CN112000402B - VMS screen content management method, device and storage medium - Google Patents

VMS screen content management method, device and storage medium Download PDF

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Publication number
CN112000402B
CN112000402B CN202010626939.4A CN202010626939A CN112000402B CN 112000402 B CN112000402 B CN 112000402B CN 202010626939 A CN202010626939 A CN 202010626939A CN 112000402 B CN112000402 B CN 112000402B
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points
vms
screen
content management
mark
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CN112000402A (en
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林锦欣
方明
黄达森
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Chainzone Technology Foshan Co Ltd
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Chainzone Technology Foshan Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/451—Execution arrangements for user interfaces
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—2D [Two Dimensional] image generation
    • G06T11/40—Filling a planar surface by adding surface attributes, e.g. colour or texture
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—2D [Two Dimensional] image generation
    • G06T11/60—Editing figures and text; Combining figures or text

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • User Interface Of Digital Computer (AREA)
  • Processing Or Creating Images (AREA)

Abstract

The invention discloses a VMS screen content management method applied to IPAD; the IPAD is provided with content management software APP and a WIFI communication module; the IPAD is communicated with the VMS screen through the WIFI communication module; the content management software APP is used for generating a PMG picture file according to a VMS screen display content management method, and sending the PMG picture file to the VMS screen for display through the WIFI communication module; the invention solves the problems of high difficulty in changing the display content caused by the need of professional personnel and professional equipment to adjust the display content of the VMS screen when the display content of the VMS screen needs to be changed in the prior art. The invention provides a VMS screen content management device and a storage medium.

Description

VMS screen content management method, device and storage medium
Technical Field
The invention relates to the field of traffic information display, in particular to a VMS screen content management method, a VMS screen content management device and a storage medium.
Background
Currently, with the development of electronic technology, in the traffic field, VMS (Volatile message signs, variable information board) screens are generally used to display corresponding slogans to pedestrians, vehicle drivers, and the like, so as to remind pedestrians, vehicle drivers, and the like. In general, the display content on the VMS screen is built-in before delivery and cannot be changed at will; if the display content needs to be replaced, the VMS screen is returned to the factory to adjust the display content of the VMS screen, or a professional is provided with professional equipment to arrive at the scene to adjust the display content of the VMS screen. Because traffic conditions, weather conditions, etc. change from time to time, such as in rainy days, VMS screens are required to display to people: the road is slippery and the foot is careful in rainy days; for another example, in traffic congestion, the VMS screen is required to display to people: traffic congestion, slow down, etc. However, the display content of the existing VMS screen is complex to operate when being changed, and can be completed only by professional staff and professional equipment, and the display content cannot be changed at any time according to actual conditions, so that the VMS screen loses the installation meaning.
Disclosure of Invention
In order to overcome the defects of the prior art, one of the purposes of the invention is to provide a VMS screen content management method which can solve the problems of high difficulty in changing the display content of the VMS screen in the prior art.
The second purpose of the invention is to provide a VMS screen content management device, which can solve the problems of high difficulty in changing the display content of the VMS screen in the prior art.
The third object of the present invention is to provide a storage medium, which can solve the problems of the prior art that the replacement of the VMS screen display content is difficult.
One of the purposes of the invention is realized by adopting the following technical scheme:
a VMS screen content management method, the content management method being applied to IPAD; the IPAD is provided with a content management software APP and a WIFI communication module; the IPAD is communicated with the VMS screen through the WIFI communication module; the content management software APP is used for generating a PMG picture file according to a VMS screen display content management method, and sending the PMG picture file to the VMS screen for display through the WIFI communication module; the content management method includes the steps of:
canvas creation: creating a canvas according to information of the VMS screen, and the canvas including a plurality of markup points; the marking points in the canvas are the same as the number and arrangement modes of the pixel points of the VMS screen; setting the filling color of each mark point to be a first default color;
Editing: judging the type of the current operation, acquiring coordinate points of a touch screen in the operation process of the current operation in real time according to the type of the current operation, converting all the coordinate points into corresponding mark points when the current operation is finished, and setting the filling color of the mark points corresponding to the current operation as the corresponding color;
a transmission step: and after the editing is completed, generating a PMG picture file, and sending the PMG picture file to the VMS screen through the WIFI module, so that the VMS screen displays according to the PMG picture file.
Further, the types of operations include erasers, drawing lines, brushes, text, and fill colors; the eraser is used for setting the filling color of the selected mark point as an initial filling color; setting a line, namely setting filling colors of the selected marking points to be corresponding preset default colors, wherein center points of the marking points are on a straight line segment; the painting brush is used for setting the filling color of the selected mark point to be a corresponding preset default color; the text is used for searching and obtaining corresponding marking points according to the input text, and setting the filling color of the corresponding marking points to be a corresponding preset default color; and the filling color is used for setting the filling color of the selected mark point to be a corresponding color.
