CN109308174B - Cross-screen image splicing control method - Google Patents
Cross-screen image splicing control method Download PDFInfo
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- CN109308174B CN109308174B CN201811178465.0A CN201811178465A CN109308174B CN 109308174 B CN109308174 B CN 109308174B CN 201811178465 A CN201811178465 A CN 201811178465A CN 109308174 B CN109308174 B CN 109308174B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
- G06F3/1446—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display display composed of modules, e.g. video walls
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformation in the plane of the image
- G06T3/40—Scaling the whole image or part thereof
- G06T3/4038—Scaling the whole image or part thereof for image mosaicing, i.e. plane images composed of plane sub-images
Abstract
The invention discloses a cross-screen image splicing control method, which comprises a display screen group consisting of a plurality of sub-screens and a driving module of the display screen group; the method comprises the steps that corresponding image data needing to be put are obtained through a data obtaining module, relevant sizes of a display screen and sub-screens forming the display screen are intercepted through a screen analysis unit, and then video information is projected and mapped on a virtual display interface through a data analysis module, a data simulation unit and a data segmentation unit to form a virtual projection video; dividing the virtual projection video into projection video streams consisting of a plurality of sub video streams according to the display screen group by using a data division unit; then transmitting the projection video stream to a data cache module and a controller, and throwing the sub-video stream of the projection video stream to a corresponding sub-screen for display according to the corresponding sub-screen mark by using the controller; therefore, accurate image splicing is realized, and a complete picture is formed.
Description
Technical Field
The invention belongs to the field of image splicing, and relates to a control method, in particular to a cross-screen image splicing control method.
Background
The image stitching technology is a technology for stitching a plurality of images with overlapped parts (which may be obtained at different times, different viewing angles or different sensors) into a large-scale seamless high-resolution image.
Image registration and image fusion are two key technologies for image stitching. Image registration is the basis of image fusion, and the computational load of an image registration algorithm is generally very large, so the development of an image stitching technology depends on the innovation of the image registration technology to a great extent. The early image registration technology mainly adopts a point matching method, which has low speed and low precision, often needs to manually select an initial matching point, and cannot adapt to the fusion of images with large data volume. The image stitching method is many, and different algorithm steps have certain differences, but the rough process is the same. Generally, image stitching mainly comprises the following five steps:
image preprocessing
The method comprises the basic operations of digital image processing (such as denoising, edge extraction, histogram processing and the like), establishing a matching template of an image, performing certain transformation (such as Fourier transformation, wavelet transformation and the like) on the image and the like.
Two, image registration
The method is characterized in that a certain matching strategy is adopted to find out the corresponding positions of templates or characteristic points in the images to be spliced in the reference image, and further determine the transformation relation between the two images.
Thirdly, establishing a transformation model
And calculating parameter values in the mathematical model according to the corresponding relation between the template or the image characteristics so as to establish a mathematical transformation model of the two images.
Four, unified coordinate transformation
And converting the images to be spliced into a coordinate system of the reference image according to the established mathematical conversion model to finish unified coordinate transformation.
Fifth, fusion reconstruction
And fusing the overlapped areas of the images to be spliced to obtain a spliced and reconstructed smooth seamless panoramic image.
At present, the image splicing process is troublesome, and self-repairing can not be realized when the image splicing is wrong; in order to solve the above drawbacks, a solution is proposed.
Disclosure of Invention
The invention aims to provide a cross-screen image splicing control method.
