👉 Decidual is a mathematical concept in the field of computational geometry and computer vision. It refers to the intersection between two curves, usually called "lines" or "curves," which are not parallel but have some common point of intersection. In simple terms, deciduals describe how many intersections there are between two lines in a 2D space. The number of deciduals is equal to the curvature (or torsion) of the lines. The term "decidual" comes from the
