CN106603885B - Method of video image processing and device - Google Patents
Method of video image processing and device Download PDFInfo
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Abstract
The present invention relates to a kind of method of video image processing, it include: the coding/decoding information for obtaining video, judge whether the decoding resolution of the video is less than target resolution, if it is, obtaining corresponding intermediate amplification factor and amplification mode according to the coding/decoding information of the video；The video image is amplified to obtain intermediate magnifying video image according to the intermediate amplification factor and amplification mode；The intermediate magnifying video image is amplified to target resolution, suitable intermediate amplification factor and amplification mode are wherein dynamically chosen for different video images according to the coding/decoding information of video, after obtaining the preferably intermediate magnifying video image of quality, it is amplified to target resolution again, improves the quality of amplified video image.In addition, additionally providing a kind of video image processing device.
Description
Technical field
The present invention relates to field of computer technology, more particularly to a kind of method of video image processing and device.
Background technique
With the development of digital media technology and computer technology, Video Applications are in every field, such as mobile communication, network
Monitoring, Web TV etc..In video display, the resolution ratio for display equipment often occur is greater than the video resolution received
Situation generally requires to show again after amplifying video image.
Existing video image often uses single amplification method, in different magnifying powers and different video in amplification
When being amplified using single amplification method often there is biggish difference in the quality of video, it may appear that amplification rear video quality
There is sawtooth effect when video image such as being carried out the amplification of big ratio in poor phenomenon.
Summary of the invention
Based on this, it is necessary in view of the above technical problems, a kind of method of video image processing and device are provided, dynamic
Video amplification method is adjusted, the quality of video is improved.
A kind of method of video image processing, which comprises
The coding/decoding information for obtaining video, judges whether the decoding resolution of the video is less than target resolution, if
It is that corresponding intermediate amplification factor and amplification mode are then obtained according to the coding/decoding information of the video；
The video image is amplified to obtain intermediate magnifying video image according to the intermediate amplification factor and amplification mode；
The intermediate magnifying video image is amplified to target resolution.
A kind of video image processing device, described device include:
Amplify pre-processing module, for obtaining the coding/decoding information of video, judge the video decoding resolution whether
Less than target resolution, if it is, obtaining corresponding intermediate amplification factor and amplification according to the coding/decoding information of the video
Mode；
First amplification module, for amplifying to obtain by the video image according to the intermediate amplification factor and amplification mode
Intermediate magnifying video image；
Second amplification module, for the intermediate magnifying video image to be amplified to target resolution.
Above-mentioned method of video image processing and device judge the decoding point of video by obtaining the coding/decoding information of video
Whether resolution is less than target resolution, if it is, according to the coding/decoding information of video obtain corresponding intermediate amplification factor and
Amplification mode amplifies video image to obtain intermediate magnifying video image according to intermediate amplification factor and amplification mode, will be intermediate
Magnifying video image is amplified to target resolution, wherein dynamic for different video images according to the coding/decoding information of video
Suitable intermediate amplification factor and amplification mode are chosen, after obtaining the preferably intermediate magnifying video image of quality, then is amplified to mesh
Resolution ratio is marked, the quality of amplified video image is improved.
Detailed description of the invention
Fig. 1 is the applied environment figure of method of video image processing in one embodiment；
Fig. 2 is the internal structure chart of terminal in Fig. 1 in one embodiment；
Fig. 3 is the flow chart of method of video image processing in one embodiment；
Fig. 4 is the flow chart that intermediate amplification factor is calculated in one embodiment；
Fig. 5 is to obtain the flow chart of video amplifier mode according to scene motion degree in one embodiment；
Fig. 6 is to obtain the flow chart of video amplifier mode according to level of resolution in one embodiment；
Fig. 7 is to obtain the flow chart of video amplifier mode according to quantification gradation in one embodiment；
Fig. 8 is to obtain the flow chart of video amplifier mode according to sport rank in one embodiment；
Fig. 9 is to obtain the flow chart of video amplifier mode according to correspondence table in one embodiment；
Figure 10 is the structural block diagram of video image processing device in one embodiment；
Figure 11 is the structural block diagram for amplifying pre-processing module in one embodiment；
Figure 12 is the structural block diagram for amplifying pre-processing module in another embodiment；
Figure 13 is the structural block diagram for amplifying pre-processing module in further embodiment；
Figure 14 is the structural block diagram for amplifying pre-processing module in another embodiment；
Figure 15 is the structural block diagram for amplifying pre-processing module in further embodiment；
Figure 16 is the structural block diagram of video image processing device in another embodiment.
Specific embodiment
Fig. 1 is the applied environment figure of method of video image processing operation in one embodiment.As shown in Figure 1, this applies ring
Border includes terminal 110, server 120 and terminal 130, and terminal 110, terminal 130 and server 120 are communicated by network.
Terminal 110 and terminal 130 can be smart phone, tablet computer, laptop, desktop computer etc., but not
It is confined to this.One camera is at least installed in terminal 110 and terminal 130, video image can be acquired by camera, and will
The video of acquisition is sent to another terminal, can also mutually carry out video calling.Server 120 can carry out turning for video
Hair.
In one embodiment, the internal structure of the terminal 110 in Fig. 1 is as shown in Fig. 2, the terminal 110 includes passing through to be
The processor of bus of uniting connection, storage medium, memory, network interface, shows screen, input equipment and determines graphics processing unit
Position system.Wherein, the storage medium of terminal 110 is stored with operating system, further includes a kind of video image processing device, the device
For realizing a kind of method of video image processing suitable for terminal.The processor is for providing calculating and control ability, support
The operation of entire terminal 110.Graphics processing unit in terminal 110 is at least providing the drawing ability of display interface, memory
Environment is provided for the operation of the video image processing device in storage medium, network interface is used to carry out network with server 120
Communication such as sends video to server 120, receives the video data etc. that server 120 returns.Display screen is for showing video
Broadcast interface etc., input equipment receive the order or data etc. of user's input for acquiring video image.For with touch screen
Terminal 110, shows screen and input equipment can be touch screen.
