WO2021258544A1

WO2021258544A1 - Animation blend space partitioning method and apparatus, and device and readable medium

Info

Publication number: WO2021258544A1
Application number: PCT/CN2020/112542
Authority: WO
Inventors: 张迎凯; 何文峰
Original assignee: 完美世界(北京)软件科技发展有限公司
Priority date: 2020-06-22
Filing date: 2020-08-31
Publication date: 2021-12-30
Also published as: CN113129415A; CN111798547A; CN113129416A; CN111798547B

Abstract

An animation blend space partitioning method and apparatus, and a device and a readable medium. The method comprises: obtaining an animation set, the animation set comprising multiple sample skeletal animations to be subjected to animation blending (101); performing motion analysis on a target object in each sample skeletal animation to obtain multiple types of motion parameters corresponding to the target object in each sample skeletal animation (102); constructing an animation blend space by using the multiple types of the motion parameters as dimensions (103); and determining first reference points corresponding to the motion parameters in the animation blend space, and partitioning the animation blend space on the basis of the first reference points (104). By means of the present method, motion analysis is performed on the target object in each sample skeletal animation; the motion parameters obtained by motion analysis are more accurate; and the animation quality of the skeletal animation obtained by animation blending processing on the basis of the motion parameters is high.

Description

Animation mixing space segmentation method, device, equipment and readable medium

This application claims the priority of a Chinese patent application filed on June 22, 2020 with the application number 202010575600.6 and the title of the invention "animation blending space segmentation method, device, equipment and readable medium", the entire content of which is incorporated by reference In this application.

Technical field

The present invention relates to the technical field of data processing, and in particular to a method, device, equipment and readable medium for dividing an animation mixing space.

Background technique

The corresponding skeletal animation played in the game according to the user's control operation is obtained through mixing in some applications. The key to the animation mixing process is how to correctly calculate the required animation and weight information according to the user's needs. According to the calculated required animation and weight information, the animation mixing process can be specifically performed.

When designing a game, an animator can make several representative sample skeleton animations. After obtaining the sample skeletal animation, game designers rely on personal experience and repeated trials to set the corresponding motion parameters for the target object in each sample skeletal animation. Then based on these motion parameters, an animation mixing space is constructed. During the execution of the game, when the user performs a control operation on the target object, the sample skeletal animation can be mixed through the animation mixing space to mix the skeletal animation corresponding to the control operation.

In the above process, since the motion parameters corresponding to the sample skeletal animation are manually specified by the game designer based on personal experience, the set motion parameters do not match the actual motion parameters of the sample skeletal animation. The animation quality of the mixed skeletal animation is directly related to the motion parameters set by the game designer. When the motion parameters set by the game designer do not match the actual motion parameters of the sample skeletal animation, the animation quality of the mixed skeletal animation is lower . In addition, humans cannot interfere with the mixing process during the animation mixing process. The construction of the high-dimensional mixed space is realized by simply combining several low-dimensional mixed spaces together. The high-dimensional mixed space obtained by simple combination cannot realize the coupling of the mixed space.

Summary of the invention

The embodiment of the present invention provides a method, device, equipment and storage medium for dividing an animation mixing space, which are used to improve the animation quality of the mixed skeletal animation.

In a first aspect, an embodiment of the present invention provides a method for dividing an animation blending space, the method including:

Acquiring an animation collection, the animation collection including a plurality of sample skeletal animations;

Performing motion analysis on the target object in each sample skeletal animation to obtain multiple types of motion parameters corresponding to the target object in each sample skeletal animation;

Constructing an animation mixing space with multiple types of motion parameters as dimensions;

Determining a first reference point corresponding to the motion parameter in the animation mixing space, and dividing the animation mixing space based on the first reference point;

Based on the split animation mixing space, the animation mixing process is performed.

In a second aspect, an embodiment of the present invention provides an animation mixing space segmentation device, including:

An obtaining module, configured to obtain an animation set, the animation set contains a plurality of sample skeletal animations to be animated;

The motion analysis module is configured to perform motion analysis on the target object in each sample skeletal animation to obtain multiple types of motion parameters corresponding to the target object in each sample skeletal animation;

A construction module, configured to construct an animation mixing space with multiple types of motion parameters as dimensions;

The segmentation module is configured to determine a first reference point corresponding to the motion parameter in the animation mixing space, and segment the animation mixing space based on the first reference point.

In a third aspect, an embodiment of the present invention provides an electronic device including a processor and a memory. The memory stores at least one instruction, at least one program, code set or instruction set, the at least one instruction, at least one program, The code set or instruction set is loaded and executed by the processor to realize the animation mixing space division method in the first aspect.

