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Model obtaining method and device based on spatial coding

A technology of model acquisition and spatial encoding, applied in 3D modeling, image data processing, instruments, etc., can solve the problems of low precision and slow modeling speed, and achieve the effect of high model precision, fast operation speed and short time

Active Publication Date: 2019-08-27
上海青燕和示科技有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defects of slow modeling speed and low precision in the existing three-dimensional reconstruction of grating projection, and provide a , the method and device for obtaining a model based on spatial coding with the advantages of short time to obtain a model of an object and high model accuracy

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  • Model obtaining method and device based on spatial coding

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Embodiment 1

[0054] This embodiment provides a model acquisition device based on spatial coding, and the model acquisition device includes a camera, a projector, and a processor.

[0055] The processor includes a DLP LightCrafter 4500 development board manufactured by Texas Instruments Corporation.

[0056] The model acquisition device includes a housing, the camera and the projector are both arranged in the housing, the camera includes a camera lens, the projector includes a projection lens, the camera lens and the projector The lens was taken on the front of the enclosure.

[0057] In this embodiment, the camera and the projector are integrated, but an independent camera and an independent projector can also be used as a processor to realize the model acquisition device of this embodiment.

[0058] The processor is used to calibrate the camera and projector;

[0059] The projector is used to project sine wave structured light and spatially encoded images;

[0060] The camera is used t...

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Abstract

The invention discloses a model acquisition method and device based on spatial coding. The model acquisition method is realized through a model acquisition device, the model acquisition device comprises a camera, a projector and a processor, and the model acquisition method comprises the steps that the processor calibrates the camera and the projector, the projector projects the sine wave structured light and a spatial coding image, the camera shoots the sine wave structured light to generate a structured light image and shoots a spatial coded image to generate a coded image, the processor obtains the absolute phase shift of the sine wave structured light according to the corresponding relation between the structured light image and the coded image, the projector projects the sine wave structured light on a target object, the camera shoots an object image of the target object projected by the sine wave structured light, and the processor obtains a three-dimensional model of the targetobject according to the absolute phase shift of the sine wave structured light and the object image. The method and the device have the advantages that the operation speed is high, the time for obtaining the model of the object is short, and the model precision is higher.

Description

technical field [0001] The invention relates to a method and device for obtaining a model based on spatial coding. Background technique [0002] Three-dimensional reconstruction refers to the establishment of a mathematical model suitable for computer representation and processing of three-dimensional objects. It is the basis for processing, operating and analyzing its properties in a computer environment, and it is also a key technology for establishing a virtual reality that expresses the objective world in a computer. [0003] Three-dimensional reconstruction by grating projection is a three-dimensional reconstruction method. The grating is projected onto the reference plane and the surface of the measured object respectively. Since the reference plane is a horizontal plane, the reference grating projected on it will not be deformed; when the grating is projected onto the measured object When measuring the surface of an object, the grating will have different degrees of d...

Claims

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Application Information

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IPC IPC(8): G06T17/00G06T7/80
CPCG06T17/00G06T7/80
Inventor 袁丹寿
Owner 上海青燕和示科技有限公司
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