown in fig. 7;
6) according to the method, the content of the original image to be displayed on the other display screens is cut out in sequence, that is, the positions of all the sub-images are determined, and after the cutting of the content displayed on all the display screens is finished, the sub-images obtained by cutting out the original image can be sent to the display device to be displayed in the display device, specifically, the sub-images can be a fishbone image shown in fig. 8, or other special-shaped splicing matrixes shown in fig. 9 and 10, and the like.
Example 3
The method in embodiment 3 is applicable to both conventional and unconventional shaped tiled display screens, which are shown in fig. 11. The embodiment is the same as the embodiment 2 in that specific position coordinates of display screens forming the special-shaped tiled display screen or the special-shaped tiled matrix on a canvas are known, the embodiment adopts 6 display screens arranged in a fishbone shape as shown in fig. 11, and an external square as the canvas to determine coordinates and angles of the display screens. After the specific coordinates of each display screen on the canvas are determined, since the placement positions of the display screens may be inclined, the coordinates of the display screens on the original image, or the coordinates of the content displayed by the display screens on the original image, are determined, and then the original image content is cut and distributed to the display screens, which includes the following specific steps.
Calculating the coordinate of each display screen on the original image according to the size of a canvas forming the special-shaped pattern, the size of the original image and the coordinates (x, y, w, h) of a plurality of display screens on the canvas, wherein x represents the abscissa of a point at a certain angle on the display screen, y represents the ordinate of a point at a certain angle on the display screen, w is the width of the display screen, and h is the height of the display screen;
specifically, step 1, construct a canvas that can set up any width and height, use the upper left corner as the origin, the pattern shown in fig. 11 is formed by six pattern concatenations, and every pattern all shows on a display screen in these six patterns, therefore, in the scheme that this application embodiment provided, in order to show this fishbone pattern, 6 display screens are required to show, six display screens are display screen 1, display screen 2, display screen 3, display screen 4, display screen 5 and display screen 6 respectively, six display screen concatenations are in a canvas for the fishbone pattern, use the upper left corner of canvas as the origin, according to the positional relationship of six display screens in the canvas, obtain the coordinate of every display screen on the canvas.
And 2, determining the position of each display screen on the original image according to the preset proportional relation between the original image and the canvas.
The 6 display screens in this embodiment are placed in the shape shown in fig. 11, and the external square is used as a canvas to determine the coordinates and angles of the display screens, and then the coordinates of the display screens on the original image are found out according to the proportional relationship between the original image and the canvas.
As shown in fig. 12, at this time, none of the 6 display screens rotates, the upper left corner of the canvas is the origin 0, and the coordinates of the display screen 1 at a certain corner (which may be the upper left corner in specific implementation) in the canvas are (x, y); the canvas is rotated by α degrees, at this time, because the display screen is arranged on the canvas, the display screen is also rotated by α degrees along with the canvas, as shown in fig. 13, at this time, the position of the display screen 1 at the upper left corner in the canvas changes, the new coordinate is (x1, y1), and because the origin coordinate of the canvas also changes, the new coordinate needs to be calculated.
As shown in fig. 14, in the O1 coordinate system, coordinates of a are (X, y), and coordinates of B are (cos α X + sin α y, sin α O1C-sin α X + cos α y) after the canvas rotates by the angle α, where O1C is the distance from the point O1 to the point C, the O1 coordinate system represents the coordinate system before the rotation of the canvas and the display screen, a is the coordinates of one corner of the display screen before the rotation of the canvas, the O2 coordinate system represents the coordinate system after the rotation of the canvas and the display screen, B is the coordinates of the display screen after the rotation of the canvas corresponding to a, and C represents the intersection point of the positive direction of the X axis of the O1 coordinate system and the positive direction of the X axis of the O2 coordinate system.