In a fourth aspect, an embodiment of the present invention provides a computer-readable medium on which at least one instruction, at least one program, code set or instruction set is stored, the at least one instruction, at least one program, code set or instruction set It is loaded and executed by the processor to realize the animation mixing space division method in the first aspect.

Through the method provided by the embodiment of the present invention, before performing the animation blending process on the sample skeletal animation, the motion analysis of the target object in each sample skeletal animation can be performed, and in this way, the corresponding target object in each sample skeletal animation can be obtained. Different types of motion parameters. The motion parameters automatically calculated through the motion analysis can fit the actual motion parameters of the sample skeleton animation, so the motion parameters obtained through the motion analysis are more accurate. When the calculated motion parameters are more able to fit the actual motion parameters of the sample skeletal animation, the animation quality of the skeletal animation obtained by the animation blending process based on such motion parameters is higher. It solves the problem of inaccurate motion parameters that require game designers to manually input motion parameters of animations based on personal experience when making animation mixing spaces. By adopting the present invention, the motion parameters can be automatically calculated through motion analysis, and the calculated motion parameters can fit the actual motion parameters of the sample skeletal animation, and the animation quality of the skeletal animation obtained by the animation mixing process can be improved.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

FIG. 1 is a schematic diagram of a flowchart of a method for dividing an animation mixed space provided by an embodiment of the present invention;

2 is a schematic diagram of a result of using triangles to divide a two-dimensional space according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a segmentation result provided by an embodiment of the present invention;

FIG. 4 is a schematic diagram of an interpolation principle provided by an embodiment of the present invention;

FIG. 5 is a schematic diagram of the effect of a conversion rule geometry provided by an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of an animation mixing space segmentation device provided by an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of an electronic device provided by an embodiment of the present invention.

detailed description

In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms of "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, "multiple" Generally contains at least two types.

Depending on the context, the words "if" and "if" as used herein can be interpreted as "when" or "when" or "in response to determination" or "in response to detection". Similarly, depending on the context, the phrase "if determined" or "if detected (statement or event)" can be interpreted as "when determined" or "in response to determination" or "when detected (statement or event) )" or "in response to detection (statement or event)".

In addition, the sequence of steps in the following method embodiments is only an example, and is not strictly limited.

FIG. 1 is a flowchart of a method for dividing an animation blend space provided by an embodiment of the present invention. As shown in FIG. 1, the method includes the following steps:

101. Obtain an animation collection, where the animation collection includes a plurality of sample skeletal animations to be animation blended.

102. Perform motion analysis on the target object in each sample skeletal animation to obtain multiple types of motion parameters corresponding to the target object in each sample skeletal animation.

103. Construct an animation mixing space with multiple types of motion parameters as dimensions.

104. Determine a first reference point corresponding to the motion parameter in the animation mixing space, and divide the animation mixing space based on the first reference point.

The aforementioned sample skeletal animation may be an animation drawn by an animator, and multiple sample skeletal animations related to the content can be stored in an animation collection.

Subsequent animation mixing processing can be performed based on the sample skeleton animation, and the animation mixing processing is a more critical technology. Animation blending refers to a technique that can make more than one sample skeleton animation work on the final pose of the character. For the animation mixing process, the key is how to correctly calculate the required animation and weight information according to the user's needs. According to the calculated required animation and weight information, the animation mixing process can be specifically performed.

After the animation set is obtained, the motion analysis of the target object in each sample skeletal animation can be performed to obtain multiple types of motion parameters corresponding to the target object in each sample skeletal animation.

The aforementioned target object may be an object manipulated by the user as a player in the game, for example, it may be a game character.

Optionally, the process of performing motion analysis on the target object in each sample skeletal animation to obtain multiple types of motion parameters corresponding to the target object in each sample skeletal animation can be implemented as follows: during the playback of each sample skeletal animation, Sample each sample skeletal animation to obtain sampling information; according to the sampling information, calculate multiple types of motion parameters corresponding to the target object in each sample skeletal animation in each sample skeletal animation.

In practical applications, each sample skeletal animation can be played offline, and then during the process of playing the sample skeletal animation, each sample skeletal animation is sampled. Subsequently, at least any one of the motion (root) trajectory of the target object in each sample skeletal animation and the joint angles contained in the target object can be calculated. Finally, based on at least any one of the motion trajectory and the joint angle, multiple types of motion parameters corresponding to the target object in each sample skeletal animation can be determined. It should be noted that in actual applications, during the process of playing the sample skeletal animation, motion analysis can be performed on each sample skeletal animation to analyze some other available types of motion parameters in addition to the motion trajectory and the joint angle. The different types of motion parameters that can be analyzed through the sample skeleton animation and the manner in which these parameters are used to construct the animation mixing space fall within the protection scope of the present invention.

