3D acquisition and size measurement method for space field

A technology of 3D and acquisition equipment, applied in the field of 3D topography measurement and topography measurement, can solve the problem that the size of the target object is difficult to accurately determine and cannot be applied, and achieves the effect of strong applicability, improved synthesis accuracy, and increased synthesis speed.

Active Publication Date: 2020-07-28
天目爱视(北京)科技有限公司
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Problems solved by technology

However, in practical applications, it is found that the size of objects in

Method used

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  • 3D acquisition and size measurement method for space field
  • 3D acquisition and size measurement method for space field
  • 3D acquisition and size measurement method for space field

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Embodiment Construction

[0036] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0037] 3D Acquisition Calibration Process

[0038] When the target object to be collected is constantly changing, or the target object is far away, or the mark point cannot be placed on the target object, etc., you can:

[0039] Set the coordinate system xyz to collect the position and attitude of the device, and the coordinate system XYZ to calibrate the space.

[0040] Place a pose sensor on the acquisition device to measure t...

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Abstract

The embodiment of the invention provides an acquisition device and method in 3D modeling. The method comprises the following steps that (1) a plurality of images of a target object are acquired by using the acquisition device; (2) the calibration device acquires the position and attitude information of the acquisition device when the acquisition device acquires each image; (3) the processor synthesizes a three-dimensional model of the target object according to the plurality of images, and obtains three-dimensional coordinates corresponding to the homonymous image points according to the position and attitude information of the acquisition equipment, so as to obtain three-dimensional model point cloud with accurate three-dimensional coordinates; and the calibration device obtains positionand attitude information according to comparison of the acquired star map and the navigation star map. The absolute size calibration of the target object is realized through a method for acquiring theposition and the posture of the camera, and a homonymous image point resolving mode is adopted, so that the target object does not need to be subjected to calibration object placement or calibrationpoint projection in advance.

Description

technical field [0001] The invention relates to the technical field of shape measurement, in particular to the technical field of 3D shape measurement. Background technique [0002] Most of the 3D model construction is done on the ground or in the air. But no one has yet mentioned how 3D models in space are constructed. In fact, camera photography is currently used for satellite monitoring, meteorite tracking, and other monitoring, measurement, and identification of objects outside the atmosphere. However, all the information obtained in this way is two-dimensional information, and the three-dimensional shape of the target cannot be accurately obtained, which will affect the effect of measurement, identification and tracking. [0003] But at the same time, it is impossible to place a calibration point on the target because the target in space is far away and many targets cannot be determined in advance. Then how to accurately obtain the absolute size of the target object ...

Claims

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Application Information

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IPC IPC(8): G06T17/00G06T7/80G06T7/70G01B11/24G01B11/00
CPCG01B11/002G01B11/24G06T17/00G06T2207/10028G06T7/70G06T7/85
Inventor 左忠斌左达宇
Owner 天目爱视(北京)科技有限公司
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