As shown in figure 3, in one embodiment, a kind of method of video image processing is provided, to be applied to above-mentioned application
Terminal in environment is come for example, including the following steps:
Step S210 obtains the coding/decoding information of video, judges whether the decoding resolution of video is less than target resolution,
If it is, obtaining corresponding intermediate amplification factor and amplification mode according to the coding/decoding information of video.
Specifically, the coding/decoding information of video refers to the video compress parameter information that video is obtained in coding or decoding,
Such as motion vector, quantization parameter, source video sequence, code rate, frame per second, resolution ratio.The coding/decoding information of video reflects video figure
The movement size of picture, network bandwidth etc..Moving scene such as can determine whether by motion vector and quantization parameter, quantization parameter greatly then one
As motion intense, then representative image scene is big moving scene to motion vector greatly.Source video sequence is related to the quality of video, such as a
The video that people uploads is usually that it is big not pass through processing video noise by oneself real scene shooting.Code rate is associated with bandwidth, general code rate
High then illustrate bandwidth abundance, and the size of code rate is related to the quality of video, and the higher picture quality of general code rate is better.Frame
Rate is the quantity of picture frame per second, generally takes higher frame per second in bandwidth abundance.
The video essential information judged according to the coding/decoding information of video, video scene and picture quality, for difference
The case where take different amplification strategies.According to the difference of interpolator arithmetic, there are many different amplification modes, each amplification modes
There are corresponding Pros and Cons, chooses the intermediate amplification being suitble to for different video images according to the coding/decoding information of video
Multiple and amplification mode, dynamically adjust video amplification method, the quality of video can be improved.If current video noise is very big,
Then be not suitable for selecting protecting edge video amplifier mode, be suitble to select the video amplifier mode with fuzziness, so that noise is not
Obviously；If current video noise is small, or is in small movement or stationary state, the video not no blocking artifact of coding and decoding substantially,
Then it is suitble to select the video amplifier mode for protecting edge, and can be sharpened after amplification, it is amplified increases video image
Clarity.Video is first amplified to intermediate magnifying video image by intermediate amplification factor, given resolution is such as amplified to or puts
Big specified multiple is conducive to save resource without directly amplifying target resolution, because intermediate enlarged drawing caching is relatively final
Target resolution is smaller, is also conducive to reduce complexity, specific intermediate amplification factor can be moved according to coding and decoding video information
State adjustment.Such as when the resolution ratio of the video image received is less than preset threshold, using the first amplification factor, otherwise using the
Two amplification factors, wherein the first amplification factor is greater than the second amplification factor.Or different resolution ratio is divided into different grades, etc.
The division mode of grade and the number of grade can be customized as needed.Corresponding intermediate amplification is determined according to the affiliated grade of resolution ratio
Multiple and video amplifier mode.As shown, the resolution ratio of the video image received is 192x144, first putting according to selection
Big mode amplifies 2 to 4 times, further according to the included amplification mode of OpenGL (Open Graphics Library, open graphic library)
It is amplified to 1920x1080.As shown, the resolution ratio of the video image received is 192x144, first according to the amplification side of selection
Formula is amplified to given resolution, is amplified to 1920x1080 further according to the OpenGL amplification mode carried.
Step S220 amplifies video image to obtain intermediate amplified video figure according to intermediate amplification factor and amplification mode
Picture.
Specifically, directly being carried using system if the video image received is directly amplified to target resolution
Amplification mode, such as linear interpolation or nearly field interpolation that OpenGL is carried, the video image that receives limited in network bandwidth
Resolution ratio differed with target resolution in biggish situation, the video image of display will appear fuzzy and a large amount of after amplification
The case where sawtooth.And video image is amplified to obtain intermediate amplified video figure according to intermediate amplification factor and amplification mode by elder generation
Picture obtains one wherein intermediate amplification factor and amplification mode are obtained according to coding and decoding video information dynamic adjustment after amplification
The preferably intermediate magnifying video image of a quality, then intermediate magnifying video image is amplified to target resolution, then the mesh obtained
The video image quality for marking resolution ratio is also preferable.
Intermediate magnifying video image is amplified to target resolution by step S230.
Specifically, intermediate magnifying video image is amplified to target resolution, the amplification mode used can be included for system
Amplification mode or customized amplification mode, can be fixed amplification mode, can also dynamically adjust from centre amplification view
Frequency image is amplified to the amplification mode used when target resolution.
In the present embodiment, by obtaining the coding/decoding information of video, judge whether the decoding resolution of video is less than target
Resolution ratio, if it is, corresponding intermediate amplification factor and amplification mode are obtained according to the coding/decoding information of video, according to centre
Amplification factor and amplification mode amplify video image to obtain intermediate magnifying video image, and intermediate magnifying video image is amplified to
Target resolution, wherein dynamically choosing the intermediate amplification being suitble to for different video images according to the coding/decoding information of video
Multiple and amplification mode after obtaining the preferably intermediate magnifying video image of quality, then are amplified to target resolution, improve amplification
The quality of video image afterwards.
In one embodiment, as shown in figure 4, step S210 includes:
The gap between target resolution and decoding resolution is calculated in step S211.
Specifically, gap between target resolution and decoding resolution can be according to by target resolution and decoding resolution
Subtract each other or is divided by obtain.Also can customize algorithm obtain two all between gap.
