CN109688464A - A kind of video image enhancement processing method and processing system, player end - Google Patents
A kind of video image enhancement processing method and processing system, player end Download PDFInfo
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- CN109688464A CN109688464A CN201910215321.6A CN201910215321A CN109688464A CN 109688464 A CN109688464 A CN 109688464A CN 201910215321 A CN201910215321 A CN 201910215321A CN 109688464 A CN109688464 A CN 109688464A
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- 230000001965 increasing effect Effects 0.000 description 4
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Classifications
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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
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
-
- 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
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
-
- 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
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/4424—Monitoring of the internal components or processes of the client device, e.g. CPU or memory load, processing speed, timer, counter or percentage of the hard disk space used
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/646—Circuits for processing colour signals for image enhancement, e.g. vertical detail restoration, cross-colour elimination, contour correction, chrominance trapping filters
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Databases & Information Systems (AREA)
- Image Processing (AREA)
Abstract
The invention discloses a kind of video image enhancement processing method and processing systems, player end, and wherein video image enhancement processing method is comprising steps of A. decodes to obtain original played data；B. video image enhancement and rendering processing, obtain terminal plays data；Wherein video image enhancement and rendering treatment process include according to severity parameter valueEcurImage enhancement processing is carried out to original played data；C. display terminal played data；Between A and B further include: the theoretical maximum and minimum value of D. setting severity parameter value；Subjectivity effectively maximum value and the minimum value of severity parameter value are set；E. view screen present intensity value is obtained in real timeLcur；F. basisLcurDetermine severity parameter valueEcur；G. to severity parameter valueEcurIt carries out validity check and updates.The present invention adjusts the intensity of image enhancement processing according to the brightness value real-time adaptive of view screen, is not necessarily to user interactive operation, viewing effect is good, user experience is good.
Description
Technical field
The invention belongs to technical field of image processing, in particular to a kind of video image enhancement processing method and processing system
System, player end.
Background technique
In order to improve the quality of video image, viewing experience is promoted, it will usually which image enhancement processing is carried out to video image.
Image enhancement processing includes the operations such as contrast expansion, colored enhancing, filtering, details enhancing, edge enhancing.
User's viewing experience by video image quality other than being influenced, also directly by player end view screen brightness
Influence.On the mobile apparatus, the screen intensity of view screen can carry out automatic adjusument according to the light intensity of environment.Usually
In the case of, when view screen brightness is brighter, tolerance of the viewer in contrast, details, acutance is bigger；And shield playing
When curtain brightness is darker, too strong contrast, details, acutance can give the very uncomfortable feeling of people.Therefore, the final viewing sense of user
By the brightness joint effect by player end view screen when video image enhancement Processing Algorithm and viewing.
From the point of view of system implementations, video image enhancement processing operation can be realized in server end, can also be direct
It is realized in player end；From the point of view of the intensity set-up mode that video image enhancement is handled, video image enhancement processing method is divided into
Two kinds: one is fixing intensity modes, and one is the modes for manually adjusting video image enhancement processing intensity.
Server end can not be considered to see due to that can only influence video image itself to video image enhancement processing
The viewing environment for the person of seeing is unable to reach optimal image enhancement viewing experience naturally.
For player end, although directly carrying out enhancing processing to video image in player end, it can be considered that and influencing
The viewing experience of viewer, still, existing video image enhancement processing method be first preset according to multi gear position regulatory demand it is several
A video image enhancement severity parameter value, then manually select regulation stall by user, and the screen intensity of view screen be with
Ambient brightness adjust in real time, thus the fixed enhancing processing method of multi gear cannot reach optimal viewing experience.Simultaneously as
User is needed to manually adjust video image enhancement intensity, user experience is poor.
In conclusion all not accounting for the view screen brightness of player end in existing video image enhancement processing method
Factor, thus optimal user's viewing experience would generally be unable to reach there is a situation where enhancing intensity is excessive or intensity is inadequate.
Summary of the invention
It is an object of the present invention in view of the above shortcomings of the prior art, provide a kind of video image enhancement processing method
With processing system, player end, according to the brightness for the player end view screen that viewer uses, adaptive regulating video figure
The enhancing intensity of image intensifying processing, to reach optimal video image viewing experience.
