SBF算法是傅里叶积分的近似估计,其算法思路是用线性插值函数近似被积函数,将线性插值函数分解为有限多个相似基函数(similar basis function)的线性和,对每个基函数进行傅里叶正弦或余弦积分,其结果可表示为简洁的解析形式,故积分运算可转化成一些相对简单的代数运算。在对图像进行去噪！(The SBF algorithm is to approximate the Fu Liye integral algorithm, the idea is to approximate the integrand with linear interpolation function, the linear interpolation function is decomposed into a finite number of similar basis functions (similar basis function) and linear, Fu Liye sine or cosine integral of each basis function, the result can be expressed as a simple analytical form. The integral operation can be transformed into some relatively simple algebraic operations. In the image denoising!)