The technical problem to be solved by the invention is as follows:
(1) how to realize accurate image splicing and form a complete picture;
(2) how to monitor the result of image splicing and can judge that the image splicing has errors in time;
(3) when an error occurs in image splicing, how to automatically repair the error;
the purpose of the invention can be realized by the following technical scheme:
the cross-screen image splicing control method is characterized by comprising a display screen group consisting of a plurality of sub-screens and a driving module of the display screen group, wherein the driving module comprises a data acquisition module, a data analysis module, a data simulation unit, a data segmentation unit, a data cache module, a controller, a comparison unit, a screen control module, a display screen group, a screen analysis unit and a screen monitoring module;
the data acquisition module is used for acquiring video images to be played or spliced; the data acquisition module is used for transmitting video information to the data analysis module, and the screen analysis unit is used for acquiring size information of the display screen group in real time, wherein the size information comprises the length and width information of each sub-screen in the spliced display screen group, the length and width information of the display screen group, and the number of each row and each column of the sub-screens; marking the length information of the display screen group as A and the width information as B; marking the length information of the sub-screen as a and the width information as b; the number of each row of the sub-screens in the display screen group is marked as m, and the number of each column is marked as n; using Uij, i 1.. m, j 1.. n to denote the sub-screen at the corresponding position in the display screen group, and if U12 denotes the sub-screen in the first row and the second column;
the screen analysis unit is used for transmitting the size information of the display screen group to the data analysis module, the data analysis module receives the video information transmitted by the data acquisition module, and the data analysis module receives the size information transmitted by the screen analysis unit; the data analysis module is used for carrying out relevant processing on the size information, and the specific processing steps are as follows:
the method comprises the following steps: acquiring length information A and width information B of a display screen group in the size information;
step two: constructing a virtual display interface with the same size according to the length information A and the width information B of the display screen group;
the data analysis module is used for transmitting the virtual display interface, the video information and the size information to the data simulation unit, the data simulation unit is used for performing the following processing on the virtual display interface, the video information and the size information in combination with the data segmentation unit, and the specific processing steps are as follows:
the method comprises the following steps: projecting and mapping the video information on a virtual display interface to form a virtual projection video;
step two: acquiring length information a and width information b of a sub-screen in the size information; the number of each row of the sub-screens in the display screen group is d, and the number of each column of the sub-screens in the display screen group is f; and a corresponding sub-screen identification Uij, i 1.. d, j 1.. f;
step three: transmitting the virtual projection video and the size information to a data segmentation unit;
step four: the data dividing unit is used for dividing the virtual projection video into projection video streams formed by a plurality of sub video streams according to the display screen group according to the length information a and the width information b of the sub screens, the number m of each row of the sub screens and the number n of each column of the sub screens in the display screen group; each sub-video stream corresponds to information displayed by one sub-screen, and the sub-video stream is marked as Lij, i is 1.. d, j is 1.. f; uij and Lij are in one-to-one correspondence;
step five: transmitting the projection video stream to a data cache module and a controller;
the data cache module receives the projection video stream transmitted by the data segmentation unit and stores the projection video stream in real time;
the controller receives the projection video stream transmitted by the data segmentation unit and transmits the projection video stream to the screen control module, and the screen control module receives the projection video stream transmitted by the controller and performs related processing, and the specific steps are as follows:
the method comprises the following steps: transmitting the sub-video streams Lij in the projection video stream to corresponding sub-screens Uij one by one according to the corresponding identifiers;
step two: receiving the sub-video stream Lij by a sub-screen Uij in the display screen group and displaying the sub-video stream Lij in real time;
the screen monitoring module is used for acquiring the specific situation that the display screen group displays each sub-video stream in the projection video stream in real time, the screen detection module is used for acquiring projection information when the display screen group displays the projection video stream, the screen detection module is used for transmitting the projection information to the comparison unit, the comparison unit is used for combining the projection video stream stored by the data cache module to perform the following processing on the projection information, and the specific processing steps are as follows:
the method comprises the following steps: when detecting that each sub-screen in a display screen group displays a corresponding sub-video stream in a projection video stream, acquiring initial projection picture group information, wherein the projection picture group information comprises projection pictures displayed on a plurality of sub-screens; simultaneously acquiring an initial projection picture group consisting of a plurality of projection pictures;
step two: marking the projection pictures as Hij, i 1.. m, j 1.. n; label the initial set of projected pictures as H1;
step three: acquiring a projection video stream stored by a data cache module, and acquiring initial virtual picture group information, wherein the virtual picture group is initial picture information when the projection video stream is subjected to virtual projection; the system comprises a plurality of virtual pictures displayed on a sub-screen; simultaneously acquiring an initial virtual picture group consisting of a plurality of virtual pictures;
step four: marking the virtual picture as Kij, i 1.. m, j 1.. n; marking the initial virtual picture group as K1;
step five: comparing H1 with K1, obtaining a difference part of the H1 and the K1, obtaining the area S1 of the difference part, and judging that the picture display is normal when S1 is smaller than a preset value; and when the S1 is larger than the preset value, judging that the picture is displayed wrongly, and performing further processing, which is specifically represented as:
s1: comparing the projection picture Hij with the virtual picture Kij one by one;
s2: acquiring a difference area information group of all display difference parts in the Hij and the Kij, and marking the difference area information group as Sij, i is 1.. m, j is 1.. n; sij corresponds to Hij and Kij one by one;
s3: acquiring second projection picture group information and second virtual picture group information after a preset time interval, and marking a second projection picture in the second projection picture group information as H2ij, wherein i is 1.. m, and j is 1.. n; marking a second virtual picture within the second virtual picture group information as K2 ij;
s4: repeating steps S1-S2 to obtain a second difference area information group and marking the second difference area information group as S2 ij;
s5: calculating an average value between Sij and S2ij one by one to obtain an average difference value, and marking the average difference value as Pij, i is 1.. m, j is 1.. n; pij and Kij are in one-to-one correspondence;
s6: comparing Pij with Py, wherein Py is a preset value; and acquiring a difference area information group larger than Py and marking the difference area information group as an error information group, acquiring a virtual picture corresponding to the error information group and displaying errors, acquiring a sub-video stream corresponding to the part and displaying the sub-video stream according to the virtual picture and marking the sub-video stream as an error sub-video stream Cij, wherein i is 1.
Further, the comparison unit is used for transmitting the error sub-video stream to the controller, and the controller is used for acquiring a new sub-video stream from the data splitting unit again according to the position of the error sub-video stream;
the controller is used for marking the new sub-video stream as a substitute sub-video stream, the controller is used for transmitting the substitute sub-video stream to the screen control module, the screen control module is used for transmitting the substitute sub-video stream to a corresponding sub-screen of the display screen group to substitute the original sub-video stream, and the display screen group can restart to display all the sub-video streams when receiving the substitute sub-video stream.
The invention has the beneficial effects that:
(1) the method comprises the steps that corresponding image data needing to be put are obtained through a data obtaining module, relevant sizes of a display screen and sub-screens forming the display screen are intercepted through a screen analysis unit, and then video information is projected and mapped on a virtual display interface through a data analysis module, a data simulation unit and a data segmentation unit to form a virtual projection video; dividing the virtual projection video into projection video streams consisting of a plurality of sub video streams according to the display screen group by using a data division unit; then transmitting the projection video stream to a data cache module and a controller, and throwing the sub-video stream of the projection video stream to a corresponding sub-screen for display according to the corresponding sub-screen mark by using the controller; therefore, accurate image splicing is realized, and a complete picture is formed;
(2) meanwhile, through the arrangement of a screen detection module, a virtual projection timeline and a timeline played by a display screen group are unified, two groups of pictures which are obtained after the start and the interval of preset time are compared to obtain a difference area, and then a sub-screen is judged to have larger difference according to the difference area mean value, so that the sub-screen is judged to have errors;
(3) when detecting that a sub-screen in a display screen group has a display error, the invention retransmits the position information corresponding to the sub-screen to a data segmentation unit, and acquires the projection sub-video stream corresponding to the sub-screen again; projecting the image on a sub-screen for redisplay; the invention is simple, effective and easy to use.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a block diagram of the system of the present invention.
