Abstract
Recent advances in implicit neural representations have made them a popular choice for modeling
3D geometry. However,
directly editing these representations presents challenges due to the complex relationship
between model weights and surface
geometry, as well as the slow optimization required to update neural fields. Among various
editing tools, sculpting stands out as
a valuable operation for the graphics and modeling community. While traditional mesh-based tools
like ZBrush enable intuitive
edits, a comparable high-performance toolkit for sculpting neural SDFs is currently lacking. We
introduce a framework that
enables interactive surface sculpting directly on neural implicit representations with optimized
performance. Unlike previous
methods, which are limited to spot edits, our approach allows users to perform stroke-based
modifications on the fly, ensuring
intuitive shape manipulation without switching representations. By employing tubular
neighborhoods to sample strokes and
customizable brush profiles, we achieve smooth deformations along user-defined curves, providing
intuitive control over the
sculpting process. Our method demonstrates that versatile edits can be achieved while preserving
the smooth nature of implicit
representations, all without compromising interactive performance.
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