CN109634547A - A kind of mosaic screen changes the method and system of image size according to viewer's quantity - Google Patents
A kind of mosaic screen changes the method and system of image size according to viewer's quantity Download PDFInfo
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- CN109634547A CN109634547A CN201811535071.6A CN201811535071A CN109634547A CN 109634547 A CN109634547 A CN 109634547A CN 201811535071 A CN201811535071 A CN 201811535071A CN 109634547 A CN109634547 A CN 109634547A
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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
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/325—Power saving in peripheral device
- G06F1/3265—Power saving in display device
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
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Abstract
The invention discloses a kind of mosaic screens to change the method and system of image size according to viewer's quantity, specifically includes the following steps: obtaining the video data of camera in real time, identifies the human body quantity in viewing areas；Judge whether human body quantity is greater than preset threshold；If it is not, calculating corresponding display picture size, and pass through the image information after a superposition window display scaling in mosaic screen by preset number and image display scale rule；If so, generating the human body overlay area in viewing areas, the ratio of human body overlay area and viewing areas is calculated；According to ratio, calculate the centre-height of display image, and mosaic screen corresponding position by a superposition window display scale the constant and maximized image information of size.When viewing user is more, the display centre height of mosaic screen is turned up；When user is less, full screen image, which is shown, to be reduced, and convenient for direct viewing and is reduced the energy consumption that shows of full screen image, is conducive to the long-time service of mosaic screen.
Description
Technical field
The invention belongs to the technical fields of mosaic display screen, and in particular to a kind of mosaic screen changes shadow according to viewer's quantity
As the method and system of size.
Background technique
With the high speed development of display technology, mosaic screen comes into being, and mosaic screen, which can be realized to become larger, also to become smaller
Changeable large-size screen monitors function: single screen segmentation display, single screen is individually shown, any combination is shown, full frame liquid crystal-spliced, vertical screen display etc.
Display effect, therefore mosaic screen is widely used in puting on display in occasion.
Since the size of single display screen itself is restricted, in order to realize that super large picture is shown, mosaic screen technology
It comes into being, mosaic screen is to be stitched together to form a big display screen using multiple display screens, and each display screen shows one
A part of image is opened, the display screen of matrix arrangement shows the very big image of breadth product jointly, can also split screen display available difference figure
Picture；Mosaic screen is widely used in the fields such as security protection, monitoring, medical treatment, radio and television, advertisement media.
But existing large-scale mosaic screen, image show that usually full screen is shown, is only used for being only suitable for seeing at a distance
It sees.When user is less and close to screen, full screen image show prevent user is from completely watching image information, and for a long time
The display energy consumption of full screen image is big, is unfavorable for the long-time service of mosaic screen.Have much room for improvement design the energy of Novel splicing screen a kind of from
Image display system on dynamic adjustment screen.
Summary of the invention
The invention aims to solve the image of existing mosaic screen to show the technical issues of being not easy to user's viewing, provide
A kind of mosaic screen changes the method and system of image size according to viewer's quantity.
To solve the above-mentioned problems, the present invention is achieved by following technical scheme:
The method that a kind of mosaic screen of the present invention changes image size according to viewer's quantity, based on the pinnacled camera shooting of setting
Head, the camera acquire the video data of viewing areas in real time, specifically includes the following steps:
Step S1: obtaining the video data of camera in real time, identifies the human body quantity in viewing areas；
Step S2: judge whether human body quantity is greater than preset threshold；If it is not, by preset number and image display scale rule,
Corresponding display picture size is calculated, and passes through the image information after a superposition window display scaling in mosaic screen；If so,
Execute step S3；
Step S3: generating the human body overlay area in viewing areas, calculates the ratio of human body overlay area and viewing areas；
Step S4: according to ratio, the centre-height of display image is calculated, and passes through a superposition window in mosaic screen corresponding position
Display scale is constant and the maximized image information of size.