Step S212 obtains corresponding intermediate amplification factor, the size of intermediate amplification factor and the gap according to gap
Size it is directly proportional.
Specifically, the two gap is bigger, then intermediate amplification factor is bigger, and the two gap is smaller, then intermediate amplification factor is got over
It is small.When gap be less than preset threshold when, illustrate that decoding resolution is very close with target resolution, can choose at this time without
Centre amplification, and target resolution is directly amplified, image enhancement processing is used after amplification, improves the quality of video image.?
It is corresponding when the video image decoding of resolution ratio 192x144 is to screen resolution 1920x1080 in one specific embodiment
Intermediate amplification factor is 4 times, when the video image decoding of resolution ratio 320x240 is to screen resolution 1920x1080, it is corresponding in
Between amplification factor be 2 times, when the video image decoding of resolution ratio 480x360 is to screen resolution 1920x1080, corresponding centre
Amplification factor is 2 times, and the video image decoding of 640x480 and the above resolution ratio is corresponding to put to screen resolution 1920x1080
Big multiplying power is 1 times (do not do and amplify), and only enhancing is handled.
In one embodiment, as shown in figure 5, step S210 includes:
Step S213 judges the scene motion degree of video according to the coding/decoding information of video.
Specifically, the coding/decoding information of video such as quantization parameter and motion vector can help to judge the scene fortune of video
Dynamic degree, the big video frame of quantization parameter generally move larger, and the big video frame of motion vector generally moves larger.It can customize and sentence
The algorithm of the scene motion degree of disconnected video, such as defines the corresponding relationship of quantization parameter and scene motion degree, is obtained according to quantization parameter
Scene motion degree is obtained to corresponding scene motion degree, or according to quantization parameter and motion vector COMPREHENSIVE CALCULATING.
Step S214 obtains corresponding video amplifier mode, the edge enhancing of video amplifier mode according to scene motion degree
It spends and is inversely proportional with the size of scene motion degree.
Specifically, according to the more moving the more smooth, more static more clearly principle, the big video image selection of scene motion degree
The small video amplifier mode of edge enhancing degree, for big moving scene due to object of which movement, human eye is not high to the resolution at edge, can be with
The video amplifier mode with fuzziness is taken, so that movement is more smooth.The small video image selection edge enhancing of scene motion degree
Big video amplifier mode is spent, such as small movement or static scene can take the video amplifier mode for protecting marginal belt enhancing edge,
So that image is apparent.
In one embodiment, step S210 includes: the code rate for obtaining video, if code rate is lower than default code rate, is adopted
Take the basic video amplifier mode for protecting edge.
Specifically, often video image quality is generally lower, in order to enable video image is put when code rate is lower than default code rate
It can guarantee certain clarity after big, the basic video amplifier mode for protecting edge can be taken.It can also be specific according to the size of code rate
Different video amplifier modes is distributed, the strategy of distribution is the size of code rate and the edge enhancing degree of video amplifier mode at anti-
Than.The realization algorithm for wherein protecting the video amplifier mode at edge substantially is unlimited, as long as can achieve the effect that protect edge substantially,
Such as the video amplifier mode of antialiasing.
In one embodiment, step S210 includes: the noise for detecting video image, if noise is more than preset value,
Take the video amplifier mode with fuzziness.
Specifically, fuzzy filter can reduce the noise of video image, fuzzy filter is dissolved into amplifying technique, as
One parameter of amplifying technique, which is supplied to external interface, can be realized the video amplifier mode with fuzziness.Fuzzy filter it is specific
Algorithm can customize, for example interpolator arithmetic of the blur technology of fuzzy emergence plus bi-cubic interpolation.
In one embodiment, video decoding resolution is divided into different level of resolution, and video decoding resolution is higher
Corresponding level of resolution is higher, as shown in fig. 6, step S210 includes:
Step S215a obtains video decoding resolution currently corresponding level of resolution.
Specifically, the division of level of resolution can be customized as needed, if 192x144 is the first estate, 320x240 is
Second grade, 480x360 are the tertiary gradient, and 640x480 is the fourth estate.
Step S215b, if level of resolution be the first estate, amplification factor be the first default amplification factor, first
The corresponding basic video amplifier mode for protecting edge of grade.
Step S215c, if level of resolution is the second grade, amplification factor is the second default amplification factor, wherein
Second default amplification factor is less than or equal to the first default amplification factor, obtains the scene type of video, the big movement of the second grade
Scene corresponds to the video amplifier mode with fuzziness, the small moving scene of the second grade and the corresponding basic view for protecting edge of static scene
Frequency amplification mode.
Step S215d, if level of resolution is the tertiary gradient, amplification factor is that third presets amplification factor, described
Third presets amplification factor and is less than or equal to the described second default amplification factor, and the corresponding marginal belt of protecting of the tertiary gradient enhances side
The video amplifier mode of edge.
Step S215e, if level of resolution is the fourth estate or the fourth estate or more, amplification factor 1.
Specifically, the first default amplification factor, the second default amplification factor, third, which preset amplification factor, presets amplification factor
Can be customized as needed, as long as the relationship size between meeting, in one embodiment the first default times magnification
Number is 2 to 4 times, and the second default amplification factor is 2 times, and it is 2 times that third, which presets amplification factor,.It is put in junior video image
Pre-treatment, such as deblocking effect can be also carried out before big.In junior video image there are when larger noise, can carry out low
Intensity it is fuzzy after amplify again.Second grade takes different video amplifier modes according to the scene type of video, into one
Step improves the flexibility of video amplifier.The corresponding video amplifier mode for protecting marginal belt enhancing edge of the tertiary gradient, increases edge
It is dissolved into amplifying technique by force, a parameter as amplifying technique, which is supplied to external interface, can be realized guarantor's marginal belt enhancing side
The video amplifier mode of edge.If level of resolution is the fourth estate or the fourth estate or more, amplification factor 1, without
Centre amplification, image enhancement processing can be carried out after being amplified to target resolution, improves the quality of video image.
