CN103971391A - Animation method and device - Google Patents
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- CN103971391A CN103971391A CN201310041087.2A CN201310041087A CN103971391A CN 103971391 A CN103971391 A CN 103971391A CN 201310041087 A CN201310041087 A CN 201310041087A CN 103971391 A CN103971391 A CN 103971391A
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Abstract
The invention relates to an animation method. The animation method includes acquiring a picture array containing several pictures; selecting a target area for the picture array, and taking other areas except the target area as background areas; subjecting the background area of each picture in the picture array to staticizing; animating the staticized picture array. The invention further provides an animation device. By the aid of the animation method and device, the characteristic in the animation can be distinguished by creating that local dynamic animation and animation size is effectively reduced.
Description
Technical field
The present invention relates to technical field of image processing, particularly a kind of animation producing method and device.
Background technology
Picture is description a kind of similarity, vividness or the description of objective objects, is information carrier the most frequently used in human social activity.According to statistics, the information nearly 75% that people obtains is from vision.Ancients say that " it is better to see once than hear a hundred times ", " very clear " are very vivid examples, have all reflected the effect unique of picture in information is transmitted.Along with the quickening of scientific and technological development and people's rhythm of life, modern has entered such epoch: word allows people be weary of, needs picture constantly to stimulate eyeball, excites aspiration to knowledge and touches numb nerve.By in the process of network sharing information, the descriptive power of Word message is limited, and that picture has advantages of is vivid, contain much information.
Video is the picture moving up, to scene choose, story cuts out higher requirement.But domestic consumer is not owing to passing through special training or lacking corresponding background knowledge, and the video of taking is mostly dilatory in rhythm, and bright spot is outstanding.While, the large area of inconvenient video was propagated because the size of the video that shooting obtains is conventionally all larger.Therefore, after capture video, also need video to carry out flim editing and making, but it is very high to make threshold.
In addition, conventionally adopt at present the mode of Flash animation, GIF picture or 3D animation to make information display and the propagation that animation enriches more.But Flash animation can not be made rich color and change soft animation, and intermediate color is stiff single.GIF picture making is simple, and wide material sources are compatible strong, but support at most 256 kinds of colors, if picture color is too abundant, is converted to GIF picture and will loses some colors.GIF or Flash file generated and cost of manufacture are very high, need professional software or method to make, and cannot generate the animation that only has local dynamic station.Although and 3D animation is effective, because file is very large, sound paintings product seldom adopt.
Summary of the invention
In view of this, be necessary to provide a kind of animation producing method and device, can be by staticize processing is carried out in the background area of plurality of pictures, thus the animation that creates local dynamic station is to give prominence to the bright spot in animation, and effectively reduces the size of animation.
An animation producing method, comprising: obtain the picture array that comprises plurality of pictures; For described picture array, select a target area, other regions outside described target area are background area; For carrying out staticize processing in the background area of the every pictures in described picture array; And generate animation according to the picture array completing after staticize is processed.
An animation producing device, comprising: acquisition module, for obtaining the picture array that comprises plurality of pictures; Select module, be used to described picture array to select a target area, other regions outside described target area are background area; Processing module, is used to the background area of the every pictures in described picture array to carry out staticize processing; And generation module, for generating animation according to the picture array completing after staticize is processed.
With respect to prior art, the invention has the beneficial effects as follows: the present invention can be by staticize processing is carried out in the background area of plurality of pictures, thereby the animation that creates local dynamic station is to give prominence to the bright spot in animation, and effectively reduces the size of animation.
For above and other object of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and coordinate appended graphicly, be described in detail below.
Accompanying drawing explanation
The process flow diagram of the animation producing method that Fig. 1 provides for the embodiment of the present invention.
Fig. 2 is for creating and using and cover the process flow diagram that plate is processed picture array.
Fig. 3 is for to cover the schematic diagram on background picture by painting layer.
The process flow diagram of Fig. 4 for animation is carried out to color optimization.
The process flow diagram of the animation producing device that Fig. 5 provides for the embodiment of the present invention.
Embodiment
For further setting forth the present invention, realize technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, to according to the specific embodiment of the present invention, structure, feature and effect thereof, be described in detail as follows.
Consult shown in Fig. 1, the embodiment of the present invention provides a kind of animation producing method, and it comprises the following steps:
Step S1, obtains the picture array that comprises plurality of pictures;
Step S2, selects a target area for described picture array, and other regions outside described target area are background area;
Step S3, for carrying out staticize processing in the background area of the every pictures in described picture array;
Step S4, generates animation according to the picture array completing after staticize is processed.