Further, mosaic screen is made of several basic unit screens；The preset number and image display scale rule
Formula are as follows:
It is superimposed window size=viewing areas area × number/basic unit screen quantity；
It is superimposed length of window=basic unit screen length × superposition window size/basic unit screen dimensions；
It is superimposed window width=basic unit screen width × superposition window size/basic unit screen dimensions；
In addition to remaining mosaic screen part to be superimposed the full images after window display original image information scaled down on mosaic screen
Still show the information of original image.
Further, the step S1 specifically includes the following steps:
Step S11: obtaining the video data of camera in real time, and timing intercepts a picture frame；
Step S12: generating viewing areas on institute's truncated picture frame, detects body configuration's feature in viewing areas and carries out
Label calculates all labels and generates human body quantity；
Step S13: output human body quantity.
Further, the step S3 specifically includes the following steps:
Step S31: obtaining the picture frame with viewing areas, and the human body overlay area in viewing areas is generated in picture frame；
Step S32: converting bitmap for above-mentioned picture frame, and crowd's contour line and the sight of human body overlay area are generated in bitmap
See the contour line in region；
Step S33: the contour line inner area of the area and viewing areas in crowd's contour line is calculated, is calculated in crowd's contour line
The ratio of the contour line inner area of area and viewing areas, obtains the ratio of human body overlay area and viewing areas.
Further, generation crowd's contour line in the step S32, specifically includes the following steps:
Step S321: the pixel unit of identification described image frame is simultaneously classified, and identical and continuous pixel unit is summarized,
Multiple pixel groups are marked off on bitmap；
Step S322: color lump bitmap is converted by pixel group, multiple color lump bitmaps form the bitmap；According to crowd and floor
Colour contrast identifies the outer edge of human body overlay area in the bitmap to generate crowd's contour line.
The system that a kind of mosaic screen changes image size according to viewer's quantity, based on the pinnacled camera of setting, institute
The video data that camera acquires viewing areas in real time is stated, the system comprises:
Counting module obtains the video data of camera in real time, identifies the human body quantity in viewing areas；
Quantity monitoring module, judges whether human body quantity is greater than preset threshold；If it is not, showing ratio by preset number and image
Convention then, calculates corresponding display picture size, and be transmitted in image overlay module, described image laminating module is splicing
Screen passes through the image information after a superposition window display scaling；If so, starting region area module；
Region area module generates the human body overlay area in viewing areas, calculates human body overlay area and viewing areas
Ratio；
Image overlay module calculates the centre-height of display image according to ratio, and passes through one in mosaic screen corresponding position
It is superimposed that window display scale is constant and the maximized image information of size.
Further, mosaic screen is made of several basic unit screens；The preset number and image display scale rule
Formula are as follows:
It is superimposed window size=viewing areas area × number/basic unit screen quantity；
It is superimposed length of window=basic unit screen length × superposition window size/basic unit screen dimensions；
It is superimposed window width=basic unit screen width × superposition window size/basic unit screen dimensions；
In addition to remaining mosaic screen part to be superimposed the full images after window display original image information scaled down on mosaic screen
Still show the information of original image.
Further, counting module includes:
Timing interception unit, obtains the video data of camera in real time, and timing intercepts a picture frame；
Human bioequivalence unit generates viewing areas on institute's truncated picture frame, and the body configuration detected in viewing areas is special
It levies and is marked, calculate all labels and generate human body quantity；
Output unit, output human body quantity to quantity monitoring module.
Further, the region area module includes:
Area division unit obtains the picture frame with viewing areas, and the human body generated in viewing areas in picture frame covers
Cover area；
Described image frame is converted bitmap by conversion unit, and crowd's contour line of human body overlay area is generated in bitmap
With the contour line of viewing areas；
Areal calculation unit calculates the contour line inner area of the area and viewing areas in crowd's contour line, calculates crowd's wheel
The ratio of the contour line inner area of area and viewing areas in profile, obtains the ratio of human body overlay area and viewing areas.
Further, generation crowd's contour line in the conversion unit, specifically includes the following steps:
The pixel unit of the conversion unit identification described image frame is simultaneously classified, and identical and continuous pixel unit is converged
Always, multiple pixel groups are marked off on bitmap；
Pixel group is converted color lump bitmap by the conversion unit, and multiple color lump bitmaps form the bitmap；According to crowd and ground
The colour contrast of plate identifies the outer edge of human body overlay area in the bitmap to generate crowd's contour line.