Through the above calculation, the corresponding motion parameters of the target object in each sample skeleton animation can be obtained. The types of motion parameters include:

Movement speed (Move-speed), the unit is m/s;

Angular speed (Turn-speed), the unit is rad/s;

Slope of the ground (Slope-Angle), the unit is rad;

Direction (Strafe), the unit is rad.

Of course, in addition to the types of motion parameters listed above, other types of motion parameters can also be introduced in practical applications according to requirements, which are not limited in the embodiment of the present invention.

In the embodiment of the present invention, the movement speed, the angular velocity, and the ground slope can be calculated by the root motion of the animation (a method of motion analysis). Strafe can be calculated by the angle between the neck joint and the trajectory direction.

The motion parameters calculated through motion analysis are more accurate and can better represent the inherent motion characteristics of the sample skeleton animation.

After obtaining different types of motion parameters, game designers can select the types of motion parameters that need to be used among different types of motion parameters according to their needs, and use the selected types of motion parameters as dimensions to construct an animation blending space (Blend Space). ).

For example, if a game designer chooses to use Move-speed, Turn-speed, and Strafe three types of motion parameters to construct an animation hybrid space, then a three-dimensional space can be constructed, and the three dimensions of the three-dimensional space correspond to Move-speed. , Turn-speed and Strafe.

After constructing the animation mixing space, the animation mixing space can be divided.

The animation mixing space can be divided by automatic division, or the animation mixing space can be divided by manual division, and the animation mixing space can be divided by combining automatic and manual division. .

In the process of dividing the animation mixing space by automatic division, the first reference point corresponding to the motion parameter in the animation mixing space can be determined first. Assuming that the animation mixing space is composed of three dimensions: Move-speed, Turn-speed, and Strafe, the corresponding motion parameters of the target object in the sample skeletal animation V are: Move-speed=5m/s, Turn-speed=10rad/s, Strafe=6rad. The first reference point corresponding to Move-speed=5m/s, Turn-speed=10rad/s, Strafe=6rad can be determined in the animation mixing space. Since the animation collection includes multiple sample skeletal animations, in the same way, the first reference point corresponding to each sample skeletal animation in the animation mixing space can be obtained. After obtaining multiple first reference points, the animation mixing space can be automatically divided based on these reference points.

The number of selected types of motion parameters determines the dimensionality of the animation mixing space. If two types of motion parameters are selected, a two-dimensional space is formed, and if three types of motion parameters are selected, a three-dimensional space is formed. Different dimensionality of the animation mixing space is divided into different ways.

Optionally, when the animation mixing space is a two-dimensional space, based on the first reference point, the process of dividing the animation mixing space can be implemented as follows: using the first reference point as the vertex of the geometric surface to divide the animation mixing space There are multiple preset types of geometric surfaces, and the preset types of geometric surfaces include triangles or planar convex quadrilaterals.

In practical applications, when the preset type of geometric surface is a triangle, the process of dividing the animation mixing space into multiple preset types of geometric surfaces using the first reference point as the vertex of the geometric surface can be implemented as follows: The reference point is used as the vertex of the geometric surface, and the animation mixing space is divided into multiple triangles through Delaunay Triangulation (Delaunay Triangulation) subdivision technology. As shown in Figure 2, it is a schematic diagram of the result of using triangles to divide the two-dimensional space.

Optionally, when the animation mixing space is a three-dimensional space, based on the first reference point, the process of dividing the animation mixing space can be implemented as follows: taking the first reference point as the vertex of the geometric body, and dividing the animation mixing space into multiple A preset type of geometry, the preset type of geometry includes a tetrahedron or a convex hull. As shown in FIG. 3, it is a schematic diagram of the result of dividing a two-dimensional space with a preset geometric plane, and a schematic diagram of the result of dividing a three-dimensional space with a preset geometric body.

After the animation mixing space is split by automatic splitting, if the game designer is not satisfied with the splitting result, he can also make appropriate modifications and supplements. Game designers can modify the results of the auto-segmentation, or add some second reference points on the basis of the first reference point. After the second reference point is added, based on the first reference point and the second reference point, the animation mixing space can be re-split or the split result can be adjusted.