In one embodiment, Video coding quantization parameter is divided into different quantification gradations, Video coding quantization parameter value
More big corresponding quantification gradation is higher, as shown in fig. 7, step S210 includes:
Step S216a obtains the corresponding quantification gradation of current video frame of video.
Specifically, if can customize when each video image blocks of one frame video of composition have different quantization parameters
Algorithm calculates the quantization parameter of a frame video image, and the quantization parameter of each video image blocks is averagely such as obtained frame amount
Parameter.After obtaining frame quantization parameter, according to the relationship of quantization parameter and quantification gradation, corresponding quantization of quantization parameter etc. is obtained
Grade.The division of quantification gradation can as needed it is customized, as QP≤25 be the first estate, 25 < QP≤30 be the second grade, 30
< QP≤35 are the tertiary gradient, and 40 < QP is the fourth estate, and wherein QP is quantization parameter.
Step S216b takes the basic video amplifier mode for protecting edge if quantification gradation is the first estate.
Step S216c takes the video amplifier side for protecting marginal belt enhancing edge if quantification gradation is the second grade
Formula.
Step S216d, if quantification gradation is the tertiary gradient or the tertiary gradient or more, amplification factor 1.Specifically,
The low quantification gradation of grade, quantization parameter is small, at this time network bandwidth generally relatively foot, and image is taken and basic protects side than more visible
The video amplifier mode of edge.In one embodiment, if quantification gradation is the first estate, judge point of video image
Resolution is taken the basic video amplifier mode for protecting edge if the resolution ratio of video image is lower than preset threshold, is otherwise taken
The video amplifier mode of system default.The corresponding intermediate video amplification factor of each grade, can be according to the resolution ratio of video image
It is corresponding to determine.More than the tertiary gradient or the tertiary gradient, amplifies without centre, can be carried out after being amplified to target resolution
Image enhancement processing improves the quality of video image.
In one embodiment, the scene of video is divided into different sport ranks, the video motion the violent corresponding etc.
Grade is higher, as shown in figure 8, step S210 includes:
Step S217a judges the corresponding sport rank of scene of video according to coding/decoding information.
Specifically, can be according to quantization parameter and/or the scene motion value of motion vector calculation video frame, according to scene motion
The size of value obtains corresponding sport rank.The division of sport rank can as needed it is customized, as the first estate be desktop or
The degrees of motion that document is shared, the second grade are the degrees of motion of static personage's scene, and the tertiary gradient is the degrees of motion of small moving scene,
The fourth estate is the degrees of motion of general moving scene, and the 5th grade is the degrees of motion of big moving scene, and the 6th grade is acutely to transport
The dynamic corresponding degrees of motion of scene.
Step S217b, if sport rank is the first estate, amplification factor 1, the first estate includes desktop or document
Share scene.
Specifically, the first estate amplifies without centre, the amplification mode of system default is taken, because of video solution at this time
Code distinguishability is generally very high and does not move, and image is inherently apparent.
Step S217c takes the basic video amplifier mode for protecting edge if sport rank is the second grade.
Step S217d takes the video amplifier side for protecting marginal belt enhancing edge if sport rank is the tertiary gradient
Formula.
Step S217e takes the video amplifier mode with low-intensity noise reduction if sport rank is the fourth estate.
Step S217f takes the video amplifier side that intensity noise reduction is fuzzy in band if sport rank is the 5th grade
Formula.
Step S217g takes the video amplifier side obscured with high-strength noise reduction if sport rank is the 6th grade
Formula.
Specifically, the corresponding intermediate amplification factor of each grade can be determined according to coding/decoding information, such as according to decoding resolution
Rate determines.The degrees of motion very little of second grade, is substantially at stationary state, and such as landscape figure or background video image, image is general
Than more visible, the basic video amplifier mode for protecting edge is taken.The degrees of motion of the tertiary gradient is than the second bigger grade, general to go back
It is to belong to small movement, the identification at edge is also relatively high at this time, the video amplifier mode for protecting marginal belt enhancing edge is taken, so that
Edge enhancing.Since the fourth estate, the intensity of movement is increasing, and when moving larger, general quantization parameter is big, image decoding
Generally there are noise clarity is not high afterwards.In order to guarantee the fluency of movement, with the increase of sport rank, the intensity of noise reduction
Increase.
In one embodiment, the coding/decoding information of video includes frame per second, code rate, decoding resolution, quantization parameter, described
Method further include: obtain the currently playing network quality of video and/or play the processing capacity of the terminal of video, step S210 packet
Include: judging the scene of video according to coding/decoding information, according to decoding resolution, frame per second, code rate, quantization parameter, video scene,
Play network quality, play video terminal processing capacity in the corresponding intermediate amplification factor of at least 2 acquisition of information and
Amplification mode.
Specifically, currently playing network quality includes bandwidth, network fluctuation size etc..The processing capacity of terminal can be according to end
The nucleus number at end, dominant frequency information confirm, terminal can be divided into different grades according to the processing capacity of terminal, such as low side, middle-end
With it is high-end, the division of grade can customize, double-core or four cores as, dominant frequency be greater than 1.5GHz be middle-end type, the place of terminal
Reason ability is stronger, can take amplification mode and enhancement method that algorithm complexity is higher, improve the quality of video image.It is obtaining
When corresponding intermediate amplification factor and amplification mode, a variety of conditions are comprehensively considered, such as in low bit- rate, low resolution, high frame per second
In the case of, the basic video amplifier mode for protecting edge is taken after the decoding.Larger, the low resolution in video scene noise, generally
In the case where frame per second, the video amplifier mode with fuzziness is taken, such as bi-cubic interpolation method interpolator arithmetic.It is small movement or it is static
Scene, general resolution ratio in the case where low frame per second, take the video amplifier mode for protecting marginal belt enhancing edge.In big sports ground
Scape, the mode of low resolution, higher frame per second are taken with fuzziness after the decoding and do not do the video amplifier mode sharpened.?