In order to solve the above technical problems, the technical scheme adopted by the invention is that:
A kind of video image enhancement processing method, comprising the following steps:
Step A. decodes the video data encoder to be played from received server-side, obtains original played data；
Step B. carries out video image enhancement to original played data and rendering is handled, and obtains terminal plays data；Wherein video
Image enhancement and rendering treatment process include according to severity parameter valueEcurImage enhancement processing is carried out to original played data；
The wherein severity parameter valueEcurRefer to the set of one group of parameter, including contrast intensity adjustment parameter, brightness regulation
One of parameter, saturation degree adjustment parameter, sharpening intensities parameter, details enhancing intensive parameter are a variety of；
Step C. view screen display terminal played data；
Its main feature is that between step A and step B further include:
The theoretical maximum of step D. setting severity parameter valueEmax, severity parameter value theoretical minimum valueEmin；Intensity is set
The effective maximum value of subjectivity of parameter valueSmax, severity parameter value the effective minimum value of subjectivitySmin；Emin≤Smin<Smax≤Emax；
Step E. obtains view screen present intensity value in real timeLcur；
Step F. is according to view screen present intensity valueLcurDetermine severity parameter valueEcur；
Step G. according toSmaxWithSminTo severity parameter valueEcurCarry out validity check and renewal intensity parameter valueEcur。
It further include the screen intensity theoretical maximum for obtaining view screen as a preferred method, in the step DLmax, view screen screen intensity theoretical minimum valueLmin；In the step F, severity parameter value is determined according to the following formulaEcur:
, whereinbFor empirical coefficient.
As a preferred method, in the step G, according toSmaxWithSminTo severity parameter valueEcurCarry out validity
Check simultaneously renewal intensity parameter valueEcurProcess it is as follows:
。
As a preferred method, in the step B, by severity parameter valueEcurThe image enhancement passed in CPU is calculated
After method program, image enhancement processing is realized using CPU.
As another preferred embodiment, in the step B, by severity parameter valueEcurPass to the image enhancement in GPU
After algoritic module, image enhancement processing is realized using GPU.
Based on the same inventive concept, the present invention also provides a kind of video image enhancement processing systems, including video solution
Code module, image enhancement and rendering module, view screen, in which:
Video decoding module: for decoding the video data encoder to be played from received server-side, original played data is obtained；
Image enhancement and rendering module: for carrying out video image enhancement and rendering processing to original played data, terminal is obtained
Played data；Wherein video image enhancement and rendering treatment process include according to severity parameter valueEcurTo original played data into
Row image enhancement processing；
View screen: it is used for display terminal played data；
Further include:
Screen intensity obtains module: for obtaining view screen present intensity value in real timeLcur；
Control module: for the theoretical maximum of severity parameter value to be arrangedEmax, severity parameter value theoretical minimum valueEmin；With
In the effective maximum value of subjectivity of setting severity parameter valueSmax, severity parameter value the effective minimum value of subjectivitySmin；For basis
View screen present intensity valueLcurDetermine severity parameter valueEcur；For basisSmaxWithSminTo severity parameter valueEcurInto
Row validity check and renewal intensity parameter valueEcur。
Further, the control module is also used to obtain the screen intensity theoretical maximum of view screenLmax, play
The screen intensity theoretical minimum value of screenLmin。
Based on the same inventive concept, the present invention also provides a kind of player ends, including the video image enhancement
Processing system.
Compared with prior art, the invention has the following advantages:
Since the final viewing experience of user is by both the brightness of view screen when image enhancement effects and viewing joint effect, originally
Invention comprehensively considers two factors of view screen real-time luminosity and image enhancement processing effect, broadcasting when by obtaining viewing in real time
The brightness of screen, and according to the intensity of the brightness value real-time adaptive of view screen adjustment image enhancement processing, to reach most
Good user's viewing experience, entire enhanced processes are not necessarily to the interactive operation of user, and viewing effect is good, user experience is good.
Detailed description of the invention
Fig. 1 is that video image enhancement processing system of the present invention unifies example structure schematic diagram.
Wherein, 1 is Video decoding module, and 2 be image enhancement and rendering module, and 3 be view screen, and 4 obtain for screen intensity
Modulus block, 5 be control module.
Specific embodiment
For the clearer description present invention, the specific implementation example of the invention is provided below.
Under the premise of player end uses video image enhancement processing technique, video image enhancement processing method includes
Following steps:
Step A. decodes the video data encoder to be played from received server-side, obtains original played data.
Step B. carries out video image enhancement to original played data and rendering is handled, and obtains terminal plays data；Wherein
Video image enhancement and rendering treatment process include according to severity parameter valueEcurOriginal played data is carried out at image enhancement
Reason.The wherein severity parameter valueEcurRefer to the set of one group of parameter, including contrast intensity adjustment parameter, brightness regulation ginseng
One of number, saturation degree adjustment parameter, sharpening intensities parameter, details enhancing intensive parameter are a variety of.
