CN105872418A - Method and device for superimposing a GUI (Graphical User Interface) image layer on a digital image - Google Patents
Method and device for superimposing a GUI (Graphical User Interface) image layer on a digital image Download PDFInfo
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- CN105872418A CN105872418A CN201610197402.4A CN201610197402A CN105872418A CN 105872418 A CN105872418 A CN 105872418A CN 201610197402 A CN201610197402 A CN 201610197402A CN 105872418 A CN105872418 A CN 105872418A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
- H04N5/44504—Circuit details of the additional information generator, e.g. details of the character or graphics signal generator, overlay mixing circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/488—Data services, e.g. news ticker
- H04N21/4888—Data services, e.g. news ticker for displaying teletext characters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Graphics (AREA)
- Controls And Circuits For Display Device (AREA)
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Abstract
The invention discloses a method and device for superimposing a GUI (Graphical User Interface) image layer on a digital image. The method comprises following steps of generating time sequence corresponding to resolution of the digital image at an output end; reading the digital image and the GUI image from a memory according to the time sequence, wherein the sizes of the GUI image and the digital image are the same; and superimposing the GUI image and the digital image one by one according to pixels. Through adoption of the scheme provided by the invention, GUI superposition can be realized; the function demands are satisfied; the technical realization is simple; and the various existing increasingly developing demands for displaying characters and images in monitored images can be satisfied.
Description
Technical field
The present invention relates to technical field of image processing, scheme particularly to one superposition GUI on the digital image
The method and device of layer.
Background technology
GUI (Graphical User Interface, graphic user interface), refers to the use using graphics mode to show
Family environment.Compared with Command Line Interface, graphical interfaces is the easiest to be easy-to-use.Graphical user
Interface can be at the ad-hoc location of display screen, with changing of attractive in appearance and the most dull visual message prompting User Status
Become.
The high-definition digital epoch of monitoring product have arrived at present, and man-machine becomes particularly important alternately, passes through
Showing menu and monitoring information in HD video, monitoring personnel can easily select control model and grasp scene
Basic condition.The stacked system that safety monitoring technology field is commonly used is character adding, i.e. OSD (On
Screen Display, screen menu type regulative mode), make that video image is superimposed with character or figure set
Standby.As shown time, date, corporate logo, video camera title, positional information etc. in video.OSD
In the occasion such as video superimpose technology is applied to security protection, monitoring, elevator show.
Prior art mainly has a following several ways:
(1) special character generator is used to add controller
Use the program, can be determined by used chip completely with the character of selective stacking, by cost, application
Restriction, general only 10 Arabic numerals, 26 English alphabets of capital and small letter, and a small amount of special symbol
Number, it is difficult to meet various display characters and the demand of image in the most growing monitoring image.
(2) based on FPGA (Field-Programmable Gate Array, field programmable gate array)
Superposition dot character
The program can not in video pictures the character of superposition random color arbitrary shape or pattern, need into
Row repeatedly individually superposition, needs the concrete coordinate of FPGA calculating character superposition, and FPGA dynamically detects
The edge contour coordinate of character or figure carries out limes marginis calculating, it is impossible to realize efficient GUI superposition.
The deficiencies in the prior art are: or be functionally unsatisfactory for requirement, or technically realize complexity,
Difficulty is big, thus all can not meet various display characters and the need of image in the most growing monitoring image
Ask.
Summary of the invention
The invention provides the method and device of a kind of GUI figure layer of superposition on the digital image, in order to meet mesh
Various display characters and the demand of image in front growing monitoring image.
A kind of method providing GUI figure layer of superposition on the digital image in the embodiment of the present invention, including:
The sequential corresponding with the resolution of digital picture is generated at outfan；
From memorizer, digital picture and GUI image is read by this sequential；Wherein, described GUI image with
Described digital picture size is identical；
GUI image and digital picture are according to pixels put and is overlapped one by one.
It is preferred that farther include:
When GUI image is modified, scheme with the GUI in amended GUI image more new memory
Picture.