Current network bandwidth is very low (< 80kbps), middle-end type (double-core or four cores, dominant frequency be greater than 1.5GHz), Video chat light compared with
Secretly, when noise is larger, the basic video amplifier mode for protecting edge is taken.Comprehensively considered image self-information, bandwidth information and
The video amplifier mode and amplification factor of terminal processing capacity more tally with the actual situation, flexibly dynamic higher.
In one embodiment, after step S210 further include: current according to the coding/decoding information of video and/or video
The processing capacity for playing network quality and/or playing the terminal of video obtains corresponding enhancement method, according to enhancement method centering
Between magnifying video image carry out video image enhancement.
Specifically, according to the coding/decoding information of video and/or the currently playing network quality of video and/or the end of broadcasting video
The processing capacity at end can obtain different enhancement methods according to the actual situation, as noise reduction enhancing can be carried out when video noise is larger,
The enhancing of Video Edge resolution Gao Shike degree of comparing can carry out clear when image resolution ratio is high to image definition requirements greatly
Clearization enhancing etc..Can also be according to the processing capacity for the terminal for playing video, the processing capacity of terminal is stronger, and algorithm can be taken complicated
Spend higher enhancement method.Video amplifier mode and enhancement method can be also combined, establish video amplifier mode and enhancing
Syntagmatic between mode can quickly obtain enhancement method according to video amplifier mode.
In one embodiment, as shown in figure 9, step S210 includes:
Step S218a obtains preset condition and intermediate amplification factor and the correspondence table for amplifying mode, described default
Condition includes decoding resolution, frame per second, code rate, quantization parameter, the scene of video, broadcasting network quality, the terminal for playing video
Processing capacity at least one of information.
Specifically, establishing preset condition and intermediate amplification factor and the corresponding relationship for amplifying mode according to Exemplary statistical data
Table.It as shown in table 1, is a correspondence table.Corresponding intermediate amplification in the case where 5 kinds of differences is illustrated in table
Multiple and amplification mode.Since different preset condition situations according to the actual situation may be very much, so table shows only portion
The selection of intermediate amplification factor and amplification mode in the case of point.Columns in table can add deduct according to how much increasings of preset condition
It is few.Intermediate amplification factor and amplification mode in table and the corresponding relationship of preset condition can be customized as needed.
Table 1
Step S218b, according to the coding/decoding information of video, video currently playing network quality, the terminal for playing video
At least one of processing capacity information and preset condition compare, and search to obtain corresponding intermediate times magnification in correspondence table
Number and amplification mode.
Specifically, passing through the coding/decoding information of video, the processing of the currently playing network quality of video, the terminal of broadcasting video
At least one of ability information and preset condition compare, and such as bandwidth < 80kbps, then the video amplifier side at edge is protected in selection substantially
Formula, intermediate amplification factor are 2 to 4 times.A kind of information or much information can be compared when comparison, finally quickly searched in the table
To corresponding intermediate amplification factor and amplification mode.By way of pre-stored table, it may make every time in the volume for obtaining video
After the currently playing network quality of decoded information, video, the processing capacity for the terminal for playing video, do not need to carry out other operations
Corresponding intermediate amplification factor and amplification mode can be obtained by zoom table fastly, improve processing speed.In one embodiment, right
Answer further include in related table preset condition and enhancement method corresponding relationship.As shown in table 2.It is classified as according to difference at last
Preset condition determine enhancement method.
Table 2
In one embodiment, as shown in Figure 10, a kind of video image processing device is provided, comprising:
Amplify pre-processing module 310 and judges whether the decoding resolution of video is small for obtaining the coding/decoding information of video
In target resolution, if it is, obtaining corresponding intermediate amplification factor and amplification mode according to the coding/decoding information of video.
First amplification module 320, for amplifying video image to obtain centre according to intermediate amplification factor and amplification mode
Magnifying video image.
Second amplification module 330, for intermediate magnifying video image to be amplified to target resolution.
In one embodiment, as shown in figure 11, amplification pre-processing module 310 includes:
Gap computing unit 311, the gap for being calculated between target resolution and decoding resolution.
Intermediate amplification factor determination unit 312, for obtaining corresponding intermediate amplification factor, intermediate times magnification according to gap
Several sizes is directly proportional to the size of gap.
In one embodiment, as shown in figure 12, amplification pre-processing module 310 includes:
Scene judging unit 313 judges the scene motion degree of video for the coding/decoding information according to video.
Amplification mode determination unit 314, for obtaining corresponding video amplifier mode, video amplifier according to scene motion degree
The edge enhancing degree and the size of scene motion degree of mode are inversely proportional.
In one embodiment, amplification pre-processing module 310 is also used to obtain the code rate of video, if the code rate is lower than
Default code rate then takes the basic video amplifier mode for protecting edge.
In one embodiment, amplification pre-processing module 310 is also used to detect the noise of video image, if noise is more than
Preset value then takes the video amplifier mode with paste mould degree.
In one embodiment, video decoding resolution is divided into different level of resolution, and video decoding resolution is higher
Corresponding level of resolution is higher, and as shown in figure 13, amplification pre-processing module 310 includes:
Level of resolution determination unit 315, for obtaining video decoding resolution currently corresponding level of resolution.