And 3, through the steps, the position relation between the display screen and the rotated canvas is clarified, and according to the proportional relation between the size of the current canvas and the original image, for example, the coordinate of the upper left corner of the display screen after the canvas is rotated is (x1, y1), and the ratio between the canvas and the original image is 1: 2; then the coordinates of the display screen on the canvas are (2x1, 2y1), i.e. the canvas and the original image need to be brought into one-to-one correspondence, so as to ensure the accuracy of the coordinate position.
Step 4, repeating the steps 2 and 3, finding out the coordinates of the rest upper right corner, lower right corner and lower left corner of the display screen 1 after the original image is rotated, and further finding out the content of the corresponding position of the display screen 1 on the original image;
step 5, repeating the steps 2, 3 and 4 to find out the corresponding contents of the rest display screens, such as the display screen 2, the display screen 3, the display screen 4, the display screen 5 and the display screen 6, on the original image;
and 6, pushing the content in the original image to different display devices according to the preset display screen number, so that each display device displays corresponding different content.
When using the system, a user can select standard splicing, namely the method in embodiment 1 of the present invention, or special-shaped splicing, namely the methods in embodiments 2 and 3 of the present invention. The user can then act according to specific needs.
In the solutions provided in the embodiments of the present application, the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the scheme provided by the invention, a database of the image processing output device stores a plurality of special-shaped splicing patterns, for example, the special-shaped splicing patterns include fishbones, reverse fishbones and the like, and the image processing output device can be connected with an input device (such as a keyboard and a mouse), or the image processing output device can be provided with an input module (such as a touch display screen), the image processing output device receives splicing pattern information input by a user through the input device or the input module, and the user can complete information confirmation of the splicing patterns through any one of the following two ways according to the information.
The first method is as follows: the method comprises the steps of selecting a final spliced special-shaped pattern style from a database by splicing style information input by a user, acquiring the final spliced special-shaped pattern style, for example, if the name of the splicing style input by the user is a fishbone diagram, determining the final spliced special-shaped pattern style from the database by image processing output equipment according to the name of the fishbone diagram to be in a fishbone diagram shape, and finding out the splicing style of the fishbone diagram.
The second method comprises the following steps: the method comprises the steps that a user inputs basic information of a splicing pattern, inputs the basic information into a database, generates a pattern of a finally spliced special-shaped pattern, for example, if the user inputs information such as the name of the splicing pattern, the size of canvas, the number of display screens, coordinates of the screens on the canvas, angles and the like, an image processing output device inputs the information into the database, and the pattern of the finally spliced special-shaped pattern is determined.
After the mode of the finally spliced images is determined, when the image processing output equipment receives the input original image, the coordinates of the display screen on the original image are obtained according to the size of the original image forming the special-shaped pattern, the size of the canvas, the number of the display screens and the coordinates on the canvas. By utilizing the technical scheme of the invention, the problem that high-definition image content can not be displayed on a low-cost display screen in the prior art can be solved, and the content display of the special-shaped image can be realized.
Claims (10)
1. An image display stitching method is characterized in that: the method comprises the following steps:
s1, segmenting the original image according to the number of the display screens forming the splicing matrix to obtain a plurality of sub-images, wherein the number of the sub-images is equal to that of the display screens;
s2, determining the coordinates of the display screen corresponding to each sub-image in the original image;
and S3, sending the original image to a display screen for display according to the coordinates.
2. The image display stitching method according to claim 1, characterized in that: the step S2 specifically includes: the coordinates of each display screen on the original image are M 'N' (x (M-1) × W/M, y (N-1) × H/N, W: W/M, H: H/N), wherein M 'N' represents the coordinates of the display screen on the original image, x represents the abscissa of any corner of the display screen, y represents the ordinate of the corner, W is the width of the display screen, H is the height of the display screen, M is the number of the display screens arranged transversely, N is the number of the display screens arranged longitudinally, W is the pixels of the original image transversely, and H is the pixels of the original image longitudinally.