Detailed Description
As shown in fig. 1, the cross-screen image stitching control method includes a display screen group formed by a plurality of sub-screens and a driving module of the display screen group, wherein the driving module includes a data acquisition module, a data analysis module, a data simulation unit, a data segmentation unit, a data cache module, a controller, a comparison unit, a screen control module, a display screen group, a screen analysis unit and a screen monitoring module;
the data acquisition module is used for acquiring video images to be played or spliced; the data acquisition module is used for transmitting video information to the data analysis module, and the screen analysis unit is used for acquiring size information of the display screen group in real time, wherein the size information comprises the length and width information of each sub-screen in the spliced display screen group, the length and width information of the display screen group, and the number of each row and each column of the sub-screens; marking the length information of the display screen group as A and the width information as B; marking the length information of the sub-screen as a and the width information as b; the number of each row of the sub-screens in the display screen group is marked as m, and the number of each column is marked as n; using Uij, i 1.. m, j 1.. n to denote the sub-screen at the corresponding position in the display screen group, and if U12 denotes the sub-screen in the first row and the second column;
the screen analysis unit is used for transmitting the size information of the display screen group to the data analysis module, the data analysis module receives the video information transmitted by the data acquisition module, and the data analysis module receives the size information transmitted by the screen analysis unit; the data analysis module is used for carrying out relevant processing on the size information, and the specific processing steps are as follows:
the method comprises the following steps: acquiring length information A and width information B of a display screen group in the size information;
step two: constructing a virtual display interface with the same size according to the length information A and the width information B of the display screen group;
the data analysis module is used for transmitting the virtual display interface, the video information and the size information to the data simulation unit, the data simulation unit is used for performing the following processing on the virtual display interface, the video information and the size information in combination with the data segmentation unit, and the specific processing steps are as follows:
the method comprises the following steps: projecting and mapping the video information on a virtual display interface to form a virtual projection video;
step two: acquiring length information a and width information b of a sub-screen in the size information; the number of each row of the sub-screens in the display screen group is d, and the number of each column of the sub-screens in the display screen group is f; and a corresponding sub-screen identification Uij, i 1.. d, j 1.. f;
step three: transmitting the virtual projection video and the size information to a data segmentation unit;
step four: the data dividing unit is used for dividing the virtual projection video into projection video streams formed by a plurality of sub video streams according to the display screen group according to the length information a and the width information b of the sub screens, the number m of each row of the sub screens and the number n of each column of the sub screens in the display screen group; each sub-video stream corresponds to information displayed by one sub-screen, and the sub-video stream is marked as Lij, i is 1.. d, j is 1.. f; uij and Lij are in one-to-one correspondence;
step five: transmitting the projection video stream to a data cache module and a controller;
the data cache module receives the projection video stream transmitted by the data segmentation unit and stores the projection video stream in real time;
the controller receives the projection video stream transmitted by the data segmentation unit and transmits the projection video stream to the screen control module, and the screen control module receives the projection video stream transmitted by the controller and performs related processing, and the specific steps are as follows:
the method comprises the following steps: transmitting the sub-video streams Lij in the projection video stream to corresponding sub-screens Uij one by one according to the corresponding identifiers;
step two: receiving the sub-video stream Lij by a sub-screen Uij in the display screen group and displaying the sub-video stream Lij in real time;
the screen monitoring module is used for acquiring the specific situation that the display screen group displays each sub-video stream in the projection video stream in real time, the screen detection module is used for acquiring projection information when the display screen group displays the projection video stream, the screen detection module is used for transmitting the projection information to the comparison unit, the comparison unit is used for combining the projection video stream stored by the data cache module to perform the following processing on the projection information, and the specific processing steps are as follows:
