Urban modeling facilitates the generation of virtual environments for various scenarios about
cities. It requires expertise and consideration, and therefore consumes massive time and …

Coarse building mass models are now routinely generated at scales ranging from individual
buildings through to whole cities. For example, they can be abstracted from raw …

The placement of vegetation plays a central role in the realism of virtual scenes. We
introduce procedural placement models (PPMs) for vegetation in urban layouts. PPMs are …

Abstract 3D building plays the essential role in digital city construction, city augmented
reality and smart urban planning & design. Conventional building construction is …

We present a novel procedural framework for interactively modeling building façades.
Common procedural approaches, such as shape grammars, assume that building façades …

Motivated by the fact that the medial axis transform is able to encode the shape completely,
we propose to use as few medial balls as possible to approximate the original enclosed …

In this paper, we address the problem of constraint detection for layout regularization. The
layout we consider is a set of two-dimensional elements where each element is represented …

Facade parsing aims to decompose a building facade image into semantic regions of the
facade objects. Considering each architectural element on a facade as a parameterized …

We introduce a new approach for procedural modeling. Our main idea is to select shapes
using selection-expressions instead of simple string matching used in current state-of-the-art …

We present an interactive method that allows users to easily abstract complex 3D models
with only a few strokes. The key idea is to employ well‐known Gestalt principles to help …