3. The image display stitching method according to claim 1, characterized in that: the step S2 specifically includes:
s21, determining a minimum circumscribed rectangle of a display screen, where the minimum circumscribed rectangle has a width w1 and a height h1, where w1 is w × cos α + h × sin α, and h1 is w × sin α + h × cos α, where α is an angle formed by the display screen and an axis x in a reverse direction, α is not less than 0 ° and not more than 90 °, w is the width of the display screen, and h is the height of the display screen;
s22, counterclockwise rotating the display screen in step S21 by α, and obtaining the minimum circumscribed rectangle of the minimum circumscribed rectangle in step S21, where the minimum circumscribed rectangle has a width w2 and a height h2, w2 ═ w1 × cos α + h1 sin α, a height h2 ═ w1 × sin α + h1 × cos α, and α is greater than or equal to 0 ° and less than or equal to 90 °;
s23, calculating the minimum circumscribed rectangle in step S22, where the minimum circumscribed rectangle has a width w3 and a height h3, where w3 is w2 cos α + h2 sin α, the height h3 is w2 sin α + h2 cos α, and α is greater than or equal to 0 ° and less than or equal to 90 °;
s24, cutting the display screen by using the minimum circumscribed rectangle in the step S23;
s25, calculating the coordinate position of the display screen according to the proportion of the original image to the display screen, and cutting the original image to obtain a plurality of sub-images;
s26, clockwise rotating the sub-image in the step S25 by an angle alpha which is more than or equal to 0 degrees and less than or equal to 90 degrees.
4. The image display stitching method according to claim 3, characterized in that: the step S25 specifically includes: the width W4 of the display screen on the original image is W3 xL1, the height H4 of the display screen on the original image is H3xL2, wherein L1 is the ratio of the width of the original image to the width of the canvas, L2 is the ratio of the height of the original image to the height of the canvas, wherein L1 is W/W ', L2 is H/H', W is the number of pixels in the horizontal direction of the original image, H is the number of pixels in the vertical direction of the original image, W 'represents the pixel width of the canvas, and H' represents the pixel height of the canvas.
5. The image display stitching method according to claim 1, characterized in that: the step S2 specifically includes:
s21', rotating the canvas by an angle α, wherein the coordinates of any angle B of the display screen are (cos α X + sin α y, sin α O1C-sin α X + cos α y), wherein O1C is the distance from point O1 to point C, O1 coordinate system represents the coordinate system before the canvas and display screen are rotated, O2 coordinate system represents the coordinate system after the canvas and display screen are rotated, C represents the intersection of the X-axis forward direction of the O1 coordinate system and the X-axis forward direction of the O2 coordinate system, X is the abscissa of a point a before the canvas rotation corresponding to B, and y is the ordinate of a point a before the canvas rotation corresponding B;
s22', determining the coordinate of the display screen on the original image according to the proportional relation between the size of the current canvas and the original image;
s23', repeating the above steps, finding out the coordinates of each corner of all display screens, and determining the content of the display screen correspondingly displayed on the original image.
6. The image display stitching method according to claim 5, characterized in that: and the point B in the display screen is a coordinate point of the display screen at the upper left corner of the display screen in the canvas.
7. An image stitching display system, characterized in that: the image mosaic display method for any one of claims 1-6, said device comprising: the image processing and outputting device comprises at least two display screens, the image processing and outputting device is used for determining the positions of the display screens on an original image, cutting the original image to obtain a plurality of sub-images and sending the sub-images to the display device, and the display device is used for receiving the display content of the image and displaying the display content on the display screens.
8. The image stitching display system of claim 7, wherein: the image processing output equipment cuts, rotates and scales the original image to generate sub-images and sends the sub-images to each display screen.
9. The image stitching display system according to claim 7 or 8, wherein: the spliced matrix formed by the display screens in the display equipment is rectangular or special-shaped.
10. The image stitching display system according to claim 7 or 8, wherein: the image processing output device is a computer.
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