the method comprises the following steps: when detecting that each sub-screen in a display screen group displays a corresponding sub-video stream in a projection video stream, acquiring initial projection picture group information, wherein the projection picture group information comprises projection pictures displayed on a plurality of sub-screens; simultaneously acquiring an initial projection picture group consisting of a plurality of projection pictures;
step two: marking the projection pictures as Hij, i 1.. m, j 1.. n; label the initial set of projected pictures as H1;
step three: acquiring a projection video stream stored by a data cache module, and acquiring initial virtual picture group information, wherein the virtual picture group is initial picture information when the projection video stream is subjected to virtual projection; the system comprises a plurality of virtual pictures displayed on a sub-screen; simultaneously acquiring an initial virtual picture group consisting of a plurality of virtual pictures;
step four: marking the virtual picture as Kij, i 1.. m, j 1.. n; marking the initial virtual picture group as K1;
step five: comparing H1 with K1, obtaining a difference part of the H1 and the K1, obtaining the area S1 of the difference part, and judging that the picture display is normal when S1 is smaller than a preset value; and when the S1 is larger than the preset value, judging that the picture is displayed wrongly, and performing further processing, which is specifically represented as:
s1: comparing the projection picture Hij with the virtual picture Kij one by one;
s2: acquiring a difference area information group of all display difference parts in the Hij and the Kij, and marking the difference area information group as Sij, i is 1.. m, j is 1.. n; sij corresponds to Hij and Kij one by one;
s3: acquiring second projection picture group information and second virtual picture group information after a preset time interval, and marking a second projection picture in the second projection picture group information as H2ij, wherein i is 1.. m, and j is 1.. n; marking a second virtual picture within the second virtual picture group information as K2 ij;
s4: repeating steps S1-S2 to obtain a second difference area information group and marking the second difference area information group as S2 ij;
s5: calculating an average value between Sij and S2ij one by one to obtain an average difference value, and marking the average difference value as Pij, i is 1.. m, j is 1.. n; pij and Kij are in one-to-one correspondence;
s6: comparing Pij with Py, wherein Py is a preset value; acquiring a difference area information group larger than Py and marking the difference area information group as an error information group, acquiring a virtual picture corresponding to the error information group and displaying errors, acquiring a sub-video stream corresponding to the part and displaying the sub-video stream according to the virtual picture displaying the errors, and marking the sub-video stream as an error sub-video stream Cij, wherein i is 1.
The comparison unit is used for transmitting the error sub-video stream to the controller, the controller is used for acquiring a new sub-video stream from the data segmentation unit again according to the position of the error sub-video stream, the controller is used for marking the new sub-video stream as a substitute sub-video stream, the controller is used for transmitting the substitute sub-video stream to the screen control module, the screen control module is used for transmitting the substitute sub-video stream to a corresponding sub-screen of the display screen group to substitute the original sub-video stream, and the display screen group can restart to display all the sub-video streams when receiving the substitute sub-video stream.
When the cross-screen image splicing control method works, firstly, image data needing to be played or spliced is obtained through a data acquisition module, meanwhile, the relevant sizes of a display screen and a sub-screen forming the display screen are intercepted through a screen analysis unit, and then video information is projected and mapped on a virtual display interface through a data analysis module, a data simulation unit and a data segmentation unit to form a virtual projection video; dividing the virtual projection video into projection video streams consisting of a plurality of sub video streams according to the display screen group by using a data division unit; then transmitting the projection video stream to a data cache module and a controller, and throwing the sub-video stream of the projection video stream to a corresponding sub-screen for display according to the corresponding sub-screen mark by using the controller; and then, detecting whether the projected sub-video stream has an error condition by using a screen detection module, and re-acquiring the sub-video stream information corresponding to the word screen for displaying when the error is judged according to the relevant rules.
