02-06-2022 дата публикации
Номер: US20220169295A1
Автор:
Chen Hanxin,
Hu Bo,
LI CHAO,
Lin Jiangwei,
Ming Jing,
Tang Hao,
Teng Degui,
Wang Datao,
Xiang Zejun,
Xiong Xuexiang,
Yu Chun,
Yuan Changzheng,
Zhang Heng
A method for extracting and analyzing spatial information of a control and protection zone of rail transit with multiple threshold constraints, including the following steps: 1, performing format conversion on a data file and extracting a plurality of coordinate points; 2, selecting key points from the plurality of coordinate points for data simplification to obtain a simplified limit line, a simplified outer structure edge line and a simplified boundary line of construction; 3, programming the simplified limit line, the simplified outer structure edge line, and the simplified boundary line of construction, calling a database, and reading data therefrom for spatial relationship comparison; 4, determining whether the construction of a rail-involved construction project intrudes into a control and protection zone of rail transit according to a result of the spatial relationship comparison, thus completing the extraction and analysis of the spatial information of the control and protection zone of rail transit. 1. A method for extracting and analyzing spatial information of a control and protection zone of rail transit with multiple threshold constraints , comprising the following steps:{'b': 2', '4', '3, 'S1, performing format conversion on a data file and extracting a plurality of coordinate points from a limit line () of a control and protection zone of rail transit, an outer structure edge line () of a station and tunnel (), and a boundary line of construction of a rail-involved construction project;'}{'b': 5', '2, 'S2, selecting key points () in the limit line () for storing in a characteristic point set M;'}S3, defining a distance threshold dL and an area threshold dS;{'b': 2', '5', '2, 'S4, dividing the limit line () into several segments by using the key points () in the characteristic point set M, and performing simplification on each segment of the limit line () with the distance threshold dL by using the Douglas-Peucker algorithm, thereby obtaining ...
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