Level of resolution amplifying unit 316, if being the first estate for level of resolution, amplification factor is first pre-
If amplification factor, the corresponding basic video amplifier mode for protecting edge of the first estate is put if level of resolution is the second grade
Big multiple is the second default amplification factor, wherein the second default amplification factor is less than or equal to the first default amplification factor, is obtained
The scene type of video, the corresponding video amplifier mode with fuzziness of the big moving scene of the second grade, the small sports ground of the second grade
Scape and the corresponding basic video amplifier mode for protecting edge of static scene, if level of resolution is the tertiary gradient, amplification factor
Amplification factor is preset for third, third presets amplification factor and is less than or equal to the described second default amplification factor, the tertiary gradient pair
The video amplifier mode that marginal belt enhancing edge should be protected is put if level of resolution is the fourth estate or the fourth estate or more
Big multiple is 1.
In one embodiment, Video coding quantization parameter is divided into different quantification gradations, Video coding quantization parameter value
More big corresponding quantification gradation is higher, and as shown in figure 14, amplification pre-processing module 310 includes:
Quantification gradation determination unit 317, the corresponding quantification gradation of current video frame for obtaining video.
Quantification gradation amplifying unit 318 takes the basic video for protecting edge if being the first estate for quantification gradation
Amplification mode takes the video amplifier mode for protecting marginal belt enhancing edge if quantification gradation is the second grade, if quantization
Grade is the tertiary gradient or the tertiary gradient or more, then amplification factor is 1.
In one embodiment, the scene of video is divided into different sport ranks, the video motion the violent corresponding etc.
Grade is higher, and as shown in figure 15, amplification pre-processing module 310 includes:
Sport rank determination unit 319a, corresponding movement of scene for judging the video according to coding/decoding information etc.
Grade
Sport rank amplifying unit 319b, if being the first estate for sport rank, amplification factor 1, described the
One grade includes that desktop or document share scene, if sport rank is the second grade, the basic video for protecting edge is taken to put
Big mode takes the video amplifier mode for protecting marginal belt enhancing edge if sport rank is the tertiary gradient, if movement etc.
Grade is the fourth estate, then takes the video amplifier mode with low-intensity noise reduction, if sport rank is the 5th grade, takes band
The fuzzy video amplifier mode of middle intensity noise reduction takes band high-strength noise reduction mould if the sport rank is the 6th grade
The video amplifier mode of paste.
In one embodiment, the coding/decoding information of video includes frame per second, code rate, decoding resolution, quantization parameter, amplification
Pre-processing module 310 is also used to obtain the currently playing network quality of video and/or plays the processing capacity of the terminal of video, according to
Coding/decoding information judges the scene of video, according to decoding resolution, frame per second, code rate, quantization parameter, the scene of video, broadcasting net
Network quality, the corresponding intermediate amplification factor of at least 2 acquisition of information in the processing capacity for the terminal for playing video and amplification side
Formula.
In one embodiment, as shown in figure 16, described device further include:
Enhance module 340, for according to the currently playing network quality of coding/decoding information and/or video of video and/or broadcasting
The processing capacity for putting the terminal of video obtains corresponding enhancement method, is regarded according to enhancement method to intermediate magnifying video image
Frequency image enhancement.
In one embodiment, amplification pre-processing module is also used to obtain preset condition and intermediate amplification factor and amplification side
The correspondence table of formula, preset condition include decoding resolution, frame per second, code rate, quantization parameter, the scene of video, broadcasting net
At least one information in network quality, the processing capacity for the terminal for playing video, it is current according to the coding/decoding information of video, video
It plays at least one of network quality, the processing capacity of terminal for playing video information and preset condition compares, closed corresponding
It is that table lookup obtains corresponding intermediate amplification factor and amplification mode.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, described program can be stored in a computer-readable storage medium
In, in the embodiment of the present invention, which be can be stored in the storage medium of computer system, and by the computer system
At least one processor executes, and includes the process such as the embodiment of above-mentioned each method with realization.Wherein, the storage medium can be
Magnetic disk, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (22)
1. a kind of method of video image processing, which comprises
The coding/decoding information for obtaining video, judges whether the decoding resolution of the video is less than target resolution, if it is,
Corresponding intermediate amplification factor and amplification mode, the coding/decoding information of the video are obtained according to the coding/decoding information of the video
Including frame per second, code rate, decoding resolution, quantization parameter, according to the quantization parameter and/or motion vector in the coding/decoding information
The scene motion degree for judging the video, according to the decoding resolution, quantization parameter, video scene motion degree at least
Binomial information obtains corresponding intermediate amplification factor, according to the decoding resolution, frame per second, code rate, quantization parameter, video field
At least binomial information in scape degrees of motion obtains corresponding amplification mode；
The video image is amplified to obtain intermediate magnifying video image according to the intermediate amplification factor and amplification mode；
The intermediate magnifying video image is amplified to target resolution.
2. the method according to claim 1, wherein the coding/decoding information according to the video is corresponded to
Intermediate amplification factor and amplification mode the step of further include:
The gap between the target resolution and decoding resolution is calculated；
Corresponding intermediate amplification factor, the size of the intermediate amplification factor and the size of the gap are obtained according to the gap
It is directly proportional.
3. the method according to claim 1, wherein the coding/decoding information according to the video is corresponded to
Intermediate amplification factor and amplification mode the step of further include:
Corresponding video amplifier mode, the edge enhancing degree of the video amplifier mode and institute are obtained according to the scene motion degree
The size for stating scene motion degree is inversely proportional.
