Three-dimensional imaging method

A technology of three-dimensional imaging and three-dimensional data, which is applied in the field of three-dimensional imaging, can solve problems such as imaging distortion and three-dimensional image precision error, and achieve the effect of reducing precision error and improving accuracy

Active Publication Date: 2015-04-15
GUANGDONG LAUNCA MEDICAL DEVICE TECH
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Problems solved by technology

At present, in the reconstruction process of 3D data, there are often large precision errors in the final 3D image due to

Method used

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Embodiment Construction

[0021] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] Such as figure 1 , figure 2 and image 3 As shown, the 3D imaging method is divided into real-time processing and post-processing. Real-time processing is to quickly process the two-dimensional image on the computer during the mobile scanning process of the handheld camera, and display the position of the camera and the scanned three-dimensional model in real time. Post-processing is to process the collected data again after scanning to obtain more accurate 3D data.

[0023] Such as figure 1 and figure 2 The workflow block diagram of the real-time processing shown is mainly divided into three steps: initial processing, restoring the camera position, and refining the camera position and merging the 3D point cloud. In the initial processing stage, at each independent moment (t0, t1, t2, ..., tn) of the handheld 3D scanning process...

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Abstract

The invention relates to a three-dimensional imaging method including real-time processing and post-processing. In the real-time processing, two-dimensional images are quickly processed in a computer when a camera moves for three-dimensional scanning, and the position of the camera and a three-dimensional model scanned are displayed in real time; in the post-processing, data acquired in the real-time processing are secondarily processed to obtain reconstructed three-dimensional data. The three-dimensional imaging method has the advantages that the relative position of the camera held by hand for scanning can be accurately measured, large precision errors of final three-dimensional images caused by stacking of multiple three-dimensional point cloud groups are greatly decreased, and thus, accuracy of the three-dimensional imaging is improved.

Description

technical field [0001] The invention belongs to the field of cameras, and in particular relates to a three-dimensional imaging method. Background technique [0002] In the field of 3D imaging, when the field of view of the 3D camera is smaller than the shape of the object or the camera requires multiple viewing angles to fully capture the object, it is usually necessary to use a mobile camera (such as a handheld scanner) to obtain a complete 3D image of the object. When performing handheld 3D scanning, in addition to 3D point cloud reconstruction at a single time, it is also necessary to accurately measure the relative position of the camera in different time periods, so that multiple sets of 3D point clouds can be superimposed to finally reconstruct the complete 3D shape of the object . At present, in the reconstruction process of 3D data, there are often large precision errors in the final 3D image due to the superposition of multiple sets of 3D point clouds and other rea...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T17/00
CPCG06T7/70G06T17/00
Inventor 吕键
Owner GUANGDONG LAUNCA MEDICAL DEVICE TECH
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