Further, the editing step includes: when the current operation is the eraser operation, coordinate points of a touch screen in the moving process of the eraser are obtained in real time, corresponding mark points are obtained according to all the coordinate points when the movement of the eraser is finished, and then the filling color of the mark points corresponding to the eraser operation is set to be an initial filling color;
when the current operation is a line drawing operation, coordinate points of a touch screen in the line drawing moving process are obtained in real time, corresponding mark points are obtained according to all the coordinate points when the line drawing operation is finished, and then filling colors of the mark points corresponding to the line drawing operation are set to be corresponding preset default colors;
when the current operation is a painting brush, coordinate points of a painting brush touch screen are obtained in real time, corresponding marking points are obtained according to all coordinate points when the painting brush operation is finished, and then filling colors of the marking points corresponding to the painting brush operation are set to be corresponding preset default colors;
when the current operation is text, searching a font lattice of each font from the system according to the input text, obtaining a corresponding mark point according to the font lattice of each font, and setting the filling color of the corresponding mark point as a corresponding preset default color;
When the current operation is the filling color, acquiring coordinate points of the touch screen in real time, obtaining corresponding marking points according to the coordinate points, and setting the filling color of the corresponding marking points as the corresponding color;
when the current operation is fill color:
step S1: in a communication area, firstly obtaining a mark point in the communication area according to an obtained coordinate point of a touch screen, taking the mark point in the communication area as a mark point to be filled, and simultaneously recording the filling color of the mark point to be filled;
step S2: searching a preset number of mark points related to the mark points to be filled by taking the mark points to be filled as the center, and marking the mark points as the mark points to be determined;
step S3: comparing the filling color of each to-be-determined mark point with the filling color of the to-be-filled mark point in sequence, and marking the to-be-determined mark point as the to-be-filled mark point when the filling color of the corresponding to-be-determined mark point is identical to the filling color of the to-be-filled mark point;
and (3) processing each mark point to be filled in sequence according to the step S2 and the step S3 until all the mark points to be filled are found out, and setting the filling colors of all the mark points to be filled as corresponding colors.
Further, the editing step includes: and after the current operation is finished, judging whether a gap exists between adjacent marking points in the marking points corresponding to the current operation, if so, searching the corresponding marking points from the canvas by a preset query method, and taking the corresponding marking points as the marking points corresponding to the current operation.
Further, the preset query method includes: firstly, selecting adjacent mark points with gaps, and connecting the centers of the adjacent mark points in a straight line; and when the distance from the center point of the marking point on the canvas to the straight line is smaller than a preset value, marking the corresponding marking point as the marking point corresponding to the current operation.
Further, the transmitting step includes: and compressing the generated PMG picture file and then sending the compressed PMG picture file to the VMS screen.
Further, the transmitting step includes: changing a compression format BGRA of the PMG picture file into BGRN; wherein B represents a blue pixel value of a mark point, G represents a green pixel value of the mark point, R represents a red pixel value of the mark point, a represents a transparency value of the mark point, and N represents a continuous, same color mark point.
Further, the marking points are round and square.
Further, when the markup point is square, the canvas creation step includes: creating a mask layer, wherein the mask layer is positioned above the canvas, and the size of the mask layer is the same as that of the canvas; the mask layer comprises a plurality of circles, wherein the number and arrangement modes of the circles are the same as those of the data and arrangement modes above the canvas; the mask layer is used for converting marked points above the canvas into circles.
Further, in the editing step, when the canvas is displayed after being edited, refreshing the canvas is realized by a minimum unit area; wherein the minimum unit area is obtained by the steps of: firstly, selecting an object on a canvas, wherein the object is display content to be moved in the canvas; then, acquiring a region where the initial position of the object is located and a coordinate range of the region where the initial position of the object is located, and acquiring a region where the end position of the object is located and a coordinate range of the region where the end position of the object is located, wherein the coordinate range comprises an upper left corner coordinate, an upper right corner coordinate, a lower left corner coordinate and a lower right corner coordinate of the region where the end position of the object is located; connecting the coordinate point of the left upper corner of the area where the initial position of the object is located and the coordinate point of the left upper corner of the area where the end position of the object is located into a line segment, and taking the line segment as the moving direction of the object; finally searching the two line segments which are furthest in the direction parallel to the line direction in which the object moves according to the direction in which the object moves, so as to obtain the minimum unit area according to the area in which the initial position of the object is located, the area in which the end position of the object is located and the area between the two line segments; the two ends of the two searched line segments are intersected with the area where the initial position of the object is located and the area where the end position of the object is located respectively.
The second purpose of the invention is realized by adopting the following technical scheme:
a VMS screen content management device comprises a memory and a processor, wherein a VMS screen content management program capable of running on the processor is stored in the memory, the VMS screen content management program is a computer program, and the steps of a VMS screen content management method adopted by one of the purposes of the invention are realized when the processor executes the VMS screen content management program.
The third purpose of the invention is realized by adopting the following technical scheme:
a storage medium, which is a computer-readable storage medium, having stored thereon a VMS screen content management program, which is a computer program, which when executed by a processor implements the steps of a VMS screen content management method as employed by one of the objects of the present invention.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the content management software APP is installed on the IPAD to provide an operation interface for staff, so that the staff can edit the display content of the VMS screen according to the operation interface, and generate a PMG picture file to be sent to the VMS screen for display through WIFI after the editing is completed, thereby solving the defect that in the prior art, the display content of the VMS screen cannot be changed randomly due to the fact that professional equipment is required to adjust the display content of the VMS screen by professional staff, and greatly reducing the threshold and difficulty of changing the display content of the VMS screen in the future.
Drawings
FIG. 1 is a schematic diagram of a canvas display provided by the present invention;
FIG. 2 is a schematic diagram of a mask layer according to the present invention;
FIG. 3 is a schematic diagram of a canvas display when the markup points are square, provided by the present invention;
FIG. 4 is a schematic diagram of a canvas provided by the present invention with gaps between selected markup points;
FIG. 5 is a schematic illustration of the vacancy-filling process of FIG. 4;
FIG. 6 is a schematic diagram of coordinate points in an area where a starting position of an object selected in a canvas provided by the present invention is located;
FIG. 7 is a schematic diagram of an area in which a start position and an end position of an object selected in a canvas according to the present invention are located;
FIG. 8 is a schematic view of the moving direction of the object in FIG. 7;
FIG. 9 is a schematic diagram of a minimum unit area of canvas refreshing of the object of FIG. 7 during movement;
FIG. 10 is a schematic diagram of connected regions in a canvas according to the present invention;
FIG. 11 is a schematic diagram showing the distribution of four mark points A related to the mark point H in FIG. 10;
FIG. 12 is a schematic diagram showing the distribution of the other four marking points A related to the marking point H in FIG. 10;
FIG. 13 is a flowchart of a VMS screen content management method provided by the present invention;
fig. 14 is a block diagram of a VMS screen content management device according to the present invention.
