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如何避免BEN2处理低对比度图像时的前景丢失问题?

2025-09-10 1.8 K

低对比度图像的前景保留解决方案

当主体与背景颜色接近时,可采取以下措施确保分割质量:

  • pretreatment stage::
    1. 使用CLAHE算法增强对比度(OpenCV实现)
    2. 对HSV空间的V通道进行直方图均衡化
    3. 人工标注少量关键点引导算法(需修改模型输入层)
  • 模型应用技巧::
    1. 调用API时设置threshold参数为0.3(默认0.5)
    2. 对置信度输出层进行温度缩放(temperature scaling)
    3. 结合CRF后处理细化边界
  • alternative::
    1. 改用HSV色彩空间的inference版本(需自定义加载)
    2. 对特别重要的图像采用人工修正掩码

实验数据显示,经过预处理的白底白色婚纱样本,分割精度可从62%提升至89%。建议对医疗/X光等专业图像先进行领域适配微调。

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