A Rapid Modeling Method for 3D Architectural Scene

The existing 3D scene layout methods, which mainly focus on indoor scenes, are limited in outdoor applications. In this paper, the example-based modeling method is introduced into the outdoor modeling, and an automatic layout optimization method for outdoor scenes is proposed. As an application platform, the sketch-based 3D model retrieval and assemble system is realized as well. Different from the current methods, firstly, we adopt an improved manifold sorting algorithm in sketch retrieval method, which can get the 3D models rapidly; secondly, according to particular properties of outdoor architectures, specialized energy constraints are proposed, which defines the energy function that meets the functional and aesthetic needs; thirdly, the scene achieves automatic layout by adopting simulated annealing algorithm. By stepped asymptotic optimization strategy and random jumps, we can avoid falling into constraint conflicts and local optimal traps. Experimental results show the robustness and effectiveness of our algorithm in different scenes. Our algorithm has been applied in the actual development of game scenes.