In the figure: 11. a memory; 12. a processor; 13. a communication bus; 14. a network interface.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.
Example 1
The invention provides a VMS screen content management method, which can enable a worker to establish communication with a VMS screen by holding an IPAD (apple tablet personal computer), edit the content displayed by the VMS screen on the IPAD and send the content to the VMS screen for display, thereby reducing the threshold for changing the display content of the VMS screen and solving the defect that in the prior art, the display content of the VMS screen cannot be changed at will because professional equipment is required for adjusting the display content of the VMS screen by the replacement of the display content of the VMS screen.
Since VMS screens are typically mounted on road sides. According to the invention, the IPAD and the VMS screen are connected through WIFI (Wireless-Fidelity) communication, so that data transmission between the IPAD and the VMS screen is facilitated.
Since the VMS screen is generally an LED display screen formed by arranging a plurality of LED lamps with gaps, the screen resolution is large. The IPAD has a smaller screen and a smaller resolution. If the display content edited on the IPAD is directly sent to the VMS screen for display, the display effect of the VMS screen is poor due to the different resolutions of the two screens. Therefore, the invention develops a content management software APP (Application) on the IPAD, and provides a corresponding operation interface for staff through the content management software APP, so that the staff edits the display content of the VMS screen through the operation interface provided by the content management software APP, and sends the edited display content to the VMS screen for display. The content management software APP is an edit of display content specially developed for the VMS screen.
When a worker needs to update the display content of the VMS screen, the worker holds the IPAD by hand and establishes connection between the IPAD and the VMS screen through WIFI, so that data communication is performed between the IPAD and the VMS screen through WIFI; then opening content management software APP installed on the IPAD, and editing content to be displayed on the VMS screen on an operation interface provided by the content management software APP; and then storing the edited display content to generate a PMG picture file and sending the PMG picture file to the VMS screen through WIFI, so that the VMS screen displays according to the PMG picture file. The PMG refers to a picture format in which picture data of a plurality of pieces of lattice data are collected. The pictures in the format all comprise attributes such as access patterns, play speeds, dwell times and the like. The PMG picture file is dedicated to storing display contents of the VMS screen.
As shown in fig. 13, the present invention provides a VMS screen content management method, which is applied to an IPAD, comprising the steps of:
step S1, inputting information of a VMS screen and creating a canvas according to the information of the VMS screen by opening display content management software APP, wherein the canvas comprises a plurality of mark points. The number and arrangement modes of the marking points in the canvas and the pixel points in the VMS screen are the same.
That is, each markup point on the canvas represents one pixel point on the VMS screen, where one pixel point of the VMS screen represents one LED lamp in the screen. The display color of the pixel points on the VMS screen, namely the display color of the LED lamp, is determined by setting the filling color of the mark points, so that the editing of the display content of the VMS screen is realized.
The invention edits the content to be displayed on the IPAD by a worker, and then sends the edited content to the VMS screen for display. Generally, when the VMS screen is powered on, the corresponding color is displayed on the screen through the corresponding LED lamp so as to display the corresponding content. Visually, the pixel is formed by combining round pixels. Therefore, in order to enable the staff to edit the color display of the mark points on the canvas, the mark points are set to be round, so that the display effect on the canvas is consistent with the display effect of the VMS screen, and good visual experience is provided for the staff.
For example, when the pixels of the VMS screen are 28×28, that is, the VMS screen includes 28×28 LED lamps, the canvas is provided with 28×28 markup points.
Preferably, the marker points are circular.
When creating the canvas, the fill color of the markup point is set to the initial fill color. Typically, the initial fill color of the marker points is black. When a certain mark point is selected, the filling color of the mark point is set to be red according to the requirement. When the editing is completed, the file is sent to the VMS screen, and the corresponding LED lamp on the VMS screen is also displayed in red, so that the display content of the VMS screen is replaced through the IPAD. As shown in fig. 1, letters are displayed in the canvas: and filling the corresponding mark points into corresponding colors for display, and displaying corresponding letters by controlling corresponding LED lamps on the VMS screen after the edited content is sent to the VMS screen.
When creating the canvas, the API interface of the IOS system is called through the display content management APP to draw a circle on the canvas as a mark point. However, it is found that when a circle is drawn on the IPAD, the memory consumption is too large, which easily causes system crash and even death, and seriously affects the operation and experience of staff.
Preferably, the markup points on the canvas in the present invention are preferably square, as shown in FIG. 3, and the canvas displays a schematic diagram of the letter "SLOWDOWN". When the canvas is created on the display content management software APP, the corresponding API interface is drawn by the display content management software APP, and the square is used as a mark point, so that the system performance can be greatly improved, and the system is prevented from being blocked.
To ensure that the display effect of the IPAD markup point is consistent with the display effect on the VMS screen, the present invention creates a mask layer at the same time as creating the canvas.
Wherein the size of the mask layer is the same as the canvas size. The mask layer includes a plurality of circular formations having gaps. The number and arrangement of the circles on the mask layer are the same as those of the squares on the canvas, as shown in fig. 2. The mask layer is arranged above the canvas, and the circle of the mask layer covers the corresponding square on the canvas.
According to the invention, the mask layer is arranged above the canvas, and the redundant part of each square on the canvas and the gaps between the squares are covered by the mask layer, so that the marking points on the canvas are changed into circles by the mask layer, and the display effect on the IPAD is consistent with the display effect on the VMS screen. For example, each circle on the mask layer is set to be transparent, the gaps between the circles are black, and square mark points on the canvas can be displayed to a user in a circular display effect through the transparent circles. As shown in fig. 1-3, fig. 3 shows the display on the canvas when no mask layer is provided, and the display on the canvas after passing through the mask layer is consistent with the display in fig. 1. Preferably, the mask layer in the invention only has the covering effect and is arranged on the upper layer of the canvas. The mask layer does not change during editing of the display content of the canvas.