Below in conjunction with instantiation, be described in further detail:
Step S1 can intercept a video segment from one section of video according to user's input, then according to predetermined frame per second, for example 20 frames per second intercept plurality of pictures to obtain described picture array from described video segment.This section of not free restriction of video.But described video segment for example, for having the fragment of bright spot, baby's laugh loudly fragment in one section of video in this section of video.Therefore this video segment has time restriction, conventionally between 1 to 3 second.This section of video can obtain by instant shooting of camera head, also can directly from local storage unit, acquire.
In addition, step S1 can also choose plurality of pictures and forms described picture array from local storage unit according to user's input.The picture of described plurality of pictures has continuity.
Target area described in step S2 is in described picture array, to have the region of bright spot, one group of baby's laugh loudly picture for example, and in every pictures, the region at baby's face place is described target area.Other regions outside described target area are background area.
In the present embodiment, can select described target area according to the described picture array of being input as of user.For example, on the mobile device with touch-screen, when in showing described picture array, the described touch-screen of any pictures detects user's touch operation, record the mobile route of described touch operation process, described mobile route in picture array on each picture corresponding region be described target area.If on the computing machine with mouse or contact panel, the mobile route that also can be marked on shown picture by recording light is selected described target area.In addition, user can also select described target area by the coordinate range of target area in the described picture array of direct input.
Step S3 is that staticize processing is carried out in the background area of the every pictures in described picture array, thereby makes described picture array realize local dynamic station in target area.Particularly, the following two kinds of modes that comprise are processed in described staticize.Wherein first kind of way is: from described picture array, select a background picture, then the background area of other pictures except described background picture in described picture array is replaced with to the background area of described background picture.Described background picture can be the first pictures in this picture array, can be also any pictures in this picture array.
In a concrete example, can use constituency is described target area, non-election district is that the illiteracy plate of the background area of described background picture covers each pictures in described picture array successively, thereby the background area that makes other pictures except described background picture in described picture array is all replaced by the background area of described background picture, and in picture array, the target area of every pictures all remains unchanged.The constituency of described illiteracy plate is protected region, and non-election district is processed region.
Consult shown in Fig. 2, for creating and using and cover the example flow diagram that plate is processed picture array.
Step S11, creates a painting layer and covers on described background picture.As shown in Figure 3, described painting layer is a translucent black coating identical with described background picture size.The transparency of described painting layer can rule of thumb be set.In the present embodiment, the Alpha value that represents painting layer transparency is made as to 0.3.If described painting layer comprises 256 grades of rgb colors and transparency, in described painting layer, the RGBA value of each pixel can be expressed as (0,0,0,0.3) or (0,0,0,77) (255*0.3=77).
Step S12, mark target area on described painting layer.First, by the mode described in above-mentioned steps S2, on shown painting layer, according to the described picture array of being input as of user, select described target area.Then, the rgb value of each pixel in the target area of described painting layer is made as to 255, the target area that is about to described painting layer is depicted as white.Thereby in the target area of described painting layer, the RGBA value of each pixel is set as (255,255,255,77).Be subject to the impact of painting layer transparency, the target area that the actual displayed effect of the target area after being labeled is painting layer is brighter than background area.
Step S13, generates and covers plate according to the target area of institute's mark.Particularly, travel through all pixels of described painting layer, when the RGBA of certain pixel value is not (0,0,0,77), time, this pixel Alpha value of corresponding pixel points in described background picture is revised as to 0, be equivalent to the target area of background picture to scratch and remove, thereby generate described illiteracy plate by described background picture.Hence one can see that, the target area that the constituency of described illiteracy plate is described background picture, the background area that non-election district is described background picture.
Step S14, carries out overlap-add procedure by each pictures in generated illiteracy plate and described picture array.When to two pictures overlap-add procedure, after stack, in picture, the computing formula of the rgb value C of each pixel is: C=α A+ (1-α) B.Wherein, A represents the rgb value of pixel in the picture of upper strata, and α represents the transparency Alpha value of upper strata picture, and B represents the rgb value of corresponding pixel points in lower floor's picture.
Therefore, after picture in described illiteracy plate and described picture array is superposeed respectively, in the target area of this picture, the rgb value of each pixel does not change, and in the background area of this picture, the rgb value of each pixel is replaced by the rgb value of corresponding pixel points in background picture.In other words, the background area that is about to other pictures except described background picture in described picture array replaces with the background area of described background picture.
The second way that described in step S3, staticize is processed is: for adding translucent mask layer in the background area of every pictures in described picture array.The transparency of described mask layer can free setting, and the transparency of described mask layer is set littlely, and the visibility of the background area of the picture being covered is lower.The transparency of described mask layer is set greatlyr, and the visibility of the background area of the picture being covered is higher.For the background area of every pictures in described picture array, add after translucent mask layer, the target area of described picture remains unchanged, but the reduction of the visibility of background area, thereby the target area that can give prominence to picture.
