缺陷分割:孔隙率怎么算才可复现
阈值 ±5% → 孔隙率 ×2
Why this chapter
同一份 CT 数据,阈值调 5%,孔隙率能翻倍。分割不是“看着差不多”,而是阈值、连通域、最小尺寸三个参数写清楚,别人才能复现。
ToolsPython · scikit-image
Deliverable分割流水线 + 参数敏感性 + 复现说明
Key numbers| 阈值偏移 5% | 孔隙率 ×1.8–2.2(示意) |
|---|---|
| 最小缺陷尺寸 | 按体素 ≥3³ |
| 复现要求 | 参数 + 版本 + 数据哈希 |
各向异性从哪来:层间粘结的工艺窗口
· Extrusion process-structure-property literature (ASTM/ISO terminology + interlayer bonding studies) · 2012→
阈值一改,孔隙率就翻倍:CT 分割的可复现性
· AM CT round-robin / defect-detection literature (ASTM E3166 practice, ISO/ASTM 52900 terminology) · 2017→
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