It is overlapped one by one it is preferred that GUI image and digital picture are according to pixels put, is by GUI image
The color data according to pixels put with digital picture is overlapped one by one.
It is preferred that GUI image and digital picture are according to pixels put be overlapped one by one time, as follows
One of or a combination thereof be overlapped:
When GUI image pixel is set as complete superposition, it is this GUI image pixel after superposition；
When GUI image pixel is set as not superposition completely, it is Pixel of Digital Image point after superposition；
When GUI image pixel is set as with transparency superposition, it is Pixel of Digital Image point and this after superposition
GUI image pixel is with the pixel after transparency superposition.
It is preferred that described memorizer is Double Data Rate synchronous DRAM.
It is preferred that read digital picture and GUI image chronologically from memorizer, it is chronologically from memorizer
Middle reading one frame of digital image and a frame GUI image；
Farther include: after reading a frame of digital image and a frame GUI image chronologically from memorizer, will
This digital picture and GUI image are cached in two FIFO respectively；
GUI image and digital picture are according to pixels put and is overlapped one by one, be to read GUI from two FIFO
The pixel number evidence of image and digital picture, and according to pixels put and be overlapped one by one.
The embodiment of the present invention provides the device of a kind of GUI figure layer of superposition on the digital image, including:
Generation module, for generating the sequential corresponding with the resolution of digital picture at outfan；
Read module, for reading digital picture and GUI image by this sequential from memorizer；Wherein, institute
State GUI image identical with described digital picture size；
Laminating module, is overlapped one by one for GUI image and digital picture according to pixels being put.
It is preferred that farther include:
More new module, for when modifying GUI image, updates with amended GUI image and deposits
GUI image in reservoir.
It is preferred that laminating module is further used for number of colours GUI image and digital picture according to pixels put
According to being overlapped one by one.
It is preferred that laminating module is further used for according to pixels putting to enter one by one by GUI image and digital picture
During row superposition, one of as follows or a combination thereof is overlapped:
When GUI image pixel is set as complete superposition, it is this GUI image pixel after superposition；
When GUI image pixel is set as not superposition completely, it is Pixel of Digital Image point after superposition；
When GUI image pixel is set as with transparency superposition, it is Pixel of Digital Image point and this after superposition
GUI image pixel is with the pixel after transparency superposition.
It is preferred that read module is further used for by this sequential from Double Data Rate synchronous DRAM
Middle reading digital picture and GUI image.
It is preferred that read module is further used for reading a frame of digital image and chronologically from memorizer
After frame GUI image, this digital picture and GUI image are cached to respectively two FIFO (First Input First
Output, FIFO) in；
Laminating module is further used for reading GUI image and the pixel number of digital picture from two FIFO
According to, and according to pixels put and be overlapped one by one.
The present invention has the beneficial effect that:
Owing at outfan, reading from memorizer according to the sequential that the resolution with digital picture generated is corresponding
Take digital picture and the GUI image of formed objects, and GUI image and digital picture are according to pixels put one by one
It is overlapped, uses this programme can realize GUI superposition, functionally meet requirement, technically realize letter
Single, it is thus possible to meet various display characters and the demand of image in the most growing monitoring image.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes of the present invention
Point, the schematic description and description of the present invention is used for explaining the present invention, is not intended that to the present invention not
Work as restriction.In the accompanying drawings:
Fig. 1 is the method implementing procedure signal of superposition GUI figure layer on the digital image in the embodiment of the present invention
Figure；
Fig. 2 is that the method for superposition GUI figure layer on the digital image in the embodiment of the present invention is embodied as flow process and shows
It is intended to；
Fig. 3 is the apparatus structure schematic diagram of superposition GUI figure layer on the digital image in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is illustrated.
Inventor note that during invention
The scheme of existing overlaying character on the digital image mainly has the most several:
1, special character generator is used to add controller
Simulation original image is input on special character generator chip, in superposition after the character specified, by
Special character generator chip output simulation mixed image.Whole additive process is by special character generator chip
Completing, the character of required superposition is sent out by special character generator chip interface circuit addressing characters by controller
The character stored in raw device chip internal ROM realizes.