It is understandable that each reference point in the animation mixing space corresponds to a skeletal animation. The sample skeletal animation corresponding to the first reference point comes from the animation collection drawn by the animator, and the skeletal animation corresponding to the second reference point needs to be based on The sample skeleton animation is generated. Optionally, the process of generating the skeletal animation corresponding to the second reference point can be implemented as follows: based on the relative positional relationship between the second reference point and the first reference point, in the first reference point, determine the second reference point that matches the second reference point. Target fiducial point; based on the sample skeletal animation corresponding to the target fiducial point, skeletal animation is generated.

It should be noted that in the process of manually dividing the animation mixing space, you can use more different types of geometric surfaces or geometric bodies to divide the animation mixing space, for example, you can use a plane convex quadrilateral or a convex hull to mix the animation Space is divided. In this way, the splitting process of the animation mixing space is more free, and the final splitting result is more in line with the design needs of game designers.

After the animation mixing space is divided, the divided animation mixing space can be used to perform animation mixing processing. Based on the split animation mixing space, the process of animation mixing processing can be realized as follows: when an animation mixing demand event is detected, the control parameters of the target object input by the user are obtained; based on the control parameters, the animation mixing after the split Construct a blending point in the space; based on the blending point, perform animation blending processing.

Detect the user-triggered control operation on the target object, determine the target motion parameter corresponding to the control operation; among the multiple subspaces contained in the split animation mixing space, determine the target subspace to which the control point corresponding to the target motion parameter belongs. Each subspace includes multiple preset types of geometric surfaces or multiple preset types of geometric bodies; obtains the sample skeleton animation corresponding to the first reference point constituting the target subspace; performs animation blending processing on the obtained sample skeleton animation to obtain The target bone animation corresponding to the control operation.

Optionally, the above-mentioned process of performing animation blending processing based on blending points can be implemented as follows: traversing all the geometry in the split animation blending space to determine the target geometry to which the blending point belongs; calculating the vertices of the target geometry through a geometry interpolation algorithm Information and weight information; based on vertex information and weight information, perform animation blending processing.

For example, in the process of running a game, when a demand for animation mixing processing is generated, for example, the user controls the target object in the game, and specifically performs the operation of forwarding the target object to the right. At this time, it can be based on The control operation determines the corresponding target motion parameter (move, turn). Assuming that the animation mixing space is a two-dimensional space, the control points corresponding to the target motion parameters (move, turn) can be determined in the animation mixing space. The animation mixing space is a divided space, and then each subspace can be traversed to determine the target subspace to which the control point belongs. The vertices of the target subspace are reference points, and each reference point corresponds to a skeletal animation, so the skeletal animation corresponding to the reference points that constitute the target subspace can be obtained. Then, perform animation blending processing on the acquired skeletal animation to obtain the target skeletal animation corresponding to the control operation.

The process of performing animation blending processing on skeletal animation can be realized as follows: performing animation blending processing on skeletal animation through interpolation method. The split animation mixing space is a two-dimensional space, the geometry is a triangle, and the geometry interpolation algorithm is a barycentric coordinate interpolation algorithm; the split animation mixing space is a two-dimensional space, the geometry is a plane convex quadrilateral, and the geometry interpolation algorithm is an inverse double line Linear interpolation algorithm; the split animation mixed space is a three-dimensional space, the geometry is a tetrahedron, and the geometric interpolation algorithm is a barycentric coordinate interpolation algorithm; the split animation mixed space is a three-dimensional space, the geometry is a convex hull, and the geometric interpolation algorithm is a German The algorithm for converting Laune's triangle to a tetrahedron for interpolation. For animation mixing spaces with different dimensions and different geometric surfaces or geometric bodies used in the segmentation process, the interpolation methods used in different situations are different. The interpolation methods used in different situations can be seen in the table below:

Table 1

The principle schematic diagram of barycentric coordinate interpolation and inverse bilinear interpolation when the geometric plane is a triangle, and the barycentric coordinate interpolation when the geometric body is a tetrahedron, and Delaunay's triangulation into a tetrahedron for interpolation can be seen in Figure 4.

Through the interpolation method, the animation blending process of the skeletal animation can be realized as follows: through the interpolation method, the weight information corresponding to each reference point corresponding to the target subspace to which the control point belongs is calculated, and based on the weight information corresponding to each reference point, the bone The animation is processed for animation blending. The weight information reflects the distance relationship between the control point and the corresponding reference point. Specifically, the closer the distance between the control point and the corresponding reference point, the greater the weight. When the distance between the control point and the corresponding reference point is farther, the weight is smaller. By calculating the weight information, the following parameters can be obtained:

[Anim0,weight0], [Anim1,weight1]...[Animi,weighti].

Among them, Animi represents the pose data corresponding to the reference point i in the target subspace. weighti represents the weight information corresponding to the reference point i.

