CN102547192B

CN102547192B - A kind of method that fluid drive broadcasting and playback function are set to video image

Info

Publication number: CN102547192B
Application number: CN201010599467.4A
Authority: CN
Inventors: 晏晓锋; 邓蓉蓉
Original assignee: China Digital Video Beijing Ltd
Current assignee: China Digital Video Beijing Ltd
Priority date: 2010-12-21
Filing date: 2010-12-21
Publication date: 2017-12-29
Anticipated expiration: 2030-12-21
Also published as: CN102547192A

Abstract

The invention discloses a kind of method that fluid drive broadcasting and playback function are set to video image, comprise the following steps：On picture, user's left mouse button clicks on target and starts to record；Mouse drag target moves；Left mouse button lifts end and recorded, and obtains the electrodeless variable-speed effect of recording.Embodiments of the invention propose chooses target point in station synchronization making, pass through computing, generate track, and record the implementation that mouse movement obtains electrodeless variable-speed effect, simplify and add speed change, the whole process of playback to material, and accuracy is improved, and can be automatically to material addition forwarding and slowing, playback.

Description

A kind of method that fluid drive broadcasting and playback function are set to video image

Technical field

The present invention relates to field of media, more particularly to a kind of fluid drive broadcasting and playback function of being set to video image Method.

Background technology

Target motion tracking technology is widely used in television program designing at present, and it can be caught in shooting picture automatically The movement locus of moving object.Application to track also has a variety of methods, currently common are：For moving object itself It is stable；Using the motion, rotation, deformation to small icon, subtitle etc..

In instruction film is competed in all kinds of sports, such as hundred meter dash, it is real-time, continuous to shoot the picture got 's.But played back when being put soon during slow play when being explained if necessary to which the action of sportsman is coordinated, only have in the prior art A step by a step to motion analysis, to material plus speed change, playback, whole process is very cumbersome and is not easy accurately to control.

The content of the invention

Embodiments of the invention provide a kind of method that fluid drive broadcasting and playback function are set to video image, with reality Show the speed of target in the control video of What You See Is What You Get, stop walking, and automatically to material addition forwarding and slowing, playback.

To reach above-mentioned purpose, one embodiment of the invention offer is a kind of to set fluid drive to play and return video image The method of playing function, comprises the following steps：

On video frames, mouse chooses target and starts to record；

Mouse control target moves；Specifically refer to：When the mouse control target moves, it is spaced according to set time certainly Dynamic key framing；It is described to be spaced automatic key framing according to set time, if time interval is equal to or more than the time of setting Interval, then need the time-code by now material to record, and time-code is present in an array；The number and record of the key frame The number quantity of time-code is consistent；It is considered as within each two key frame and at the uniform velocity plays；

Mouse stops control and terminates to record.

It is described start recording before, in addition to choose target point, and set record key frame time interval.

It is described start record when, include record user set record time interval, setting record once play into Spend the time.

It is described start recording after, in addition to program record recording starting time and record start when material residing for when Code.

After the end is recorded, record end recording time, total time is recorded, if the recording total time is more than plain Material raw footage, it is necessary to plus slow play, the velocity amplitude of slow play is recording time divided by material length；It is described recording total time if fewer than For material raw footage, it is necessary to accelerate to put, the velocity amplitude put soon is recording time divided by material length.

Described to record the whole operation recording time that total time is user, described record needs to play total time for material Time, extension or the total duration for shortening material.

Compared with prior art, embodiments of the invention have advantages below：

Embodiments of the invention propose chooses target point in station synchronization making, by computing, generates track, and The implementation that mouse movement obtains electrodeless variable-speed effect is recorded, simplifies and adds speed change, the whole process of playback to material, and carry High accuracy, can with What You See Is What You Get by mouse drag come the speed of control targe, stop walking, it is and automatically fast to material addition Slow play, playback.

Brief description of the drawings

Fig. 1 is a kind of method that fluid drive broadcasting and playback function are set to video image in embodiments of the invention Flow chart；

Fig. 2 is a kind of method that fluid drive broadcasting and playback function are set to video image in embodiments of the invention Flow chart.

Embodiment

With reference to the accompanying drawings and examples, embodiments of the present invention are described in further details, it is clear that described Embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ability The every other embodiment that domain those of ordinary skill is obtained under the premise of creative work is not made, belongs to guarantor of the present invention The scope of shield.

Embodiments of the invention are a kind of video image is set fluid drive broadcasting and playback function method process, should Flow as depicted in figs. 1 and 2, comprises the following steps：

Step S101, motion tracking, target point is chosen, calculate target trajectory, generate track；

How realization of goal mouse drag target is browsed firstly the need of explanation：

Target point is the central point of the target of user or spectators' concern (or relative to constant certain in target location Point), tracing point is the position coordinates in certain frame picture where target, and track is track point set.Complete to generate in motion tracking After track, target point and tracing point are one-to-one.And it with its time-code is in video one that the position of target point, which is, Corresponding to one, so tracing point and time-code are also one-to-one.User clicks on target, and due to the presence of error, this point is not It may be completely superposed with target point.The track of target point is now traveled through, we can find a tracing point and mouse clicking point Closest (if more than two tracing points, it is specified that the point of time-code minimum is selected), and this tracing point has one Time-code corresponds to therewith, and we control video search (seek) picture to this time-code, it is ensured that the target in picture infinitely connects Nearly mouse clicking point.If now mouse is moved to another position, the target track of another infinite approach similarly can be also found Mark point, when code-point, and it is nearest with mouse in moment picture to be searched into target, it is possible to realizes that surface seems to use mouse control The effect of the motion of target processed.That is, we are to realize picture search (seek) automatically by mouse movement, it is this Individual search result is the target infinite approach mouse point in picture.

