Model acquisition method and device based on laser projector

A laser projector and model acquisition technology, which is used in instruments, 3D modeling, image data processing, etc., can solve problems such as low accuracy and slow modeling speed, and achieve the effects of high model accuracy, fast calculation speed, and short time.

Active Publication Date: 2019-09-24
UNRE SHANGHAI INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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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 pr

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  • Model acquisition method and device based on laser projector

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Embodiment 1

[0048] This embodiment provides a model acquisition device based on a laser projector, and the model acquisition device includes a camera, a projector, and a processor.

[0049] The projector is a color laser projector.

[0050] The processor includes a DLP LightCrafter 4500 development board manufactured by Texas Instruments Corporation.

[0051] 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.

[0052] 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.

[0053] The processor is used to calibrate the camera and projector;

[0054] The projector is used to project a preset image, and the preset i...

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Abstract

The invention discloses a model acquisition method and device based on a laser projector. The model acquisition method is realized through a model acquisition device. The model acquisition device comprises a camera, a projector and a processor. The projector is a color laser projector. The model acquisition method comprises the steps of calibrating the camera and the projector; projecting a preset image; the camera shooting a preset image to obtain a mixed image; analyzing the mixed image to obtain sine wave structured light data and spatial coding data; the processor obtaining the absolute phase shift of the sine wave structured light according to the corresponding relation between the sine wave structured light data and the spatial coding data; the projector projecting sine wave structured light on the target object; the camera shooting an object image of the target object projected by the sine wave structured light; and the processor obtaining a three-dimensional model of the target object according to the absolute phase shift of the sine wave structured light and the object image. The method has the advantages that the operation speed is high, the time for obtaining the model of the object is short, and the model precision is high.

Description

technical field [0001] The invention relates to a model acquisition method and device based on a laser projector. 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 de...

Claims

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Application Information

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IPC IPC(8): G06T19/00G06T17/00
CPCG06T19/00G06T17/00
Inventor 袁丹寿
Owner UNRE SHANGHAI INFORMATION TECH CO LTD
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