Based on the weight information corresponding to each reference point, the animation blending processing of the skeletal animation can be realized as:

blend motion=Σweighti×Animi.

Among them, blend motion represents the pose data of the target object in the target skeleton animation obtained after the animation mixing process.

It is understandable that the target object in the game can be composed of bones and joints, and the posture of the bones and other factors determine the posture of the target object. When the pose of the bone changes in multiple consecutive video frames, the posture of the target object is different, and the target object is dynamic. Based on this, the above-mentioned Animi may include the pose data of the bones of the target object.

It should be noted that the target skeletal animation may be composed of multiple video frames, and the skeletal animation used for blending into the target skeletal animation is also composed of multiple video frames.

Assuming that the target skeletal animation includes 24 video frames, the skeletal animation used for blending into the target skeletal animation also includes 24 video frames. The n-th video frame in the target skeletal animation can be blended through the n-th video frame in the skeletal animation used for blending into the target skeletal animation.

Now suppose that the first video frame in the target skeletal animation needs to be blended, and the pose data D1 of the bone corresponding to the first video frame in the skeletal animation A1 for blending into the target skeletal animation can be obtained, and used for blending The pose data D2 of the bone corresponding to the first video frame in the skeletal animation A2 of the target skeletal animation, multiply the pose data D1 of the bone by the corresponding weight Q1 plus the pose data D2 of the bone and multiply the corresponding weight The result obtained by Q2 is the pose data D3 of the skeleton corresponding to the first video frame in the target skeleton animation. After calculating the pose data D3 of the skeleton, the pose of the target object in the first video frame of the target skeleton animation is known.

In the same way, the pose data of the bones corresponding to all the video frames in the target skeletal animation can be calculated, and the target skeletal animation can be generated through the pose data of the bones corresponding to all the video frames in the target skeletal animation.

During the running of the game, if convex hulls are used to divide the animation mixing space, or other kinds of irregularly shaped geometric bodies are used to divide the animation mixing space, the process of traversing the target subspace to which the control point belongs is involved. The amount of calculation is extremely high, which is not conducive to the operation of the game. If the configuration of the device running the game is low, it will cause a freeze during the running of the game. At this time, you can consider converting the irregular geometry into a regular geometry, and the amount of calculation to traverse the regular geometry to which the control point belongs will be greatly reduced. Based on this, optionally, among the multiple subspaces contained in the split animation mixing space, the process of determining the target subspace to which the control point corresponding to the target motion parameter belongs can be implemented as follows: Obtain multiple grid spaces corresponding to the subspace; traverse each grid space to determine whether the control point corresponding to the target motion parameter belongs to any one of the multiple grid spaces; if the control point belongs to For any one of the multiple grid spaces, a subspace containing any one of the grid spaces is determined as the target subspace to which the control point belongs.

In practical applications, a subspace with a convex hull shape can be converted into several tetrahedrons, or multiple grid spaces corresponding to the subspace can be directly obtained, and each grid space can be traversed to determine whether the control point corresponding to the target motion parameter belongs to Any grid space among multiple grid spaces, where the grid space can also be referred to as a virtual grid (Virtual Example Grids, abbreviated as VEG). The embodiment of the present invention provides a schematic diagram of the effect of converting an irregular geometric surface into a regular geometric surface in a two-dimensional space, and a schematic diagram of the effect of converting an irregular geometric body in a three-dimensional space into a regular geometric body, as shown in Figure 5. Show.

Since the vertices of VEG do not correspond to storage of real skeletal animation, it is necessary to construct its corresponding virtual hybrid skeletal animation. Specifically, such information can be stored: [Anim0,weight0], [Anim1,weight1]...[Animi,weighti], This information can be calculated by re-sampling the original mesh geometry.

During the running of the game, the grid space is used for weight calculation when the animation is mixed. Because the grid space is neatly arranged, you can quickly calculate which grid space the control point is located in and the vertex corresponding to the grid space. The weight of, and then can achieve the effect of fast mixing animation.

Through the method provided by the embodiment of the present invention, before performing the animation blending process on the sample skeletal animation, the motion analysis of the target object in each sample skeletal animation can be performed, and in this way, the corresponding target object in each sample skeletal animation can be obtained. Different types of motion parameters. The motion parameters automatically calculated through the motion analysis can fit the actual motion parameters of the sample skeleton animation, so the motion parameters obtained through the motion analysis are more accurate. When the calculated motion parameters are more able to fit the actual motion parameters of the sample skeletal animation, the animation quality of the skeletal animation obtained by the animation blending process based on such motion parameters is higher.

