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Non-inductive three-dimensional face reconstruction method and acquisition reconstruction system

A technology of 3D face and target face, which is applied in the field of non-sensing 3D face reconstruction method and acquisition and reconstruction system, can solve the problems of poor accuracy, high equipment requirements, and complex structure, so as to reduce the error matching rate and improve Accuracy, the effect of reducing registration error

Active Publication Date: 2021-02-02
WISESOFT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the problems existing in the prior art that the effect of improving accuracy is poor, and the required equipment is high, the structure is complicated, and the cost is high, and to provide a non-sensing three-dimensional face reconstruction method and acquisition and reconstruction system

Method used

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  • Non-inductive three-dimensional face reconstruction method and acquisition reconstruction system
  • Non-inductive three-dimensional face reconstruction method and acquisition reconstruction system
  • Non-inductive three-dimensional face reconstruction method and acquisition reconstruction system

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Embodiment 1

[0127] Such as figure 1 Shown, a kind of senseless three-dimensional face reconstruction method, described method comprises the following steps:

[0128] S1: Calibrate the target image by using a ring-type double-center calibration plate, and calibrate the camera parameters and image plane space parameters;

[0129] S2: Projecting a structured light image to the target face according to the camera parameters and image plane space parameters and collecting reflected structured light image data and texture images;

[0130] S3: Dephasing the structured light image data to obtain depth information of the target face;

[0131] S4: Use the ICP point cloud algorithm to generate a point cloud to obtain a three-dimensional point cloud model;

[0132] S5: Perform global fusion and surface reconstruction on the 3D point cloud model by using an implicit function method to obtain a 3D surface model;

[0133] S6: smoothing and optimizing the three-dimensional surface model by using the l...

Embodiment 2

[0165] This embodiment is a further description of Embodiment 1.

[0166] S1: Calibrate the target image by using a ring-type double-center calibration plate, and calibrate the camera parameters and image plane space parameters;

[0167] Such as figure 2 and image 3 As shown, the present invention uses the target image of the high-precision circular double-center calibration plate under the set attitude in the measurement space to realize the precise calculation of camera parameters and system parameters. The method improves the calibration accuracy. Calibration parameters are stored in hardware memory such as flash, and the application software starts and establishes a communication connection with the camera to read the calibration parameters into the memory.

[0168] The calibration process of the stripe structured light 3D modeling system is mainly completed through the following three steps:

[0169] Step 1: Calibrate the internal and external parameters of the came...

Embodiment 3

[0325] A non-sensing three-dimensional face acquisition and reconstruction system includes a cloud server and an acquisition device.

[0326] Described cloud server can carry out a kind of senseless three-dimensional face reconstruction method described in embodiment 1 and 2;

[0327] Such as Figure 8 As shown, the collection device includes a front collection unit 1 , a side collection unit 2 , a communication module, a support column 4 , a base 3 and a switch 5 .

[0328] The communication module communicates with the cloud server, and is used to send the collected image data to the cloud server for processing.

[0329] The base 3 is provided with a controller, a cooling module and a communication module; the cooling module is used to cool down the controller; the communication module is used to exchange data with external devices. At the same time, at least three adjustable rubber foot pads 11 are provided under the base 3 for supporting the system.

[0330] The switch ...

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Abstract

The invention relates to the field of face image processing, in particular to a non-inductive three-dimensional face reconstruction method and an acquisition reconstruction system. According to the reconstruction method provided by the invention, a circular ring type double-circle-center calibration plate is used for calibration, an implicit function method is used for global fusion and curved surface reconstruction, and the three-dimensional curved surface model is subjected to smooth processing and optimization, so that the precision of a final output image is greatly improved, and the requirement on equipment is also reduced. Meanwhile, a three-stand-column type instrument structure is adopted, installation is convenient, the size of the instrument is reduced, the stability of the instrument is improved, the designed structure is simpler and more convenient through modularization, rapid production is facilitated, and the cost is greatly reduced; according to the invention, the target human face is acquired through the three acquisition units, and fine matching of homonymous points is realized, so that the resolution of a three-dimensional object is increased, the reconstructionprecision of three-dimensional data is improved, and the speed of human face acquisition and three-dimensional reconstruction is also improved.

Description

technical field [0001] The invention relates to the field of face image processing, in particular to a non-sensing three-dimensional face reconstruction method and a collection and reconstruction system. Background technique [0002] In the existing 3D face acquisition and recognition technology, optical reconstruction is further divided into passive optical reconstruction and active optical reconstruction. Passive optical reconstruction is divided into binocular stereo vision reconstruction and multi-eye stereo vision reconstruction; active optical reconstruction is divided into TOF scheme and structured light scheme. Among them, the TOF scheme uses the time-of-flight method to directly obtain 3D surface reconstruction by measuring the depth information of the face at a certain distance. The 3D reconstruction technology based on structured light projects certain regular coded light on the object, and the structured light projection performs synchronous scanning imaging, an...

Claims

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Application Information

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IPC IPC(8): G06T17/00G06T15/04G06T7/80G06T7/33G06T7/55
CPCG06T17/005G06T15/04G06T7/80G06T7/33G06T7/55G06T2200/08G06T2207/10028G06T2207/30201G06T2207/30208
Inventor 吕坤郭燕琼荆海龙
Owner WISESOFT CO LTD
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