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Three-dimensional face rapid-rebuilding method based on compressed sensing theory

A 3D face and compressed sensing technology, applied in the field of image processing, can solve the problems of not considering the reconstruction result, reconstruction result deviation, influence, etc., and achieve the effect of improving reconstruction efficiency, reducing reconstruction time, and improving reconstruction accuracy

Active Publication Date: 2013-11-27
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0004] The difference between different facial shapes may be very large, and the current 3D face reconstruction method is generally based on the idea of ​​linear class, which treats all face samples as the same class, and does not take into account the samples in the training sample library and the test data. The possible impact of sample variability on the reconstruction results
For face test samples, if there are multiple training samples with large differences in shape in the sample library, it will obviously lead to deviations in the reconstruction results

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  • Three-dimensional face rapid-rebuilding method based on compressed sensing theory
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[0026] Below in conjunction with accompanying drawing, the technical scheme of invention is described in detail:

[0027] like figure 1 As shown, the 3D face reconstruction method based on compressive sensing theory includes the following steps.

[0028] Step 1: Initialize the 3D face sample library, build a 2D face sample library, and collect 2D image feature points for calibration: the standardization of the 3D face sample library is to realize the correction of the face pose in the sample library, the 3D face point set Resampling and point correspondence; the two-dimensional sample library can be obtained from the three-dimensional face sample library according to the method of orthogonal projection; the calibration of the input two-dimensional image feature points can be manually calibrated or automatically determined, and the two-dimensional facial feature points Corresponding feature points exist in the three-dimensional model.

[0029] Assuming that the two-dimensiona...

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Abstract

The invention discloses a three-dimensional face rapid-rebuilding method based on the compressed sensing theory, and belongs to the technical field of image processing. The three-dimensional face rapid-rebuilding method enables the compressed sensing theory to be introduced into a linear combination of samples, training samples having high similarity with a tested sample are screened out, and a sample library is simplified. By carrying out rebuilding on the similar samples, the rebuilding speed is increased, and rebuilding accuracy is improved.

Description

technical field [0001] The invention discloses a three-dimensional human face fast reconstruction method based on compressed sensing theory, which belongs to the technical field of image processing. Background technique [0002] In recent years, due to the continuous development of pattern recognition and computer vision technology, face-based applications have gradually emerged. With the gradual commercialization of applications such as face detection and face recognition, people have realized that people expressed in two-dimensional pictures Face information is generally constrained by conditions such as illumination and pose in actual processing. Therefore, the research on human face has gradually shifted from two-dimensional plane to three-dimensional space. As the preprocessing part of 3D face data, the acquisition of traditional 3D information usually adopts direct scanning, which requires expensive hardware conditions and the close cooperation of participants. The 3...

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Application Information

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IPC IPC(8): G06T17/00G06K9/62
Inventor 周大可吴子扬杨欣曹元鹏方三勇
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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