CN104574473B - Method and device for generating dynamic effect on basis of static image - Google Patents

Abstract

The embodiment of the invention provides a method and device for generating a dynamic effect on the basis of a static image. The method includes the steps of selecting a characteristic region in the static image, wherein the characteristic region comprises characteristic points; determining one or more reference points in the characteristic region; mapping pixel points of the static image to one or more frames of twisted pictures according to the characteristic points or the reference points; generating the dynamic effect on the basis of the one or more frames of twisted images. According to the method and the device, calculation is simple, the method and the device do not need to rely on software development kits or library files or tools of a third party, the rendering generation speed is high, the resource consumption is low, and the cross-platform effect can be easily achieved.

Description

A method and device for generating dynamic effects based on static pictures

technical field

The invention relates to the technical field of image processing, in particular to a method for generating dynamic effects based on static pictures and a device for generating dynamic effects based on static pictures.

Background technique

With the development of computer technology, especially the widespread popularization of mobile devices, computer-based applications have widely entered every aspect of people's lives.

Automatically generate animation effects based on pictures, and has many applications in Internet entertainment.

Nowadays, openGL (Open Graphics Library) interface and other development kits or tools are generally used to generate through rendering. On the one hand, this method relies on third-party development kits, library files or tools, and on the other hand, it has special requirements for system configuration and resources. Therefore, , consumes a lot of resources, renders and generates slowly, and is not conducive to cross-platform transplantation.

Contents of the invention

In view of the above problems, the present invention is proposed to provide a method for generating dynamic effects based on static pictures and a corresponding device for generating dynamic effects based on static pictures, which overcome the above problems or at least partially solve the above problems.

According to one aspect of the present invention, a method for generating dynamic effects based on static pictures is provided, including:

Selecting a feature area in a static picture; there are feature points in the feature area;

determining one or more reference points in the characteristic area;

mapping the pixels of the static picture into one or more frames of distorted pictures according to the feature points and the one or more reference points;

A dynamic effect is generated based on the one or more frames of warped pictures.

Optionally, the feature area includes a convex area, and the feature point includes a center of gravity point.

Optionally, the step of mapping the pixels of the static picture to one or more frames of warped pictures according to the feature points and the one or more reference points includes:

generate distorted images;

mapping the pixel points on the first connection line in the feature region to the second connection line;

copying the pixels on the second connection to the same position in the warped picture;

Wherein, the first connection line is the connection line between the feature point and the edge point, the second connection line is the connection line between the current reference point and the edge point, and the edge point is the line on the edge of the feature area. coordinate point.

Optionally, the step of mapping the pixels on the first connecting line in the feature region to the second connecting line includes:

Calculating the relative position of the pixel on the first connecting line in the feature region on the first connecting line;

According to the relative position, copy the pixel point to the second connection line.

Optionally, the step of mapping the pixels of the static picture to one or more frames of warped pictures according to the feature points and the one or more reference points further includes:

Pixels outside the feature region are mapped to the same location in the warped image.

Optionally, the step of mapping the pixels of the static picture to one or more frames of warped pictures according to the feature points and the one or more reference points further includes:

Perform pixel superposition processing on overlapping pixels in the distorted image.

Optionally, the step of mapping the pixels of the static picture to one or more frames of warped pictures according to the feature points and the one or more reference points further includes:

Perform pixel interpolation on empty positions in the distorted image.

Optionally, the step of generating a dynamic effect based on the one or more frames of distorted pictures includes:

A dynamic picture is generated by using the static picture and the one or more frames of warped pictures.

Optionally, the step of generating a dynamic effect based on the one or more frames of distorted pictures includes:

generating dynamic information based on the feature area;

Writing the dynamic information and script objects into the static picture to generate a dynamic interaction file.

Optionally, the step of generating dynamic information based on the feature region includes:

Dynamic information is generated using the feature region, the feature point and the one or more reference points.

