CN103177001B - A kind of method and device realizing the switching of picture smoothness - Google Patents
A kind of method and device realizing the switching of picture smoothness Download PDFInfo
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Abstract
The invention discloses a kind of method and device realizing the switching of picture smoothness, for the picture Loading opportunity during existing picture browsing and load mode are improved, slow to solve loading velocity, switch slack technical problem.The present invention by carrying out the switching of speeding up picture file to the pre decoding of switching file destination, intelligence decoding process is used when performing the decoding task of pre decoding and current goal file, the file destination decoding time according to remaining time and estimation, decision-making carries out whole figure decoding or partial decoding of h to file destination.When farthest can realize picture browsing by the present invention, the smooth switching of picture, and take into account the display quality of picture, thus promote Consumer's Experience.
Description
Technical field
The present invention relates to picture Processing Technique field, particularly relate to a kind of side being capable of the switching of picture smoothness
Method and device.
Background technology
In Photo Browser, when to check a width picture, it is usually subjected to several steps as shown in Figure 1:
1) user interface (User Interface, UI) thread submits picture decoding task to background thread；
2) picture is decoded by background thread according to picture decoding task；
3) decode complete after send more new information to UI；
4) when UI processes more new information, according to the size of window, the picture of decoding gained is zoomed in and out with
Adapt to window size；
5) UI thread draws picture on screen.
When occur picture switching time, existing most of Viewing software for simplicity, the mode of employing is all
Just submit picture decoding task when switching occurs to, and be to do the decoding of whole figure.Just load when switching occurs
Picture, can cause experiencing the most smooth, additionally in the case of switching faster, although the picture matter of whole figure decoding
Measure higher, but do not catch up with the speed of switching, when display is drawn, be still only able to display fuzzy thumbnail
To user, cause bad experience.
Summary of the invention
In view of this, a kind of method realizing the switching of picture smoothness of offer and dress are provided
Put, for the picture Loading opportunity during existing picture browsing and load mode are improved, to solve
Loading velocity is slow, switches slack technical problem.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
A kind of method realizing the switching of picture smoothness, the method includes:
Before handover the file destination of switching next time is carried out pre decoding；
After triggering switching, it may be judged whether the file destination of current switching was carried out pre decoding, if entering
Went pre decoding, then directly display the file destination after pre decoding, and submit the file destination next time switched to
Intelligent decoding task；If not carrying out pre decoding, then submit the intelligence decoding of the file destination of current switching to
Task, and submit the intelligent decoding task of the file destination next time switched to.
Further, after triggering switching, it may be judged whether before carrying out pre decoding, described method is also wrapped
Include the step of the triggered time point estimating switching next time；
Described intelligence decoding task, according to the triggered time point of described switching next time estimated, calculates currently available
The remaining time that file destination is decoded, and estimate file destination is decoded the required time,
With decoding required time decision-making, file destination is carried out whole figure decoding or part by relatively described remaining time
Decoding, and correspondingly decode.
Further, after estimating to obtain the triggered time point switched next time, described method also includes:
Judge that switch speed is the most too fast according to the thresholding preset, if too fast, then submit the target of current switching to
The thumbnail of file shows for user interface, performs described pre decoding the most again and judges step；The most direct
Perform described pre decoding and judge step.
Further, after judging the current file destination switched to be carried out pre decoding, also include as follows
Step:
Judge that pre decoding is the decoding of whole figure or partial decoding of h, if pre decoding is partial decoding of h, then under submitting to
After the intelligent decoding task of the file destination once switched, also include submitting the whole of the current file destination switched to
The step of figure decoding task；If pre decoding is the decoding of whole figure, then the file destination once switched on submitting to
After intelligence decoding task, also include the step submitting the partial decoding of h task of the file destination of current switching to.
Further, after judging the current file destination switched not to be carried out pre decoding, current submitting to
The intelligent decoding task of the file destination that the intelligent decoding task of the file destination of switching and submission switch next time
After, also include:
Submit the whole figure decoding task of the file destination of current switching to, and submit the file destination of current switching to
Partial decoding of h task.