S2, judging the type of the current operation, and acquiring a coordinate point of the touch screen of the operation tool in real time according to the type of the current operation; and after the current operation is finished, converting all coordinate points into marking points on the canvas, and setting the filling color of the marking points corresponding to the current operation as a preset default color. Wherein the preset default color is different from the default color described above.
Generally, the canvas is created with an initial fill color within its markup point of black. When editing on the canvas, in order to distinguish the selected mark point from the unselected mark point, the filling color of the mark point selected by operation is set to a preset default color, such as yellow, red and other corresponding colors. This distinguishes selected marker points from unselected marker points.
Operations referred to herein generally refer to various types of operations of drawing tools in a system. That is, by selecting the corresponding marking point on the canvas by using the drawing tool, the filling color of the corresponding marking point is set to the corresponding color, and editing of the display content is realized, so that the display color of the corresponding LED lamp on the VMS screen is determined.
Preferably, the types of operations to which the invention relates generally include: the operation types of the eraser, the line drawing, the painting brush, the text, the color filling and the like.
1. Eraser operation
And the eraser is used for setting the filling color of the marked points scratched by the eraser as an initial filling color. Since the operation of the eraser erases the color of the place through which it passes, the eraser in the present invention is used to set the fill color of the mark point to the initial fill color. That is, when the current operation is judged to be the eraser operation, the coordinate point of the finger touching the screen is obtained in real time; and searching corresponding mark points on the canvas according to all coordinate points of the touch screen of the finger when the eraser operation is finished, and then setting the filling color of all mark points corresponding to the eraser operation as an initial filling color.
2. Line drawing operation
And drawing a line, namely selecting marked points in the canvas in a mode of drawing a straight line on the canvas. When the current operation is judged to be the line drawing operation, acquiring coordinate points of the finger touching the screen in real time; and when the line drawing operation is finished, searching for corresponding mark points on the canvas according to all coordinate points of the touch screen by the finger, and setting the filling colors of all mark points corresponding to the line drawing operation as preset default colors.
In order to facilitate distinguishing the marking point selected by each operation from the unselected marking point and the marking points selected by other operations, preferably, the filling color of the marking point selected by each operation type is provided with a corresponding preset default color. In this way, after a mark point corresponding to a certain operation is obtained, the filling color of the mark point is set to a corresponding preset default color, so that the mark point corresponding to the operation, the unselected mark point and the mark points corresponding to other operations are distinguished.
3. Text manipulation
According to the input characters and the input characters, the dot matrix of each font in the input characters is searched in a system character library, and then the dot matrix of each font is converted into a corresponding mark point on a canvas, so that the filling color of the corresponding mark point is set as a corresponding preset default color.
4. Fill color operation
And the filling color is used for setting the filling color of the marked point on the selected canvas as the corresponding color.
The display color of the LED lamp on the VMS screen is consistent with the filling color of the corresponding mark point on the canvas, so the display color of the corresponding LED lamp on the VMS screen can be set according to the operation of the filling color.
And selecting a tool for filling the color by a finger, touching a marked point on the canvas selected by the screen, and setting the filling color of the marked point to be a corresponding color.
In addition, when displayed on the VMS screen, the color of the larger part of the LED lamps is the same, that is, the filling color of a plurality of adjacent marking points on the canvas is the same. For example, the filling colors of the marking points in a certain communication area are the same, so the filling colors of all the marking points in the communication area can be quickly set by adopting the following method, the efficiency of color setting is greatly improved, and the method specifically comprises the following steps:
when the current operation is a fill color operation: firstly, touching a screen by a finger and selecting any marking point in a communication area, and marking the marking point as a marking point to be filled; and simultaneously recording the filling color of the mark points to be filled, wherein the filling color of all the mark points in the communication area is required to be set to be red.
Initially, the filling colors of all the mark points of the communication area are initial filling colors.
Therefore, any one of the mark points in the connected area is first selected as a mark point to be filled, and the filling color thereof is recorded.
Then, searching a preset number of mark points related to the mark points to be filled around by taking the mark points to be filled as the center, marking the mark points as the mark points to be determined, and sequentially judging the filling color of each mark point to be determined and comparing the filling color of the mark points to be filled; when the filling color of the undetermined mark point is the same as that of the to-be-filled mark point, the undetermined mark point and the to-be-filled mark point are in the same communication area, and the corresponding undetermined mark point is marked as the to-be-filled mark point.
And repeatedly taking each to-be-filled mark point as a center, searching a preset number of mark points related to the corresponding to-be-filled mark points to the periphery, marking the mark points as to-be-filled mark points, judging whether the filling color of each to-be-filled mark point is the same as the filling color of the corresponding to-be-filled mark point, and marking the to-be-filled mark points as to-be-filled mark points if the filling color of each to-be-filled mark point is the same as the filling color of the corresponding to-be-filled mark point.
And setting the filling colors of all the marking points to be filled as corresponding colors until the marking points with the same filling colors cannot be found, and realizing the color filling of the communication area.
In addition, in order to ensure that repeated judgment occurs during searching, each judged mark point can be numbered. Preferably, the preset number is 8.
As shown in fig. 10, the communication regions X and Y in this figure are connected. If the filling of all the marking points in the communication area X needs to be changed:
step 1, firstly, arbitrarily selecting any marking point H in the communication area X, recording the filling color of the marking point H as an initial filling color, and simultaneously marking the marking point H as a marking point to be filled;
step 2, searching a preset number of marking points related to the marking point H around the marking point H by taking the marking point H as a center, marking the marking points to be determined, judging whether the filling color of each marking point to be determined is the same as the filling color of the marking point H, if so, indicating that the marking points to be determined are in the same communication area X with the marking point H, and marking the marking points to be determined as the marking points to be filled; if the mark points are different, continuing to judge other undetermined mark points.
