Optimized Vectorizing of Building Structures with Switch: High-Efficiency Convolutional Channel-Switch Hybridization Strategy

• URL: http://arxiv.org/abs/2306.15035v2
• Date: Sat, 9 Mar 2024 14:41:50 GMT
• Title: Optimized Vectorizing of Building Structures with Switch: High-Efficiency Convolutional Channel-Switch Hybridization Strategy
• Authors: Moule Lin, Weipeng Jing, Chao Li and Andr\'as Jung
• Abstract summary: We propose an advanced and adaptive shift architecture for building planar graph reconstruction. The SwitchNN architecture incorporates a group-based parameter-sharing mechanism inspired by the convolutional neural network process. Our results demonstrate the effectiveness of this innovative architecture in building planar graph reconstruction from 2D building images.
• Score: 5.563205385450147
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: The building planar graph reconstruction, a.k.a. footprint reconstruction, which lies in the domain of computer vision and geoinformatics, has been long afflicted with the challenge of redundant parameters in conventional convolutional models. Therefore, in this letter, we proposed an advanced and adaptive shift architecture, namely the Switch operator, which incorporates non-exponential growth parameters while retaining analogous functionalities to integrate local feature spatial information, resembling a high-dimensional convolution operation. The Switch operator, cross-channel operation, architecture implements the XOR operation to alternately exchange adjacent or diagonal features, and then blends alternating channels through a 1x1 convolution operation to consolidate information from different channels. The SwitchNN architecture, on the other hand, incorporates a group-based parameter-sharing mechanism inspired by the convolutional neural network process and thereby significantly reducing the number of parameters. We validated our proposed approach through experiments on the SpaceNet corpus, a publicly available dataset annotated with 2,001 buildings across the cities of Los Angeles, Las Vegas, and Paris. Our results demonstrate the effectiveness of this innovative architecture in building planar graph reconstruction from 2D building images.

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