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Method of structured light in 3-D real time videography

A technology of structured light and three-dimensional images, which is applied in optics, photography, and the use of optical devices, etc., to achieve good quality, eliminate motion blur, and good acquisition effects

Inactive Publication Date: 2010-08-11
SOUTHEAST UNIV
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  • Abstract
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Problems solved by technology

[0003] The present invention proposes a structured light method in three-dimensional real-time videography in order to solve the problems of acquisition effect, scope of application and implementation complexity of structured light technology in the existing three-dimensional real-time videography system

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  • Method of structured light in 3-D real time videography

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Embodiment Construction

[0015] As shown in Figure 1, the structured light method in the three-dimensional real-time imaging of the present invention comprises the following steps:

[0016] (1) Determine the color fringe period of the IP and DP mode structured light in the camera device, and form the corresponding IP mode and DP mode structured light pattern, wherein: the IP mode structured light is the initial mode structured light, and the DP mode structured light is the detail Mode structured light, the same below;

[0017] (2) Determine the projection frequency;

[0018] (3) Set the IP and DP mode structured light projection switching cycle N+1 according to the surface change speed and moving speed of the collected object. The faster the changing or moving speed, the larger the value of N+1, and vice versa. Determine the IP and DP mode structured light projection sequence, where: N is a natural number;

[0019] For example: if the projection frequency is 25 frames per second, then when N+1=5, sw...

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Abstract

The invention discloses a method of structured light in 3-D real time videography and belongs to the field of 3-D image information acquisition. The method comprises the following steps: firstly, determining a color stripe cycle of initial-prototype (IP) and detailed-prototype (DP) structured light, forming a corresponding IP and DP structured light pattern, determining a projection frequency, andsetting a projection switching period N+1 of the double-prototype(IP and DP) structured light according to the surface change and moving speed of an acquisition object and determining a projection sequence; and secondly, according to the projection switching period, acquiring an image of a projection target once at each time of the projection of the structured light, using the data acquired in each IP as 3-D image reference information for calculating the corresponding frames of following DPs, and using data acquired in each DP for calculating and outputting a frame of 3-D image, wherein theswitching period can be reset according to requirements during acquisition. The method of the invention has the advantages of good acquisition effect, no influence from the surface shape of an acquisition target, and good adaptability to the quick movement and change.

Description

technical field [0001] The invention relates to a structured light method based on dual-mode switching in three-dimensional real-time imaging, and belongs to the field of three-dimensional image information collection. Background technique [0002] The existing structured light methods for 3D real-time photography can generally be classified into two categories according to the number of structured light patterns that need to be projected for each frame of 3D image: single projection acquisition method and multiple projection acquisition method. The single projection acquisition method, that is, one frame of three-dimensional image only needs one structured light projection and image acquisition, and does not require a higher projection frequency and image acquisition frequency than the three-dimensional image output frequency, which can reduce the complexity and cost of system implementation, and can By increasing the shutter speed of the camera, the three-dimensional insta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B15/16G01B11/25
Inventor 衡伟
Owner SOUTHEAST UNIV
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