CN105277176A

CN105277176A - CCD combination total station photography base station photogrammetry method

Info

Publication number: CN105277176A
Application number: CN201510602572.1A
Authority: CN
Inventors: 冯仲科; 刘金成; 杨立岩
Original assignee: Beijing Forestry University
Current assignee: Beijing Forestry University
Priority date: 2015-09-18
Filing date: 2015-09-18
Publication date: 2016-01-27
Anticipated expiration: 2035-09-18
Also published as: CN105277176B

Abstract

The present invention discloses a CCD combination total station photography base station photogrammetry method. The CCD combination total station photography base station photogrammetry method is as follows: a CCD camera is rigidly combined with a total station, the photography number of panoramic photography is determined according to CCD camera view field angle, baseline length of a photography base station is determined according to CCD camera maximal field depth value, object space coordinates of at least two feature points of a to-be-measured target object and exterior orientation element values of the CCD camera during photography of each photograph can be measured accurately by use of the total station, panoramic photography and panoramic measurement can be completed by successive rotation of corresponding horizontal angles, and then the operation is repeated on another image pair observation point to complete photography and measurement and make a record.

Description

CCD combines total powerstation photography base station photogrammetric survey method

One, technical field

The present invention relates to a kind of new photogrammetric survey method, particularly one utilizes CCD to combine the photogrammetric method in total powerstation photography base station.

Two, technical background

Up to the present, engineering survey mainly still adopts the measurement of the instrument of surveying and mappings such as traditional total powerstation, and along with photogrammetric fast development, photogrammetric being applied in engineering survey is also become a kind of trend gradually, but be also confined to independent total station survey and Preliminary Applications photogrammetric stage now, in today of digital information development, these limitation that the engineering survey stage exists are more and more obvious:

1. adopt traditional total station survey, only can realize the measurement one by one of each point, workload is large, and efficiency is lower;

2. adopt traditional total station survey, field operation only can preserve text document after measuring, and is not easy to the data check of industry in the later stage, checks;

When 3. utilizing photogrammetric mode to carry out engineering survey, elements of exterior orientation during camera shooting is difficult to determine.

Therefore, the engineering survey mode adopted at present, no matter be that total station survey or Preliminary Applications are photogrammetric, how all limitation of various degrees, find a kind of measuring method overcoming these deficiencies and seem particularly important.

Three, summary of the invention

In order to overcome deficiency and the limitation of existing engineering survey mode, making full use of total Station Precise and measuring and digital photogrammetry advantage separately, object of the present invention is just to provide a kind of CCD total powerstation photography base station photogrammetric survey method.

The object of the present invention is achieved like this:

1. according to the CCD angle of view, determine singly to take the photograph station photography number of times;

2. according to CCD camera lens the maximal field depth length, determine that two take the photograph base length B between station;

3. each website total powerstation of taking the photograph measures at least two unique point object coordinates, and by the relative elements of exterior orientation during photography of total powerstation read-record CCD camera lens, has so repeated 360 ° of full shots;

4. by equipment placement by the observation station S that determines of a coordinate system ₁on, with reference to S ₁the optimum configurations of point, repeats aforesaid operations process, completes full shot and panorama measurement, and carries out relative recording.

This invention has the following advantages:

When 1. utilizing CCD total powerstation to carry out engineering survey, do not need with total powerstation each pointwise observation, only determine two unique point coordinates, efficiency improves a lot;

2. by CCD and total powerstation multiple measurement, namely remain the Measurement accuracy of total powerstation, the image of shooting when storing again measurement, is convenient to industry process in the later stage;

3. utilize CCD to combine total powerstation, can make full use of both advantages, elements of exterior orientation when just can determine that CCD camera lens is photographed by total station survey, is convenient to later stage computing.

Four, accompanying drawing illustrates:

Below in conjunction with accompanying drawing and example, the present invention is further described.

Fig. 1 be CCD total powerstation two photograph base station photography time coordinate system principle schematic.

Five, embodiment:

Utilize CCD total powerstation carry out photography base station photogrammetric time, metering system and calculation method have had larger improvement and bring new ideas, have provided a kind of new thinking and countermeasure of engineering survey, specifically:

(1) according to CCD lens parameters, the field angle size of CCD camera lens is specified, according to camera lens horizontal field of view angle δ ⁰, determine the single station photography in each photography base station number of times

(2) according to the maximal field depth Y of CCD camera lens _max, determine that the best takes the photograph station base length B, and in actual production practice, usually select y _maxas taking the photograph, station base length is comparatively suitable;

(3) at district to be measured reference mark S ₁on strictly flatten combined instrument, and known S ₁relative object coordinates (the Xs of point ₁, Ys ₁, Zs ₁), on its depth of field direction, determined that picture to another observation station S according to taking the photograph station base length B with after total station instrument coordinate orientation before this ₂object coordinates (Xs ₂, Ys ₂, Zs ₂), after be the relative object coordinates accurately measuring at least two unique points on object to be measured with total powerstation;

(4) regulate and record photography time horizontal angle α and vertical angle β, now complete photography and the measurement in a direction, then according to the photography frequency n that front is determined, each rotate corresponding horizontal angle rotate n time successively, complete full shot and panorama measurement;

(5) combined instrument is placed in picture to another observation station S ₂on, strict leveling also backsight observation station S ₁after orientation, repeated measures point S ₁on optimum configurations and operation steps, complete S ₂full shot on point and panorama are measured, and do respective record.

Claims

1.CCD combines total powerstation photography base station photogrammetric survey method, it is characterized in that: the 1. field angle size of clear and definite CCD camera lens, according to camera lens horizontal field of view angle δ °, determines the single station photography in each photography base station number of times 2. according to the maximal field depth Y of CCD camera lens _max, determine that the best takes the photograph station base length B, and select y _maxas taking the photograph, station base length is comparatively suitable; 3. at district to be measured reference mark S ₁on strictly flatten combined instrument, and known S ₁relative object coordinates (the Xs of point ₁, Ys ₁, Zs ₁), on its depth of field direction, determined that picture to observation station S according to taking the photograph station base length B with after total station instrument coordinate orientation before this ₂(Xs ₂, Ys ₂, Zs ₂), after be the relative object coordinates accurately measuring at least two unique points with total powerstation; Horizontal angle α when 4. regulating and record photography and vertical angle β, according to the photography frequency n that front is determined after completing the photography in a direction, rotates corresponding level angle and completes full shot and panorama measurement successively; 5. combined instrument is placed in observation station S ₂on, strict leveling also backsight observation station S ₁after orientation, repeated measures point S ₁on optimum configurations and operation steps, complete S ₂full shot on point and panorama are measured, and do respective record.