According to another aspect of the present invention, a device for generating dynamic effects based on static pictures is provided, including:

The selection module is suitable for selecting a feature area in a static picture; there are feature points in the feature area;

a determination module adapted to determine one or more reference points in said characteristic area;

A mapping module, adapted to map pixels of the static picture into one or more frames of warped pictures according to the feature points and the one or more reference points;

A generating module, adapted to generate dynamic effects based on the one or more frames of distorted pictures.

Optionally, the feature area includes a convex area, and the feature point includes a center of gravity point.

Optionally, the mapping module is also suitable for:

generate distorted images;

mapping the pixel points on the first connection line in the feature region to the second connection line;

copying the pixels on the second connection to the same position in the warped image;

Wherein, the first connection line is the connection line between the feature point and the edge point, the second connection line is the connection line between the current reference point and the edge point, and the edge point is the line on the edge of the feature area. coordinate point.

Optionally, the mapping module is also suitable for:

Calculating the relative position of the pixel on the first connecting line in the feature region on the first connecting line;

According to the relative position, copy the pixel point to the second connection line.

Optionally, the mapping module is also suitable for:

Pixels outside the feature region are mapped to the same location in the warped image.

Optionally, the mapping module is also suitable for:

Perform pixel superposition processing on overlapping pixels in the distorted image.

Optionally, the mapping module is also suitable for:

Perform pixel interpolation on empty positions in the distorted image.

Optionally, the generating module is also suitable for:

A dynamic picture is generated by using the static picture and the one or more frames of warped pictures.

Optionally, the generating module is also suitable for:

generating dynamic information based on the feature area;

Writing the dynamic information and script objects into the static picture to generate a dynamic interaction file.

Optionally, the generating module is also suitable for:

Dynamic information is generated using the feature region, the feature point and the one or more reference points.

In the embodiment of the present invention, one or more reference points are determined in the feature area of the static picture to map the pixels of the static picture to one or more frames of distorted pictures to generate dynamic effects, the calculation is simple, and there is no need to rely on third-party development Packages, library files or tools, rendering and generation are fast, consume less resources, and are easy to cross-platform.

The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable , the specific embodiments of the present invention are enumerated below.

Description of drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiment. The drawings are only for the purpose of illustrating a preferred embodiment and are not to be considered as limiting the invention. Also throughout the drawings, the same reference numerals are used to designate the same parts. In the attached picture:

Fig. 1 shows a flow chart of the steps of a method embodiment of generating a dynamic effect based on a static picture according to an embodiment of the present invention;

Fig. 2 shows an example diagram of a static picture according to an embodiment of the present invention;

Fig. 3 shows an example diagram of selecting a feature region in a static picture according to an embodiment of the present invention;

FIG. 4 shows an example map of a pixel mapping according to an embodiment of the present invention;

5A and 5B show an example diagram of a distorted image according to an embodiment of the present invention; and

Fig. 6 shows a structural block diagram of an embodiment of an apparatus for generating a dynamic effect based on a static picture according to an embodiment of the present invention.

detailed description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

Referring to FIG. 1 , it shows a flow chart of the steps of a method embodiment of generating a dynamic effect based on a static picture according to an embodiment of the present invention, which may specifically include the following steps:

Step 101, selecting a feature region in a static image;

It should be noted that the embodiments of the present invention can be applied to mobile devices, such as mobile phones, PDAs (Personal Digital Assistants, personal digital assistants), laptop computers, palmtop computers, etc., and can also be applied to fixed devices, such as, A personal computer (Personal Computer, PC), a notebook computer, etc. are not limited in this embodiment of the present invention.

These mobile devices or fixed devices can generally support operating systems including Android (Android), IOS, WindowsPhone or windows, etc., and can usually store static pictures.

Static pictures may be relative to dynamic pictures, that is, pictures without dynamic effects.

The static picture may include formats such as JPG, JPEG, PNG, BMP, etc., which is not limited in this embodiment of the present invention.

In the embodiment of the present invention, a certain area in the static picture can be selected as the feature area, and the feature area can be in the shape of polygon, circle, ellipse, etc., and dynamic effects are generated for the image data in the feature area.

For example, for a static picture as shown in Figure 2, an elliptical selection box as shown in Figure 3 can be provided, and the user can change the shape of the elliptical selection box and select its position for the static picture, which can be identified as the characteristic region.

