CN116091659A - Method, device, equipment and medium for simulating image fragmentation caused by stress - Google Patents
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- 238000013467 fragmentation Methods 0.000 title claims abstract description 103
- 238000006062 fragmentation reaction Methods 0.000 title claims abstract description 103
- 238000000034 method Methods 0.000 title claims abstract description 38
- 239000012634 fragment Substances 0.000 claims abstract description 145
- 230000009471 action Effects 0.000 claims abstract description 73
- 230000000694 effects Effects 0.000 claims abstract description 30
- 239000013598 vector Substances 0.000 claims abstract description 25
- 230000033001 locomotion Effects 0.000 claims description 32
- 230000001133 acceleration Effects 0.000 claims description 27
- 238000009792 diffusion process Methods 0.000 claims description 21
- 238000003860 storage Methods 0.000 claims description 15
- 238000004364 calculation method Methods 0.000 claims description 6
- 230000006870 function Effects 0.000 claims description 6
- 238000004422 calculation algorithm Methods 0.000 claims description 4
- 230000001939 inductive effect Effects 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 3
- 238000004590 computer program Methods 0.000 claims 1
- 239000011159 matrix material Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000009466 transformation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
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- 230000003287 optical effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Abstract
The invention relates to the field of image processing and video special effects, and discloses a method, a device, equipment and a medium for simulating image fragmentation caused by stress. According to the method, the fragmentation coordinates of the preset image are obtained, the image is subjected to polygon fragmentation processing, so that a plurality of fragments and the center coordinates of the fragments are obtained, two different-direction offset actions are introduced into each fragment, offset vectors of the fragments in unit time are obtained, a rotation action is introduced into each fragment, a fragmentation special effect is obtained, and the stereoscopic impression and the authenticity of image fragmentation are improved.
Description
Technical Field
The invention relates to the field of image processing and video special effects, in particular to a method, a device, equipment and a medium for simulating image fragmentation caused by stress.
Background
Auxiliary special effects in the video production process are common nowadays, and in order to make the video effect more cool, special effect auxiliary technologies are more various, and polishing and optimization are more needed.
At present, the effects are used in the directions of pictures and videos, some of the effects are simply and barely effective, and the sense is not real.
Disclosure of Invention
The invention mainly aims to provide a method, a device, equipment and a medium for solving the problem that the simulation stress causes image fragmentation.
The first aspect of the invention provides a method of simulating stress-induced image fragmentation, comprising:
obtaining fragmentation coordinates of a preset image;
performing polygon reduction processing on the image to obtain a plurality of fragments and center coordinates of the fragments;
introducing two offset actions in different directions into each fragment to obtain an offset vector of the fragment in unit time;
and introducing a rotation action into each fragment to obtain a fragmentation special effect.
Wherein said inducing a rotational action in each of said fragments comprises:
a third coordinate axis is additionally arranged on the center coordinate of each fragment;
one rotation motion of a horizontal axis rotation motion, a vertical axis rotation motion and a third coordinate axis rotation motion is randomly introduced into each of the fragments.
Optionally, in a second implementation manner of the first aspect of the present invention, the fragmentation coordinate is a center coordinate of the image, and the performing polygon fragmentation processing on the image to obtain a plurality of fragments and the center coordinate of the fragments includes:
square fragmentation processing is carried out on the image to obtain a plurality of fragments;
calculating the number of fragments of the image under the transverse and longitudinal axes according to a preset number calculation algorithm and the side length of the fragments;
and traversing each fragment based on the fragment number to obtain the center coordinate of each fragment.
Optionally, in a third implementation manner of the first aspect of the present invention, the equation for calculating the number of fragments is:
The equation for calculating the center coordinates of each of the fragments is:
Optionally, in a fourth implementation manner of the first aspect of the present invention, the introducing, in each of the fragments, two offset actions in different directions includes:
introducing a gravitational acceleration shifting action in each of said fragments;
and introducing a diffusion acceleration shift action into each fragment, wherein the diffusion direction of the diffusion shift action is a direction away from the fragmentation coordinate.