4. the method according to claim 1, wherein the coding/decoding information according to the video is corresponded to
Intermediate amplification factor and amplification mode the step of further include:
The code rate of video is obtained, if the code rate is lower than default code rate, takes the basic video amplifier mode for protecting edge.
5. the method according to claim 1, wherein the coding/decoding information of the video includes source video sequence, institute
State the step of corresponding intermediate amplification factor and amplification mode are obtained according to the coding/decoding information of the video further include:
The noise of video image is detected according to the source video sequence, if the noise is more than preset value, takes band fuzziness
Video amplifier mode.
6. the method according to claim 1, wherein video decoding resolution is divided into different level of resolution,
The more high corresponding level of resolution of video decoding resolution is higher, and the coding/decoding information according to the video obtains corresponding
The step of intermediate amplification factor and amplification mode further include:
Obtain the video decoding resolution currently corresponding level of resolution；
If the level of resolution is the first estate, amplification factor is the first default amplification factor, and the first estate corresponds to base
The video amplifier mode at this guarantor edge；
If the level of resolution is the second grade, amplification factor is the second default amplification factor, wherein second default puts
Big multiple is less than or equal to the first default amplification factor, obtains the scene type of the video, the big moving scene pair of the second grade
It should be with the video amplifier mode of fuzziness, the small moving scene of the second grade and the corresponding basic video amplifier for protecting edge of static scene
Mode；
If the level of resolution is the tertiary gradient, amplification factor is that third presets amplification factor, and the third is default to put
Big multiple is less than or equal to the described second default amplification factor, and the corresponding video for protecting marginal belt enhancing edge of the tertiary gradient is put
Big mode；
If the level of resolution is the fourth estate or the fourth estate or more, amplification factor 1.
7. the method according to claim 1, wherein Video coding quantization parameter is divided into different quantification gradations,
The more big corresponding quantification gradation of Video coding quantization parameter value is higher, and the coding/decoding information according to the video is corresponded to
Intermediate amplification factor and amplification mode the step of further include:
Obtain the corresponding quantification gradation of current video frame of the video；
If the quantification gradation is the first estate, the basic video amplifier mode for protecting edge is taken；
If the quantification gradation is the second grade, the video amplifier mode for protecting marginal belt enhancing edge is taken；
If the quantification gradation is the tertiary gradient or the tertiary gradient or more, amplification factor 1.
8. the method according to claim 1, wherein the scene of video to be divided into different sport ranks, video
Move more violent corresponding higher grade, the coding/decoding information according to the video obtain corresponding intermediate amplification factor and
The step of amplification mode further include:
According in the coding/decoding information quantization parameter and/or motion vector judge the video scene it is corresponding movement etc.
Grade；
If the sport rank is the first estate, amplification factor 1, described the first estate includes that desktop or document share field
Scape；
If the sport rank is the second grade, the basic video amplifier mode for protecting edge is taken；
If the sport rank is the tertiary gradient, the video amplifier mode for protecting marginal belt enhancing edge is taken；
If the sport rank is the fourth estate, the video amplifier mode with low-intensity noise reduction is taken；
If the sport rank is the 5th grade, the video amplifier mode that intensity noise reduction is fuzzy in band is taken；
If the sport rank is the 6th grade, the video amplifier mode obscured with high-strength noise reduction is taken.
9. the method according to claim 1, wherein the method also includes:
It obtains the currently playing network quality of video and/or plays the processing capacity of the terminal of video；
The step of coding/decoding information according to the video obtains corresponding intermediate amplification factor and amplifies mode includes: root
According to the decoding resolution, frame per second, code rate, quantization parameter, video scene motion degree at least binomial information and described broadcast
Put network quality, play video terminal processing capacity at least one of the corresponding amplification mode of acquisition of information.
10. method according to any one of claims 1 to 9, which is characterized in that it is described according to the intermediate amplification factor and
Amplification mode amplified the video image after the step of obtaining intermediate magnifying video image, further includes:
According to the place of the coding/decoding information of the video and/or the currently playing network quality of video and/or the terminal for playing video
Reason ability obtains corresponding enhancement method；
Video image enhancement is carried out to the intermediate magnifying video image according to the enhancement method.
11. method according to any one of claims 1 to 9, which is characterized in that described to be believed according to the encoding and decoding of the video
Breath obtains the step of corresponding intermediate amplification factor and amplification mode further include:
Preset condition and intermediate amplification factor and the correspondence table for amplifying mode are obtained, the preset condition includes decoding point
Resolution, quantization parameter, video scene motion degree at least binomial information, decoding resolution, frame per second, code rate, quantization parameter,
In at least binomial information, broadcasting network quality, the processing capacity for the terminal for playing video in the scene motion degree of video extremely
One item missing information；
According at least one of the currently playing network quality of video, the processing capacity of terminal for playing video information and the view
The coding/decoding information of frequency and the preset condition compare, and search to obtain corresponding intermediate amplification factor in the correspondence table
With amplification mode.
12. a kind of video image processing device, which is characterized in that described device includes:
Amplify pre-processing module and judges whether the decoding resolution of the video is less than for obtaining the coding/decoding information of video
Target resolution, if it is, corresponding intermediate amplification factor and amplification mode are obtained according to the coding/decoding information of the video,
The coding/decoding information of the video includes frame per second, code rate, decoding resolution, quantization parameter, according in the coding/decoding information
Quantization parameter and/or motion vector judge the scene motion degree of the video, according to the decoding resolution, quantization parameter, view
At least binomial information in the scene motion degree of frequency obtains corresponding intermediate amplification factor, according to the decoding resolution, frame per second,
Code rate, quantization parameter, video scene motion degree at least binomial information obtain corresponding amplification mode；
First amplification module, for amplifying the video image to obtain centre according to the intermediate amplification factor and amplification mode
Magnifying video image；
Second amplification module, for the intermediate magnifying video image to be amplified to target resolution.