Wherein, there may be feature points in the feature area for generating dynamic effects.

In an optional example of the embodiment of the present invention, the feature area may include a convex area, and the feature point may include a center of gravity point.

Convex area, from a geometric point of view, can refer to a place where the figure is convex outwards and not concave.

Algebraically, a convex area can be defined as follows: any two points a and b in the set, t*a+(1-t)*b still belong to this set, where 0<t<1, the meaning of this expression can be to connect The straight line segment of two points a b is still in the set.

The geometric center of gravity, also known as the geometric center, when the object is homogeneous (the density is a constant value), the mass center is equal to the centroid, such as the intersection of the three midlines of a triangle.

Step 102, determining one or more reference points in the feature area;

In a specific implementation, one or more reference points may be determined according to the specified interactive operation event when the specified interactive operation event is monitored.

The interactive operation event may be an event caused by a user performing an interactive operation.

Through the triggering of the interactive operation event, the feature area can be shaken similar to a physical water polo (approximately filled with water balloons), and its shaking direction and mode are changed according to different user interaction operations, such as shaking of a mobile phone. Orientation, where the screen is tapped, etc.

In one situation, the specified interactive operation event may include a shaking event, and then one or more reference points may be selected in the characteristic area of the static picture according to the shaking direction of the shaking event.

In this case, the user can interact by shaking.

Specifically, events of an acceleration sensor (such as a three-axis acceleration sensor) may be monitored from a sensor event interface of an operating system (such as Android).

After receiving the change event of the acceleration sensor, obtain the acceleration of the device in the three directions of horizontal, vertical and spatial vertical respectively, calculate the sum of the squares of the acceleration in each direction, and obtain its square root as the comprehensive acceleration of the movement of the device.

If the integrated acceleration is greater than the set acceleration threshold, it can be judged that a shaking event is detected, and the user's shaking operation is determined to be interacted with.

In the shaking direction, it can be the same as the shaking direction or opposite to the shaking direction, and one or more continuously distributed reference points are selected in the feature area of the static picture.

In another situation, the specified interactive operation event may include a screen click event, and one or more reference points are selected in the characteristic area of the static picture according to the direction of the screen click event.

In this case, the user can perform interactive operations by clicking on the screen (such as a feature area).

If the screen click event is monitored, it can point to the direction of the screen click event. For example, the center point/center of gravity point of the feature area points to the direction of the screen click event, which can be the same as the direction or opposite to the direction. In static Select one or more continuously distributed reference points in the feature area of the image.

Of course, the method of determining the above reference point is only an example. When implementing the embodiment of the present invention, other methods of determining the reference point can be set according to the actual situation, for example, directly specify the position of the reference point, which is not limited in the embodiment of the present invention . In addition, in addition to the above manner of determining the reference point, those skilled in the art may also adopt other manners of determining the reference point according to actual needs, which is not limited in this embodiment of the present invention.

Step 103, mapping the pixels of the static picture into one or more frames of distorted pictures according to the feature points and the one or more reference points;

In the embodiment of the present invention, the static picture may be mapped to generate the warped picture with the feature point as the reference and the reference point as the reference point of the warped magnitude.

The pixel points in the feature area in the static picture can be mapped along the direction of the feature point pointing to the reference point, resulting in distortion of the still picture. The larger the reference point deviates from the feature point, the larger the distortion can be. When the reference point deviates from the feature point, the smaller the distortion can be. In particular, when the feature point coincides with the reference point, there may be no distortion in the image. distortion.

In an optional embodiment of the present invention, step 103 may include the following substeps:

Sub-step S11, generating a distorted image;

In the embodiment of the present invention, the initial state of the warped picture may be blank.

Sub-step S12, mapping the pixels on the first connection line in the feature region to the second connection line;

Wherein, the first connection line may be the connection line between the feature point and the edge point, the second connection line may be the connection line between the current reference point and the edge point, and the edge point may be the feature point Coordinate points on the edge of the region.

In the embodiment of the present invention, the pixel points in the feature region may be mapped according to the reference point.

