Intelligent generation of indoor topology (i-GIT) for human indoor pathfinding based on IFC models and 3D GIS technology

Lin, Will Y.; Lin, Pei-Chao

doi:10.1016/j.autcon.2018.07.016

Cited by 43 publications

(53 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, a manual process is often costly and prone to human errors, so many studies are exploring how to automate the abovementioned process. Since the indoor space model constructed using geometric-based approaches is relatively simple, most studies focus on generation of symbolic-based models [1,5,[22][23][24][25]. Scholars divide these algorithms into three categories: visibility graph, straight skeletons, and dual structures.…”

Section: Indoor Spaces For Emergency Responsementioning

confidence: 99%

“…As spatial information is becoming readily available and commonplace, location-based services (LBS) have expanded from outdoor to indoor [1][2][3][4][5]. The so-called indoor LBS refers to location-based services that occur in indoor spaces [4].…”

Section: Introductionmentioning

confidence: 99%

“…The latter are stairs, elevators, escalators, ramps, etc. [1]. Unlike an outdoor space, an indoor space is relatively closed, narrow, and private; the space structure is complex, and movement within is in 3D [15].…”

Section: Introductionmentioning

confidence: 99%

“…Different models have differences in aspects like spatial topology, location reference, model accuracy, routing algorithm, and visualization of the path [15]. Therefore, there are also many scholars studying the methods of generation for different spatial data models [1,5,[22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

“…Based on IFC models, i-GIT can automatically construct 3D indoor networks including level and non-level paths. Non-level paths include straight stairs [1,33], ramps, and elevators [34], so it is applicable for those indoor LBS requiring a high-accuracy indoor space model, such as emergency response systems. However, the current algorithm of i-GIT only supports straight stairs, as shown on the left side of Figure 1, and it does not support the spiral and winder stairs that are commonly seen in town houses or public buildings.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Automatic Generation of High-Accuracy Stair Paths for Straight, Spiral, and Winder Stairs Using IFC-Based Models

Lin

2020

IJGI

Self Cite

View full text Add to dashboard Cite

The indoor space model is the foundation of most indoor location-based services (LBS). A complete indoor space model includes floor-level paths and non-level paths. The latter includes passages connecting different floors or elevations such as stairs, elevators, escalators, and ramps. Most related studies have merely discussed the modeling and generation of floor-level paths, while those considering non-level paths usually simplify the formation and generation of non-level paths, especially stairs, which play an important role in emergency evacuation and response. Although the algorithm proposed by i-GIT approach, which considers both floor-level and non-level paths, can automatically generate paths of straight stairs, it is not applicable to the spiral stairs and winder stairs that are common in town houses and other public buildings. This study proposes a novel approach to generate high-accuracy stair paths that can support straight, spiral, and winder stairs. To implement and verify the proposed algorithm, 54 straight and spiral stairs provided by Autodesk Revit’s official website and three self-built winder stairs are used as test cases. The test results show that the algorithm can successfully produce the stair paths of most test cases (49/50), which comprehensively extends the applicability of the proposed algorithm.

show abstract