Optionally, in a fifth implementation manner of the first aspect of the present invention, the calculation equation of the offset vector is:
Optionally, in a sixth implementation manner of the first aspect of the present invention, after one rotation action of the horizontal axis rotation action, the vertical axis rotation action, and the third coordinate axis rotation action is randomly introduced into each of the fragments, the method further includes:
acquiring a preset random value in each fragment;
and calculating the random value, the deflection angle value of the horizontal axis rotation action, the deflection angle value of the vertical axis rotation action and the deflection angle value of the third coordinate axis rotation action respectively to obtain the random deflection angle value of each rotation action.
In a second aspect, the invention provides an apparatus for simulating stress induced image fragmentation, comprising:
the fragmentation position module is used for acquiring fragmentation coordinates of a preset image;
the fragmentation module is used for carrying out polygon fragmentation on the image to obtain a plurality of fragments and center coordinates of the fragments;
the offset module is used for respectively introducing offset actions in two different directions into each fragment to obtain offset vectors of the fragments in unit time;
and the rotating module is used for introducing a rotating action into each fragment to obtain a fragmentation special effect.
A third aspect of the invention provides an apparatus for simulating stress induced image fragmentation, comprising: a memory and at least one processor, the memory having instructions stored therein, the memory and the at least one processor being interconnected by a line; the at least one processor invokes the instructions in the memory to cause the apparatus for simulating stress induced image fragmentation to perform the method for simulating stress induced image fragmentation described above.
A fourth aspect of the invention provides a computer readable storage medium having instructions stored therein which, when run on a computer, cause the computer to perform the above-described method of simulating stress causing image fragmentation.
In the embodiment of the invention, the image is fragmented, and a plurality of actions are added in fragments to simulate the motion trail of the true fragments which burst and fall, so that the stereoscopic impression and the reality are improved, and the special effect of simulating the image fragmentation caused by stress is realized.
Drawings
FIG. 1 is a schematic representation of a first embodiment of a method for simulating stress causing image fragmentation in accordance with embodiments of the present invention;
FIG. 2 is a schematic diagram of a second embodiment of a method for simulating stress causing image fragmentation in accordance with embodiments of the present invention;
FIG. 3 is a schematic diagram of a fourth embodiment of a method for simulating stress causing image fragmentation in accordance with embodiments of the present invention;
FIG. 4 is a schematic diagram of a sixth embodiment of a method for simulating stress causing image fragmentation in accordance with embodiments of the present invention;
FIG. 5 is a schematic representation of one embodiment of an apparatus for simulating stress causing image fragmentation in accordance with embodiments of the present invention;
FIG. 6 is a schematic representation of one embodiment of an apparatus for simulating stress causing image fragmentation in accordance with embodiments of the present invention;
FIG. 7 is an original image of an embodiment of the present invention;
FIG. 8 is a graph showing the effect of applying a method for simulating stress-induced image fragmentation in an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a method, a device, equipment and a medium for simulating image fragmentation caused by stress.
The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.
For ease of understanding, a detailed flow of an embodiment of the present invention is described below with reference to fig. 1-4, and one embodiment of a method for simulating stress-induced image fragmentation in an embodiment of the present invention includes:
101. obtaining fragmentation coordinates of a preset image;
in this embodiment, the image includes, but is not limited to, a still picture, a dynamic video, etc., and the present embodiment is applied to the dynamic video, where the still picture is included in the dynamic video, so that the image needs to be subjected to the processing of the special effect of breaking, that is, the location of the breaking point, that is, the breaking center, is required to be determined, and for convenience of explanation, in this embodiment, the location of the breaking point is used to be placed at the very center of the image.
102. Performing polygon reduction processing on the image to obtain a plurality of fragments and center coordinates of the fragments;
in this embodiment, the effect of the fragmentation is actually formed by splicing a plurality of fragments with irregular shapes, so that the images need to be subjected to polygon fragmentation in advance, wherein a fragmentation processing mode with uniform shapes can be adopted in the polygon fragmentation processing, and a fragmentation mode with random shapes can also be adopted, and if the fragmentation mode with random shapes is adopted, the state that a real plane is physically fragmented is considered, that is, the state extends outwards from a fragmentation point, the fragments which are closer to the position of the fragmentation point are found to be finer, the mode can enable the special effect to be more real, but the complexity is improved by several orders of magnitude, so that the fragmentation effect which is relatively more real is realized under the condition of limited resource utilization by adopting the former in this embodiment.