It should be noted that if the feature area is a convex area and the reference point is a pixel in the feature area, then the mapped pixel can be located in the feature area, so that the pixels in the feature area can be mapped in the feature area without will be mapped outside the feature region.

For example, as shown in Figure 4, C0 is a feature point (such as a center point), C1 can be a reference point, and E can be an edge point, then C0E can be the first connection line, and C1E can be the second connection line. In the embodiment of the present invention , the pixel point P0 on the first connection line C0E can be mapped to the second connection line C1E to obtain the mapped point P1.

In an optional example of the embodiment of the present invention, substep S12 may include the following substeps:

Sub-step S121, calculating the relative position of the pixel on the first connecting line in the feature region on the first connecting line;

Sub-step S122, copying the pixel point to the second connection line according to the relative position.

In practical applications, the relative positions of pixels can be expressed in a proportional relationship.

For example, in one example, as shown in FIG. 4 , the ratio of the line segment C0P0 to the line segment C0E, as the ratio R, can be used as the relative position of the pixel point P0 on the first connection line C0E. According to the ratio R, the point P1 on the line segment C1E is obtained, so that the ratio of the line segment C1P1 to the second connecting line C1E is R.

Certainly, in the embodiment of the present invention, the ratio between other line segments including pixel points and the first connection line may also be used to express the relative position, which is not limited in the embodiment of the present invention.

Sub-step S13, copying the pixel points on the second connection line to the same position in the warped picture;

If the position of the pixel on the second connection line is determined, it can be copied to the same position in the warped picture to perform warped mapping of the image.

In an optional embodiment of the present invention, step 103 may also include the following substeps:

In sub-step S14, the pixels outside the feature area are mapped to the same position in the warped picture.

In the embodiment of the present invention, if the pixel on the static picture is outside the convex feature area, it can be directly copied to the corresponding same position on the distorted picture without distortion.

Of course, the embodiment of the present invention may not map the pixels outside the feature area, but only perform mapping based on the pixels in the feature area, which is not limited in the embodiment of the present invention.

In an optional embodiment of the present invention, step 103 may also include the following substeps:

Sub-step S15, performing pixel point superposition processing on the overlapping pixels in the distorted image.

In the embodiment of the present invention, since the still image is distorted by mapping, the positions of the pixels may overlap in areas where the pixels of the distorted image are more concentrated.

For the situation where the positions of pixels overlap, the embodiment of the present invention can perform pixel superposition processing.

For example, if the RGB color mode is applied, various colors can be obtained by changing the three color channels of red (R), green (G), and blue (B) of pixels and superimposing them with each other. of.

Of course, in order to further reduce the amount of calculation, a pixel point can also be selected from the superimposed pixels (such as randomly selecting a pixel point, selecting the last pixel point copied to this position) as the pixel point at this position, and other methods can also be used to select The pixel at this position is not limited in this embodiment of the present invention.

In an optional embodiment of the present invention, step 103 may also include the following substeps:

Sub-step S16, perform pixel point interpolation processing on the blank positions in the distorted picture.

In the embodiment of the present invention, due to the distortion caused by the mapping of the static image, in the area where the pixels in the distorted image are relatively sparse, some pixels may not be assigned a value (that is, no pixel is mapped to this position, and the pixel at this position point is in its original state, such as white), resulting in a blank position situation.

For the blank position in the distorted picture, the embodiment of the present invention may perform pixel interpolation processing to complement the distorted picture.

For example, for a pixel Px that has not been assigned a value, select the nearest assigned pixel Py (such as the upper pixel, the lower pixel, the left pixel, the right pixel, etc.), and the pixel The value of the point Py is assigned to the pixel point Px.

In practical applications, when the reference point (C1 as shown in Figure 4) moves to a certain position, a distorted picture can be mapped out according to the position of the reference point (C1 as shown in Figure 4). When the point (C1 shown in FIG. 4) moves to different positions, the distorted picture also changes, and the distorted picture can be played continuously, thereby forming an animation effect.