3 display terminal played data of step C. view screen.
Between step A and step B further include:
The screen intensity theoretical maximum of step D. acquisition view screen 3Lmax, view screen 3 screen intensity theoretical minimum valueLmin；The theoretical maximum of severity parameter value is setEmax, severity parameter value theoretical minimum valueEmin；Severity parameter value is set
The effective maximum value of subjectivitySmax, severity parameter value the effective minimum value of subjectivitySmin；Emin≤Smin<Smax≤Emax。
Step E. obtains 3 present intensity value of view screen in real timeLcur。
Step F. is according to 3 present intensity value of view screenLcurDetermine severity parameter valueEcur:
, whereinbFor empirical coefficient.By largely testing
After obtain,bValue range are as follows: [0.0,1.0].
Step G. according toSmaxWithSminTo severity parameter valueEcurCarry out validity check and renewal intensity parameter valueEcur。
According toSmaxWithSminTo severity parameter valueEcurCarry out validity check and renewal intensity parameter valueEcurMistake
Journey is as follows:
。
In stepb, it is selected according to the mode of player end image enhancement processing:
Image enhancement processing is realized if it is using CPU, then by severity parameter valueEcurPass to the algorithm for image enhancement in CPU
After program (algorithm is usually operated on CPU in a manner of program), image enhancement processing is realized using CPU, to control image increasing
The intensity of strength reason.In such method, image enhancement processing is first carried out, then carry out image rendering processing.
Image enhancement processing is realized if it is using GPU, then by severity parameter valueEcurPass to the image enhancement in GPU
After algoritic module (the usually shader program of image enhancement processing), image enhancement processing is realized using GPU, to control image
Enhance the intensity of processing.Such method belongs to programmable rendering pipeline mode, therefore the image realized in tinter shader
Enhancing belongs to a part of render process, and image enhancement processing and rendering processing cannot be separated, also without apparent process
On tandem.Specifically, it is assumed that use GPU image enhancement mode using end is played in mobile phone, and used image increases
Strong algorithms (it is assumed that edge enhancement algorithm) can by the intensity of parameter adjustment enhancing, and intensity and the parameter value at
Proportional relation.Then by severity parameter valueEcurIt passes in the shader program (operating on mobile phone GPU) of image enhancement processing,
By severity parameter valueEcurControl the intensity of edge enhancing.After method processing in the present invention, when screen luminance of mobile phone is high
When, image edge enhancing it is obvious that and when the screen of mobile phone is dark, image border enhancing degree also drop therewith
It is low.
In the present invention, the theoretical maximum of severity parameter value, which refers to, considers the maximum that can be got in mathematical computations angle
Value, the theoretical minimum value of severity parameter value, which refers to, considers the minimum value that can be got in mathematical computations angle, in general, severity parameter value
Theoretical minimum value be 0(i.e. to pixel value without modification), the theoretical maximum of severity parameter value is 2n- 1(n is pixel bit
Depth).For example, the pixel that 8 bits indicate, the theoretical maximum of severity parameter value are 28- 1=255, severity parameter value
Theoretical minimum value be 0.
Effective maximum value of severity parameter value refers to human eye subjective sensation undistorted (or being distorted in tolerance interval)
Enhance critical strength.It can be obtained by following mode, in the subjective testing of algorithm for image enhancement, by being gradually increased figure
Image intensifying intensity, human eye subjective sensation image is undistorted under current intensity, and image can obvious perceptual distortion under next intensity
When, then current enhancing intensity is effective maximum value.Effective minimum value of severity parameter value, refer to human eye can distinguish image with
Original image (non-reinforced processing) discrepant enhancing critical strength.It can be obtained by following mode, be calculated in image enhancement
In the subjective testing of method, by being gradually increased image enhancement intensity, when human eye can distinguish that image has with original image (non-reinforced)
Difference, enhancing intensity at this time are effective minimum value.