Further, in step 102, the method may specifically further include:
1021. square fragmentation processing is carried out on the image to obtain a plurality of fragments;
1022. calculating the number of fragments of the image on the transverse axis and the longitudinal axis according to a preset number calculation algorithm and the side length of the fragments;
1023. traversing each fragment based on the number of fragments to obtain the center coordinates of each fragment.
In steps 1021-1023, the calculation equation for the number of fragments is:
the equation for calculating the center coordinates of each of the fragments is:
The central coordinate value corresponding to each fragment can be obtained from the equation, so that any pixel is taken from the image
With the center coordinates of the fragments as the origin, one can calculate:
103. Introducing two offset actions in different directions into each fragment to obtain an offset vector of the fragment in unit time;
in this embodiment, in order to achieve the animation effect of fragmentation, each fragment needs to be introduced into the action separately, and the action of each fragment is independent.
Further, in step 103, the method may specifically further include:
1031. introducing a gravitational acceleration shifting action in each of the fragments;
1032. a diffusion acceleration shift action is introduced into each fragment, wherein the diffusion direction of the diffusion shift action is toward a direction away from the fragmentation coordinates.
In step 1031-1032, in order to simulate the fracture situation, there is a gravitational acceleration in the real space, so that a first deviation motion is introduced into the fracture, namely a gravitational acceleration deviation motion, to improve the sense of reality, and meanwhile, as the fracture situation is seen from the real angle, the center point of the fracture is exploded, that is, the fragments around the fracture point scatter outwards around the fracture point as the center of the circle, so that a diffusion acceleration deviation motion is introduced into the fracture, and under the holding of the two deviation motions, a parabolic motion far away from the fracture point is formed, so as to achieve the effect of approaching the real fracture.
The calculation equation of the offset action is:
Wherein the vector of the diffusion acceleration shift motion
Is calculated as follows:
104. and introducing a rotation action into each fragment to obtain a fragmentation special effect.
Wherein said inducing a rotational action in each fragment comprises:
a third coordinate axis is additionally arranged on the center coordinate of each fragment;
one of a horizontal axis rotation motion, a vertical axis rotation motion, and a third coordinate axis rotation motion is randomly introduced into each of the fragments.
In this embodiment, because the real fragments interfere with external elements such as air resistance in the falling process, the real fragments cannot well keep a state of falling, but can self-turn or self-rotate unpredictably, and if only a single parabolic offset action is performed, the three-dimensional effect and the sense of reality are lacking.
Further, the step 104 may specifically further be performed:
1041. acquiring a preset random value in each fragment;
1042. and calculating the random value with the deflection angle value of the horizontal axis rotation action, the deflection angle value of the vertical axis rotation action and the deflection angle value of the third coordinate axis rotation action respectively to obtain the random deflection angle value of each rotation action.
In steps 1041-1042, since the coordinates of the fragment are only two-dimensional coordinates, if the fragment rotates on the two axes, the fragment also rotates on a regular plane, and the third coordinate axis extends on the two axes, so that the fragment can rotate on three axes, and the specific matrix equation is as follows:
at an x-axis rotation angle
Is a matrix of (a):
at a rotation angle of y-axis
Is a matrix of (a):
at a third axis (z axis) rotation angle
Is a matrix of (a):
of course, if all fragments are to be rotated in the same direction, there is a sense of discomfort, and therefore, it is necessary to calculate the random value seed preset in each fragment:
taking the decimal of the calculated random value seed:
Here, it is necessary to relate the angle of the rotation action to time, so that the rotation of the rotation angle has a certain randomness:
By the three matrix-by-matrix combined transformation, the total rotation matrix can be obtained:
the position coordinates calculated relative to the center of the fragment are obtained
,/>
) Since only two-dimensional coordinates are used, coordinates of more than one third axis, i.e. (. A +.)>
,/>
,/>
) Here, it is assumed that the original image pixel coordinates before transformation are
Substituting the coordinates into the total rotation matrix:
is available in the form of
Substituting it into the other two:
In the embodiment, the image is fragmented, and a plurality of actions are added in fragments to simulate the movement track of the true fragments which burst and fall, so that the stereoscopic impression and the reality are improved, and the effect of simulating the image fragmentation caused by stress is realized.
