We have created an approach for real time animation of deformable objects. An optimization of software algorithms exploiting compactly supported radial basis functions (CSRBF) allows us to generate deformations performed fast enough to be used in such real time applications as computer games. Our software allows to produce smooth local deformations of animation objects using space mapping technique by defining only a moderate number of control vectors. Radius of support as a main parameter used by the user allows defining locality of deformations.
Note: All movie files here are avi encoded with DivX 4.12 codec. To view them in Windows Media Player you need to install the codec firstly. It is avialable to download for free from the DivX site: http://www.divx.com/. Versions 4.x and 5.x can be used, not version 3.x. If you open the movie in Windows Media Player and you don't see anything that means you don't have DivX codec installed.
To test our animation software system we used a polygonal model of the fish, defined by 975 vertices and 1119 polygons. 92 control points were used for deformation of a mouth, tail and fin. Selected radius of support is 0.3. Memory needed to store matrix for computation was 6320 bytes. The rendering speed for this animation in our software system on the Athlon 1Ghz computer, 650MB RAM, ATI Radeon 250Mhz 8500LE 64MB video board VIA KT133 Chipset, Windows 2000 SP2 VTK 4.0 was 632 frames/second with hardware acceleration on video board and 82 frames/second without hardware acceleration.
You can download some of the movie examples:
- Fish movement interpolated using quaternions: 4 source points, sphere (928 KiB)
- Fish movement interpolated using quaternions: 4 source points, sphere. Interpolation curve is visible. (934 KiB)
- Fish movement interpolated using quaternions: 8 source points, loop (1.1 MiB)
- Fish movement interpolated using quaternions: 8 source points, loop. Interpolation curve is visible. (1.1 MiB)
- Fish stays at one place(73 KiB)
- Fish movement on a complex trajectory is interpolated using quaternions (3.4 MiB)
- Fish movement on a another complex trajectory is interpolated using quaternions (2 MiB)
Note: All movie files here are avi encoded with DivX 4.12 codec. To view them in Windows Media Player you need to install the codec firstly. It is avialable to download for free from the DivX site: http://www.divx.com/. Versions 4.x and 5.x can be used, not version 3.x. If you open the movie in Windows Media Player and you don't see anything that means you don't have DivX codec installed.
An example of face simulation. Animation model is defined by 6158 vertices, 7024 polygons, and 32 vectors define the deformation. Selected radius of support тАУ 0.2. The rendering speed for this animation on Athlon 1Ghz, 650MB RAM, ATI Radeon 250Mhz 8500LE 64MB video board VIA KT133 Chipset, Windows 2000 SP2, VTK 4.0 is 107 frames/second.
You can download some of the movie examples:
- joy 1, 100 KiB, joy 2, 100 KiB,
- kiss 1, 100 KiB, kiss 2, 100 KiB,
- sorrow 1, 100 KiB, sorrow 2, 100 KiB and
- emotions 1, 475 KiB, emotions 2, 475 KiB.
You can also download the source model in *.vtk file format (688 KiB) and transformation file *.ptt (2.4 KiB) - joy, transformation file *.ptt (2.0 KiB) - sorrow, transformation file *.ptt (1.4 KiB) - kiss.
Note: All movie files here are avi encoded with DivX 4.12 codec. To view them in Windows Media Player you need to install the codec firstly. It is avialable to download for free from the DivX site: http://www.divx.com/. Versions 4.x and 5.x can be used, not version 3.x. If you open the movie in Windows Media Player and you don't see anything that means you don't have DivX codec installed.
This example is a classic example of Bouncing Ball model, but we made the box where ball is bouncing is deformed using CSRBF. One vector is used to define the transformation for each collision direction and spline is recalculated for every step to provide true dynamics. C1 continous Wendland function is used. The rendering speed for this animation on Athlon 1Ghz, 650MB RAM, ATI Radeon 250Mhz 8500LE 64MB video board VIA KT133 Chipset, Windows 2000 SP2, VTK 4.0 is 72 frames/second.
You can download some of the movie examples:
Note: All movie files here are avi encoded with DivX 4.12 codec. To view them in Windows Media Player you need to install the codec firstly. It is avialable to download for free from the DivX site: http://www.divx.com/. Versions 4.x and 5.x can be used, not version 3.x. If you open the movie in Windows Media Player and you don't see anything that means you don't have DivX codec installed.
This example is an elastic box model, deformed
by the 6 vectors (based on physics law, sin(t)). C1 continous Wendland function is used. The rendering speed for this animation on Athlon 1Ghz, 650MB RAM, ATI Radeon 250Mhz 8500LE 64MB video board VIA KT133 Chipset, Windows 2000 SP2, VTK 4.0 is 72 frames/second. You can download some of the movie examples:
Note: All movie files here are avi encoded with DivX 4.12 codec. To view them in Windows Media Player you need to install the codec firstly. It is avialable to download for free from the DivX site: http://www.divx.com/. Versions 4.x and 5.x can be used, not version 3.x. If you open the movie in Windows Media Player and you don't see anything that means you don't have DivX codec installed.
The "Venus" model (Cyberware Inc.) 67180 vertices, 134356 polygons.
A deformation based on 16 points is applied in 3D to create the effects of winking and smiling.
A real-time rendering speed for this animation was achieved on our test configuration : 21 frames/sec.
You can download some of the movie examples:
vtkPicker: is the interactive software used to view 3d models in *.vtk file format, edit, select areas, points and vectors (use Ctrl-Shift-Left mouse button click to select cell and point) and create transformations.
Animation composer: interactive program for recording simple animations using our technology.