The deficiency of the program is: can with the character of selective stacking completely by used chip determine, by cost,
The restriction of application, general only 10 Arabic numerals, 26 English alphabets of capital and small letter, and a small amount of spy
Different symbol, is difficult to meet various display characters and the demand of image in the most growing monitoring image, especially
It is the Overlapping display demand of Chinese character.To Overlapping display Chinese character, also will be outside special character generator chip
Increase rom chip, increase cost further, simultaneously because compatible between special character generator chip
Poor, it is achieved Function Extension and upgrading bother the most very much.
2, superposition dot character based on FPGA
First, it is assumed that dot character to be superimposed is made up of N x M dot matrix, wherein M is row dot matrix, and N is
Row dot matrix, M, N are positive integers.In advance the conventional characters dot character library file of generation is downloaded and stored in
The a certain memory area of dynamic memory；
Secondly, a frame of digital video image of the character to be superimposed of input is stored dynamic memory relief area
In；Search dot character to be superimposed in dynamic memory character library memory block, take out and form the of this dot character
Row of N position according to binary representation；From dynamic buffer, take out this two field picture intend overlaying character position
Corresponding N0 pixel brightness value, N0=N；
Again, if the brightness value of some pixel is Y, with 1 byte representation, the brightness of character to be superimposed
Value is constant C, with 1 byte representation, when certain in certain the row of N position forming this dot character taken out
One is 1, then change the brightness value Y of this corresponding pixel points in original image into C, if this position is 0,
Then keep the brightness value of this corresponding pixel points in original image constant, according to this principle, complete N0 pixel
The superposition of point；
Finally, take the next line N position forming this dot character, and represent with binary digit form, take out figure
As N0 the pixel brightness value that next line is corresponding, complete the superposition of N0 pixel；Repeat this process
Until all M row forming this dot character are disposed, the superposition of a dot character can be completed.
The deficiency of the program is:
First, realize obtaining ad-hoc location overlaying character at piece image, it is necessary first to know origin coordinates
(X0, Y0), the size (M, N) of overlap-add region or end coordinate (XN, YN).For monitoring
The video flowing of front end, is deposited into storing in dynamic memory relief area, then will take relief area
Resource.When being overlapped processing, needing according to origin coordinates from relief area, overlap-add region size is read
Take video data to overlap-add procedure module, need to use caching (FIFO or RAM in FPGA) herein,
Also the resource of relief area is occupied；
Secondly, the binary digit 0/1 of dot matrix represents the brightness value C that not superposition/superposition is preset, here after superposition
Image only has two kinds of possibilities, display original video image, or default brightness C and the UV component of former video
In conjunction with new color.This new color is relevant due to the UV to original video image, it is impossible to realizes user and makes by oneself
The random color of justice.
3, superposition dot character improvement project one based on FPGA
When the binary digit of dot matrix is 1, replace original Y/C component with new Y_new, UV_new.
The deficiency of the program is:
First, while reading corresponding N0 the pixel brightness value that image intends overlaying character position, also need
Chromatic component to be read, corresponding FIFO spatial cache to double；
Secondly, it is impossible to realizing the transparency superposition of overlaying character and original video image, a pixel can only be
The pixel of original image or the pixel of character, be aesthetically weak；
Again, Y_new, U_new are the parameters pre-set, and are generally fixed to picture after character adding
Some ad-hoc location (the such as upper right corner), then be exactly aobvious in some position of picture in visual effect
Show the character that a color is fixing, and general video flowing is to change always, some specific occasion characters
Color is close or identical with the color of video source, and display effect will become very poor.
4, superposition dot character improvement project two based on FPGA
The transparent of character adding is increased on the basis of superposition dot character improvement project one based on FPGA
Degree, it is achieved superposition transparency is adjustable, i.e. user can select to carry out overlaying character from 0-100, when transparency is
When 0, represent very overlaying character, when transparency is 100, represent character not superposition, show former regarding
Frequently picture, so makes character adding show more attractive.