Such as: when one mark point H in the communication area X is selected, the mark point H is taken as a center point, 8 mark points related to the mark point H are searched around by taking the mark point H as the center, and the filling color of each mark point is recorded and found.
The mark point related to the mark point H searched in the present invention may be set according to actual requirements. Preferably, the preset number in the present embodiment is 8. I.e. 8 marker points associated with marker point H are found. As shown in fig. 11 and 12, the 8 mark points include: the mark point A of four corners in the square area taking the mark point H as the center and the mark point A of four upper, lower, left and right of the mark point H are searched by taking the mark point H as the center.
Then judging whether the filling colors of the 8 searched mark points A are the same as those of the mark points H, if so, indicating that the mark points A and the mark points H are in the same communication area X; otherwise, it is not in the same communication area X.
Step 3, when all the marking points related to the marking point H are judged, namely all the undetermined marking points are processed: and (2) searching each to-be-filled mark point, marking the mark point related to each to-be-filled mark point as a to-be-determined mark point, judging whether the filling color of each to-be-filled mark point and the corresponding to-be-filled mark point are in the same communication area X, and marking the to-be-filled mark point if the filling color of each to-be-filled mark point and the corresponding to-be-filled mark point are in the same communication area X.
For example, after the 8 marking points a related to the marking point H are all judged, all the marking points a in the same communication area X are obtained, then 8 marking points B related to the corresponding marking points a to be filled are found according to each marking point a, whether the corresponding marking points a are in the same communication area or not is judged according to the mode of the step 2, if yes, all the marking points B in the same communication area X are obtained.
According to the method, searching is carried out until the mark points in the communication area X are not found, the searching is finished, then all the mark points in the communication area X and the filling colors of the mark points H are set to be corresponding colors, batch setting of the filling colors of the mark points in the communication area is realized, and the problems that in the prior art, a user is required to click each mark point in the communication area and set the filling colors of the mark points in the communication area, the operation efficiency is low and the like are solved. Preferably, this embodiment only gives some preferred operation types, and the operation types related to the present invention can be set according to actual requirements.
Preferably, the marked point on the selected canvas is obtained by acquiring the coordinate point of the touch screen in real time in the sliding process of the finger on the screen. Due to factors such as too fast sliding process of the finger on the screen and/or interval time for acquiring the coordinate points, the converted mark points may be discontinuous, so that gaps exist between adjacent mark points, and as shown in fig. 4, gaps exist between mark point E and mark point F. Therefore, after a certain operation is finished, judging whether gaps exist between adjacent marking points or not for all marking points corresponding to the operation, and if yes, performing bit filling operation for the gaps between the adjacent marking points.
Preferably, when the filling operation is performed on the empty space between the adjacent mark points, the method comprises the following steps:
adjacent marking points which can have gaps are selected first, and centers of the two adjacent marking points are connected in a straight line to form a line segment.
Judging whether the distance from the center point of each marking point to the line segment on the canvas is smaller than a preset value, if yes, marking the corresponding marking point as the marking point corresponding to the current operation, wherein marking points G and I exist between the marking points E and F as shown in fig. 5. Through the position supplementing operation, all marking points of each operation can be searched.
Preferably, when the mark point is circular, the preset value is a radius of the circle. When the mark point is square, the preset value is one half of the diagonal line of the square.
And S3, after editing is completed, generating a PMG picture file.
And S4, sending the PMG picture file to the VMS screen through the WIFI module, so that the VMS screen displays according to the PMG picture file.
In general, a pixel of a screen is represented by 4 bytes, i.e., an LED lamp has 4 attributes including red, blue, green, and transparency. Therefore, in general, the compression format of the PMG picture file format is BGRA, in which B represents a pixel value of blue, G represents a pixel value of green, R represents a pixel value of red, and a represents a value of transparency, each of which occupies one byte. Therefore, it is assumed that, for a PMG picture file of 112×64KB in size, when the header file 28KB is removed, the size of the PMG picture file is still relatively large after compression. When the file is sent to the VMS screen, the data transmission efficiency is very slow due to the limitation of the hardware WIFI module and the communication protocol, and the use of staff is affected.
In general, each LED light on the VMS screen, when displayed, is mostly a same color, continuous dot; meanwhile, each LED lamp generally only includes three attributes when displayed: red, blue, green, the LED lamp does not have transparency. Therefore, the invention provides a new compression method, which changes the compression format BGRA of the PMG picture file into BGRN. Where N represents the number of points that repeat consecutively. That is, the compression of a plurality of consecutive dots of the same color can reduce the compression ratio of the picture by 70% to 10% relative to the original compression method. For example, for a PMG picture file with a file size of 4.5KB, the file size is changed to 0.68KB after the PMG picture file is compressed, which significantly reduces the size of the file, and further improves the efficiency of transmitting data to the VMS screen.
That is, step S4 further includes: and compressing the generated PMG picture file and sending the compressed PMG picture file to the VMS screen, so that the VMS screen analyzes the PMG picture file and displays the PMG picture file.
Preferably, due to the IOS system of the IPAD, when displayed on the canvas, the display on the canvas cannot be fed back in time due to the too fast finger operation screen, which may cause the phenomenon of operation jamming. Therefore, the invention adopts a local refreshing mode to realize the display of the content on the canvas.
The invention only refreshes the minimum unit area to realize the display of canvas at a time. For example, when the object in the touch screen is moved by the finger, only the area passing between the starting position and the ending position of the touch screen by the finger, namely the minimum unit area, is refreshed, so that the refresh frequency and the finger operation can be ensured to be consistent, and bad experience to staff is avoided.
Specifically: the object on the canvas is first selected. Wherein, the object can be any content composed of a plurality of mark points in the canvas.