Further, after triggering switching, it may be judged whether before carrying out pre decoding, described method is also wrapped
Include:
Empty decoding task queue；
Terminate all of decoding task being currently executing.
Further, before estimating the triggered time point of switching next time, it is all that termination is currently executing
Decoding task step after, described method also includes: remove caching non-present switching file destination
Before and after figure decoding file step.
Further, the method for the described triggered time point estimating switching next time is:
The switching time of set point number is carried out statistical average, it is thus achieved that average switching time, according to average switching
The triggered time point of time Estimate switching next time；Or according to estimating switching next time previous switching time
Triggered time point.
Based on the embodiment of the present invention, the present invention also provides for a kind of device realizing the switching of picture smoothness, this device
Including:
Pre decoding judge module, is used for judging whether the file destination of current switching to be carried out pre decoding；
First task management module, in the situation that the current file destination switched carried out pre decoding
Under, directly submit to the file destination after pre decoding for display, and submit the file destination that next time switches to
Intelligence decoding task；
Second task management module, in the situation that the current file destination switched did not carried out pre decoding
Under, submit the intelligent decoding task of the file destination of current switching to, and submit the file destination next time switched to
Intelligent decoding task.
Further, described device also includes:
Switching time, estimation module, for after triggering switching, estimated the triggered time point of switching next time；
Intelligence decoder module, is used for performing intelligence decoding task, and this module is according to described switching next time estimated
Triggered time point, calculate and be currently available for remaining time that file destination is decoded, and estimate mesh
Mark file is decoded the required time, by relatively described remaining time with decoding required time decision-making to mesh
Mark file carries out whole figure decoding or partial decoding of h, and correspondingly decodes.
Further, described device also includes:
Switch speed judging treatmenting module, for put according to the triggered time of switching next time estimated and preset
Thresholding judges that switch speed is the most too fast, if too fast, then submit to current switching file destination thumbnail with
Showing for user interface, then instruction pre decoding judge module performs；The most directly instruction pre decoding judges mould
Block performs.
Further, described first task management module is additionally operable to judge that pre decoding is the decoding of whole figure or part
Decoding, if pre decoding is partial decoding of h, then the intelligent decoding task of the file destination once switched on submitting to
After, also include the step submitting the whole figure decoding task of the file destination of current switching to；If pre decoding is whole figure
Decoding, then, after the intelligent decoding task of the file destination once switched on submitting to, also include submitting to currently cutting
The step of the partial decoding of h task of the file destination changed；
Described second task management module is additionally operable to the intelligent decoding task at the file destination submitting current switching to
And after submitting the intelligent decoding task of the file destination next time switched to, submit the file destination of current switching to
Whole figure decoding task, and submit the partial decoding of h task of the file destination of current switching to.
Further, described device also includes:
Task removes module, for, before estimating the triggered time point of switching next time, emptying decoding task team
Row；
Task interrupts module, and for after emptying decoding task queue, it is all of that termination is currently executing
Decoding task.
The present invention, by the pre decoding of switching file destination comes the switching of speeding up picture file, is performing pre-solution
Intelligence decoding process is used, according to remaining time and the mesh of estimation when code and the decoding task of current goal file
The mark file decoding time, decision-making carries out whole figure decoding or partial decoding of h to file destination.By energy of the present invention
When enough farthest realizing picture browsing, the smooth switching of picture, and take into account the display quality of picture, from
And promote Consumer's Experience.
Accompanying drawing explanation
Fig. 1 is the switching flow figure of picture in Picture-viewer in prior art；
The method flow diagram realizing the switching of picture smoothness that Fig. 2 provides for the embodiment of the present invention；
The process chart of the intelligent decoding task that Fig. 3 provides for the embodiment of the present invention；
The method flow diagram realizing the switching of picture smoothness that Fig. 4 provides for another embodiment of the present invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, also reference by the following examples
Accompanying drawing, the present invention is described in more detail.