While the method for simulating stress to cause image fragmentation in the embodiment of the present invention is described above, the following describes a device for simulating stress to cause image fragmentation in the embodiment of the present invention, referring to fig. 5, one embodiment of the device for simulating stress to cause image fragmentation in the embodiment of the present invention includes:
a fragmentation position module 201, configured to obtain fragmentation coordinates of a preset image;
the fragmentation module 202 is configured to perform polygon fragmentation on the image to obtain a plurality of fragments and center coordinates of the fragments;
the offset module 203 is configured to introduce offset actions in two different directions into each of the fragments, so as to obtain an offset vector of the fragment in unit time;
and the rotation module 204 is used for introducing rotation action into each fragment to obtain a fragmentation special effect.
In the embodiment, the image is fragmented, and a plurality of actions are added in fragments to simulate the movement track of the true fragments which burst and fall, so that the stereoscopic impression and the reality are improved, and the effect of simulating the image fragmentation caused by stress is realized.
Another embodiment of an apparatus for simulating stress causing image fragmentation in an embodiment of the present invention includes:
a fragmentation position module 201, configured to obtain fragmentation coordinates of a preset image;
the fragmentation module 202 is configured to perform polygon fragmentation on the image to obtain a plurality of fragments and center coordinates of the fragments;
the offset module 203 is configured to introduce offset actions in two different directions into each fragment, so as to obtain an offset vector of the fragment in unit time;
the rotation module 204 is used for introducing rotation action into each fragment to obtain a fragmentation special effect.
Wherein the fragmentation coordinate is the center coordinate of the image.
Further, the reducing module 202 may further specifically perform:
square fragmentation processing is carried out on the image to obtain a plurality of fragments;
calculating the number of fragments of the image on the transverse axis and the longitudinal axis according to a preset number calculation algorithm and the side length of the fragments;
traversing each fragment based on the number of fragments to obtain the center coordinates of each fragment.
Wherein, the calculation equation of the fragment number is:
the equation for calculating the center coordinates of each of the fragments is:
Further, the offset module 203 may further specifically perform:
introducing a gravitational acceleration shifting action in each of the fragments;
introducing a diffusion acceleration shift action into each fragment, wherein the diffusion direction of the diffusion shift action is a direction away from the fragmentation coordinate;
the calculation equation of the offset vector is as follows:
Further, the rotation module 204 may further specifically perform:
a third coordinate axis is additionally arranged on the center coordinate of each fragment;
randomly introducing one rotation motion of a transverse axis rotation motion, a longitudinal axis rotation motion and a third coordinate axis rotation motion into each fragment;
acquiring a preset random value in each fragment;
and calculating the random value with the deflection angle value of the horizontal axis rotation action, the deflection angle value of the vertical axis rotation action and the deflection angle value of the third coordinate axis rotation action respectively to obtain the random deflection angle value of each rotation action.
In the embodiment, the image is fragmented, and a plurality of actions are added in fragments to simulate the movement track of the true fragments which burst and fall, so that the stereoscopic impression and the reality are improved, and the effect of simulating the image fragmentation caused by stress is realized.
The device for simulating stress to cause image fragmentation in the embodiment of the present invention is described in detail above in terms of the modularized functional entity in fig. 5, and the device for simulating stress to cause image fragmentation in the embodiment of the present invention is described in detail below in terms of hardware processing.
Fig. 6 is a schematic structural diagram of an apparatus for simulating stress-induced image fragmentation, where the apparatus 300 for simulating stress-induced image fragmentation may have a relatively large difference due to different configurations or performances, and may include one or more processors central processing units, a CPU310, for example, one or more processors and a memory 320, and one or more storage media 330, for example, one or more mass storage devices, for storing applications 333 or data 332, according to an embodiment of the present invention. Wherein memory 320 and storage medium 330 may be transitory or persistent storage. The program stored on the storage medium 330 may include one or more block diagrams, not shown, each of which may include a series of instruction operations in the apparatus 300 for inducing image fragmentation by an analog stress. Still further, the processor 310 may be configured to communicate with the storage medium 330 to execute a series of instructional operations in the storage medium 330 on the device 300 simulating a stress induced image fragmentation.
