OPR工具的人脸区域增强功能针对老照片中常见的人脸模糊问题开发了专业化解决方案。该功能采用级联神经网络架构，包含人脸检测、关键点定位和细节增强三个处理阶段。
此项功能的技术优势体现在：1) 使用68个特征点精确定位面部结构 2) 采用注意力机制强化眼、嘴等关键部位 3) 通过超分辨率重建提升五官清晰度。与普通修复软件相比，它能够更好地恢复表情细节和皮肤纹理。
实际应用中，该系统自动识别人脸区域后，会进行针对性处理。典型案例显示，经过增强的人脸图像其PSNR指标可提升6-8dB，显著改善视觉观感。该功能对家族老照片修复具有特殊价值。
This answer comes from the articleOPR: the AI tool that intelligently restores yellowed, worn-out old photosThe
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