As shown in Figure 1, the present invention also provides a kind of video image enhancement processing system, including Video decoding module 1, figure
Image intensifying and rendering module 2, view screen 3, in which:
Video decoding module 1: for decoding the video data encoder to be played from received server-side, original broadcasting number is obtained
According to；
Image enhancement and rendering module 2: for carrying out video image enhancement and rendering processing to original played data, terminal is obtained
Played data；Wherein video image enhancement and rendering treatment process include according to severity parameter valueEcurTo original played data into
Row image enhancement processing；
View screen 3: it is used for display terminal played data；
Screen intensity obtains module 4: for obtaining 3 present intensity value of view screen in real timeLcur；
Control module 5: for obtaining the screen intensity theoretical maximum of view screen 3Lmax, view screen 3 screen intensity reason
By minimum valueLmin；For the theoretical maximum of severity parameter value to be arrangedEmax, severity parameter value theoretical minimum valueEmin；With
In the effective maximum value of subjectivity of setting severity parameter valueSmax, severity parameter value the effective minimum value of subjectivitySmin；For basis
3 present intensity value of view screenLcurDetermine severity parameter valueEcur；For basisSmaxWithSminTo severity parameter valueEcur
Carry out validity check and renewal intensity parameter valueEcur。
On the basis of existing video image enhancement processing system, no matter player end is increased using CPU realization video image
By force, or using GPU video image enhancement is realized, the present invention is additionally arranged two modules: screen intensity obtains module 4 and control
Module 5.
The present invention also provides a kind of player ends, including the video image enhancement processing system.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than limitation, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, within these are all belonged to the scope of protection of the present invention.
Claims (5)
1. a kind of video image enhancement processing method, comprising the following steps:
Step A. decodes the video data encoder to be played from received server-side, obtains original played data；
Step B. carries out video image enhancement to original played data and rendering is handled, and obtains terminal plays data；Wherein video
Image enhancement and rendering treatment process include according to severity parameter valueEcurImage enhancement processing is carried out to original played data；
The wherein severity parameter valueEcurRefer to the set of one group of parameter, including contrast intensity adjustment parameter, brightness regulation
One of parameter, saturation degree adjustment parameter, sharpening intensities parameter, details enhancing intensive parameter are a variety of；
Step C. view screen (3) display terminal played data；
It is characterized in that, between step A and step B further include:
The theoretical maximum of step D. setting severity parameter valueEmax, severity parameter value theoretical minimum valueEmin；Intensity is set
The effective maximum value of subjectivity of parameter valueSmax, severity parameter value the effective minimum value of subjectivitySmin；Emin≤Smin<Smax≤Emax；Obtain the screen intensity theoretical maximum of view screen (3)Lmax, view screen (3) screen intensity theoretical minimum valueLmin；
Step E. obtains view screen (3) present intensity value in real timeLcur；
Step F. is according to view screen (3) present intensity valueLcurDetermine severity parameter valueEcur；Intensity ginseng is determined according to the following formula
Numerical valueEcur:
, whereinbFor empirical coefficient；
Step G. according toSmaxWithSminTo severity parameter valueEcurCarry out validity check and renewal intensity parameter valueEcur,
In:
。
2. video image enhancement processing method as described in claim 1, which is characterized in that in the step B, by intensive parameter
ValueEcurAfter passing to the algorithm for image enhancement program in CPU, image enhancement processing is realized using CPU.
3. video image enhancement processing method as described in claim 1, which is characterized in that in the step B, by intensive parameter
ValueEcurAfter passing to the algorithm for image enhancement module in GPU, image enhancement processing is realized using GPU.
4. a kind of video image enhancement processing system, including Video decoding module (1), image enhancement and rendering module (2), broadcasting
Screen (3), in which:
Video decoding module (1): for decoding the video data encoder to be played from received server-side, original broadcasting number is obtained
According to；
Image enhancement and rendering module (2): for carrying out video image enhancement and rendering processing to original played data, end is obtained
Hold played data；Wherein video image enhancement and rendering treatment process include according to severity parameter valueEcurTo original played data
Carry out image enhancement processing；
View screen (3): it is used for display terminal played data；
It is characterized by further comprising:
Screen intensity obtains module (4): for obtaining view screen (3) present intensity value in real timeLcur；
Control module (5): for the theoretical maximum of severity parameter value to be arrangedEmax, severity parameter value theoretical minimum valueEmin；For the effective maximum value of subjectivity of severity parameter value to be arrangedSmax, severity parameter value the effective minimum value of subjectivitySmin；With
In the screen intensity theoretical maximum for obtaining view screen (3)Lmax, view screen (3) screen intensity theoretical minimum valueLmin；For according to view screen (3) present intensity valueLcurDetermine severity parameter valueEcur；For basisSmaxWithSminIt is right
Severity parameter valueEcurCarry out validity check and renewal intensity parameter valueEcur；
Wherein,
,bFor empirical coefficient；
。
5. a kind of player end, which is characterized in that including video image enhancement processing system as claimed in claim 4.
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Cited By (1)
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Application publication date: 20190426 |