The method flow diagram realizing the switching of picture smoothness that Fig. 2 provides for the present invention, specifically includes following steps:
Step 201, trigger switching after, estimate next time switching triggered time point；
The triggered time point of described switching refers to that user passes through UI interface and triggers the time point of picture switching；
The present invention needed to judge remaining time before performing the decoding task of switching file destination, root
Performing what type of decoding according to the length decision-making of remaining time, described remaining time cut equal to the next time estimated
The triggered time point changed deducts the triggered time point of current switching.
Estimate that the method for the triggered time point of switching next time can use statistical average method, i.e. to set point number
Switching time carries out statistical average, it is thus achieved that average switching time, estimates switching next time according to average switching time
Triggered time point；Or also dependent on estimating the triggered time point of switching next time previous switching time,
Add point current switching time with the time point of current switching after the time point once switched before i.e. deducting to be estimated
Next time switching triggered time point.
Step 202, judge whether the file destination of current switching to be carried out pre decoding, if then performing
Step 203；If otherwise performing step 204；
The present invention upper once switch time submit the decoding task of file destination once switched to, i.e. to currently
The file destination of switching carries out pre decoding, it is therefore an objective to improve the speed of switching.
When there is picture switching, if the success of next pictures pre decoding, regardless of pre decoding is whole
Figure or partial decoding of h figure, can display it rapidly, thus improve the speed of switching.
If step 203 carried out pre decoding to the file destination of current switching, then directly display pre decoding
After file destination, then perform step 205；
If step 204 did not carried out pre decoding to the current file destination switched, then submit current switching to
The intelligent decoding task of file destination, then performs step 205；
The intelligent decoding task of the file destination that step 205, submission switch next time.
File destination can be performed by the intelligent decoding task that the present invention provides according to the remaining time of decision-making intelligently
What type of decoding, to reach the balance of speed and picture quality.
The present invention, when performing decoding task, first carries out anticipation to the decoding time, needs the factor bag considered
Include: the length and width of image file, file size, file format etc..In one embodiment of the present invention, use
Linear prediction model, such as scheming greatly decoding, every figure has the variablees such as length and width, and file size,
A time is obtained, using the variable such as length and width and file size as independent variable, the time catch cropping of decoding after decoding
For dependent variable, obtain a functional relationship between independent variable and dependent variable by historical record, by this letter
Picture can be made the prediction of decoding time by number relation.In addition to linear prediction model, also use piecewise linear function
The nonlinear function forecast model of number, and the machine learning algorithm of other training Nonlinear Prediction Models, than
Such as neutral net, support vector machine (Support Vector Machine, SVM, a kind of trainable machine
Learning method) etc..
In one embodiment of the present invention, it is provided that described intelligence decoding task handling process as it is shown on figure 3,
The preferred embodiment constructs three decoding predictor, the most whole figure decoding predictor, 1/4th solutions
Code predictor and 1/8th decoding predictor, they are three independent decoding predictor.
Step A1, the triggered time point switched according to the next time estimated, calculate and be currently available for file destination
RemainTime remaining time being decoded；
The time point once switched before assuming is Tp, and the time point that photo current switches is Tc, when
The front time is T (i.e. the time point of the actual execution of decoding task), then predict the switching point Tf=of next figure
Tc+ (Tc-Tp), and remainTime remaining time is Tf-T.
Step A2, by decoding predictor estimate file destination is carried out the time needed for dissimilar decoding；
Step A3, judge the whole figure decoding time of prediction whether less than described remaining time, if less than; would perform
Whole figure decodes, and otherwise performs step A4；
Step A4, judge 1/4th decoding times of prediction whether less than described remaining time, if less than,
Perform 1/4th decodings, otherwise perform step A5；
Step A5, execution 1/8th decoding.
The strategy of above-mentioned decoding step is: when decoding the time more than whole figure remaining time, the most preferentially carry out whole
Figure decoding, the most again the decoding time of rating unit decoding, the criterion of institute's foundation is for trying one's best in the remaining time
Inside decode the picture of maximum.
The decoding of described whole figure refers to intactly the picture on disk is loaded into internal memory, and speed is relatively slow, figure picture element
Measure undistorted, it is adaptable to slowly browse among the scene of picture.