The deficiency of the program is: reads image and intends corresponding N0 the pixel brightness value of overlaying character position
While, it is also desirable to reading chromatic component, corresponding FIFO spatial cache to double.
5, superposition dot character improvement project three based on FPGA
Character limes marginis function is increased on the basis of another kind of improved procedure on the basis of based on scheme one, the most folded
Padding is a color, and the outline at overlaying character increases the limes marginis of another kind of color, to guarantee with former
Video image can distinguish.
The deficiency of the program is:
First, while reading corresponding N0 the pixel brightness value that image intends overlaying character position, also need
Chromatic component to be read, corresponding FIFO spatial cache to double；
Secondly, it is achieved which needs to increase the parameter of limes marginis color, calculates the marginal position of each character,
Judge that overlaying character or overlaying character edge carry out data replacement again, calculate complexity, the FPGA used
Resource is too many.
6, superposition dot character improvement project four based on FPGA
If video flowing not being deposited in dynamic memory relief area, save be stored in, read, after superposition again
The repetitive process being stored in, may select data stream collection is come in by monitoring device front end photographic head when direct
It is overlapped, it is possible to realize that character adding optional position is adjustable, size is adjustable, Color tunable, limes marginis are optional
And Color tunable, rectangular background are optional and Color tunable, then be accomplished by the positional information to video flowing and carry out
Analytical calculation timely, when video flowing arrives the coordinate needing superposition in the middle of a frame, carries out character adding.
The deficiency of the program is: the relief area taken is too many, calculates complexity, to aobvious on a picture
Showing multiple OSD region block, it is necessary to repeatedly call same module, the FPGA resource used is too many,
Gradually it is eliminated during use.
Based on this, the embodiment of the present invention proposes the scheme of a kind of GUI figure layer of superposition on the digital image, in order to
The character of superposition random color arbitrary shape or pattern in video pictures, and it is made without the most independent
Superposition, it is not necessary to the concrete coordinate of FPGA calculating character superposition, it is not necessary to FPGA dynamically detect character or
The edge contour coordinate of person's figure carries out limes marginis calculating, it is achieved efficient GUI superposition realizes efficient GUI
Superposition.Specifically described below.
Fig. 1 is the method implementing procedure schematic diagram of superposition GUI figure layer on the digital image, as it can be seen, can
To comprise the steps:
Step 101, generate the sequential corresponding with the resolution of digital picture at outfan；
Step 102, from memorizer, read digital picture and GUI image by this sequential；Wherein, described
GUI image is identical with described digital picture size；
Step 103, GUI image and digital picture are according to pixels put it is overlapped one by one.
For the enforcement of step 101, by outfan according to VESA (Video Electronics Standards
Association, VESA) standard produces the sequential corresponding with the resolution of digital picture,
This sequential is for reading image from memorizer.
For the enforcement of step 102, digital picture can be from front end camera collection to dynamic menu,
Can also be the video that comes of computer transmission, or a simply width pure color picture, do not limit.
GUI image is identical with digital picture size, can be covered with any character, figure above, and color is permissible
Different.Such as, when needs are at the red time character of upper left corner superposition one, and lower right corner superposition one is greenly
Point character, one yellow of superposition is circular in the middle of picture and when blue rectangle, it would be desirable to the character of superposition,
Graphics overlay is on GUI image, and will need not region other a kind of color filling, the shape of superposition
Become the GUI image that a width is complete.
Digital picture and need the GUI image of superposition to be stored on memorizer, size be need display point
Resolution size, such as 1920x1080.Sequential according to producing reads two respectively from the address that memorizer is corresponding
Two field picture, a frame is digital picture, and another frame is GUI image.
For the enforcement of step 103, the two width images read by identical sequential are that point is right at synchronization
Point.Read the data of first pixel, carry out after the data of the pixel of GUI image are judged
Superposition, obtains first pixel number evidence after superposition, such as, if image resolution ratio is 1920x1080,
Obtain the pixel number evidence after 1920x1080 superposition of a two field picture the most successively.
