差分算子是一种算子，对任一实函数f(x)，若记Δf(x)=f(x+1)-f(x)，则称Δ为向前差分算子，简称差分算子。差分是计算数学的基本概念之一，指离散函数在离散节点上的改变量。
后向差分算子 [数] backward difference operator
有限差分算子 [数] finite difference operator
中心差分算子 [数] central difference operator
反差分算子 inverse difference operator
近似差分算子 [数] approximate difference operator
向后差分算子 [数] backward difference operator
逆差分算子 inverse difference operator
一阶差分算子 [数] first difference operator
相伴差分算子 [数] associated differential operator
前向差分算子 [数] forward-difference operator
此外，本文对傅里叶有限差分算子作了必要的优化。
In addition, Fourier finite difference operator is optimized desirably.
显然，差分算子及其逆算子是阶乘幂多项式的方便工具。
Clearly, the difference operator or sum operator is the convenient tool for the polynomial of factorial powers.
为了实现血细胞图像的自动识别，提出了一种基于差分算子和区域增长的方法。
This paper proposes a new approach based on difference operator and region-growing to automatically recognize cell image.
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