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人 脸对齐技术. [email protected] 4/3/2014. detect => align => represent => classify 9-layer deep NN 120 million parameters 4 million images, 4000 identities 97.25%. 大纲. 什么是人脸对齐? 人 脸对齐的应用 - 人脸识别、表情识别、人脸动画、人脸姿态估计、视线跟踪、嘴唇跟踪、 人脸高分辨率重建、疲劳检测、人机交互、特效 ( 比如 ” 换脸 ” 、 Morphing) 等 人 脸对齐技术及其数学原理

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人 脸对齐技术

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6479357

人脸对齐技术

[email protected]

4/3/2014


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detect => align => represent => classify

9-layer deep NN

120 million parameters

4 million images, 4000 identities

97.25%


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大纲

  • 什么是人脸对齐?

  • 人脸对齐的应用

    - 人脸识别、表情识别、人脸动画、人脸姿态估计、视线跟踪、嘴唇跟踪、 人脸高分辨率重建、疲劳检测、人机交互、特效(比如”换脸”、Morphing)等

  • 人脸对齐技术及其数学原理

    - Active Contour Models (Snakes)

    - Active Shape Models

    - Active Appearance Models (2D、3D…)


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大纲

  • 什么是人脸对齐?

  • 人脸对齐的应用

    - 人脸识别、表情识别、人脸动画、人脸姿态估计、视线跟踪、嘴唇跟踪、 人脸高分辨率重建、疲劳检测、人机交互、特效(比如”换脸”、Morphing)等

  • 人脸对齐技术及其数学原理

    - Active Contour Models (Snakes)

    - Active Shape Models

    - Active Appearance Models (2D、3D…)


Face detection

人脸检测 (Face Detection)


Face recognition

人脸识别 (Face Recognition)


Face alignment

人脸对齐 (Face Alignment)


Registration

图像配准 (Registration)


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大纲

  • 什么是人脸对齐?

  • 人脸对齐的应用

    - 人脸识别、表情识别、人脸动画、人脸姿态估计、视线跟踪、嘴唇跟踪、 人脸高分辨率重建、疲劳检测、人机交互、特效(比如”换脸”、Morphing)等

  • 人脸对齐技术及其数学原理

    - Active Contour Models (Snakes)

    - Active Shape Models

    - Active Appearance Models (2D、3D…)


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人脸对齐的应用

  • 具体见Demos


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大纲

  • 什么是人脸对齐?

  • 人脸对齐的应用

    - 人脸识别、表情识别、人脸动画、人脸姿态估计、视线跟踪、嘴唇跟踪、 人脸高分辨率重建、疲劳检测、人机交互、特效(比如”换脸”、Morphing)等

  • 人脸对齐技术及其数学原理

    - Active Contour Models (Snakes)

    - Active Shape Models

    - Active Appearance Models (2D、3D…)


Photoshop

Photoshop “套圈”


Acm snakes

ACM (Snakes)


Internal energy

Internal Energy


Image forces

Image Forces


Image forces cont

Image Forces (cont.)


Image forces cont1

Image Forces (cont.)


Acm snakes1

ACM (Snakes)

  • 对形状没有太多约束;

  • 没有使用纹理信息。

  • 人脸形状大致固定;

  • 人脸器官以及人脸形状边缘有明显的纹理变化。


Asm applications

ASM Applications


Shape training

Shape Training


Labeling the training set

Labeling the Training Set


Alignment

Alignment


Alignment cont

Alignment (cont.)


Aligned shape statistics

Aligned Shape Statistics


Face examples

Face Examples


Asm algorithm

ASM Algorithm


Adjusting model points

Adjusting Model Points


Examples

Examples


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ASM

  • 有2D形状模型;

  • 少量的纹理信息。

  • 怎样使用整个人脸区域内部的纹理?


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PCA

Building Active Appearance Models

Warped

PCA

RI, CMU


Model instantiation

Model Instantiation


Active appearance models

Active Appearance Models


Aam 2d

AAM (2D)

  • 有2D形状模型;

  • 使用了整个人脸区域的纹理信息。

  • 3D人脸形状成像时有约束。


3d morphable models

3D Morphable Models


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AnExample


Fitting with 3d shape constraints

Fitting with 3D Shape Constraints

AAM

K→ +∞

Parameters:

3D Shape

Constraints


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小结

  • 什么是人脸对齐?

  • 人脸对齐的应用

    - 人脸识别、表情识别、人脸动画、人脸姿态估计、视线跟踪、嘴唇跟踪、 人脸高分辨率重建、疲劳检测、人机交互、特效(比如”换脸”、Morphing)等

  • 人脸对齐技术及其数学原理

    - Active Contour Models (Snakes)

    - Active Shape Models

    - Active Appearance Models (2D、3D…)


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Thank You!


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