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Building volume measurement method based on UAV picture

A volume measurement and building technology, applied in the field of image processing, can solve the problems of large error, slow measurement speed, unsafe and so on

Inactive Publication Date: 2019-06-11
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

Therefore, it is difficult to directly measure its volume, and if only relying on manual estimation, not only the workload is heavy, but also the measurement speed is slow, it takes a long time, and may even cause a series of problems such as large errors and unsafety

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  • Building volume measurement method based on UAV picture
  • Building volume measurement method based on UAV picture
  • Building volume measurement method based on UAV picture

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Embodiment Construction

[0080] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0081] A method for measuring building volume based on unmanned aerial vehicle pictures, comprising the following steps:

[0082] Step 1: Use the UAV to collect image information around the building, and obtain multiple picture sequences of the building.

[0083] Step 2: After the image sequence is processed by bilateral filtering, use the Harris corner detection algorithm to obtain the corner points of the image sequence. The process is as follows figure 2 shown.

[0084] In said step 2, specifically include the following steps:

[0085] Step 2-1: Read the image sequence, use bilateral filtering to denoise the image, and perform grayscale processing on the image. The processed image sequence is denoted as I l (l=1.2...,k).

[0086] Step 2-2: Calculate image I l The first-order derivative of each pixel in the horizontal directi...

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Abstract

The invention relates to a building volume measurement method based on a UAV picture. The building volume measurement method based on the UAV picture comprises the steps of: performing surround picture information acquisition on a building by utilizing a UAV, and obtaining multiple picture sequences of the building; after the picture sequences are processed by bilateral filtering, obtaining cornerpoints of the picture sequences by adopting a Harris corner point detection algorithm; performing rough corner point matching by adopting a zero mean cross-correlation method, and establishing a one-to-many corresponding relationship; then, processing roughly matched corner points by adopting a relaxation iterative method, so that one-to-one precisely matched corner point pairs are obtained; circularly calculating space coordinates of matched points by utilizing a recovering structure algorithm from motion, and optimizing the space coordinates by utilizing a beam adjustment method, so that the three-dimensional point cloud of the building is obtained; performing Delaunay triangularization on the three-dimensional point cloud by utilizing a point-by-point insertion method; and finally, calculating the volume of the building on a constructed Delaunay triangular net model by utilizing an integral method.

Description

technical field [0001] The invention belongs to the field of image processing, and in particular relates to a building volume measurement method based on drone pictures. Background technique [0002] In the field of engineering, it is often necessary to measure and estimate the volume of buildings. Such measurement objects usually have the characteristics of large volume and irregular shape. Therefore, it is difficult to directly measure its volume, and if only relying on manual estimation, not only the workload is heavy, but also the measurement speed is slow, it takes a long time, and may even cause a series of problems such as large errors and unsafety. Contents of the invention [0003] The purpose of the present invention is to directly use sequence image information obtained by drones to process and calculate building volumes to provide means for engineering construction, and to propose a building volume measurement method based on drone pictures. [0004] A method ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00
Inventor 宋建新巫荣
Owner NANJING UNIV OF POSTS & TELECOMM
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