In the present invention one preferred embodiments, described partial decoding of h refers to by reducing algorithm, decodes acquisition one
Determine the picture of scaling, such as in 1/4 size of the picture on disk or the content of 1/8 size being loaded into
Depositing, speed, picture quality is the most general.Reduce calculation and can use interpolation algorithm, or speed is faster
Extraction algorithm, such as, take a line every four row or eight row, and take the mode of string every four row or eight row and contract
Little.Partial decoding of h is applicable to switch speed scene faster, uses partial decoding of h to replace whole under this scene
Figure decoding, reaches a kind of acceptable balance between display speed and display quality.
Based on the steps flow chart shown in Fig. 2, with reference to Fig. 4, estimating to obtain the triggered time point of switching next time
After, also include the judgment processing steps of switch speed:
Step B1, according to estimate next time switching triggered time point judge and preset thresholding judge switching speed
Spend the most too fast, if too fast, then perform step B2, otherwise perform step 202；
Difference between this step is put according to the triggered time of switching next time of estimation and put current switching time is sentenced
Disconnected switch speed is the most too fast, if time difference is less than the thresholding preset, is then judged to too fast, described thresholding
Value can obtain according to test, and e.g., less than 200ms is taken as switching at a slow speed.
In the case of being switched fast, owing to carrying out the decoding of the most radical row intelligence, therefore in situation about being switched fast
Under directly display the thumbnail of file destination, to accelerate the speed of changing interface, and in situation about switching at a slow speed
Under, owing to there being the time of abundance can complete intelligence decoding, picture therefore can be shown after decoding completes again.
Step B2, at the thumbnail of user interface display switching file destination, performs step 202；
Based on the steps flow chart shown in Fig. 2, with reference to Fig. 4, judging the file destination of current switching to be entered
Went after pre decoding, also comprised the steps:
Step C1, judging that whether pre decoding is the decoding of whole figure, if being carried out step C2, otherwise performing step
C3；
After step C2, the intelligent decoding task of file destination once switched on submitting to, submit current switching to
The partial decoding of h task of file destination；
Preferably, the partial decoding of h task submitted in this step does not comprise the concrete part solution performing which kind of rank
The judgement step of code, system can set, according to certain strategy, the part which kind of rank the partial decoding of h carried out is
Decoding, such as, can unify to be set as that 1/4th decode.
After step C3, the intelligent decoding task of file destination once switched on submitting to, submit current switching to
The whole figure decoding task of file destination.
Based on the steps flow chart shown in Fig. 2, with reference to Fig. 4, judging the file destination of current switching not to be entered
Went after pre decoding, the intelligent decoding task submitting the current file destination switched to and submission once switched
File destination intelligent decoding task after, also include:
Step D1, the whole figure decoding task of the current file destination switched of submission；
Step D2, the partial decoding of h task of the current file destination switched of submission.
Submit once the whole figure decoding of current figure again to, to guarantee finally to show the whole of current switching file destination
Figure, in order to user may perform the consideration of reversely switching, the partial decoding of h of current figure also to guarantee to generate.
Based on the steps flow chart shown in Fig. 2, with reference to Fig. 4, before estimating the triggered time point of switching next time,
Described method also includes:
A1, include and empty decoding task queue；
If after handover, in task queue, also it is not carried out complete decoding task, then illustrates already without wanting
Perform these decoding task again, therefore should empty task queue, discharge resource.
The all of decoding task that A2, termination are currently executing.
The purpose of the decoding task that termination is currently executing is the solution that need not perform corresponding picture at main thread
During code task, such as too fast due to switching, have already skipped through the display opportunity of photo current, main thread is permissible
One decoding is set and interrupts position, when waiting the decoding thread taking turns to backstage to run, position can be interrupted according to this and exit solution
Code, calculates resource to save.
Preferably, after described step A2 also, described method also includes: remove the non-present switching of caching
File destination before and after figure decoding file step.The purpose of this step is to minimize the use of internal memory,
Only scheming before and after current figure, the figure of next figure being i.e. likely to become switching does pre decoding, if performed
Switching, then before and after it, figure there occurs change, needs to be discharged, so the internal memory of figure before and after before
Taking of internal memory can be reduced, improve internal memory service efficiency.