According to pixels put and be overlapped including a variety of mode one by one, such as: be of the prior art according to dot matrix letter
Breath " 0 " or " 1 " carries out color replacement, and the color of replacement is the color (such as white) of additionally configuration；
Or, directly will go on the color addition of GUI to color of image.
Being real-time and continuous print owing to exporting image to display screen, the most above-mentioned implementation process can be placed on defeated
Go out end to realize；Further, in practice, general each delivery outlet has only to take the buffer area of maximum 4M
Realize purpose.
In enforcement, it is also possible to farther include:
When GUI image is modified, scheme with the GUI in amended GUI image more new memory
Picture.
Concrete, after what a GUI image user sets, typically will not often change, but new at needs
The when of increasing or change the character of superposition, figure, only the GUI image in memorizer need to be updated i.e.
Can.
In being embodied as, user can a certain position be newly-increased or superposition is wanted in amendment on web interface painting canvas
Character or figure after, by application layer, the dot matrix of character or figure is handed down to system layer, system is soft
Dot matrix is converted into color data and leaves memorizer in by part；Outfan produce standard time sequence, according to produce time
Sequence reads two two field pictures respectively from the address that memorizer is corresponding, and a frame is digital picture, and another frame is GUI
Image, is overlapped after judging the data of the pixel of GUI image, obtains first after superposition
Pixel number evidence, if image resolution ratio is 1920x1080, obtains 1920x1080 of a two field picture successively
Pixel number evidence after superposition.Owing to being the software layer conversion being responsible for realizing dot matrix to color, it is possible to achieve
Need to do the when of increasing newly or change the character of superposition, figure once to update, and FPGA avoids the need for often
One frame carries out the computing of complexity.
In above-mentioned implementation process, (pixel clock refers to root to there may be the time delay of several pixel clock
According to VESA standard, each resolution has the clock of correspondence, if 1920x1080p refresh rate is 60 frames, right
The clock answered is 148.5MHz), now standard time sequence is done corresponding delay and just can align with view data.
In enforcement, GUI image and digital picture are according to pixels put and is overlapped one by one, be by GUI image
The color data according to pixels put with digital picture is overlapped one by one.
Concrete, for FPGA system, GUI image is exactly a normal image of width, is indifferent to word
Symbol, the profile of figure, color, coordinate, be only concerned the color of each point of GUI image.
In enforcement, GUI image and digital picture are according to pixels put be overlapped one by one time, can be by as follows
One of mode or a combination thereof are overlapped:
When GUI image pixel is set as complete superposition, it is this GUI image pixel after superposition；
When GUI image pixel is set as not superposition completely, it is Pixel of Digital Image point after superposition；
When GUI image pixel is set as with transparency superposition, it is Pixel of Digital Image point and this after superposition
GUI image pixel is with the pixel after transparency superposition.
Concrete, GUI image supports three kinds of stacked systems: the complete superposition of selectivity, not superposition completely, with
Transparency superposition.
The complete superposition of selectivity: the key parameter of this pixel can be set as " complete superposition reference color ",
When there is complete superposition reference color in GUI figure layer, this pixel after superposition shows entirely by reference to color.As:
Complete superposition reference color is set to redness, then as long as color is red character or figure in GUI image
Shape, will show by correspondence position on the image after superposition completely.
Not superposition completely: the key parameter of this pixel can be set as " base map not superposition reference color completely ",
This pixel display digit figure when base map not superposition reference color completely occurs in GUI figure layer, after superposition
Picture.As: base map not superposition reference color completely is set to light blue, then as long as color is in GUI image
Nattier blue character or figure, this part would not be added in digital picture.Be equivalent in effect engrave
Empty.
With transparency superposition: the key parameter of this pixel can be set as " transparency ", in GUI figure layer
The color of pixel be not belonging to need the color of special handling, unified as transparency overlay layer, with " transparent
Degree " it is overlapped with digital picture.Transparency scope in FPGA is 0-128 herein, in application layer
Scope can be mapped to 0-100 or 0-10.Superposition Formula is: o_data=(i_ratio*i_data_gui
+i_data*(128-i_ratio))/128.In above formula: i_ratio is transparency, i_data_gui is that GUI is saturating
Bright superimposed layer data, i_data is Digital Image Data, and o_data is data after overlap-add procedure.Transparency sets
When putting difference, Overlay is different.If transparency is set to 128, be equivalent to not superposition completely；If it is transparent
Degree is set to 0, is equivalent to the complete superposition of selectivity；If transparency is set to 64, after superposition, show a half
Word image half GUI image.