As shown in Figure 5A, if the reference point (C1 as shown in Figure 4) is on the left side of the feature point (C0 as shown in Figure 4), the entire feature image can be distorted to the left; as shown in Figure 5B, If the reference point is on the right side of the feature point (C0 as shown in FIG. 4 ), the entire feature image can be distorted to the right.

Furthermore, if the position of the reference point is determined according to the specified interactive operation event, then the reference point can start from the position of the feature point and move along the direction corresponding to the specified interactive operation event (such as the shaking direction of the shaking event, pointing to the location where the screen click event occurs). Direction) is distributed on both sides of the feature point, and finally coincides with the feature point, then the distorted image mapped by the feature area can be twisted back and forth along the direction corresponding to the specified interaction event, resulting in a shaking effect, and finally stops.

For example, as shown in Figure 4, the reference point C1 oscillates along the X-axis passing through the center of gravity point C0. Every time the reference point C1 moves to a position, a distorted picture will be generated, and the distorted picture will be played frame by frame. The image in the characteristic area shown in FIG. 5A and FIG. 5B exhibits a dynamic effect of vibrating left and right.

Step 104, generating a dynamic effect based on the one or more frames of distorted pictures.

It should be noted that the dynamic effect may be generated currently or driven later, which is not limited in this embodiment of the present invention.

In an optional embodiment of the present invention, step 104 may include the following substeps:

Sub-step S21, using the static picture and the one or more frames of warped pictures to generate a dynamic picture.

In the embodiment of the present invention, one frame of static picture can be saved, and one or more frames of distorted pictures including the feature area can be saved to generate dynamic pictures, such as GIF.

Compared with the traditional GIF, since the storage of image data other than the distorted picture is reduced, the size of the dynamic picture can be reduced.

In an optional embodiment of the present invention, step 104 may include the following substeps:

Sub-step S31, generating dynamic information based on the feature area;

The dynamic information can be configuration information for mapping the feature area of a static picture to one or more frames of distorted images, such as XML (Extensible Markup Language, Extensible Markup Language), json (Javascript ObjectNotation, data exchange language) and the like.

An example of configuration information designed in json can be as follows:

In an optional example of the embodiment of the present invention, substep S31 may include the following substeps:

Sub-step S311, using the feature area, the feature point and the one or more reference points to generate dynamic information.

In the embodiment of the present invention, dynamic information may be generated from the feature area, the feature point and one or more reference points, so as to support the generation of dynamic effects based on the reference points.

Sub-step S32, writing the dynamic information and the script object into the static image to generate a dynamic interaction file.

In the embodiment of the present invention, dynamic information and script objects (such as JS scripts) can be written into static pictures, and can be transmitted to the network or to other users, and can also be stored.

After the script object is read, the script object can be used to map the static picture according to the dynamic information, so as to generate a dynamic effect that changes frame by frame.

In the embodiment of the present invention, one or more reference points are determined in the feature area of the static picture to map the pixels of the static picture to one or more frames of distorted pictures to generate dynamic effects, the calculation is simple, and there is no need to rely on third-party development Packages, library files or tools, rendering and generation are fast, consume less resources, and are easy to cross-platform.

For the method embodiment, for the sake of simple description, it is expressed as a series of action combinations, but those skilled in the art should know that the embodiment of the present invention is not limited by the described action order, because according to the embodiment of the present invention , certain steps may be performed in other order or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

Referring to FIG. 6 , it shows a structural block diagram of an embodiment of a device for generating dynamic effects based on static pictures according to an embodiment of the present invention, which may specifically include the following modules:

The selection module 601 is adapted to select a feature area in a static picture; there are feature points in the feature area;

A determination module 602, adapted to determine one or more reference points in the characteristic area;

A mapping module 603, adapted to map pixels of the static picture into one or more frames of warped pictures according to the feature points and the one or more reference points;

The generation module 604 is adapted to generate a dynamic effect based on the one or more frames of distorted pictures.

In an optional example of the embodiment of the present invention, the feature area may include a convex area, and the feature point may include a center of gravity point.

