Digital Puncture Point Method for Aerial Survey Field Industry
A kind of pricking point and field technology, which is applied in the field of digital pricking point in the field of aerial survey, can solve the problems of time-consuming to reach the design image control point site, difficult technology promotion, easy rework of pricking point error, etc., to achieve the goal of lowering the threshold of professional knowledge, The transmission is convenient and fast, and the effect of improving the accuracy of the pricking point
Active Publication Date: 2016-04-13
POWERCHINA XIBEI ENG
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Problems solved by technology
The traditional pricking method has the following defects: ①Due to the strict conditions for image control point selection, operators are required to have a high professional foundation and experience, and it is not easy to promote the technology
②Because the paper photo cannot be enlarged, it is difficult to accurately display the microscopic topography, and the pricking points are offset, and the error of individual pricking points exceeds the limit and it is easy to rework
③ In areas with complex terrain and roads, it is time-consuming to arrive at the site of the design image control point
④Traditional paper results are easily damaged and inconvenient to carry, and the speed of sending back the results from the field to the office is slow
Method used
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[0045] The purpose of the present invention is achieved by the following technical methods, designing a digital puncture method for aerial survey field, such as figure 1 As shown, at least the following steps are included:
[0046] Step 101: Office point selection module: deploy a sufficient number of candidate image control points covering the survey area, and import the digital aerial image and the approximate coordinates of the candidate image control points into the field digital pricking device;
[0047] Step 102: Field point selection module: with the help of field digital pricking equipment, at the corresponding sites of all the candidate image control points selected in step 101, calibrate the final image control point information on the digital aerial image, and set up an instrument to measure its ground coordinates Po(X,Y,H) .
[0048] The office point selection module in the step 101 at least includes the following steps:
[0049] Step 201: Data preparation, sor...
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The invention provides a digital point-pricking method for aerial survey field work. The digital point-pricking method for aerial survey field work is characterized by comprising at least the following steps: step 101, interior work point selection module: arranging a sufficient number of alternative image control points covering a detection area, and introducing approximate?coordinates of digital aerial images and the alternative image control points into the field digital point-pricking equipment; and step 102: field work point selection module: by means of the field digital point-pricking equipment, marking final image control point information of all alternative image control points selected in the step 101 at the corresponding sites in the digital aerial image, and setting up an instrument to determine a ground coordinate (i) Po (X, Y, H) ( / i). The digital point-pricking method for aerial survey field work can improve the efficiency and precision of point-pricking work and enhance the universality and convenience of working.
Description
technical field [0001] The invention relates to a digital puncture point method for aerial survey field industry. Background technique [0002] The results of pricking points in the field of aerial photogrammetry are used as the basis for the operation of internal aerial three-dimensional encryption, and its accuracy directly determines the measurement accuracy of subsequent aerial surveys; in addition, unqualified pricking points will cause rework, which will lead to extended construction periods and increased project costs. Failure to complete the pricking point work will lead to inability to start office work, thereby prolonging the overall project progress. [0003] The main task of the piercing point operation in the aerial survey field is to lay out a sufficient number of candidate image control points covering the survey area, and obtain each image control point after determining the specific positions of the candidate image control points on site Pt Accurate image c...
Claims
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IPC IPC(8): G01C15/02
CPCG01C15/02
Inventor 尚海兴黄文钰雷建朝鹿恩锋巨天力
Owner POWERCHINA XIBEI ENG