The embodiment of the present invention covers the entire process of editing, mixing generation and optimizing the high-dimensional space parameterized character animation mixing scheme. Compared with the existing mixing scheme, the embodiment of the present invention analyzes the animation resources to obtain the corresponding animation mixing space parameters, and additionally provides With the user interactive editing and subdivision function, and can handle the high-dimensional space mixing problem, the user can easily and quickly mix and generate a better animation. The solutions provided by the embodiments of the present invention can be used in technical fields such as games and animation to enhance the motion effect and expressiveness of animated characters.

The animation mixing space division device of one or more embodiments of the present invention will be described in detail below. Those skilled in the art can understand that these animation mixing space segmentation devices can all be configured by using commercially available hardware components through the steps taught in this solution.

FIG. 6 is a schematic structural diagram of an animation mixing space segmentation device provided by an embodiment of the present invention. As shown in FIG. 6, the device includes: an acquisition module 11, a motion analysis module 12, a construction module 13, and a segmentation module 14.

The obtaining module 11 is configured to obtain an animation set, the animation set contains a plurality of sample skeletal animations to be animation blended;

The motion analysis module 12 is configured to perform motion analysis on the target object in each sample skeletal animation to obtain multiple types of motion parameters corresponding to the target object in each sample skeletal animation;

The construction module 13 is configured to construct an animation mixing space with multiple types of motion parameters as dimensions;

The segmentation module 14 is configured to determine a first reference point corresponding to the motion parameter in the animation mixing space, and segment the animation mixing space based on the first reference point.

Optionally, the motion analysis module 12 is set to:

During the playback of each sample skeleton animation, sampling the sample skeleton animation to obtain sampling information;

According to the sampling information, multiple types of motion parameters corresponding to the target object in each sample skeletal animation are calculated.

Optionally, the motion analysis module 12 is set to:

Determine, according to the sampling information, the motion trajectory of the target object in the skeletal animation of each sample and the joint angles included in the target object;

Based on the motion trajectory and the joint angle, multiple types of motion parameters corresponding to the target object in each sample skeletal animation are determined.

Optionally, the device further includes a modification module;

The modification module is configured to modify the split result based on the modification operation on the split result triggered by the user.

Optionally, the modification operation is to add a second reference point in the animation mixing space, and the modification module is set to:

Re-split the animation mixing space based on the first reference point and the second reference point;

Based on the relative positional relationship between the second reference point and the first reference point, in the first reference point, determining a target reference point that matches the second reference point;

Generate a skeletal animation based on the sample skeletal animation corresponding to the target reference point, the skeletal animation corresponding to the second reference point in the animation mixing space.

Optionally, the animation mixing space includes a two-dimensional space or a three-dimensional space.

Optionally, the animation mixing space is a two-dimensional space, and the segmentation module 14 is configured to:

Using the first reference point as a vertex of a geometric surface, the animation mixing space is divided into a plurality of preset types of geometric surfaces, and the preset types of geometric surfaces include triangles or planar convex quadrilaterals.

Optionally, the geometric surface of the preset type is a triangle, and the splitting module 14 is set to:

Using the first reference point as the vertex of the geometric surface, the animation mixing space is divided into a plurality of preset types of geometric surfaces through the Delaunay triangulation technique.

Optionally, the animation mixing space is a three-dimensional space, and the segmentation module 14 is configured to:

Using the first reference point as a vertex of a geometric body, the animation mixing space is divided into a plurality of preset types of geometric bodies, and the preset types of geometric bodies include a tetrahedron or a convex hull.

Optionally, the device further includes a mixing module, and the mixing module is configured to:

Optionally, the mixing module is set to:

When an animation mixing demand event is detected, acquiring the control parameters of the target object input by the user;

Based on the control parameters, construct a mixing point in the split animation mixing space;

Based on the mixing point, an animation mixing process is performed.

Optionally, the mixing module is set to:

Traverse all the geometric bodies in the split animation mixing space, and determine the target geometric body to which the mixing point belongs;

Calculate the vertex information and weight information of the target geometry through a geometric interpolation algorithm;

Based on the vertex information and the weight information, an animation mixing process is performed.

Optionally, the split animation mixing space is a two-dimensional space, the geometry is a triangle, and the geometry interpolation algorithm is a barycentric coordinate interpolation algorithm;

The split animation mixing space is a two-dimensional space, the geometric body is a plane convex quadrilateral, and the geometric body interpolation algorithm is an inverse bilinear interpolation algorithm;

The split animation mixing space is a three-dimensional space, the geometry is a tetrahedron, and the geometry interpolation algorithm is a barycentric coordinate interpolation algorithm;

The split animation mixing space is a three-dimensional space, the geometry is a convex hull, and the geometry interpolation algorithm is an algorithm in which Delaunay's triangle is transformed into a tetrahedron for interpolation.

