Breakthrough in 4D Reconstruction Technology
LongVolcap, a 4DGS reconstruction engine for Diffuman4D, employs a time-domain continuous Gaussian radiation field representation. Unlike the voxelized treatment of static NeRF, the technique enables dynamic surface modeling through differentiable Gaussian splash, which is especially optimized for high-frequency details such as clothing folds and hair flutter. Its key innovation is the introduction of:
- Time domain consistency constraint module to eliminate inter-frame flicker
- Material reflectance separation algorithm for improved light adaptation
- Adaptive Gaussian kernel density control to balance computational efficiency and accuracy
In the test, for complex materials such as silk, the system was able to capture dynamic fold changes at the 0.5mm level, increasing the rendering speed by 160 times and reducing memory usage by 90% compared to traditional dynamic NeRF methods.
This answer comes from the articleDiffuman4D: Generating High-Fidelity 4D Human Body Views from Sparse VideoThe
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