The invention has the following beneficial effects:
(1) the method comprises the steps that corresponding image data needing to be put are obtained through a data obtaining module, relevant sizes of a display screen and sub-screens forming the display screen are intercepted through a screen analysis unit, and then video information is projected and mapped on a virtual display interface through a data analysis module, a data simulation unit and a data segmentation unit to form a virtual projection video; dividing the virtual projection video into projection video streams consisting of a plurality of sub video streams according to the display screen group by using a data division unit; then transmitting the projection video stream to a data cache module and a controller, and throwing the sub-video stream of the projection video stream to a corresponding sub-screen for display according to the corresponding sub-screen mark by using the controller; therefore, accurate image splicing is realized, and a complete picture is formed;
(2) meanwhile, through the arrangement of a screen detection module, a virtual projection timeline and a timeline played by a display screen group are unified, two groups of pictures which are obtained after the start and the interval of preset time are compared to obtain a difference area, and then a sub-screen is judged to have larger difference according to the difference area mean value, so that the sub-screen is judged to have errors;
(3) when detecting that a sub-screen in a display screen group has a display error, the invention retransmits the position information corresponding to the sub-screen to a data segmentation unit, and acquires the projection sub-video stream corresponding to the sub-screen again; projecting the image on a sub-screen for redisplay; the invention is simple, effective and easy to use.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (1)
1. The cross-screen image splicing control method is characterized by comprising a display screen group consisting of a plurality of sub-screens and a driving module of the display screen group;
the driving module comprises a data acquisition module, a data analysis module, a data simulation unit, a data segmentation unit, a data cache module, a controller, a comparison unit, a screen control module, a display screen group, a screen analysis unit and a screen monitoring module;
the data acquisition module is used for acquiring video images to be played or spliced; the data acquisition module is used for transmitting video information to the data analysis module, and the screen analysis unit is used for acquiring size information of the display screen group in real time, wherein the size information comprises the length and width information of each sub-screen in the spliced display screen group, the length and width information of the display screen group, and the number of each row and each column of the sub-screens; marking the length information of the display screen group as A and the width information as B; marking the length information of the sub-screen as a and the width information as b; the number of each row of the sub-screens in the display screen group is marked as m, and the number of each column is marked as n; using Uij, i =1.. m, j =1.. n to represent the sub-screen at the corresponding position in the display screen group, and if U12 represents the sub-screen at the first row and the second column;
the screen analysis unit is used for transmitting the size information of the display screen group to the data analysis module, the data analysis module receives the video information transmitted by the data acquisition module, and the data analysis module receives the size information transmitted by the screen analysis unit; the data analysis module is used for carrying out relevant processing on the size information, and the specific processing steps are as follows:
the method comprises the following steps: acquiring length information A and width information B of a display screen group in the size information;
step two: constructing a virtual display interface with the same size according to the length information A and the width information B of the display screen group;
the data analysis module is used for transmitting the virtual display interface, the video information and the size information to the data simulation unit, the data simulation unit is used for performing the following processing on the virtual display interface, the video information and the size information in combination with the data segmentation unit, and the specific processing steps are as follows:
the method comprises the following steps: projecting and mapping the video information on a virtual display interface to form a virtual projection video;
step two: acquiring length information a and width information b of a sub-screen in the size information; the number of each row of the sub-screens in the display screen group is d, and the number of each column of the sub-screens in the display screen group is f; and a corresponding sub-screen identification Uij, i =1.. d, j =1.. f;
step three: transmitting the virtual projection video and the size information to a data segmentation unit;
step four: the data dividing unit is used for dividing the virtual projection video into projection video streams formed by a plurality of sub video streams according to the display screen group according to the length information a and the width information b of the sub screens, the number m of each row of the sub screens and the number n of each column of the sub screens in the display screen group; each sub-video stream corresponds to information displayed by one sub-screen, and the sub-video streams are marked as Lij, i =1.. d, j =1.. f; uij and Lij are in one-to-one correspondence;
step five: transmitting the projection video stream to a data cache module and a controller;
the data cache module receives the projection video stream transmitted by the data segmentation unit and stores the projection video stream in real time;