13. device according to claim 12, which is characterized in that the amplification pre-processing module further include:
Gap computing unit, the gap for being calculated between the target resolution and decoding resolution；
Intermediate amplification factor determination unit, for obtaining corresponding intermediate amplification factor, the intermediate amplification according to the gap
The size of multiple is directly proportional to the size of the gap.
14. device according to claim 12, which is characterized in that the amplification pre-processing module further include:
Amplification mode determination unit, for obtaining corresponding video amplifier mode according to the scene motion degree, the video is put
The edge enhancing degree and the size of the scene motion degree of big mode are inversely proportional.
15. device according to claim 12, which is characterized in that the amplification pre-processing module is also used to obtain video
Code rate takes the basic video amplifier mode for protecting edge if the code rate is lower than default code rate.
16. device according to claim 12, which is characterized in that the coding/decoding information of the video includes source video sequence,
The amplification pre-processing module is also used to detect the noise of video image according to the source video sequence, if the noise is more than pre-
If value then takes the video amplifier mode with paste mould degree.
17. device according to claim 12, which is characterized in that video decoding resolution is divided into different resolution ratio etc.
Grade, the more high corresponding level of resolution of video decoding resolution is higher, the amplification pre-processing module further include:
Level of resolution determination unit, for obtaining the video decoding resolution currently corresponding level of resolution；
Level of resolution amplifying unit, if being the first estate for the level of resolution, amplification factor is first default
Amplification factor, the corresponding basic video amplifier mode for protecting edge of the first estate, if the level of resolution is the second grade,
Amplification factor is that the second default amplification factor obtains wherein the second default amplification factor is less than or equal to the first default amplification factor
The scene type of the video is taken, the big moving scene of the second grade corresponds to the video amplifier mode with fuzziness, and the second grade is small
Moving scene and the corresponding basic video amplifier mode for protecting edge of static scene, if the level of resolution is the tertiary gradient,
Then amplification factor is that third presets amplification factor, and the third presets amplification factor and is less than or equal to the described second default times magnification
Number, the corresponding video amplifier mode for protecting marginal belt enhancing edge of the tertiary gradient, if the level of resolution is 4th etc.
More than grade or the fourth estate, then amplification factor is 1.
18. device according to claim 12, which is characterized in that Video coding quantization parameter is divided into different quantizations etc.
Grade, the more big corresponding quantification gradation of Video coding quantization parameter value is higher, the amplification pre-processing module further include:
Quantification gradation determination unit, the corresponding quantification gradation of current video frame for obtaining the video；
Quantification gradation amplifying unit takes the basic video for protecting edge to put if being the first estate for the quantification gradation
Big mode takes the video amplifier mode for protecting marginal belt enhancing edge, if institute if the quantification gradation is the second grade
Stating quantification gradation is the tertiary gradient or the tertiary gradient or more, then amplification factor is 1.
19. device according to claim 12, which is characterized in that the scene of video is divided into different sport ranks, depending on
The more violent corresponding higher grade of frequency movement, the amplification pre-processing module further include:
Sport rank determination unit, for according in the coding/decoding information quantization parameter and/or motion vector judgement described in
The corresponding sport rank of the scene of video；
Sport rank amplifying unit, if for the sport rank be the first estate, amplification factor 1, described first etc.
Grade includes that desktop or document share scene, if the sport rank is the second grade, the basic video for protecting edge is taken to put
Big mode takes the video amplifier mode for protecting marginal belt enhancing edge, if institute if the sport rank is the tertiary gradient
Stating sport rank is the fourth estate, then takes the video amplifier mode with low-intensity noise reduction, if the sport rank is the 5th
Grade then takes the video amplifier mode that intensity noise reduction is fuzzy in band, if the sport rank is the 6th grade, takes band
The fuzzy video amplifier mode of high-strength noise reduction.
20. device according to claim 12, which is characterized in that the amplification pre-processing module is also used to obtain video and works as
The processing capacity of the preceding terminal for playing network quality and/or playing video, according to the decoding resolution, frame per second, code rate, quantization
Parameter, video scene motion degree at least binomial information and it is described play network quality, play video terminal processing
At least one corresponding amplification mode of acquisition of information in ability.
21. 2 to 20 described in any item devices according to claim 1, which is characterized in that described device further include:
Enhance module, for regarding according to the currently playing network quality of coding/decoding information and/or video and/or broadcasting of the video
The processing capacity of the terminal of frequency obtains corresponding enhancement method, according to the enhancement method to the intermediate magnifying video image into
Row video image enhancement.
22. 2 to 20 described in any item devices according to claim 1, which is characterized in that the amplification pre-processing module is also used to
Preset condition and intermediate amplification factor and the correspondence table for amplifying mode are obtained, the preset condition includes that decoding is differentiated
Rate, quantization parameter, video scene motion degree at least binomial information, decoding resolution, frame per second, code rate, quantization parameter, view
In at least binomial information, broadcasting network quality, the processing capacity for the terminal for playing video in the scene motion degree of frequency at least
One information, according to the currently playing network quality of video, play video at least one of the processing capacity of terminal information and
The coding/decoding information of the video and the preset condition compare, and search to obtain corresponding centre in the correspondence table and put
Big multiple and amplification mode.
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| CN110595603B (en) * | 2019-04-26 | 2022-04-19 | 深圳市豪视智能科技有限公司 | Video-based vibration analysis method and related product |
| CN110677554B (en) * | 2019-10-31 | 2021-09-24 | 深圳市奥拓电子股份有限公司 | Video amplification method and device, electronic equipment and storage medium |
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