Compared with prior art, the beneficial effects of the present invention are:
The present invention is only suitable for watching at a distance for traditional large-scale mosaic screen, when the quantity of user is more, cannot completely watch
The problem of image information.Human body quantity is acquired by the camera on mosaic screen, a superposition window is selected to show on mosaic screen
Image after original image information scaled down controls mosaic screen by acquisition viewer's quantity and shows.As viewing user
When more, the display centre height of mosaic screen is turned up；When user is less, full screen image, which is shown, to be reduced, convenient for direct
The energy consumption that viewing and reduction full screen image are shown, is conducive to the long-time service of mosaic screen.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing, in which:
The flow chart of the method and system for the image size that Fig. 1, which is a kind of mosaic screen of the invention, to be changed according to viewer's quantity.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
As shown in Figure 1, a kind of mosaic screen of the present invention changes the method for image size according to viewer's quantity and is
System.Fig. 1 is the flow chart of the preferred embodiment for the method that mosaic screen of the present invention changes image size according to viewer's quantity.
As shown in Figure 1, a kind of mosaic screen provided in an embodiment of the present invention changes the side of image size according to viewer's quantity
Method, based on pinnacled camera is arranged, the camera acquires the video data of viewing areas in real time, specifically includes following step
It is rapid:
Step S1: obtaining the video data of camera in real time, identifies the human body quantity in viewing areas.
In the present invention, mosaic screen refers to commercial large-scale mosaic screen, the over top of commercialization large size mosaic screen, or is pacifying
The space above of dress mosaic screen can install the camera for acquiring video data in advance.The control terminal of camera and mosaic screen
It is connected, the transmission of data is carried out convenient for the two, so when mosaic screen is in outdoor or indoor projected images, on mosaic screen
Camera acquires video data in real time, and human body quantity is calculated from viewing areas.
The shooting angle that camera can be first preset in the present invention, can be configured, herein simultaneously according to the actual situation
Without limiting, while the model etc. of camera quantity sum does not limit.This implementation preferably, camera acquire mosaic screen just before
The video data of side.
Mosaic screen is made of several basic unit screens in the present invention, such as a width large size mosaic screen is by 40 pieces of basic unit screens
At each basic unit screen is 55 cun of screens (can certainly be other sizes) of 16:9 ratio, and mosaic screen is according to 8 × 5
Mode is arranged.
Further, the step S1 is specifically included:
Step S11: obtaining the video data of camera in real time, and timing intercepts a picture frame；
Step S12: generating viewing areas on institute's truncated picture frame, detects body configuration's feature in viewing areas and carries out
Label calculates all labels and generates human body quantity；
Step S13: output human body quantity.
Step S2: judge whether human body quantity is greater than preset threshold；If it is not, being advised by preset number and image display scale
Then, corresponding display picture size is calculated, and passes through the image information after a superposition window display scaling in mosaic screen.If
It is then to perform the next step step S3.
It in the present invention, is monitored using camera acquisition, since viewer's flowing in commercial region is larger, if with human body
Quantity is controlled in real time, is required the control design case of mosaic screen big.For this purpose, day of the present invention is adjusted by human body quantity
Control, when the quantity for monitoring human body is calculated corresponding less than preset threshold by preset number and image display scale rule
Show picture size.Preset number equally has a number section, when floating in same interval range, splices screen protection
Original display is held, when beating in different sections, by preset number and image display scale rule, is calculated corresponding
Display size passes through the image information after a superposition window display scaling in mosaic screen.
Further, a superposition window display scaling is passed through in mosaic screen corresponding position according to the display picture size of calculating
Full images information afterwards, the size for being superimposed window are calculated according to corresponding formula, and formula can specific explanations below.It spells
Screen is connect to be made of several basic unit screens；The formula of the preset number and image display scale rule are as follows:
It is superimposed window size=viewing areas area × number/basic unit screen quantity；
It is superimposed length of window=basic unit screen length × superposition window size/basic unit screen dimensions；
It is superimposed window width=basic unit screen width × superposition window size/basic unit screen dimensions；
In addition to remaining mosaic screen part to be superimposed the full images after window display original image information scaled down on mosaic screen
Still show the information of original image.Described to state preset number be preferably 20 people, that is to say, that the human body quantity of acquisition is less than or waits
When 20 people, the data more than carry out calculating display size.When the human body quantity of calculating is less than 20 people, according to preset figure
Display size is calculated as showing example rule and superposition window size formula, obtains corresponding display picture size.
