ground-truthCOCA³¹⁵¹¹¹⁺⁴ 基本例句 un.地面实况调查；地面实况资料；🌏地面校正；人工标注 The effective unsupervised change- detection method is fundamental in many applications in that the suitable ground-truth information is not always available. 由于先验知识并不是很容易获得的，所以在许多实际应用中非监督图象变化检测方法是一种基本方法。 cnki