Correction method for aerial surveying and mapping images
An image correction and aerial photography technology, which is applied in the field of aerial photography surveying and mapping, can solve the problems of inability to obtain ground altitude data and ground altitude error, and achieve the effects of easy implementation, lower accuracy requirements, and improved proportional accuracy
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0040] A method for correcting the proportion of an aerial surveying and mapping image of the present invention comprises the following steps:
[0041] 1) Set two reference points in the measured area, which can be clearly identified in the image map obtained by aerial photography; figure 1 It is a schematic diagram of the measured area in this embodiment, such as figure 1 As shown, in the measured area, two identification points A and B are set respectively, and the identification points are light sources, so that they can be clearly identified in the aerial image map;
[0042]2) Measure the horizontal distance L between the two reference points A and B; the reference points are respectively equipped with GPS positioning devices, so that the latitude and longitude information of each reference point can be obtained through the GPS positioning device, and according to the latitude and longitude of each reference point The information calculates the horizontal distance L betwe...
Embodiment 2
[0049] A method for correcting aerial photography surveying and mapping images, comprising the following steps:
[0050] 1) Set at least two reference points in the measured area, the reference points are located at the start of the aerial photography of the measured area, and the reference points can be captured in the first picture of the aerial photography at the same time;
[0051] 2) Measure the horizontal distance between any two reference points;
[0052] 3) According to the target scale and the horizontal distance between the two reference points measured in step 2), calculate the expected distance between the two final image points in the final image map corresponding to the target scale, where the final The image point is the image corresponding to the reference point in the final image map;
[0053] 4) Take aerial photography of the measured area;
[0054] 5) Measure the actual distance between the two reference points in step 2) and the two original image points ...
Embodiment 3
[0060] A method for correcting an aerial surveying and mapping image, comprising the steps described in Embodiment 1 or Embodiment 2, and further comprising the step of correcting the altitude of the aerial surveying and mapping image of the measured area, including:
[0061] 1) Obtain the altitude x of two adjacent reference points C and D through the GPS positioning device set at each reference point 1 、x 2 ;
[0062] 2) Set any point E on the ground between C and D that needs to be corrected for altitude. When the aircraft flies over the two reference points C, D and point E, the positions are c, d, e. Collect The distance h between the aircraft and the ground measured by the aircraft flying to c, d, e 1 、h 2 、h 3 ,Right now image 3 The distances from point c to point C, point d to point D, and point e to point E are respectively h 1 、h 2 、h 3 ;
[0063] 3) According to the altitude x of the two reference points C and D obtained in step 1) 1 、x 2 and the distanc...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com