In an optional embodiment of the present invention, the mapping module 604 may also be adapted to:

generate distorted images;

mapping the pixel points on the first connection line in the feature region to the second connection line;

copying the pixels on the second connection to the same position in the warped picture;

Wherein, the first connection line is the connection line between the feature point and the edge point, the second connection line is the connection line between the current reference point and the edge point, and the edge point is the line on the edge of the feature area. coordinate point.

In an optional embodiment of the present invention, the mapping module 604 may also be adapted to:

Calculating the relative position of the pixel on the first connecting line in the feature region on the first connecting line;

According to the relative position, copy the pixel point to the second connection line.

In an optional embodiment of the present invention, the mapping module 604 may also be adapted to:

Pixels outside the feature region are mapped to the same location in the warped image.

In an optional embodiment of the present invention, the mapping module 604 may also be adapted to:

Perform pixel superposition processing on overlapping pixels in the distorted image.

In an optional embodiment of the present invention, the mapping module 604 may also be adapted to:

Perform pixel interpolation on empty positions in the distorted image.

In an optional embodiment of the present invention, the generating module 605 may also be adapted to:

A dynamic picture is generated by using the static picture and the one or more frames of warped pictures.

In an optional embodiment of the present invention, the generating module 605 may also be adapted to:

generating dynamic information based on the feature area;

Writing the dynamic information and script objects into the static picture to generate a dynamic interaction file.

In an optional embodiment of the present invention, the generating module 605 may also be adapted to:

Dynamic information is generated using the feature region, the feature point and the one or more reference points.

As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for related parts, please refer to the part of the description of the method embodiment.

The algorithms and displays presented herein are not inherently related to any particular computer, virtual system, or other device. Various generic systems can also be used with the teachings based on this. The structure required to construct such a system is apparent from the above description. Furthermore, the present invention is not specific to any particular programming language. It should be understood that various programming languages can be used to implement the content of the present invention described herein, and the above description of specific languages is for disclosing the best mode of the present invention.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure the understanding of this description.

Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, in order to streamline this disclosure and to facilitate an understanding of one or more of the various inventive aspects, various features of the invention are sometimes grouped together in a single embodiment, figure, or its description. This method of disclosure, however, is not to be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the Detailed Description are hereby expressly incorporated into this Detailed Description, with each claim standing on its own as a separate embodiment of this invention.

Those skilled in the art can understand that the modules in the device in the embodiment can be adaptively changed and arranged in one or more devices different from the embodiment. Modules or units or components in the embodiments may be combined into one module or unit or component, and furthermore may be divided into a plurality of sub-modules or sub-units or sub-assemblies. All features disclosed in this specification (including accompanying claims, abstract and drawings) and any method or method so disclosed may be used in any combination, except that at least some of such features and/or processes or units are mutually exclusive. All processes or units of equipment are combined. Each feature disclosed in this specification (including accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

Furthermore, those skilled in the art will understand that although some embodiments described herein include some features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of the invention. and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.

The various component embodiments of the present invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art should understand that a microprocessor or a digital signal processor (DSP) can be used in practice to implement some or all of some or all of the components in the device for generating dynamic effects based on static pictures according to embodiments of the present invention Function. The present invention can also be implemented as an apparatus or an apparatus program (for example, a computer program and a computer program product) for performing a part or all of the methods described herein. Such a program for realizing the present invention may be stored on a computer-readable medium, or may be in the form of one or more signals. Such a signal may be downloaded from an Internet site, or provided on a carrier signal, or provided in any other form.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means can be embodied by one and the same item of hardware. The use of the words first, second, and third, etc. does not indicate any order. These words can be interpreted as names.

Claims (18)

1. it is a kind of based on static images generate dynamic effect method, including：

The selected characteristic region in static images；There is in the characteristic area characteristic point；

One or more reference points are determined in the characteristic area；

The pixel of the static images is mapped to by a frame or many according to the characteristic point and one or more of reference points In frame distortion picture；

Dynamic effect is generated based on a frame or multiframe distortion picture；

It is described that the pixel of the static images is mapped to by a frame according to the characteristic point and one or more of reference points Or the step in multiframe distortion picture includes：

Generate distortion picture；

Pixel on the first line in the characteristic area is mapped on the second line；

Copy the pixel on second line to same position in the distortion picture；

Wherein, first line is the line between the characteristic point and marginal point, and second line is current reference point With the line of marginal point, the marginal point is the coordinate points on the characteristic area edge.