Step S3, the human body overlay area in viewing areas is generated, the ratio of human body overlay area and viewing areas is calculated.
When the number of calculating is greater than preset threshold, show that the number of scene viewing is more.It needs using another set of size
Regulation method is shown.The human body overlay area for obtaining viewing areas, calculates the area ratio in two regions.
Specifically, step S3 the following steps are included:
Step S31: obtaining the picture frame with viewing areas, and the human body overlay area in viewing areas is generated in picture frame；
Step S32: converting bitmap for above-mentioned picture frame, and crowd's contour line and the sight of human body overlay area are generated in bitmap
See the contour line in region；
Generation crowd's contour line in the step S32, specifically includes the following steps:
Step S321: the pixel unit of identification described image frame is simultaneously classified, and identical and continuous pixel unit is summarized,
Multiple pixel groups are marked off on bitmap；
Step S322: color lump bitmap is converted by pixel group, multiple color lump bitmaps form the bitmap；According to crowd and floor
Colour contrast identifies the outer edge of human body overlay area in the bitmap to generate crowd's contour line.
Step S33: the contour line inner area of the area and viewing areas in crowd's contour line is calculated, crowd's contour line is calculated
The ratio of the contour line inner area of interior area and viewing areas, obtains the ratio of human body overlay area and viewing areas.
Step S4: according to ratio, the centre-height of display image is calculated, and passes through a superposition in mosaic screen corresponding position
Window display scale is constant and the maximized image information of size.
Since viewing number is more, mosaic screen is fixed.After obtaining needs picture size ratio to be shown, it is necessary to
In the case that people is more on mosaic screen suitable position, watch complete visual angle to ensure from the viewer of mosaic screen backward.Root
According to the ratio of calculating, the centre-height of corresponding adjustment display image, and size is maximized to display in equal proportion.As far as possible
The height optimization for showing screen, guarantee that viewer can completely watch the content of display.
Wherein, above-mentioned original image information refers to the screen for not having to be superimposed entire mosaic screen when window is shown on mosaic screen
The image information of upper display, such as propaganda film or advertisement, the full images information refer to when appearance superposition window on mosaic screen
When display, image information of the display with original image information after scaled down on superposition window, that is to say, that although folded
The size (showing the size of image in other words) of adding window mouth is shown on superposition window although smaller than entire mosaic screen
Image is also complete information, such as the propaganda film shown on mosaic screen or advertisement, only this image information be by etc.
After scale smaller.
Mosaic screen of the invention includes 40 pieces of basic units with a width large size mosaic screen, and every piece of basic unit screen is 16:9 ratio
55 cun of screens of example, arrange in a manner of 8 × 5, and preset human body quantity is 20.) counted according to the human body quantity of viewing mosaic screen
There is the following two kinds according to the case where analysis:
1, when monitoring human body quantity less than 20 people:
According to preset position and image display scale rule and be superimposed window size formula to showing that size calculates, and
According to calculated result, it is shown in respectively in mosaic screen corresponding position by the full images information after a superposition window display scaling
The position of everyone face mosaic screen viewing.
The superposition window size formula are as follows:
It is superimposed window size=viewing areas area × number/basic unit screen quantity；
It is superimposed length of window=basic unit screen length × superposition window size/basic unit screen dimensions；
It is superimposed window width=basic unit screen width × superposition window size/basic unit screen dimensions；
In addition to remaining mosaic screen part to be superimposed the full images after window display original image information scaled down on mosaic screen
Still show the information of original image.