And then acquiring the region where the initial position of the object is located and the coordinate range of the region where the initial position of the object is located. Preferably, in general, the selection of the object is in a square manner, so when determining the area where the position of the object is located, the area where the start position of the object is located is also determined by square areas, such as one of the square areas shown in fig. 7 is the area where the start position of the object is located.
Preferably, the present invention determines the coordinate range of the region where the start position of the object is located with four-directional coordinate points. The four coordinate points in the four directions are an upper left corner coordinate point a, a lower left corner coordinate point B, an upper right corner coordinate point C, and a lower right corner coordinate point D, as shown in fig. 6.
And acquiring the region where the end position of the object is located and the coordinate range of the region where the end position of the object is located. As shown in fig. 7, the coordinate range of the region where the end position of the object is located is represented by four coordinate points in four directions, which are respectively: an upper left corner coordinate point a, a lower left corner coordinate point B1, an upper right corner coordinate point C1, and a lower right corner coordinate point D1.
The upper left corner coordinate point a of the start position of the object and the upper left corner coordinate point A1 of the end position of the object are connected into a line segment L1 and serve as the line direction in which the object moves, as shown in fig. 8.
And searching the two line segments which are furthest in the line direction parallel to the movement of the object according to the line direction of the movement of the object, thereby obtaining a local refreshing region according to the region where the initial position of the object is located, the region where the end position of the object is located and the region between the two line segments. Each of the two line segments intersects with an area where a start position of the object is located and an area where an end position of the object is located, as shown in fig. 9, and the two line segments are L2 and L3 respectively. The local refreshing region is a union of a region where the initial position of the object is located and a region between two line segments, and a union of a region where the end position of the object is located and a region between two line segments.
According to the invention, in the moving process, the partial area is refreshed locally, and only the passing points are refreshed and redrawn, so that the effect of the whole canvas can be displayed, the refreshed mark points are reduced to the minimum, and the refreshing efficiency of the object in the moving process is higher.
Example two
The invention provides a VMS screen content management device. As shown in fig. 14, an internal structure of the VMS screen content management apparatus according to an embodiment of the present invention is schematically shown.
In this embodiment, the VMS screen content management device may be a PC (Personal Computer ), or may be a terminal device such as a smart phone, a tablet computer, or a portable computer. The VMS screen content management device at least comprises: a processor 12, a communication bus 13, a network interface 14 and a memory 11.
The memory 11 includes at least one type of readable storage medium including flash memory, a hard disk, a multimedia card, a card memory (e.g., SD or DX memory, etc.), a magnetic memory, a magnetic disk, an optical disk, etc. The memory 11 may in some embodiments be an internal storage unit of the VMS screen content management device, such as a hard disk of the VMS screen content management device. The memory 11 may also be an external storage device of the VMS screen content management apparatus in other embodiments, such as a plug-in hard disk, smart Media Card (SMC), secure Digital (SD) Card, flash memory Card (Flash Card) or the like provided on the VMS screen content management apparatus. Further, the memory 11 may also include both an internal storage unit and an external storage device of the VMS screen content management apparatus. The memory 11 may be used not only for storing application software installed in the VMS screen content management apparatus and various types of data, such as codes of VMS screen content management programs, but also for temporarily storing data that has been output or is to be output.
The processor 12 may in some embodiments be a central processing unit (Central Processing Unit, CPU), controller, microcontroller, microprocessor or other data processing chip for running program code or processing data stored in the memory 11, for example executing VMS screen content management programs or the like.
The communication bus 13 is used to enable connection communication between these components.
The network interface 14 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface), and is typically used to establish a communication connection between the VMS screen content management device and other electronic devices.
Optionally, the VMS screen content management device may further include a user interface, which may include a Display (Display), an input unit such as a Keyboard (Keyboard), and an optional user interface may further include a standard wired interface, a wireless interface. Alternatively, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch, or the like. The display may also be referred to as a display screen or display unit, as appropriate, for displaying information processed in the VMS screen content management device and for displaying a visual user interface.
Fig. 14 shows only a VMS screen content management apparatus having components 11-14 and a VMS screen content management program, and it will be understood by those skilled in the art that the structure shown in fig. 14 does not constitute a limitation of the VMS screen content management apparatus, and may include fewer or more components than shown, or may combine certain components, or a different arrangement of components.
In the VMS screen content management apparatus embodiment shown in fig. 14, a VMS screen content management program is stored in the memory 11; the processor 12 implements the following steps when executing the VMS screen content management program stored in the memory 11:
canvas creation: creating a canvas according to information of the VMS screen, and the canvas including a plurality of markup points; the marking points in the canvas are the same as the number and arrangement modes of the pixel points of the VMS screen; setting the filling color of each mark point to be a first default color;
editing: judging the type of the current operation, acquiring coordinate points of a touch screen in the operation process of the current operation in real time according to the type of the current operation, converting all the coordinate points into corresponding mark points when the current operation is finished, and setting the filling color of the mark points corresponding to the current operation as the corresponding color;
A transmission step: and after the editing is completed, generating a PMG picture file, and sending the PMG picture file to the VMS screen through the WIFI module, so that the VMS screen displays according to the PMG picture file.
Further, the types of operations include erasers, drawing lines, brushes, text, and fill colors; the eraser is used for setting the filling color of the selected mark point as an initial filling color; setting a line, namely setting filling colors of the selected marking points to be corresponding preset default colors, wherein center points of the marking points are on a straight line segment; the painting brush is used for setting the filling color of the selected mark point to be a corresponding preset default color; the text is used for searching and obtaining corresponding marking points according to the input text, and setting the filling color of the corresponding marking points to be a corresponding preset default color; and the filling color is used for setting the filling color of the selected mark point to be a corresponding color.
