Obtaining three-dimensional models of urban scenes from sensor data is a challenging topic. The construction of 3D city models requires fusion of data coming from different sensors, such as laser scanners and cameras. At a first phase, we will process building facades, which will be considered as textured 3D planes. The acquisition system is equipped with two laser scanners and many (twelve) ca...

We present a method for recognition of structured images and demonstrate it on the detection of windows in facade images. Given an ability to obtain local low-level data evidence on primitive elements of a structure (like window in a facade image), we determine their most probable number, attribute values (location, size) and neighborhood relation. The embedded structure is weakly modeled by pa...

For quite a while architects have been dreaming of architecture that can change its appearance. The motivation for such a change ranges from rational adaptation to environmental variation according to a time of day, season, or temperature, to pure aesthetics and ordinary commercialism. One of the most recognized examples is Jean Nouvel’s Arab World Institute in Paris, where 30 000 light-sensiti...

Many man-made objects, in particular building facades, exhibit dominant structural relations such as symmetry and regularity. When editing these shapes, a common objective is to preserve these relations. However, often there are numerous plausible editing results that all preserve the desired structural relations of the input, creating ambiguity. We propose an interactive facade editing framewo...

This paper provides an overview and analysis of research-in-progress on automated facade pattern generation for The Edmond and Lily Safra Center for Brain Sciences. This pattern is derived from accurate microscopic scans of brain tissue and is architecturally reconstructed with implementation of structural and fabrication constraints. A single automated work-flow and pattern reconstruction is p...

Factory CommandParser Facade

We present an algorithm for realtime rendering of large-scale city models with procedurally generated facades. By using highly detailed assets like windows, doors, and decoration such city models can provide an extremely high geometric level of detail but on the downside they also consist of billions of polygons which makes it infeasible to even store them as explicit polygonal meshes. Moreover...

In this paper we report on a system to extract 3D information from oriented digital facade images using various feature extraction/matching methods. We emphasize on 2D feature extraction from digital images including contour chains, line segments and vanishing points. The extraction of 3D primitives is based on line matching over multiple oriented views and 3D plane detection by a line grouping...

In this paper, we describe a novel technique to identify and extract windows from a building’s frontal facade. Feature detection in buildings has long been an area of research interest for its applications in 3D city modeling and scene visualization. We utilize a combination of projection profiles, mutual information, and a feature extraction technique (Snake Algorithm). We have found this appr...

The Lawrence-Wentworth House, originally the home of one of Lowell's antebellum mill owners, has had numerous alterations and changes in use since its construction in 1831. Its original Greek Revival street facade was altered sometime after the Civil War to such an extent that it appears more Victorian than Greek Revival. Beginning at the turn of the century, the single family residence was con...