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# F-Score

Tatarchenko等人提出的F-Score是评估物体表面距离的一种方法，被视为精确度和召回率之间的调和平均数。

精确度Precision计算在一定距离内重建点的百分比，代表了重建的准确性\
召回率GroundTrue点在一定距离内重建点的百分比，代表了重建的完整性\
距离阈值d可以用来控制F分数的严格程度\
F分数可以评估被正确重建的点或表面面积的百分比，可以定义如下：

<figure><img src="https://3522718595-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FD1M64ktNsEA8xmIL6eKj%2Fuploads%2FNjoCsWhynJ47Ru41zIGV%2Fimage.png?alt=media&amp;token=6fd0e757-641f-4e4f-a54b-8945b6572978" alt=""><figcaption></figcaption></figure>

P(d)和R(d)表示在阈值d的情况下的精确度（Precision）和召回率（Recall）

<figure><img src="https://3522718595-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FD1M64ktNsEA8xmIL6eKj%2Fuploads%2FL04EygFQ4QeGMLcO2EC4%2Fimage.png?alt=media&amp;token=bdf74540-b7a1-4fef-b194-6793582a6431" alt=""><figcaption></figcaption></figure>