The present invention also provides for a kind of device realizing the switching of picture file smoothness, and this device includes:
Pre decoding judge module, is used for judging whether the file destination of current switching to be carried out pre decoding；
First task management module, in the situation that the current file destination switched carried out pre decoding
Under, directly submit to the file destination after pre decoding for display, and submit the file destination that next time switches to
Intelligence decoding task；
Second task management module, in the situation that the current file destination switched did not carried out pre decoding
Under, submit the intelligent decoding task of the file destination of current switching to, and submit the file destination next time switched to
Intelligent decoding task；
Preferably, described device also includes:
Switching time, estimation module, for after triggering switching, estimated the triggered time point of switching next time；
Intelligence decoder module, is used for performing intelligence decoding task, and this module is according to described switching next time estimated
Triggered time point, calculate and be currently available for remaining time that file destination is decoded, and estimate mesh
Mark file is decoded the required time, by comparing described remaining time and decoding required time decision-making and holding
The whole figure of file destination is decoded or partial decoding of h by row.
Preferably, described device also includes: switch speed judging treatmenting module, and this module is for according to estimation
Next time switching triggered time point and preset thresholding judge that switch speed is the most too fast, if too fast, then carry
The thumbnail handing over the file destination of current switching shows for user interface, then instruction pre decoding judge module
Perform；The most directly instruction pre decoding judge module performs.
Preferably, described first task management module is additionally operable to judge that pre decoding is the decoding of whole figure or part solution
Code, if pre decoding is partial decoding of h, then after the intelligent decoding task of the file destination once switched on submitting to,
Also include the step submitting the whole figure decoding task of the file destination of current switching to；If pre decoding is the decoding of whole figure,
After the intelligent decoding task of the file destination then once switched on submitting to, also include the mesh submitting current switching to
The step of the partial decoding of h task of mark file；
Preferably, described second task management module is additionally operable to the intelligence at the file destination submitting current switching to
After the intelligent decoding task of the file destination that decoding task and submission switch next time, submit the mesh of current switching to
The whole figure decoding task of mark file, and submit the partial decoding of h task of the file destination of current switching to.
Preferably, described device also includes:
Task removes module, and this module is for, before estimating the triggered time point of switching next time, emptying decoding
Task queue；
Task interrupts module, and this module is for after emptying decoding task queue, and termination is currently executing
All of decoding task.
The steps flow chart of the method that apparatus above provides based on the present invention realizes, and its functional module comprised is all
Being the steps flow chart for completing in described method and set, identical here is omitted with repeating part.
The above, only presently preferred embodiments of the present invention, it is not intended to limit the protection model of the present invention
Enclose.
Claims (11)
1. the method realizing the switching of picture smoothness, it is characterised in that the method includes:
Before handover the file destination of switching next time is carried out pre decoding；
After triggering switching, estimate the triggered time point of switching next time；
According to the triggered time point of described switching next time estimated, calculate and be currently available for file destination is carried out
The remaining time of decoding, and estimate file destination is decoded the required time, by relatively described residue
Time and decoding required time decision-making carry out whole figure decoding or partial decoding of h to file destination, and carry out corresponding
Ground decoding；
Judge whether the file destination of current switching to be carried out pre decoding, if having carried out pre decoding, then
Directly display the file destination after pre decoding, and submit the intelligent decoding task of the file destination next time switched to；
If not carrying out pre decoding, then submit the intelligent decoding task of the file destination of current switching to, and submit next to
The intelligent decoding task of the file destination of secondary switching.
Method the most according to claim 1, it is characterised in that estimating to obtain the triggering of switching next time
After time point, described method also includes:
Judge that switch speed is the most too fast according to the thresholding preset, if too fast, then submit the target of current switching to
The thumbnail of file shows for user interface, performs described pre decoding the most again and judges step；The most direct
Perform described pre decoding and judge step.