In enforcement, memorizer can be Double Data Rate synchronous DRAM.
Concrete, digital picture and need the GUI figure layer of superposition can be stored in DDR SDRAM
(Double Data Rate Synchronous Dynamic Random Access Memory, Double Data Rate is same
Step dynamic RAM) on because DDR has used more advanced synchronous circuit, make appointment address,
Conveying and the output key step of data both independently executed, and kept and CPU Complete Synchronization again；DDR uses
DLL (Delay Locked Loop, delay locked loop) technology, it is provided that a data filtering signal,
When data are effective, storage control can use this data filtering signal to be accurately positioned data, every 16
Once, and re-synchronization is from the data of different memory module in secondary output.DDR substantially need not carry
High clock frequency just can double to improve the speed of SDRAM, and it allows in the rising edge of clock pulses and decline
Along reading data, thus its speed is the twice of standard SDRAM.
In enforcement, from memorizer, read digital picture and GUI image chronologically, be chronologically from memorizer
Middle reading one frame of digital image and a frame GUI image；
Farther include: after reading a frame of digital image and a frame GUI image chronologically from memorizer, will
This digital picture and GUI image are cached in two FIFO respectively；
GUI image and digital picture are according to pixels put and is overlapped one by one, be to read GUI from two FIFO
The pixel number evidence of image and digital picture, and according to pixels put and be overlapped one by one.
Concrete, by the frame of digital image read from address corresponding for DDR chronologically and frame GUI figure
As being cached in two FIFO respectively, when standard time sequence arrives the position of first pixel of two field picture,
First Digital Image Data corresponding to pixel and GUI image data is taken out from two FIFO, right
The data of the pixel of GUI image are overlapped after judging, obtain first pixel number after superposition
According to, if image resolution ratio is 1920x1080, after obtaining 1920x1080 superposition of a two field picture successively
Pixel number evidence.
In order to be more clearly understood that the present invention, illustrate with specific embodiment below.
Assuming that digital image resolution is 1920x1080, DDR SDRAM selected by memorizer, is embodied as
As shown below.
Fig. 2 is that the method for superposition GUI figure layer on the digital image is embodied as schematic flow sheet, as it can be seen,
May include steps of:
The conventional character pattern generated is stored the setting memory block of dynamic memory by step 201, CPU
In territory；
The character pattern of the GUI image that needs to be added to is stored by step 202, application layer from the setting of memorizer
Region is downloaded；
Step 203, by download the character pattern needing superposition be converted to YC422 form image pixel letter
Breath storage is to GUI dynamic buffering district；
Step 204, the pixel formation that the image pixel after conversion is added the setpoint color filled and digitized map
GUI image as formed objects；
Step 205, arrange with the complete superposition of selectivity, not superposition completely, arbitrary with transparency superposition or its
Compound mode is overlapped；
Step 206, generation refresh rate are 60 frames, and corresponding clock is the sequential of 148.5MHz；
Step 207, according to produce sequential read two two field pictures, a frame respectively from the address that memorizer is corresponding
For digital picture, another frame is GUI image, and is cached to Digital Image Data FIFO and GUI respectively
View data FIFO；
Step 208, arrive the position of the pixel of a two field picture according to standard time sequence, come from digital picture number
According to FIFO and GUI image data FIFO takes out Digital Image Data corresponding to this pixel and GUI figure
As data；
Step 209, judge the stacked system that this pixel is arranged, if the complete superposition of selectivity, proceed to step
Rapid 210, if selectivity not superposition completely, proceed to step 211, if with transparency superposition, proceed to step
Rapid 212；
Pixel after step 210, superposition is this GUI image pixel, proceeds to step 213；
Pixel after step 211, superposition is Pixel of Digital Image point, proceeds to step 213；
Pixel after step 212, superposition is Pixel of Digital Image point with this GUI image pixel to arrange
Transparency superposition after pixel, proceed to step 213；
Step 213, judge whether sequential reaches the 1920x1080 pixel, if so, proceed to step 214,
If it is not, proceed to step 208；
Step 214, judge output enable whether open, if so, proceed to step 215, if it is not, proceed to step
Rapid 216；
Step 215, this two field picture is exported to DA (Digital To Analog, digital-to-analogue conversion) chip and
Display terminal；
Step 216, end.
