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A three-dimensional face modeling method and system without phase unwrapping

A technology of three-dimensional face and phase unwrapping, applied in the field of computer vision, can solve problems such as unfavorable three-face measurement, unfavorable large-scale promotion and application, and increased cost, so as to reduce the number of projected and photographed structured light fields, improve hardware performance, The effect of ensuring modeling accuracy

Active Publication Date: 2022-08-09
WISESOFT CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current situation that the temporal phase unwrapping method needs to increase the number of modeling images is not conducive to three-face measurement
In the case of keeping the acquisition time of modeling images unchanged, this contradiction can also be alleviated by improving hardware performance, but this means an increase in cost, which is not conducive to large-scale promotion and application

Method used

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  • A three-dimensional face modeling method and system without phase unwrapping
  • A three-dimensional face modeling method and system without phase unwrapping
  • A three-dimensional face modeling method and system without phase unwrapping

Examples

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Embodiment 1

[0034]The modeling system of this embodiment mainly includes: a modeling control module, a stroboscopic streak structured light projection device and a camera (the number of cameras is greater than or equal to two, so as to collect multi-angle images) connected in communication with the modeling control module, The modeling control module is used to control the coordinated workflow of the stroboscopic striped structured light projection device and the camera, so that the system can implement the three-dimensional face modeling method.

[0035] The modeling control module controls the stroboscopic stripe structured light projection device to perform projection output by sending a control signal or an enabling signal to the stroboscopic stripe structured light projection device, which can coordinate the workflow of the 3D face modeling system, and is based on the camera. 3D face modeling is done with the images sent from here. And the modeling control module is a kind of control...

Embodiment 2

[0050] A three-dimensional face modeling method and system without phase unwrapping figure 1 As shown, it includes a striped structured light projection device 100 with a near-infrared one-dimensional scanning galvanometer as a core component, a left infrared camera 201 , a right infrared camera 202 , and a modeling control module 400 . The frequency pattern structured light projection device 100 projects N (N≧3) sinusoidal fringe structured light field sequences 300 with an adjustable number of images onto the face surface, and simultaneously outputs synchronous control signals to the near-infrared cameras 201-202; The near-infrared cameras 201-202 work in the external trigger state, and under the control of the synchronous control signal output by the stroboscopic stripe structured light projection device 100, the surface of the human face illuminated by the sinusoidal stripe structured light field 300 is captured as a modeling image and sent to the imager. The modeling cont...

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Abstract

The invention discloses a three-dimensional face modeling method and system without phase unwrapping. The method uses the phase information contained in the multi-frame striped structured light field to mark the target face surface, and the multi-frame face texture captured by the camera is used. The feature points of the face are extracted from the figure and the constraints of face geometric information are generated. The geometric information of the face is used to constrain the process of binocular stereo matching, and the truncated phase is directly used instead of the absolute phase for stereo matching to calculate the disparity map. The stereo matching method of phase unwrapping obtains a high-precision and high-reliability disparity map, and then reconstructs a three-dimensional face model. The present invention does not need to project additional projection and photograph additional structured light fields to assist phase unwrapping, effectively reduces the number of projected and photographed structured light fields required for three-dimensional face modeling, shortens modeling image acquisition time, and effectively ensures modeling accuracy.

Description

technical field [0001] The invention relates to the technical field of computer vision, in particular to a three-dimensional face modeling method and system without phase unwrapping. Background technique [0002] The use of digital images to reconstruct the three-dimensional surface shape of objects is a long-term research focus of computer vision. In recent years, 3D face modeling technology has developed rapidly, and realistic 3D face models have broad application prospects in many fields such as film and television, games, education, virtual reality, plastic surgery, identity authentication, and 3D printing. In recent years, public security and information security have become major areas related to the national economy and people's livelihood. Biometric recognition technology has developed rapidly in recent years. Face recognition technology has attracted widespread attention because of its wide adaptability to scenarios and non-contact characteristics. However, the trad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/00G06T15/04G06V40/16
Inventor 荆海龙朱江平傅可人熊伟陈虎
Owner WISESOFT CO LTD
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