Method the most according to claim 1, it is characterised in that judging to the current target switched
After file carried out pre decoding, also comprise the steps:
Judge that pre decoding is the decoding of whole figure or partial decoding of h, if pre decoding is partial decoding of h, then under submitting to
After the intelligent decoding task of the file destination once switched, also include submitting the whole of the current file destination switched to
The step of figure decoding task；If pre decoding is the decoding of whole figure, then the file destination once switched on submitting to
After intelligence decoding task, also include the step submitting the partial decoding of h task of the file destination of current switching to.
Method the most according to claim 1, it is characterised in that judging not to the current target switched
After file carried out pre decoding, submitting the intelligent decoding task of the current file destination switched to and submitting next to
After the intelligent decoding task of the file destination of secondary switching, also include:
Submit the whole figure decoding task of the file destination of current switching to, and submit the file destination of current switching to
Partial decoding of h task.
Method the most according to claim 1, it is characterised in that after triggering switching, it may be judged whether
Before carrying out pre decoding, described method also includes:
Empty decoding task queue；
Terminate all of decoding task being currently executing.
Method the most according to claim 5, it is characterised in that in the triggered time estimating switching next time
Before Dian, after the step of all of decoding task that termination is currently executing, described method also includes:
The step of the decoding file of figure before and after the file destination of the non-present switching removing caching.
Method the most according to claim 1, it is characterised in that during the triggering of described estimation switching next time
Between point method be:
The switching time of set point number is carried out statistical average, it is thus achieved that average switching time, according to average switching
The triggered time point of time Estimate switching next time；Or according to estimating switching next time previous switching time
Triggered time point.
8. the device realizing the switching of picture smoothness, it is characterised in that this device includes:
Switching time, estimation module, for after triggering switching, estimated the triggered time point of switching next time；
Pre decoding judge module, is used for judging whether the file destination of current switching to be carried out pre decoding；
First task management module, in the situation that the current file destination switched carried out pre decoding
Under, directly submit to the file destination after pre decoding for display, and submit the file destination that next time switches to
Intelligence decoding task；
Second task management module, in the situation that the current file destination switched did not carried out pre decoding
Under, submit the intelligent decoding task of the file destination of current switching to, and submit the file destination next time switched to
Intelligent decoding task；
Intelligence decoder module, is used for performing intelligence decoding task, and this module is according to described switching next time estimated
Triggered time point, calculate and be currently available for remaining time that file destination is decoded, and estimate mesh
Mark file is decoded the required time, by relatively described remaining time with decoding required time decision-making to mesh
Mark file carries out whole figure decoding or partial decoding of h, and correspondingly decodes.
Device the most according to claim 8, it is characterised in that described device also includes:
Switch speed judging treatmenting module, for put according to the triggered time of switching next time estimated and preset
Thresholding judges that switch speed is the most too fast, if too fast, then submit to current switching file destination thumbnail with
Showing for user interface, then instruction pre decoding judge module performs；The most directly instruction pre decoding judges mould
Block performs.
Device the most according to claim 8, it is characterised in that
Described first task management module is additionally operable to judge that pre decoding is the decoding of whole figure or partial decoding of h, if in advance
Decoding is partial decoding of h, then, after the intelligent decoding task of the file destination once switched on submitting to, also include
Submit the step of the whole figure decoding task of the file destination of current switching to；If pre decoding is the decoding of whole figure, then exist
After submitting the intelligent decoding task of the file destination next time switched to, also include the target literary composition submitting current switching to
The step of the partial decoding of h task of part；
Described second task management module is additionally operable to the intelligent decoding task at the file destination submitting current switching to
And after submitting the intelligent decoding task of the file destination next time switched to, submit the file destination of current switching to
Whole figure decoding task, and submit the partial decoding of h task of the file destination of current switching to.
11. devices according to claim 8, it is characterised in that described device also includes:
Task removes module, for, before estimating the triggered time point of switching next time, emptying decoding task team
Row；
Task interrupts module, and for after emptying decoding task queue, it is all of that termination is currently executing
Decoding task.
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| CN102142242A (en) * | 2010-02-01 | 2011-08-03 | 鸿富锦精密工业（深圳）有限公司 | Method for switching display of pictures in electronic device |
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