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Scheme for arranging ground photography base station net

A technology of ground photography and netting, applied in photogrammetry/video metrology, measuring devices, instruments, etc., can solve the problems of small coverage, slow speed, heavy measurement workload, etc., to improve coverage, improve efficiency and Rationality, effect of reducing field workload

Active Publication Date: 2016-01-06
BEIJING FORESTRY UNIVERSITY
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the traditional method of topographic map field survey, such as heavy workload, slow speed, and small coverage, improve the efficiency of ground photogrammetry topographic maps and fully cover the survey area, the present invention provides a ground photography base station network layout scheme

Method used

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  • Scheme for arranging ground photography base station net

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Embodiment Construction

[0014] A ground photography base station network deployment scheme is different from the existing methods, which reduces the field workload and improves the coverage of photogrammetry. The specific implementation steps are as follows:

[0015] 1) Determine the scale of the topographic map, and determine the photogrammetry accuracy m according to the scale of the topographic map p , using digital model① Calculate the farthest depth of field Y of the photographic image point max , where a is the camera pixel length, f is the camera focal length;

[0016] 2) if figure 1 As shown, firstly, select the photographic base station A in the area to be measured, and secondly, determine the next photographic base station B according to a certain direction. The photographic radius of the two base stations is R, and the distance between adjacent photographic base stations is 2R. Among them, R=kY max , k is a constant coefficient between 0 and 1, generally 0.7;

[0017] 3) Start photog...

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Abstract

The invention discloses a scheme for arranging ground photography base station net. The scheme includes determining photography accuracy m by measuring the topographic map scale, calculating photography depth of field Ymax by photography accuracy, arranging reciprocating photography base station point in the area to be measured, and performing full covering photography in the area to be measured having radius of kYmax.

Description

1. Technical field [0001] The invention relates to a scheme for setting up base stations for ground photography, in particular to a scheme for laying out a network for ground photography base stations. 2. Technical background [0002] The ground photogrammetry control point is a key link in photogrammetry, it is an important link to connect the photogrammetry image square coordinate system with the ground control point coordinate system, and it is an important basis for absolute orientation in photogrammetry. There are two ways to obtain image control points: full field distribution and sparse distribution. A small number of field photo control points are arranged at the points, and most of the remaining photo connection points are encrypted indoors using the principle of aerial triangulation. Therefore, in order to satisfy ground photogrammetry topographic map work, reduce field workload, and improve efficiency, a reasonable and efficient plan for laying out ground photogr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C11/00
CPCG01C11/00
Inventor 冯仲科杨立岩刘金成
Owner BEIJING FORESTRY UNIVERSITY
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