Optionally, the mixing module is set to:

Detecting a user-triggered control operation on the target object, and determining a target motion parameter corresponding to the control operation;

Determine the target subspace to which the control point corresponding to the target motion parameter belongs among the multiple subspaces included in the split animation mixing space, and the multiple subspaces include multiple preset types of geometric surfaces or multiple presets Type of geometry;

Acquiring a sample skeleton animation corresponding to the first reference point constituting the target subspace;

Perform animation blending processing on the acquired sample skeleton animation to obtain the target skeleton animation corresponding to the control operation.

Optionally, the mixing module is set to:

For each subspace included in the split animation mixing space, acquiring multiple grid spaces corresponding to the subspace;

Traverse each grid space to determine whether the control point corresponding to the target motion parameter belongs to any one of the multiple grid spaces;

If the control point belongs to any grid space in the plurality of grid spaces, a subspace including any grid space is determined as the target subspace to which the control point belongs.

The device shown in FIG. 6 can execute the animation blending space division method provided in the embodiments shown in FIGS. 1 to 5. For detailed execution process and technical effects, please refer to the description in the foregoing embodiment, and will not be repeated here.

According to needs, the systems, methods, and devices of the embodiments of the present invention can be implemented as pure software (for example, software programs written in Java), or as pure hardware (for example, dedicated ASIC chips or FPGA chips) as required. It can also be implemented as a system that combines software and hardware (for example, a firmware system storing fixed codes or a system with general-purpose memory and a processor).

In a possible design, the structure of the animation mixing space segmentation device shown in FIG. 6 may be implemented as an electronic device. As shown in FIG. 7, the electronic device may include a processor 91 and a memory 92. Wherein, executable code is stored on the memory 92, and when the executable code is executed by the processor 91, the processor 91 can at least implement the functions provided in the embodiments shown in FIGS. 1 to 5 above. The animation hybrid space division method.

Optionally, the electronic device may also include a communication interface 93 for communicating with other devices.

Another aspect of the present invention is a computer-readable medium on which computer-readable instructions are stored, and when the instructions are executed, the method of each embodiment of the present invention can be implemented.

The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Without departing from the scope and spirit of the described embodiments, many modifications and changes are obvious to those of ordinary skill in the art. The scope of the claimed subject matter is limited only by the appended claims.

Claims

An animation mixing space segmentation method, which is characterized in that it includes:

Acquiring an animation collection, the animation collection including a plurality of sample skeletal animations to be animation blended;

Performing motion analysis on the target object in each sample skeletal animation to obtain multiple types of motion parameters corresponding to the target object in each sample skeletal animation;

Constructing an animation mixing space with multiple types of motion parameters as dimensions;

The first reference point corresponding to the motion parameter in the animation mixing space is determined, and the animation mixing space is divided based on the first reference point.
The method according to claim 1, wherein the motion analysis is performed on the target object in each sample skeletal animation to obtain multiple types of motion parameters corresponding to the target object in each sample skeletal animation, include:

During the playback of each sample skeleton animation, sampling the sample skeleton animation to obtain sampling information;

According to the sampling information, multiple types of motion parameters corresponding to the target object in each sample skeletal animation are calculated.
The method according to claim 2, wherein the calculating multiple types of motion parameters corresponding to the target object in each sample skeletal animation according to the sampling information comprises:

Determine, according to the sampling information, the motion trajectory of the target object in the skeletal animation of each sample and the joint angles included in the target object;

Based on the motion trajectory and the joint angle, multiple types of motion parameters corresponding to the target object in each sample skeletal animation are determined.
The method according to claim 1, wherein after the animation mixing space is divided based on the first reference point, the method further comprises:

Based on the user-triggered modification operation on the segmentation result, the segmentation result is modified.
The method according to claim 1, wherein the modification operation is to add a second reference point in the animation mixing space, and the modification operation based on a user-triggered split result is performed on the split The results were modified to include:

Re-split the animation mixing space based on the first reference point and the second reference point;

The method also includes:

Based on the relative positional relationship between the second reference point and the first reference point, in the first reference point, determining a target reference point that matches the second reference point;

Generate a skeletal animation based on the sample skeletal animation corresponding to the target reference point, the skeletal animation corresponding to the second reference point in the animation mixing space.
The method according to claim 1, wherein the animation mixing space comprises a two-dimensional space or a three-dimensional space.
The method according to claim 6, wherein the animation mixing space is a two-dimensional space, and the dividing the animation mixing space based on the first reference point comprises:

