Publications

Year: Author:

Max Lyon, Marcel Campen, David Bommes, Leif Kobbelt
SIGGRAPH 2019

The generation of quad meshes based on surface parametrization techniques has proven to be a versatile approach. These techniques quantize an initial seamless parametrization so as to obtain an integer grid map implying a pure quad mesh. State-of-the-art methods following this approach have to assume that the surface to be meshed either has no boundary, or has a boundary which the resulting mesh is supposed to be aligned to. In a variety of applications this is not desirable and non-boundary-aligned meshes or grid-parametrizations are preferred. We thus present a technique to robustly generate integer grid maps which are either boundary-aligned, non-boundary-aligned, or partially boundary-aligned, just as required by different applications. We thereby generalize previous work to this broader setting. This enables the reliable generation of trimmed quad meshes with partial elements along the boundary, preferable in various scenarios, from tiled texturing over design and modeling to fabrication and architecture, due to fewer constraints and hence higher overall mesh quality and other benefits in terms of aesthetics and flexibility.





Javor Kalojanov, Isaak Lim, Niloy Mitra, Leif Kobbelt
Computer Graphics Forum (Proc. EUROGRAPHICS 2019)

We propose a novel method to synthesize geometric models from a given class of context-aware structured shapes such as buildings and other man-made objects. Our central idea is to leverage powerful machine learning methods from the area of natural language processing for this task. To this end, we propose a technique that maps shapes to strings and vice versa, through an intermediate shape graph representation. We then convert procedurally generated shape repositories into text databases that in turn can be used to train a variational autoencoder which enables higher level shape manipulation and synthesis like, e.g., interpolation and sampling via its continuous latent space.

» Show BibTeX

@article{Kalojanov2019,
journal = {Computer Graphics Forum},
title = {{String-Based Synthesis of Structured Shapes}},
author = {Javor Kalojanov and Isaak Lim and Niloy Mitra and Leif Kobbelt},
pages = {027-036},
volume= {38},
number= {2},
year = {2019},
note = {\URL{https://diglib.eg.org/bitstream/handle/10.1111/cgf13616/v38i2pp027-036.pdf}},
DOI = {10.1111/cgf.13616},
}






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