Three-dimensional collection device and three-dimensional scanning system

A collection device and three-dimensional scanning technology, applied in the field of three-dimensional scanning, can solve the problems of low scanning accuracy, degraded or missing important features, limited accuracy of point cloud data, etc., and achieve the effects of improving scanning accuracy, simple application operation, and good practicability.

Active Publication Date: 2016-11-09
XI AN JIAOTONG UNIV
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Problems solved by technology

[0003] The existing 3D scanning system or device has the following characteristics: the scanning takes a long time (several seconds), it is difficult for the human body to maintain the same expression or static posture for a long time, which increases the difficulty of point cloud registration; the accuracy of the point cloud data of the human face is limited, As a result, important features are degraded or missing; i

Method used

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  • Three-dimensional collection device and three-dimensional scanning system
  • Three-dimensional collection device and three-dimensional scanning system
  • Three-dimensional collection device and three-dimensional scanning system

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Example Embodiment

[0023] In one embodiment, a three-dimensional acquisition device is disclosed: the three-dimensional acquisition device includes a probe and a calibration board; the calibration board is used to calibrate the probe; the probe includes a speckle projector, a first black and white A camera unit, a second black and white camera unit, and a color camera unit; the speckle projector includes a flash, a Fresnel lens, a speckle lens, and a speckle lens; the Fresnel lens converts the divergent light of the flash into parallel light The parallel light is directed to the speckle sheet, and the speckle pattern on the speckle sheet is projected onto the three-dimensional scanning object by the speckle lens; the first black and white camera unit and the second black and white camera unit collect the three-dimensional scanning object The speckle image; the color camera unit is used to collect color images of three-dimensional scanned objects.

[0024] The three-dimensional acquisition device ca...

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Abstract

The invention discloses a three-dimensional collection device and a three-dimensional scanning system. Speckles projected by the three-dimensional collection device are nontoxic and pollution free, and speckle patches used enable speckle patterns to be drawn delicately so as to improve scanning data collection accuracy. A single control unit is adopted to control and trigger a speckle projector to project speckles and control corresponding speckle collection and colorful image collection, which make image collection time short and make speed fast and can effectively avoid a displacement error of a scanned object. The three-dimensional system applies the three-dimensional collection device having all the mentioned features and provides a three-dimension optical non-contact three-dimensional scanning mode, which produces less damage on a living body, and has fast scanning speed and high accuracy.

Description

technical field [0001] The present disclosure relates to the field of three-dimensional scanning, and in particular, relates to a three-dimensional acquisition device and a three-dimensional scanning system. Background technique [0002] Three-dimensional scanning is the process of obtaining three-dimensional coordinate information of the human body surface, which is widely used in 3D printing, laser engraving, medical plastic surgery and other fields. Three-dimensional non-contact scanning of the human body can be divided into laser scanning and structured light scanning. Because laser has certain damage to the human body, structured light is mainly used for human body scanning. The existing human face scanning is mainly completed in the process of full-scale scanning of the human body. At the same time, the human face is an important indicator of individual differences. Obtaining characteristic 3D data of the human face is of great significance for identity recognition and...

Claims

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Application Information

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IPC IPC(8): G01B11/25
CPCG01B11/2504G01B11/254
Inventor 王永信卢秉恒梁晋冯超刘世凡
Owner XI AN JIAOTONG UNIV
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