In the present embodiment, also can use identical with picture size in described picture array, and constituency is described target area, non-election district covers each pictures in described picture array successively for the illiteracy plate with the translucent mask layer of certain color, thereby for adding translucent mask layer in the background area of every pictures in described picture array.
In step S4, before generating animation, broadcasting speed and the playing sequence of the plurality of pictures comprising in the picture array after staticize is processed can also be first set, compact with the animation rhythm that guarantees to generate, be unlikely to too dilatory.Described playing sequence comprises order, inverted order and three kinds of modes of loop play, by the playing sequence of the plurality of pictures in described picture array is set, can make generated animation present the result of broadcast of expection, and the water for example sprinkling away flows back to again.Optionally, before generating animation, can also to completing the plurality of pictures comprising in the picture array after staticize is processed, carry out filter processing according to user's input, make generated animation realize special visual effect.The for example strain willow under dazzling springtime, an or graceful figure viewed from behind in dim misty rain.
Animation described in step S4 is picture or the video of one section of local dynamic station, micro-video of the MOV form for example creating in the exploitation iOS of Apple operating system.In a concrete example, first, in described iOS operating system, create the context (context) of a bitmap extracting in based on array, in described context, draw the plurality of pictures in described picture array, and described contextual image stack attribute is set.Then, in described context, to draw constituency be described target area in stack, the background area that non-election district is described background picture or with the illiteracy plate of the translucent mask layer of certain color.Finally, stack is drawn to the picture obtaining and replace the bitmap of correspondence position in described array, thereby generate micro-video of described MOV form.
Owing to only having part in generated animation in dynamically, therefore can effectively reduce the size of described animation, be convenient to share on the internet propagation, can give prominence to the bright spot in animation simultaneously.In addition, can also increase for generated animation some additional informations, such as word, background music etc., to strengthen the interest of described animation.
Generated animation is being shared in the process of propagation, conventionally described animation can uploaded onto the server, also can directly by the interface of social Platform Server, share propagation.For adapt on webpage or the Web of different terminal equipment on seamlessly browse described animation, can be GIF form by described animated transition.GIF form has compatible strong feature, is a kind of picture format that is widely used in transmitting between webpage.
Yet GIF form is at most only supported the conversion of 8 256 kinds of colors, and common video is the true color of 24.Therefore, when described animated transition is GIF form, may face the problem of cross-color, need in transfer process, carry out color optimization.
In the present embodiment, can be by not using in described animation or the less color using replaces with the more several color of access times, thus reduce the size of animation, and at utmost guaranteeing that described animation is undistorted.Particularly, consult shown in Fig. 4, generated animation carried out to color optimization and comprise the following steps:
Step S4.1, adds up the rgb value of each pixel in described animation, and the access times of every kind of rgb value are sorted.Particularly, can travel through each pixel in described animation, all rgb values that use in described animation are formed to a chained list, each node in chained list represents a kind of color, for the additional count value of each node, represent the access times of described animation to every kind of rgb value simultaneously.In order to improve inquiry velocity, also can use the data structure of Octree (Octree) to add up the access times of every kind of rgb value in described animation.
Step S4.2, obtains the rgb value of the given category number coming above, generates palette.Because GIF form is supported at most 256 kinds of colors, therefore described given category number can be 256.Described palette is for upgrading the rgb value of described each pixel of animation.
Step S4.3, is updated to rgb value corresponding in described palette by the rgb value of each pixel in described animation.In generated palette, inquire about in the process of the rgb value corresponding with each pixel in described animation, conventionally use nearest matching strategy: each pixel that travels through described animation, in palette, whether inquiry there is the rgb value identical with the rgb value of this pixel, if exist, without the rgb value that upgrades this pixel.If do not exist, in described palette, inquire about the rgb value the most close with the rgb value of this pixel, the most close rgb value described in then the rgb value of this pixel being updated to.The whether the most close method of rgb value that judges rgb value in described palette and this pixel can be for example method of least squares.
In another example, also can carry out color optimization for each pictures in described animation, will in each pictures, have the color of use or less use to replace with the more several color of access times in this pictures.This method can guarantee that the every pictures in animation has good quality of colour, and distortion level is less, but for comprising the more animation of picture number, this method also can make animation have larger size.
Generated animation carried out color optimization and is converted to after GIF form, the animation of the GIF form obtaining can be uploaded onto the server, for user oneself or other users, browsing or download described animation.In addition, also can first generated animation be uploaded onto the server, by described server, this animation be carried out to color optimization, and be converted to GIF form, to adapt to the demand of sharing propagation between network.
Consult shown in Fig. 5, the embodiment of the present invention also provides a kind of animation producing device 10, comprises acquisition module 101, selects module 102, processing module 103 and generation module 104.Be appreciated that each above-mentioned module refers to computer program or program segment, for carrying out certain one or more specific function.In addition, the differentiation of above-mentioned each module does not represent that actual program code also must separate.
