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Three-dimensional scanning device and three-dimensional scanning method

A technology of 3D scanning and to-be-scanned, applied in the field of 3D scanning, which can solve problems such as difficulty in ensuring the movement trajectory of 3D scanning devices, inaccurate 3D modeling, etc., achieve low cost, improve accuracy, and achieve simple effects

Active Publication Date: 2018-08-31
LENOVO (BEIJING) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In fact, when the user holds the 3D scanning device to scan the object to be scanned, it is difficult to ensure that the trajectory of the 3D scanning device is an ideal circle, which will cause inaccurate 3D modeling

Method used

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  • Three-dimensional scanning device and three-dimensional scanning method

Examples

Experimental program
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no. 1 example

[0038] In the embodiment of the present invention, a gravity sensor module, such as a G-sensor (gravity sensor), can be set in the three-dimensional scanning device to measure the change of acceleration (ie, the direction of motion of the three-dimensional scanning device) when the three-dimensional scanning device acquires scanned images, Estimating the contour area of ​​the object to be scanned in the scanned image according to the measured acceleration change of the three-dimensional scanning device, and then comparing the contour area of ​​the object to be scanned in the scanned image with the estimated contour area, if the object to be scanned in the scanned image is If the difference between the outline area of ​​the scanned object and the estimated outline area is small, it indicates that the three-dimensional scanning device is facing the object to be scanned when the scanned image is taken, and the scanned image can be selected as the first image. If the outline area of...

no. 2 example

[0044] In the above-mentioned embodiment, an angle measurement module, such as a gyroscope, can also be set in the three-dimensional scanning device to measure the deflection angle when the scanned image is collected, and when the outline area of ​​the object to be scanned in the scanned image is compared with the estimated outline area , considering the deflection angle when acquiring the scanned image, if the difference between the outline area of ​​the object to be scanned and the estimated outline area in the scanned image is small, it means that the 3D scanning device is facing the object to be scanned when the scanned image is taken, and this scan can be selected If the image is used as the first image, if the outline area of ​​the object to be scanned in the scanned image differs greatly from the estimated outline area, it indicates that the three-dimensional scanning device is not facing the object to be scanned when the scanned image is taken, and the scanned image is d...

no. 3 example

[0049] When the three-dimensional scanning device is scanning the object, the light beam emitted by the three-dimensional scanning device forms a light spot on the object to be scanned, which is usually a regular circle. In the embodiment of the present invention, the light spot information in the scanned image can be analyzed and judged Whether the spot information can meet the needs of calculating the shooting distance between the object to be scanned, for example, whether there is a spot in the image or whether the spot is a regular circle, etc., if there is no spot in the image or the spot is an irregular circle , it may indicate that the 3D scanning device is not facing the object to be scanned when taking the scanned image, then the scanned image can be discarded. If there is a light spot in the image and the light spot is a regular circle, it may indicate that the 3D scanning device took the scanned image When the object is being scanned, the scanned image can be selecte...

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Abstract

The invention provides a three-dimensional scanning device and a three-dimensional scanning method. The three-dimensional scanning device comprises a light beam transmission module, an image acquisition module, a distance determination module and a three-dimensional modeling module, wherein the light beam transmission module is used for transmitting light beams to an object to be scanned, and light spots are formed on the object to be scanned by the light beams; the image acquisition module is used for acquiring a scanning image sequence of the object to be scanned; the distance determination module is used for acquiring a first image sequence in the scanning image sequence, and determining a photographing distance between the three-dimensional scanning device and the object to be scanned according to light spot information of each first image in the first image sequence when the first images are acquired; and the three-dimensional modeling module is used for determining a three-dimensional model of the object to be scanned according to the first image sequence and the photographing distance between the three-dimensional scanning device and the object to be scanned according to the first image sequence when the first images are acquired. According to the three-dimensional scanning device and the three-dimensional scanning method, even if the movement track of the image of the object to be scanned, which is photographed by the three-dimensional scanning device, is not ideal circumference, the 3D modeling accuracy also can be guaranteed.

Description

[0001] This application is a divisional application, its parent application number is 201110288847.0, the title of the invention is a three-dimensional scanning device and a three-dimensional scanning method, and the filing date is September 26, 2011. technical field [0002] The invention relates to the technical field of three-dimensional (3D) scanning, in particular to a three-dimensional scanning device and a three-dimensional scanning method. Background technique [0003] Such as figure 1 As shown, when using a 3D scanning device (mobile phone, video camera, camera, etc.) The sequence and parameters such as the distance R between the three-dimensional scanning device and the object to be scanned when capturing images are used to calculate the 3D model of the object to be scanned. [0004] When using a 3D scanning device to take pictures of the object to be scanned, the 3D scanning device must maintain a nearly circular motion relative to the object to be scanned, that ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/24
CPCG01B11/24
Inventor 阳光杨锦平邵翔尚可
Owner LENOVO (BEIJING) LTD