Method and device for extracting section line from oblique photography data

Method and device for extracting section line from oblique photography data

The invention relates to the technical field of data analysis, in particular to a method and device for extracting a section line from oblique photography data, computer equipment, a storage medium and a computer program product. The method comprises the steps of dividing oblique photography data in...

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Hauptverfasser: MA LIUQING, JIA QINGLEI, ZHOU HUAIPU
Format: Patent
Sprache:chi ; eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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creator MA LIUQING
JIA QINGLEI
ZHOU HUAIPU
description The invention relates to the technical field of data analysis, in particular to a method and device for extracting a section line from oblique photography data, computer equipment, a storage medium and a computer program product. The method comprises the steps of dividing oblique photography data into a plurality of block files according to geographic grids, setting root nodes in one-to-one correspondence with the block files in each block file, and hierarchically storing node files corresponding to child nodes derived from the root nodes in the block files; finding out a target block file and a target node file which intersect with the projection line data; reading specific geometric data in the target node file, wherein the geometric data is associated with section line extraction; and traversing geometric data in all the target node files by using a preset intersection algorithm to obtain profile points, and connecting the profile points to generate a target profile line. By adopting the method, the effici
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subjects CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
title Method and device for extracting section line from oblique photography data
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