Acquisition module 101, for obtaining the picture array that comprises plurality of pictures;
Select module 102, be used to described picture array to select a target area, other regions outside described target area are background area;
Processing module 103, is used to the background area of the every pictures in described picture array to carry out staticize processing; And
Generation module 104, for generating animation according to the picture array completing after staticize is processed.
For the specific works process of above each module, the animation producing method that can provide with further reference to the embodiment of the present invention, no longer repeats at this.
In addition, the embodiment of the present invention also provides a kind of computer-readable recording medium, is stored with computer executable instructions, and above-mentioned computer-readable recording medium is for example for example CD, hard disk or flash memory of nonvolatile memory.Above-mentioned computer executable instructions is for allowing computing machine or similar arithmetic unit complete the various operations of above-mentioned animation producing method.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet not in order to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be not depart from technical solution of the present invention content, any brief introduction of above embodiment being done according to technical spirit of the present invention is revised, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (18)
1. an animation producing method, is characterized in that, the method comprises:
Obtain the picture array that comprises plurality of pictures;
For described picture array, select a target area, other regions outside described target area are background area;
For carrying out staticize processing in the background area of the every pictures in described picture array; And
According to the picture array completing after staticize is processed, generate animation.
2. animation producing method as claimed in claim 1, is characterized in that, also comprises: from described picture array, choose a background picture;
Described staticize is processed and is comprised: the background area that the background area of other pictures except described background picture in described picture array is replaced with to described background picture.
3. animation producing method as claimed in claim 1 or 2, is characterized in that, described staticize is processed and also comprised:
For adding translucent mask layer in the background area of the every pictures in described picture array.
4. animation producing method as claimed in claim 1, is characterized in that, obtains the picture array that comprises plurality of pictures and comprises:
According to user's input, from one section of video, intercept a video segment; And
According to predetermined frame per second, from described video segment, intercept plurality of pictures to obtain described picture array.
5. animation producing method as claimed in claim 1, is characterized in that, obtains the picture array that comprises plurality of pictures and comprises:
According to user's input, choose plurality of pictures and form described picture array.
6. animation producing method as claimed in claim 1, is characterized in that, according to the picture array generation animation completing after staticize is processed, comprises:
Setting completes broadcasting speed and the playing sequence of the plurality of pictures comprising in the picture array after staticize is processed.
7. animation producing method as claimed in claim 1, is characterized in that, also comprises:
The picture array completing after staticize is processed is carried out to filter processing.
8. animation producing method as claimed in claim 1, is characterized in that, also comprises:
By generated animated transition, it is GIF form.
9. animation producing method as claimed in claim 8, is characterized in that, by generated animated transition, is that GIF form comprises:
Add up the rgb value of each pixel in described animation, the access times of every kind of rgb value are sorted;
Obtain the rgb value of the given category number coming above, generate palette; And
The rgb value of each pixel in described animation is updated to rgb value corresponding in described palette.
10. an animation producing device, is characterized in that, this device comprises:
Acquisition module, for obtaining the picture array that comprises plurality of pictures;
Select module, be used to described picture array to select a target area, other regions outside described target area are background area;
Processing module, is used to the background area of the every pictures in described picture array to carry out staticize processing; And
Generation module, for generating animation according to the picture array completing after staticize is processed.
11. animation producing devices as claimed in claim 10, is characterized in that, described processing module is also for choosing a background picture from described picture array;
Described staticize is processed and is comprised: the background area that the background area of other pictures except described background picture in described picture array is replaced with to described background picture.
12. animation producing devices as described in claim 10 or 11, is characterized in that, described staticize is processed and also comprised:
For adding translucent mask layer in the background area of the every pictures in described picture array.
13. animation producing devices as claimed in claim 10, is characterized in that, described acquisition module intercepts a video segment from one section of video according to user's input; And
According to predetermined frame per second, from described video segment, intercept plurality of pictures to obtain described picture array.
14. animation producing devices as claimed in claim 10, is characterized in that, described acquisition module is chosen plurality of pictures according to user's input and formed described picture array.
15. animation producing devices as claimed in claim 10, is characterized in that, broadcasting speed and the playing sequence of the plurality of pictures that described generation module also comprises for the picture array having arranged after staticize is processed.
16. animation producing devices as claimed in claim 10, is characterized in that, described generation module is also for carrying out filter processing to the picture array completing after staticize is processed.
17. animation producing devices as claimed in claim 10, is characterized in that, described generation module is also for being GIF form by generated animated transition.
18. animation producing devices as claimed in claim 17, is characterized in that, by generated animated transition, are that GIF form comprises:
Add up the rgb value of each pixel in described animation, the access times of every kind of rgb value are sorted;
Obtain the rgb value of the given category number coming above, generate palette; And
The rgb value of each pixel in described animation is updated to rgb value corresponding in described palette.
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