In the present embodiment, output timing once starts, can be automatically into step 207.
In the above-described embodiment, if showing for mosaic screen, it is also possible to the superposition one simultaneously of multiple delivery outlets
Big character splices Overlapping display on multiple screens, applies more extensive.
Based on same inventive concept, the embodiment of the present invention additionally provides one superposition GUI on the digital image
The device of figure layer, superposes GUI figure layer on the digital image owing to these equipment solves the principle of problem with one
Method similar, therefore the enforcement of these equipment may refer to the enforcement of method, repeats no more in place of repetition.
Fig. 3 is the apparatus structure schematic diagram of superposition GUI figure layer on the digital image, may include that in device
Generation module 301, for generating the sequential corresponding with the resolution of digital picture at outfan；
Read module 302, for reading digital picture and GUI image by this sequential from memorizer；Wherein,
Described GUI image is identical with described digital picture size；
Laminating module 303, is overlapped one by one for GUI image and digital picture according to pixels being put.
In enforcement, it is also possible to farther include:
More new module 304, for when modifying GUI image, updates with amended GUI image
GUI image in memorizer.
In enforcement, laminating module can also be further used for according to pixels putting GUI image and digital picture
Color data is overlapped one by one.
In enforcement, laminating module can also be further used for by GUI image and digital picture according to pixels point
When being overlapped one by one, one of as follows or a combination thereof is overlapped:
When GUI image pixel is set as complete superposition, it is this GUI image pixel after superposition；
When GUI image pixel is set as not superposition completely, it is Pixel of Digital Image point after superposition；
When GUI image pixel is set as with transparency superposition, it is Pixel of Digital Image point and this after superposition
GUI image pixel is with the pixel after transparency superposition.
In enforcement, read module can also be further used for by this sequential from Double Data Rate synchronous dynamic random
Memorizer reads digital picture and GUI image.
In enforcement, read module is further used for reading a frame of digital image and chronologically from memorizer
After frame GUI image, this digital picture and GUI image are cached in two FIFO respectively；
Laminating module is further used for reading GUI image and the pixel number of digital picture from two FIFO
According to, and according to pixels put and be overlapped one by one.
In sum, due at outfan, according to sequential corresponding to the resolution with digital picture generated from
Memorizer reads digital picture and the GUI image of formed objects, and GUI image and digital picture are pressed
Pixel is overlapped one by one, uses this programme can realize GUI superposition, functionally meets requirement, skill
Realize simple in art, it is thus possible to meet various display characters and image in the most growing monitoring image
Demand.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or meter
Calculation machine program product.Therefore, the present invention can use complete hardware embodiment, complete software implementation or knot
The form of the embodiment in terms of conjunction software and hardware.And, the present invention can use and wherein wrap one or more
Computer-usable storage medium containing computer usable program code (include but not limited to disk memory and
Optical memory etc.) form of the upper computer program implemented.
The present invention is with reference to method, equipment (system) and computer program product according to embodiments of the present invention
The flow chart of product and/or block diagram describe.It should be understood that can by computer program instructions flowchart and
/ or block diagram in each flow process and/or flow process in square frame and flow chart and/or block diagram and/
Or the combination of square frame.These computer program instructions can be provided to general purpose computer, special-purpose computer, embedding
The processor of formula datatron or other programmable data processing device is to produce a machine so that by calculating
The instruction that the processor of machine or other programmable data processing device performs produces for realizing at flow chart one
The device of the function specified in individual flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and computer or the process of other programmable datas can be guided to set
In the standby computer-readable memory worked in a specific way so that be stored in this computer-readable memory
Instruction produce and include the manufacture of command device, this command device realizes in one flow process or multiple of flow chart
The function specified in flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, makes
Sequence of operations step must be performed to produce computer implemented place on computer or other programmable devices
Reason, thus the instruction performed on computer or other programmable devices provides for realizing flow chart one
The step of the function specified in flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.