2. the method for claim 1, it is characterised in that the characteristic area includes convex domain, and the characteristic point includes Focus point.

3. the method for claim 1, it is characterised in that the pixel by the first line in the characteristic area The step that point is mapped on the second line includes：

Calculate the pixel in the characteristic area on the first line, the relative position on the first line；

According to the relative position, the pixel is copied on the second line.

4. the method for claim 1, it is characterised in that described according to the characteristic point and one or more of references Step during the pixel of the static images is mapped to a frame or multiframe distortion picture by point also includes：

Pixel outside the characteristic area is mapped to the same position in the distortion picture.

5. the method for claim 1, it is characterised in that described according to the characteristic point and one or more of references Step during the pixel of the static images is mapped to a frame or multiframe distortion picture by point also includes：

Pixel to distorting location overlap in picture carries out pixel overlap-add procedure.

6. the method for claim 1, it is characterised in that described according to the characteristic point and one or more of references Step during the pixel of the static images is mapped to a frame or multiframe distortion picture by point also includes：

Pixel interpolation processing is carried out to distorting the blank position in picture.

7. the method as described in any one of claim 1-6, it is characterised in that described based on a frame or multiframe distortion picture The step of generating dynamic effect includes：

Dynamic picture is generated using the static images and a frame or multiframe distortion picture.

8. the method as described in any one of claim 1-6, it is characterised in that described based on a frame or multiframe distortion picture The step of generating dynamic effect includes：

Multidate information is generated based on the characteristic area；

The multidate information and scripting object are write in the static images, to generate dynamic interaction file.

9. method as claimed in claim 8, it is characterised in that described the step of generate multidate information based on the characteristic area Including：

Multidate information is generated using the characteristic area, the characteristic point and one or more of reference points.

10. it is a kind of based on static images generate dynamic effect device, including：

Module is chosen, the selected characteristic region in static images is suitable to；There is in the characteristic area characteristic point；

Determining module, is suitable to one or more reference points are determined in the characteristic area；

Mapping block, is suitable to reflect the pixel of the static images according to the characteristic point and one or more of reference points It is mapped in a frame or multiframe distortion picture；

Generation module, is suitable to generate dynamic effect based on a frame or multiframe distortion picture；

The mapping block is further adapted for：

Generate distortion picture；

Pixel on the first line in the characteristic area is mapped on the second line；

Copy the pixel on second line to same position in the distortion picture；

Wherein, first line is the line between the characteristic point and marginal point, and second line is current reference point With the line of marginal point, the marginal point is the coordinate points on the characteristic area edge.

11. devices as claimed in claim 10, it is characterised in that the characteristic area includes convex domain, the characteristic point bag Include focus point.

12. devices as claimed in claim 10, it is characterised in that the mapping block is further adapted for：

Calculate the pixel in the characteristic area on the first line, the relative position on the first line；

According to the relative position, the pixel is copied on the second line.

13. devices as claimed in claim 10, it is characterised in that the mapping block is further adapted for：

Pixel outside the characteristic area is mapped to the same position in the distortion picture.

14. devices as claimed in claim 10, it is characterised in that the mapping block is further adapted for：

Pixel to distorting location overlap in picture carries out pixel overlap-add procedure.

15. devices as claimed in claim 10, it is characterised in that the mapping block is further adapted for：

Pixel interpolation processing is carried out to distorting the blank position in picture.

16. devices as described in any one of claim 10-15, it is characterised in that the generation module is further adapted for：

Dynamic picture is generated using the static images and a frame or multiframe distortion picture.

17. devices as described in any one of claim 10-15, it is characterised in that the generation module is further adapted for：

Multidate information is generated based on the characteristic area；

The multidate information and scripting object are write in the static images, to generate dynamic interaction file.

18. devices as claimed in claim 17, it is characterised in that the generation module is further adapted for：

Multidate information is generated using the characteristic area, the characteristic point and one or more of reference points.