Distance transform
（重定向自Distance map）
![](/Images/godic/202501/09/Distance_Transformation2043.gif"){kind=spacer}
A distance transform, also known as distance map or distance field, is a derived representation of a digital image. The choice of the term depends on the point of view on the object in question: whether the initial image is transformed into another representation, or it is simply endowed with an additional map or field.