Further, the editing step includes: when the current operation is the eraser operation, coordinate points of a touch screen in the moving process of the eraser are obtained in real time, corresponding mark points are obtained according to all the coordinate points when the movement of the eraser is finished, and then the filling color of the mark points corresponding to the eraser operation is set to be an initial filling color;
When the current operation is a line drawing operation, coordinate points of a touch screen in the line drawing moving process are obtained in real time, corresponding mark points are obtained according to all the coordinate points when the line drawing operation is finished, and then filling colors of the mark points corresponding to the line drawing operation are set to be corresponding preset default colors;
when the current operation is a painting brush, coordinate points of a painting brush touch screen are obtained in real time, corresponding marking points are obtained according to all coordinate points when the painting brush operation is finished, and then filling colors of the marking points corresponding to the painting brush operation are set to be corresponding preset default colors;
when the current operation is text, searching a font lattice of each font from the system according to the input text, obtaining a corresponding mark point according to the font lattice of each font, and setting the filling color of the corresponding mark point as a corresponding preset default color;
when the current operation is the filling color, acquiring coordinate points of the touch screen in real time, obtaining corresponding marking points according to the coordinate points, and setting the filling color of the corresponding marking points as the corresponding color;
when the current operation is fill color:
step S1: in a communication area, firstly obtaining a mark point in the communication area according to an obtained coordinate point of a touch screen, taking the mark point in the communication area as a mark point to be filled, and simultaneously recording the filling color of the mark point to be filled;
Step S2: then, searching and finding out the preset number of marking points related to the marking points to be filled around by taking the marking points to be filled as the center, and marking the marking points as the marking points to be determined;
step S3: comparing the filling color of each to-be-determined mark point with the filling color of the to-be-filled mark point in sequence, and marking the to-be-determined mark point as the to-be-filled mark point when the filling color of the corresponding to-be-determined mark point is identical to the filling color of the to-be-filled mark point;
and repeating the step S2 and the step S3, and sequentially processing with each mark point to be filled until all mark points to be filled are found out, and setting the filling colors of all mark points to be filled as corresponding colors.
Further, the editing step includes: and after the current operation is finished, judging whether a gap exists between adjacent marking points in the marking points corresponding to the current operation, if so, searching the corresponding marking points from the canvas by a preset query method, and taking the corresponding marking points as the marking points corresponding to the current operation.
Further, the preset query method includes: firstly, selecting adjacent mark points with gaps, and connecting the centers of the adjacent mark points in a straight line; and when the distance from the center point of the marking point on the canvas to the straight line is smaller than a preset value, marking the corresponding marking point as the marking point corresponding to the current operation.
Further, the transmitting step includes: and compressing the generated PMG picture file and then sending the compressed PMG picture file to the VMS screen.
Further, the transmitting step includes: changing a compression format BGRA of the PMG picture file into BGRN; wherein B represents a blue pixel value of a mark point, G represents a green pixel value of the mark point, R represents a red pixel value of the mark point, a represents a transparency value of the mark point, and N represents a continuous, same color mark point.
Further, the marking points are round and square.
Further, when the markup point is square, the canvas creation step includes: creating a mask layer, wherein the mask layer is positioned above the canvas, and the size of the mask layer is the same as that of the canvas; the mask layer comprises a plurality of circles, wherein the number and arrangement modes of the circles are the same as those of the data and arrangement modes above the canvas; the mask layer is used for converting marked points above the canvas into circles.
Further, in the editing step, when the canvas is displayed after being edited, refreshing the canvas is realized by a minimum unit area; wherein the minimum unit area is obtained by the steps of: firstly, selecting an object on a canvas, wherein the object is display content to be moved in the canvas; then, acquiring a region where the initial position of the object is located and a coordinate range of the region where the initial position of the object is located, and acquiring a region where the end position of the object is located and a coordinate range of the region where the end position of the object is located, wherein the coordinate range comprises an upper left corner coordinate, an upper right corner coordinate, a lower left corner coordinate and a lower right corner coordinate of the region where the end position of the object is located; connecting the coordinate point of the left upper corner of the area where the initial position of the object is located and the coordinate point of the left upper corner of the area where the end position of the object is located into a line segment, and taking the line segment as the moving direction of the object; finally searching the two line segments which are furthest in the direction parallel to the line direction in which the object moves according to the direction in which the object moves, so as to obtain the minimum unit area according to the area in which the initial position of the object is located, the area in which the end position of the object is located and the area between the two line segments; the two ends of the two searched line segments are intersected with the area where the initial position of the object is located and the area where the end position of the object is located respectively.
Example III
A storage medium, which is a computer readable storage medium, having stored thereon a VMS screen content management program, the VMS screen content management program being a computer program, which when executed by a processor implements the steps of a VMS screen content management method according to an embodiment of the invention.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are intended to be within the scope of the present invention as claimed.

Claims (12)

1. A VMS screen content management method, wherein the content management method is applied to IPAD; the IPAD is provided with a content management software APP and a WIFI communication module; the IPAD is communicated with the VMS screen through the WIFI communication module; the content management software APP is used for generating a PMG picture file according to a VMS screen display content management method, and sending the PMG picture file to the VMS screen for display through the WIFI communication module; the content management method includes the steps of:
canvas creation: creating a canvas according to information of the VMS screen, and the canvas including a plurality of markup points; the marking points in the canvas are the same as the number and arrangement modes of the pixel points of the VMS screen; setting the filling color of each mark point to be a first default color;
Editing: judging the type of the current operation, acquiring coordinate points of a touch screen in the operation process of the current operation in real time according to the type of the current operation, converting all the coordinate points into corresponding mark points when the current operation is finished, and setting the filling color of the mark points corresponding to the current operation as the corresponding color;
a transmission step: and after the editing is completed, generating a PMG picture file, and sending the PMG picture file to the VMS screen through the WIFI module, so that the VMS screen displays according to the PMG picture file.
