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BEN2的CGM技术管道具体如何提升边缘分割精度?

2025-09-10 1.8 K

CGM技术深度解析

Confidence Guided Matting管道的创新性体现在两阶段处理:

  1. 置信度预测阶段:基础网络输出每个像素的前景概率(0-1)和置信度评分(0-100%)
  2. 自适应精细化阶段:对置信度<90%的像素区域(通常存在于发丝/玻璃边缘),启用特殊设计的U-Net结构进行亚像素级修正,该网络包含:
    • 扩张卷积层(捕获多尺度特征)
    • 注意力机制模块(强化边缘响应)
    • 残差连接(保持原始色彩信息)

技术白皮书显示,CGM使Jaccard指数在DIS5k测试集上提升9.2%,尤其是在动物毛发(提升14.7%)和透明物体(提升18.3%)场景表现突出。

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