54、面部反欺骗与微表情检测技术解析

面部反欺骗与微表情检测技术解析

1. 面部反欺骗技术

1.1 特征提取与嵌入结构

特征提取器和嵌入器在面部反欺骗模型中起着关键作用。以下是它们的结构详情：
| Feature Extracter | | | Feature Embedder | | |
| — | — | — | — | — | — |
| Layer | Chan./Stri. | Out.Size | Layer | Chan./Stri. | Out.Size |
| Input | | | Input | | |
| image | | | pool1 - 3 | | |
| conv1 - 1 | 64/1 | 256 | conv2 - 1 | 128/1 | 32 |
| conv1 - 2 | 128/1 | 256 | pool2 - 1 | -/2 | 16 |
| conv1 - 3 | 196/1 | 256 | conv2 - 2 | 256/1 | 16 |
| conv1 - 4 | 128/1 | 256 | pool2 - 2 | -/2 | 8 |
| pool1 - 1 | -/2 | 128 | conv2 - 2 | 512/1 | 8 |
| conv1 - 5 | 128/1 | 128 | avg pooling | | |
| conv1 - 6 | 196/1 | 128 | fc2 - 1 | 1/1 | 1 |
| conv1 - 7 | 128/1 | 128 | | | |
| pool1 - 2 | -/2 | 64 | | |