Claims (12)
1. the method for a superposition GUI figure layer on the digital image, it is characterised in that including:
The sequential corresponding with the resolution of digital picture is generated at outfan；
From memorizer, digital picture and GUI image is read by this sequential；Wherein, described GUI image with
Described digital picture size is identical；
GUI image and digital picture are according to pixels put and is overlapped one by one.
Method the most according to claim 1, it is characterised in that farther include:
When GUI image is modified, scheme with the GUI in amended GUI image more new memory
Picture.
Method the most according to claim 1, it is characterised in that GUI image and digital picture are pressed
Pixel is overlapped one by one, is the color data that GUI image and digital picture are according to pixels put to be carried out one by one
Superposition.
Method the most according to claim 3, it is characterised in that by GUI image and digital picture
According to pixels put when being overlapped one by one, one of as follows or a combination thereof is overlapped:
When GUI image pixel is set as complete superposition, it is this GUI image pixel after superposition；
When GUI image pixel is set as not superposition completely, it is Pixel of Digital Image point after superposition；
When GUI image pixel is set as with transparency superposition, it is Pixel of Digital Image point and this after superposition
GUI image pixel is with the pixel after transparency superposition.
Method the most according to claim 1, it is characterised in that described memorizer is that Double Data Rate is same
Step dynamic RAM.
6. according to the arbitrary described method of claim 1 to 5, it is characterised in that
From memorizer, read digital picture and GUI image chronologically, be from memorizer, read one chronologically
Frame of digital image and a frame GUI image；
Farther include: after reading a frame of digital image and a frame GUI image chronologically from memorizer, will
This digital picture and GUI image are cached in two FIFO respectively；
GUI image and digital picture are according to pixels put and is overlapped one by one, be to read GUI from two FIFO
The pixel number evidence of image and digital picture, and according to pixels put and be overlapped one by one.
7. the device of a superposition GUI figure layer on the digital image, it is characterised in that including:
Generation module, for generating the sequential corresponding with the resolution of digital picture at outfan；
Read module, for reading digital picture and GUI image by this sequential from memorizer；Wherein, institute
State GUI image identical with described digital picture size；
Laminating module, is overlapped one by one for GUI image and digital picture according to pixels being put.
Device the most according to claim 7, it is characterised in that farther include:
More new module, for when modifying GUI image, updates with amended GUI image and deposits
GUI image in reservoir.
Device the most according to claim 7, it is characterised in that laminating module be further used for by
The color data that GUI image and digital picture are according to pixels put is overlapped one by one.
Device the most according to claim 9, it is characterised in that laminating module is further used for inciting somebody to action
GUI image and digital picture are according to pixels put when being overlapped one by one, one of as follows or a combination thereof is entered
Row superposition:
When GUI image pixel is set as complete superposition, it is this GUI image pixel after superposition；
When GUI image pixel is set as not superposition completely, it is Pixel of Digital Image point after superposition；
When GUI image pixel is set as with transparency superposition, it is Pixel of Digital Image point and this after superposition
GUI image pixel is with the pixel after transparency superposition.
11. devices according to claim 7, it is characterised in that read module is further used for by this
Sequential reads digital picture and GUI image from Double Data Rate synchronous DRAM.
12. according to the arbitrary described device of claim 7 to 11, it is characterised in that
Read module is further used for reading a frame of digital image and frame GUI figure chronologically from memorizer
After Xiang, this digital picture and GUI image are cached in two FIFO respectively；
Laminating module is further used for reading GUI image and the pixel number of digital picture from two FIFO
According to, and according to pixels put and be overlapped one by one.
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