Step S102, user set record key frame time interval；

Step S103, user select to record；

Step S1031, the key frame time interval that now program record user is set, that is, recorded one every how many seconds Secondary playing progress rate, using millisecond as least unit, default to 1000 milliseconds.

Step S104, on picture, user's left mouse button clicks on target and starts to record；

Step S1041, now program record recording starting time；

Step S1042, record record time-code residing for material when starting and start to record time-code；

Step S1043, program search picture to time-code；Target is moved to mouse point.

Step S105, the movement of mouse drag target；

Step S106, automatic key framing is spaced according to set time；

Step S1061, every the n seconds (have default value and can be set by user) automatically record time-code, it is necessary to judge whether to Key frame time is recorded, if time interval is equal to or more than the time interval of user's setting in step S102, is needed this Shi Sucai time-code is recorded.Time-code is stored in an array；

Step S1062, searching screen to time-code, target are moved to mouse point.

Step S107, mouse stop control and terminate to record, and obtain the electrodeless variable-speed effect of recording.

Step S1071 records record the end time；

Step S1072, total recording time is calculated, the difference for recording end time and recording starting time is to record total time That is total duration；

Step S1073, extension or shorten material arrive total duration, if record total time more than material raw footage, it is necessary to plus Slow play, the velocity amplitude of slow play is recording time divided by material length；If fewer than material raw footage, it is necessary to accelerate to put, put soon Velocity amplitude is recording time divided by material length.Forwarding and slowing mentioned here be a kind of common stunt of nonlinear editing system or Person operates.

So, material is just elongated or shortened.But it is by the uniform velocity forwarding and slowing, no to be to speed up material after slowing down The acceleration change that user pulls target can be embodied, playback can not be embodied.

Step S1074, there is the effect of change and the playback of acceleration, it is necessary to add variable speed stunt to material.

Step S1075, by record time-code number key framing, each time-code divided by material original duration of recording is equal to each note The playing progress rate of record；

The number of step S1076 key frames is consistent with the number for recording time-code, and key frame is storage playing progress rate, this Progress is the time-code of each record divided by the original length of material, obtains the broadcasting speed of each record, is exactly in new reproduction time Old playing progress rate is recorded on point.Key frame is for recording non-volume special-effect parameter information, such as the key frame described in this example It is exactly the key frame of electrodeless variable-speed；

Step S1077, to progress corresponding to the setting of each key frame.

Electrodeless variable-speed be a kind of change material playing progress rate of nonlinear editing system to control the stunt of material, it can be with Realize non-broadcasting and playback at the uniform velocity in material.Typically, the control of its playing progress rate can be controlled automatically in this example Playing progress rate processed；Playing progress rate in variable speed is stored in key frame.Key frame is for recording non-volume special-effect parameter Information, for example key frame described in this example is exactly the key frame of electrodeless variable-speed；

It is considered as between each two key frame and at the uniform velocity plays, so the intra-record slack byte time is more much more detailed, but data volume is also got over Greatly；

Step S108, the essence ultimately produced is not new material, but reference description of the material in non-volume.Need to generate Then need that material is synthesized into output with non-compile during new physicses material.

Embodiments of the invention propose chooses target point in station synchronization making, by computing, generates track, and The implementation that mouse movement obtains electrodeless variable-speed effect is recorded, simplifies and adds speed change, the whole process of playback to material, and carry High accuracy, and can be automatically to material addition forwarding and slowing, playback.

Disclosed above is only the specific embodiment of the present invention, and still, the present invention is not limited to this, any ability What the technical staff in domain can think change should all fall into protection scope of the present invention.

Claims

A kind of 1. method that fluid drive broadcasting and playback function are set to video image, it is characterised in that comprise the following steps：

On video frames, mouse chooses target and starts to record；

Mouse control target moves；Specifically refer to：When the mouse control target moves, interval is automatic according to set time adds Key frame；It is described to be spaced automatic key framing according to set time, if time interval is equal to or more than the time interval of setting, The time-code by now material is then needed to record, time-code is present in an array；The number of the key frame and record time-code Number quantity it is consistent；It is considered as within each two key frame and at the uniform velocity plays；

Mouse stops control and terminates to record；

It is described start recording before, in addition to choose target point, and set record key frame time interval；

It is described start record when, include record user set record time interval, setting record a playing progress rate when Between；

It is described start recording after, in addition to program record recording starting time and record start when time-code residing for material；

After the end is recorded, record end recording time, total time is recorded, if the recording total time is more than material original Length, it is necessary to plus slow play, the velocity amplitude of slow play is recording time divided by material length；The recording total time is if fewer than material For raw footage, it is necessary to accelerate to put, the velocity amplitude put soon is recording time divided by material length；

Described to record the whole operation recording time that total time is user, the recording total time is material when needing to play Between, extension or the total duration for shortening material.