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A method of inducing brain activity to reconstruct facial image

A face image and brain technology, applied in the information field, can solve the problem that subjective perceptual information has not been used for neural reconstruction

Pending Publication Date: 2019-08-02
KUNMING UNIV OF SCI & TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

However, subjective perceptual information has not been used as the main basis for neural reconstruction of higher cortical areas

Method used

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  • A method of inducing brain activity to reconstruct facial image

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Embodiment 1

[0015] Example 1: Such as figure 1 As shown, a method for inducing brain activity to reconstruct a facial image, the method steps are as follows:

[0016] S1. Collect n facial images describing different human faces, and perform PCA on the n facial images describing different human faces to obtain characteristic faces; among them, the n facial images have the same size, and the facial images have eye and mouth features;

[0017] S2. Select a test image from the face image in step S1. After the tester uses functional magnetic resonance to perform high-resolution scanning when viewing the test image, the tester uses the T2* weighted 2D gradient echo sequence with repetition time to obtain the functional image, Structural image; sequentially perform slice timing and head movement correction on the functional image to obtain the preprocessed functional image; record the structural image on the preprocessed functional image to obtain the fused functional image; then normalize the fused ...

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Abstract

The invention discloses a method for inducing brain activity to reconstruct a face image. The method comprises the following steps: carrying out PCA on n face images describing different faces to obtain a feature face; selecting a test image from the face image, performing high-resolution scanning by utilizing functional magnetic resonance when a tester watches the test image, and obtaining a functional image and a structure image by utilizing a T2 * weighted 2D gradient echo sequence with repetition time; sequentially performing slicing timing and head motion correction on the functional image; recording the structure image to a preprocessing function image; performing normalization processing on the fused functional image; re-sampling the normalized functional image to 3 cubic millimeters of voxels; mapping the brain activity to the feature face by using a partial least squares regression method, and outputting a prediction matrix of the brain activity; reconstructing an image by generating a weight matrix defined when a feature face is generated and a prediction matrix of brain activity. The method can be effectively used for realizing reconstruction of the test image of the tester.

Description

Technical field [0001] The invention relates to a method for inducing brain activity to reconstruct a facial image, and belongs to the field of information technology. Background technique [0002] Recent advances in neuroimaging have allowed visual experience to be reconstructed from brain activity patterns. Although neural reconstructions differ in complexity, they are almost entirely dependent on the retinal mapping between visual input and early visual cortex activity. However, subjective sensory information has not been used as the main basis for neural reconstruction in higher cortical areas. Summary of the invention [0003] The present invention provides a method for inducing brain activity to reconstruct a facial image, so as to reconstruct an image tested by a tester through the method. [0004] The technical scheme of the present invention is: a method for inducing brain activity to reconstruct facial images, the method steps are as follows: [0005] S1. Collect n facial...

Claims

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Application Information

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IPC IPC(8): G06T17/00G06K9/62G06K9/00
CPCG06T17/00G06V40/168G06V40/193G06F18/2135G06F18/214
Inventor 伏云发李昭阳王文乐周洲州陈睿李玉熊馨
Owner KUNMING UNIV OF SCI & TECH
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