2, when monitoring that human body quantity is greater than or equal to 20 people:
The picture frame with viewing areas is obtained, the human body overlay area in viewing areas is generated in picture frame；By above-mentioned figure
As frame is converted into bitmap, and generate in bitmap crowd's contour line of human body overlay area and the contour line of viewing areas.Identification
The pixel unit of described image frame is simultaneously classified, and identical and continuous pixel unit is summarized, is marked off on bitmap multiple
Pixel group；Color lump bitmap is converted by pixel group, multiple color lump bitmaps form the bitmap；Color according to crowd and floor is anti-
Difference identifies the outer edge of human body overlay area in the bitmap to generate crowd's contour line.Area in calculating crowd's contour line and
The contour line inner area of viewing areas calculates the ratio of the contour line inner area of the area and viewing areas in crowd's contour line,
Obtain the ratio of human body overlay area and viewing areas.According to ratio, the centre-height of display image is calculated, and in mosaic screen
Window display scale is constant and the maximized image information of size by a superposition for corresponding position.
With this, the display height appropriate that mosaic screen is turned up guarantees that subsequent people can watch.
The system that a kind of mosaic screen changes image size according to viewer's quantity, based on the pinnacled camera of setting, institute
The video data that camera acquires viewing areas in real time is stated, the system comprises:
Counting module obtains the video data of camera in real time, identifies the human body quantity in viewing areas；
Quantity monitoring module, judges whether human body quantity is greater than preset threshold；If it is not, showing ratio by preset number and image
Convention then, calculates corresponding display picture size, and be transmitted in image overlay module, described image laminating module is splicing
Screen passes through the image information after a superposition window display scaling；If so, starting region area module；
Region area module generates the human body overlay area in viewing areas, calculates human body overlay area and viewing areas
Ratio；
Image overlay module calculates the centre-height of display image according to ratio, and passes through one in mosaic screen corresponding position
It is superimposed that window display scale is constant and the maximized image information of size.
Further, mosaic screen is made of several basic unit screens；The preset number and image display scale rule
Formula are as follows:
It is superimposed window size=viewing areas area × number/basic unit screen quantity；
It is superimposed length of window=basic unit screen length × superposition window size/basic unit screen dimensions；
It is superimposed window width=basic unit screen width × superposition window size/basic unit screen dimensions；
In addition to remaining mosaic screen part to be superimposed the full images after window display original image information scaled down on mosaic screen
Still show the information of original image.
Further, counting module includes:
Timing interception unit, obtains the video data of camera in real time, and timing intercepts a picture frame；
Human bioequivalence unit generates viewing areas on institute's truncated picture frame, and the body configuration detected in viewing areas is special
It levies and is marked, calculate all labels and generate human body quantity；
Output unit, output human body quantity to quantity monitoring module.
Further, the region area module includes:
Area division unit obtains the picture frame with viewing areas, and the human body generated in viewing areas in picture frame covers
Cover area；
Described image frame is converted bitmap by conversion unit, and crowd's contour line of human body overlay area is generated in bitmap
With the contour line of viewing areas；
Areal calculation unit calculates the contour line inner area of the area and viewing areas in crowd's contour line, calculates crowd's wheel
The ratio of the contour line inner area of area and viewing areas in profile, obtains the ratio of human body overlay area and viewing areas.
Further, generation crowd's contour line in the conversion unit, specifically includes the following steps:
The pixel unit of the conversion unit identification described image frame is simultaneously classified, and identical and continuous pixel unit is converged
Always, multiple pixel groups are marked off on bitmap；
Pixel group is converted color lump bitmap by the conversion unit, and multiple color lump bitmaps form the bitmap；According to crowd and ground
The colour contrast of plate identifies the outer edge of human body overlay area in the bitmap to generate crowd's contour line.