the controller receives the projection video stream transmitted by the data segmentation unit and transmits the projection video stream to the screen control module, and the screen control module receives the projection video stream transmitted by the controller and performs related processing, and the specific steps are as follows:
the method comprises the following steps: transmitting the sub-video streams Lij in the projection video stream to corresponding sub-screens Uij one by one according to the corresponding identifiers;
step two: receiving the sub-video stream Lij by a sub-screen Uij in the display screen group and displaying the sub-video stream Lij in real time;
the screen monitoring module is used for acquiring the specific situation that the display screen group displays each sub-video stream in the projection video stream in real time, the screen detection module is used for acquiring projection information when the display screen group displays the projection video stream, the screen detection module is used for transmitting the projection information to the comparison unit, the comparison unit is used for combining the projection video stream stored by the data cache module to perform the following processing on the projection information, and the specific processing steps are as follows:
the method comprises the following steps: when detecting that each sub-screen in a display screen group displays a corresponding sub-video stream in a projection video stream, acquiring initial projection picture group information, wherein the projection picture group information comprises projection pictures displayed on a plurality of sub-screens; simultaneously acquiring an initial projection picture group consisting of a plurality of projection pictures;
step two: marking the projection picture as Hij, i =1.. m, j =1.. n; label the initial set of projected pictures as H1;
step three: acquiring a projection video stream stored by a data cache module, and acquiring initial virtual picture group information, wherein the virtual picture group is initial picture information when the projection video stream is subjected to virtual projection; the system comprises a plurality of virtual pictures displayed on a sub-screen; simultaneously acquiring an initial virtual picture group consisting of a plurality of virtual pictures;
step four: marking the virtual picture as Kij, i =1.. m, j =1.. n; marking the initial virtual picture group as K1;
step five: comparing H1 with K1, obtaining a difference part of the H1 and the K1, obtaining the area S1 of the difference part, and judging that the picture display is normal when S1 is smaller than a preset value; and when the S1 is larger than the preset value, judging that the picture is displayed wrongly, and performing further processing, which is specifically represented as:
s1: comparing the projection picture Hij with the virtual picture Kij one by one;
s2: acquiring a difference area information group of all display difference parts in the Hij and the Kij, and marking the difference area information group as Sij, i =1.. m, j =1.. n; sij corresponds to Hij and Kij one by one;
s3: acquiring second projection picture group information and second virtual picture group information after a preset time interval, and marking a second projection picture in the second projection picture group information as H2ij, wherein i =1.. m, and j =1.. n; marking a second virtual picture within the second virtual picture group information as K2 ij;
s4: repeating steps S1-S2 to obtain a second difference area information group and marking the second difference area information group as S2 ij;
s5: calculating an average value between Sij and S2ij one by one to obtain an average difference value, and marking the average difference value as Pij, i =1.. m, j =1.. n; pij and Kij are in one-to-one correspondence;
s6: comparing Pij with Py, wherein Py is a preset value; acquiring a difference area information group larger than Py and marking the difference area information group as an error information group, acquiring a virtual picture corresponding to the error information group and displaying errors, acquiring a sub-video stream corresponding to the part and displaying the sub-video stream according to the virtual picture displaying errors, and marking the sub-video stream as an error sub-video stream Cij, wherein i =1.. m, and j =1.. n;
the comparison unit is used for transmitting the error sub-video stream to the controller, and the controller is used for acquiring a new sub-video stream from the data segmentation unit again according to the position of the error sub-video stream;
the controller is used for marking the new sub-video stream as a substitute sub-video stream, the controller is used for transmitting the substitute sub-video stream to the screen control module, the screen control module is used for transmitting the substitute sub-video stream to a corresponding sub-screen of the display screen group to substitute the original sub-video stream, and the display screen group can restart to display all the sub-video streams when receiving the substitute sub-video stream.
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| CN110047037B (en) * | 2019-04-26 | 2022-11-25 | 湖南科技学院 | Cloud computing-based image-assisted virtual splicing system |
| CN111161283B (en) * | 2019-12-26 | 2023-08-04 | 可牛网络技术（北京）有限公司 | Picture resource processing method and device and electronic equipment |
| CN111372009B (en) * | 2020-03-31 | 2021-09-14 | 联想(北京)有限公司 | Image processing method and processing equipment |
| CN111613162B (en) * | 2020-05-20 | 2023-12-05 | 利亚德光电股份有限公司 | Fault detection method and device, LED display and storage medium |
| CN111988650B (en) * | 2020-08-14 | 2022-11-04 | 乐视新生代(北京)文化传媒有限公司 | Video playing method, device, equipment and storage medium of three-dimensional screen |
| CN113504963B (en) * | 2021-07-23 | 2022-11-01 | 深圳掌酷软件有限公司 | APP interface transmission display method, device, equipment and storage medium |
| CN113920951A (en) * | 2021-09-15 | 2022-01-11 | 上海祺壹智能科技有限公司 | Method for refreshing screen with low current |
| CN115826898B (en) * | 2023-01-03 | 2023-04-28 | 南京芯驰半导体科技有限公司 | Cross-screen display method, system, device, equipment and storage medium |
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