The device 300 based on simulating stress causing image fragmentation may also include one or more power supplies 340, one or more wired or wireless network interfaces 350, one or more input output interfaces 330, and/or one or more operating systems 331, such as Windows Serve, mac OS X, unix, linux, freeBSD, and the like. It will be appreciated by those skilled in the art that the device configuration shown in fig. 6 that simulates a force causing image fragmentation does not constitute a limitation of devices that simulate a force causing image fragmentation, and may include more or fewer components than illustrated, or may combine certain components, or a different arrangement of components.
The present invention also provides a computer readable storage medium, which may be a non-volatile computer readable storage medium, and which may also be a volatile computer readable storage medium, having stored therein instructions that, when executed on a computer, cause the computer to perform the steps of the method of image fragmentation based on simulated stress.
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the system or apparatus and unit described above may refer to the corresponding process in the foregoing method embodiment, which is not repeated herein.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions for enabling a computer device to be a personal computer, a server, or a network device, etc. to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory, a ROM, a random access memory random access memory, a RAM, a magnetic disk, or an optical disk, etc., which can store program codes.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A method of simulating stress induced image fragmentation comprising:
obtaining fragmentation coordinates of a preset image;
performing polygon reduction processing on the image to obtain a plurality of fragments and center coordinates of the fragments;
introducing two offset actions in different directions into each fragment to obtain an offset vector of the fragment in unit time;
introducing a rotation action into each fragment to obtain a fragmentation special effect;
wherein said inducing a rotational action in each of said fragments comprises:
a third coordinate axis is additionally arranged on the center coordinate of each fragment;
one rotation motion of a horizontal axis rotation motion, a vertical axis rotation motion and a third coordinate axis rotation motion is randomly introduced into each of the fragments.
2. The method of simulating a force induced image fragmentation according to claim 1, wherein the fragmentation coordinates are center coordinates of the image, wherein the subjecting the image to polygon fragmentation to obtain a plurality of fragments and the center coordinates of the fragments comprises:
square fragmentation processing is carried out on the image to obtain a plurality of fragments;
calculating the number of fragments of the image under the transverse and longitudinal axes according to a preset number calculation algorithm and the side length of the fragments;
and traversing each fragment based on the fragment number to obtain the center coordinate of each fragment.
3. The method of simulating a force induced image fragmentation according to claim 2, wherein the equation for calculating the number of fragments is:
the equation for calculating the center coordinates of each of the fragments is:
4. The method of simulating a force induced image fragmentation according to claim 1, wherein said introducing two different directional offset actions into each of said fragments comprises:
introducing a gravitational acceleration shifting action in each of said fragments;
and introducing a diffusion acceleration shift action into each fragment, wherein the diffusion direction of the diffusion shift action is a direction away from the fragmentation coordinate.
5. The method of modeling stress induced image fragmentation according to claim 4, wherein the calculation equation for the offset vector is:
6. The method of simulating a force induced image fragmentation according to claim 1, further comprising, after said randomly introducing one of a horizontal axis rotation motion, a vertical axis rotation motion, and a third coordinate axis rotation motion in each of said fragments:
acquiring a preset random value in each fragment;
and calculating the random value, the deflection angle value of the horizontal axis rotation action, the deflection angle value of the vertical axis rotation action and the deflection angle value of the third coordinate axis rotation action respectively to obtain the random deflection angle value of each rotation action.
7. An apparatus for simulating stress induced image fragmentation, the apparatus comprising:
the fragmentation position module is used for acquiring fragmentation coordinates of a preset image;
the fragmentation module is used for carrying out polygon fragmentation on the image to obtain a plurality of fragments and center coordinates of the fragments;
the offset module is used for respectively introducing offset actions in two different directions into each fragment to obtain offset vectors of the fragments in unit time;
and the rotating module is used for introducing a rotating action into each fragment to obtain a fragmentation special effect.
8. An apparatus for simulating a force causing image fragmentation, the apparatus for simulating a force causing image fragmentation comprising: a memory and at least one processor, the memory having instructions stored therein, the memory and the at least one processor being interconnected by a line;
the at least one processor invoking the instructions in the memory to cause the apparatus to perform the method of simulating stress induced image fragmentation of any of claims 1-6.
9. A computer readable storage medium having stored thereon a computer program, which when executed by a processor implements the method of simulating a stress induced image fragmentation according to any of claims 1-6.
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Application publication date: 20230509 |