In conclusion changing the method for image size according to viewer's quantity the invention discloses a kind of mosaic screen and being
System, which comprises obtain the video data of camera in real time, identify the human body quantity in viewing areas；Judge human body number
Whether amount is greater than preset threshold；If it is not, calculating corresponding display image ruler by preset number and image display scale rule
It is very little, and pass through the image information after a superposition window display scaling in mosaic screen；If so, the human body generated in viewing areas covers
Cover area calculates the ratio of human body overlay area and viewing areas；According to ratio, the centre-height of display image is calculated, and
In mosaic screen corresponding position, by a superposition, window display scale is constant and the maximized image information of size.The present invention is for biography
The large-scale mosaic screen of system is only suitable for watching at a distance, when the quantity of user is more, cannot completely watch image information the problem of.It is logical
The camera acquisition human body quantity on mosaic screen is crossed, a superposition window is selected to show the contracting of original image information equal proportion on mosaic screen
Image after small controls mosaic screen by acquisition viewer's quantity and shows.When viewing user is more, mosaic screen is turned up
Display centre height；When user is less, full screen image, which is shown, to be reduced, and convenient for direct viewing and reduces full screen image
The energy consumption of display is conducive to the long-time service of mosaic screen.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, therefore
Without departing from the technical solutions of the present invention, according to the technical essence of the invention it is to the above embodiments it is any modification,
Equivalent variations and modification, all of which are still within the scope of the technical scheme of the invention.
Claims (10)
1. a kind of method that mosaic screen changes image size according to viewer's quantity, which is characterized in that pinnacled based on being arranged
Camera, the camera acquire the video data of viewing areas in real time, specifically includes the following steps:
Step S1: obtaining the video data of camera in real time, identifies the human body quantity in viewing areas；
Step S2: judge whether human body quantity is greater than preset threshold；If it is not, by preset number and image display scale rule,
Corresponding display picture size is calculated, and passes through the image information after a superposition window display scaling in mosaic screen；If so,
Execute step S3；
Step S3: generating the human body overlay area in viewing areas, calculates the ratio of human body overlay area and viewing areas；
Step S4: according to ratio, the centre-height of display image is calculated, and passes through a superposition window in mosaic screen corresponding position
Display scale is constant and the maximized image information of size.
2. the method that mosaic screen according to claim 1 changes image size according to viewer's quantity, which is characterized in that spell
Screen is connect to be made of several basic unit screens；The formula of the preset number and image display scale rule are as follows:
It is superimposed window size=viewing areas area × number/basic unit screen quantity；
It is superimposed length of window=basic unit screen length × superposition window size/basic unit screen dimensions；
It is superimposed window width=basic unit screen width × superposition window size/basic unit screen dimensions；
In addition to be superimposed the full images after window shows original image information scaled down, remaining mosaic screen part is still on mosaic screen
Show the information of original image.
3. the method that mosaic screen according to claim 1 changes image size according to viewer's quantity, which is characterized in that institute
State step S1 specifically includes the following steps:
Step S11: obtaining the video data of camera in real time, and timing intercepts a picture frame；
Step S12: generating viewing areas on institute's truncated picture frame, detects body configuration's feature in viewing areas and carries out
Label calculates all labels and generates human body quantity；
Step S13: output human body quantity.
4. the method that mosaic screen according to claim 3 changes image size according to viewer's quantity, which is characterized in that institute
State step S3 specifically includes the following steps:
Step S31: obtaining the picture frame with viewing areas, and the human body overlay area in viewing areas is generated in picture frame；
Step S32: converting bitmap for above-mentioned picture frame, and crowd's contour line and the sight of human body overlay area are generated in bitmap
See the contour line in region；
Step S33: the contour line inner area of the area and viewing areas in crowd's contour line is calculated, is calculated in crowd's contour line
The ratio of the contour line inner area of area and viewing areas, obtains the ratio of human body overlay area and viewing areas.
5. the method that mosaic screen according to claim 4 changes image size according to viewer's quantity, which is characterized in that institute
Generation crowd's contour line in step S32 is stated, specifically includes the following steps:
Step S321: the pixel unit of identification described image frame is simultaneously classified, and identical and continuous pixel unit is summarized,
Multiple pixel groups are marked off on bitmap；
Step S322: color lump bitmap is converted by pixel group, multiple color lump bitmaps form the bitmap；According to crowd and floor
Colour contrast identifies the outer edge of human body overlay area in the bitmap to generate crowd's contour line.