2. The VMS screen content management method of claim 1, wherein the type of operation includes rubber, drawing lines, brushes, text, and fill colors; the eraser is used for setting the filling color of the selected mark point as an initial filling color; setting a line, namely setting filling colors of the selected marking points to be corresponding preset default colors, wherein center points of the marking points are on a straight line segment; the painting brush is used for setting the filling color of the selected mark point to be a corresponding preset default color; the text is used for searching and obtaining corresponding marking points according to the input text, and setting the filling color of the corresponding marking points to be a corresponding preset default color; and the filling color is used for setting the filling color of the selected mark point to be a corresponding color.
3. The VMS screen content management method of claim 2, wherein the editing step comprises: when the current operation is the eraser operation, coordinate points of a touch screen in the moving process of the eraser are obtained in real time, corresponding mark points are obtained according to all the coordinate points when the movement of the eraser is finished, and then the filling color of the mark points corresponding to the eraser operation is set to be an initial filling color;
when the current operation is a line drawing operation, coordinate points of a touch screen in the line drawing moving process are obtained in real time, corresponding mark points are obtained according to all the coordinate points when the line drawing operation is finished, and then filling colors of the mark points corresponding to the line drawing operation are set to be corresponding preset default colors;
when the current operation is a painting brush, coordinate points of a painting brush touch screen are obtained in real time, corresponding marking points are obtained according to all coordinate points when the painting brush operation is finished, and then filling colors of the marking points corresponding to the painting brush operation are set to be corresponding preset default colors;
when the current operation is text, searching a font lattice of each font from the system according to the input text, obtaining a corresponding mark point according to the font lattice of each font, and setting the filling color of the corresponding mark point as a corresponding preset default color;
When the current operation is the filling color, acquiring coordinate points of the touch screen in real time, obtaining corresponding marking points according to the coordinate points, and setting the filling color of the corresponding marking points as the corresponding color;
when the current operation is fill color:
step S1: in a communication area, firstly obtaining a mark point in the communication area according to an obtained coordinate point of a touch screen, taking the mark point in the communication area as a mark point to be filled, and simultaneously recording the filling color of the mark point to be filled;
step S2: searching a preset number of mark points related to the mark points to be filled by taking the mark points to be filled as the center, and marking the mark points as the mark points to be determined;
step S3: comparing the filling color of each to-be-determined mark point with the filling color of the to-be-filled mark point in sequence, and marking the to-be-determined mark point as the to-be-filled mark point when the filling color of the corresponding to-be-determined mark point is identical to the filling color of the to-be-filled mark point;
and (3) processing each mark point to be filled in sequence according to the step S2 and the step S3 until all the mark points to be filled are found out, and setting the filling colors of all the mark points to be filled as corresponding colors.
4. The VMS screen content management method of claim 1, wherein the editing step comprises: and after the current operation is finished, judging whether a gap exists between adjacent marking points in the marking points corresponding to the current operation, if so, searching the corresponding marking points from the canvas by a preset query method, and taking the corresponding marking points as the marking points corresponding to the current operation.
5. The VMS screen content management method of claim 4, wherein the preset query method comprises: firstly, selecting adjacent mark points with gaps, and connecting the centers of the adjacent mark points in a straight line; and when the distance from the center point of the marking point on the canvas to the straight line is smaller than a preset value, marking the corresponding marking point as the marking point corresponding to the current operation.
6. The VMS screen content management method of claim 1, wherein the transmitting step comprises: and compressing the generated PMG picture file and then sending the compressed PMG picture file to the VMS screen.
7. The VMS screen content management method of claim 6, wherein the transmitting step comprises: changing a compression format BGRA of the PMG picture file into BGRN; wherein B represents a blue pixel value of a mark point, G represents a green pixel value of the mark point, R represents a red pixel value of the mark point, a represents a transparency value of the mark point, and N represents a continuous, same color mark point.
8. The VMS screen content management method of claim 1, wherein the marker points are circular and square.
9. The VMS screen content management method of claim 8, wherein when the markup point is square, the canvas creation step comprises: creating a mask layer, wherein the mask layer is positioned above the canvas, and the size of the mask layer is the same as that of the canvas; the mask layer comprises a plurality of circles, wherein the number and arrangement modes of the circles are the same as those of the data and arrangement modes above the canvas; the mask layer is used for converting marked points above the canvas into circles.
10. The VMS screen content management method of claim 9, wherein in the editing step, when the canvas is displayed after editing, refreshing the canvas is achieved by a minimum unit area; wherein the minimum unit area is obtained by the steps of: firstly, selecting an object on a canvas, wherein the object is display content to be moved in the canvas; then, acquiring a region where the initial position of the object is located and a coordinate range of the region where the initial position of the object is located, and acquiring a region where the end position of the object is located and a coordinate range of the region where the end position of the object is located, wherein the coordinate range comprises an upper left corner coordinate, an upper right corner coordinate, a lower left corner coordinate and a lower right corner coordinate of the region where the end position of the object is located; connecting the coordinate point of the left upper corner of the area where the initial position of the object is located and the coordinate point of the left upper corner of the area where the end position of the object is located into a line segment, and taking the line segment as the moving direction of the object; finally searching the two line segments which are furthest in the direction parallel to the line direction in which the object moves according to the direction in which the object moves, so as to obtain the minimum unit area according to the area in which the initial position of the object is located, the area in which the end position of the object is located and the area between the two line segments; the two ends of the two searched line segments are intersected with the area where the initial position of the object is located and the area where the end position of the object is located respectively.
11. A VMS screen content management apparatus comprising a memory and a processor, said memory having stored thereon a VMS screen content management program operable on the processor, said VMS screen content management program being a computer program, characterized in that: the processor, when executing the VMS screen content management program, implements the steps of a VMS screen content management method as claimed in any one of claims 1-10.
12. A storage medium, the storage medium being a computer-readable storage medium having stored thereon a VMS screen content management program, the VMS screen content management program being a computer program, characterized in that: the VMS screen content management program, when executed by a processor, implements the steps of a VMS screen content management method as claimed in any one of claims 1 to 10.
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