Using the first reference point as a vertex of a geometric surface, the animation mixing space is divided into a plurality of preset types of geometric surfaces, and the preset types of geometric surfaces include triangles or planar convex quadrilaterals.
8. The method according to claim 7, wherein the preset type of geometric surface is a triangle, and the animation mixing space is divided into a plurality of points by using the first reference point as the vertex of the geometric surface Preset types of geometric faces, including:

Using the first reference point as the vertex of the geometric surface, the animation mixing space is divided into a plurality of preset types of geometric surfaces through the Delaunay triangulation technique.
The method according to claim 6, wherein the animation mixing space is a three-dimensional space, and the dividing the animation mixing space based on the first reference point comprises:

Using the first reference point as a vertex of a geometric body, the animation mixing space is divided into a plurality of preset types of geometric bodies, and the preset types of geometric bodies include a tetrahedron or a convex hull.
The method according to claim 7 or 9, wherein the method further comprises:

Based on the split animation mixing space, the animation mixing process is performed.
The method according to claim 10, wherein the performing animation mixing processing based on the split animation mixing space comprises:

When an animation mixing demand event is detected, acquiring the control parameters of the target object input by the user;

Based on the control parameters, construct a mixing point in the split animation mixing space;

Based on the mixing point, an animation mixing process is performed.
The method according to claim 11, wherein the performing animation mixing processing based on the mixing point comprises:

Traverse all the geometric bodies in the split animation mixing space, and determine the target geometric body to which the mixing point belongs;

Calculate the vertex information and weight information of the target geometry through a geometric interpolation algorithm;

Based on the vertex information and the weight information, an animation mixing process is performed.
The method according to claim 12, wherein the split animation mixing space is a two-dimensional space, the geometry is a triangle, and the geometry interpolation algorithm is a barycentric coordinate interpolation algorithm;

The split animation mixing space is a two-dimensional space, the geometric body is a plane convex quadrilateral, and the geometric body interpolation algorithm is an inverse bilinear interpolation algorithm;

The split animation mixing space is a three-dimensional space, the geometry is a tetrahedron, and the geometry interpolation algorithm is a barycentric coordinate interpolation algorithm;

The split animation mixing space is a three-dimensional space, the geometry is a convex hull, and the geometry interpolation algorithm is an algorithm in which Delaunay's triangle is transformed into a tetrahedron for interpolation.
The method according to claim 10, wherein the performing animation mixing processing based on the split animation mixing space comprises:

Detecting a user-triggered control operation on the target object, and determining a target motion parameter corresponding to the control operation;

Determine the target subspace to which the control point corresponding to the target motion parameter belongs among the multiple subspaces included in the split animation mixing space, and the multiple subspaces include multiple preset types of geometric surfaces or multiple presets Type of geometry;

Acquiring a sample skeleton animation corresponding to the first reference point constituting the target subspace;

Perform animation blending processing on the acquired sample skeleton animation to obtain the target skeleton animation corresponding to the control operation.
The method according to claim 14, wherein the determining the target subspace to which the control point corresponding to the target motion parameter belongs among the multiple subspaces included in the split animation mixing space comprises:

For each subspace included in the split animation mixing space, acquiring multiple grid spaces corresponding to the subspace;

Traverse each grid space to determine whether the control point corresponding to the target motion parameter belongs to any one of the multiple grid spaces;

If the control point belongs to any grid space in the plurality of grid spaces, a subspace including any grid space is determined as the target subspace to which the control point belongs.
An animation mixing space segmentation device, which is characterized in that it comprises:

An obtaining module, configured to obtain an animation set, the animation set contains a plurality of sample skeletal animations to be animated;

The motion analysis module is configured to perform motion analysis on the target object in each sample skeletal animation to obtain multiple types of motion parameters corresponding to the target object in each sample skeletal animation;

A construction module, configured to construct an animation mixing space with multiple types of motion parameters as dimensions;

The segmentation module is configured to determine a first reference point corresponding to the motion parameter in the animation mixing space, and segment the animation mixing space based on the first reference point.
An electronic device, including a processor and a memory, the memory stores at least one instruction, at least one program, code set or instruction set, and the at least one instruction, at least one program, code set or instruction set is processed by the The device is loaded and executed to implement the method according to any one of claims 1-15.
A computer-readable medium on which at least one instruction, at least one program, code set or instruction set is stored, and the at least one instruction, at least one program, code set or instruction set is loaded and executed by a processor to realize The method of any one of 1-15 is required.