6. the system that a kind of mosaic screen changes image size according to viewer's quantity, which is characterized in that pinnacled based on being arranged
Camera, the camera acquire the video data of viewing areas in real time, the system comprises:
Counting module obtains the video data of camera in real time, identifies the human body quantity in viewing areas；
Quantity monitoring module, judges whether human body quantity is greater than preset threshold；If it is not, showing ratio by preset number and image
Convention then, calculates corresponding display picture size, and be transmitted in image overlay module, described image laminating module is splicing
Screen passes through the image information after a superposition window display scaling；If so, starting region area module；
Region area module generates the human body overlay area in viewing areas, calculates human body overlay area and viewing areas
Ratio；
Image overlay module calculates the centre-height of display image according to ratio, and passes through one in mosaic screen corresponding position
It is superimposed that window display scale is constant and the maximized image information of size.
7. the system that mosaic screen according to claim 6 changes image size according to viewer's quantity, which is characterized in that spell
Screen is connect to be made of several basic unit screens；The formula of the preset number and image display scale rule are as follows:
It is superimposed window size=viewing areas area × number/basic unit screen quantity；
It is superimposed length of window=basic unit screen length × superposition window size/basic unit screen dimensions；
It is superimposed window width=basic unit screen width × superposition window size/basic unit screen dimensions；
In addition to remaining mosaic screen part to be superimposed the full images after window display original image information scaled down on mosaic screen
Still show the information of original image.
8. the system that mosaic screen according to claim 6 changes image size according to viewer's quantity, which is characterized in that meter
Digital-to-analogue block includes:
Timing interception unit, obtains the video data of camera in real time, and timing intercepts a picture frame；
Human bioequivalence unit generates viewing areas on institute's truncated picture frame, and the body configuration detected in viewing areas is special
It levies and is marked, calculate all labels and generate human body quantity；
Output unit, output human body quantity to quantity monitoring module.
9. the system that mosaic screen according to claim 8 changes image size according to viewer's quantity, which is characterized in that institute
Stating region area module includes:
Area division unit obtains the picture frame with viewing areas, and the human body generated in viewing areas in picture frame covers
Cover area；
Described image frame is converted bitmap by conversion unit, and crowd's contour line of human body overlay area is generated in bitmap
With the contour line of viewing areas；
Areal calculation unit calculates the contour line inner area of the area and viewing areas in crowd's contour line, calculates crowd's wheel
The ratio of the contour line inner area of area and viewing areas in profile, obtains the ratio of human body overlay area and viewing areas.
10. the system that mosaic screen according to claim 9 changes image size according to viewer's quantity, which is characterized in that
Generation crowd's contour line in the conversion unit, specifically includes the following steps:
The pixel unit of the conversion unit identification described image frame is simultaneously classified, and identical and continuous pixel unit is converged
Always, multiple pixel groups are marked off on bitmap；
Pixel group is converted color lump bitmap by the conversion unit, and multiple color lump bitmaps form the bitmap；According to crowd and ground
The colour contrast of plate identifies the outer edge of human body overlay area in the bitmap to generate crowd's contour line.
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| CN111986595A (en) * | 2020-07-06 | 2020-11-24 | 佛山市京木测控科技有限公司 | Product information display method, electronic equipment and storage medium |
| CN113990214A (en) * | 2021-10-22 | 2022-01-28 | 深圳倜傥国际设计有限公司 | Modular area adjustable display system |
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| CN111986595A (en) * | 2020-07-06 | 2020-11-24 | 佛山市京木测控科技有限公司 | Product information display method, electronic equipment and storage medium |
| CN113990214A (en) * | 2021-10-22 | 2022-01-28 | 深圳倜傥国际设计有限公司 | Modular area adjustable display system |
| CN116863868A (en) * | 2023-08-31 | 2023-10-10 | 深圳市银幕光电科技有限公司 | Display control method, device and display system of large-size LED display screen for curtain wall |
| CN116863868B (en) * | 2023-08-31 | 2023-11-10 | 深圳市银幕光电科技有限公司 | Display control method, device and display system of large-size LED display screen for curtain wall |
| CN116959370A (en) * | 2023-09-19 | 2023-10-27 | 深圳市鸿茂元智光电有限公司 | LED screen display control method and system and display screen |
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