MATLAB中imfilter和fspecial函数用法

1、imfilter

• N-D filtering of multidimensional image

• B = imfilter(A,h)

  B = imfilter(A,h,options,...)
   

  B = imfilter(A,h) filters the multidimensional array A with the multidimensional filter h and returns the result in B.

  You optionally can filter a multidimensional array with a 2-D filter using a GPU (requires Parallel Computing Toolbox™). For more information, see Image Processing on a GPU. 
  B = imfilter(A,h,options,...) performs multidimensional filtering according to one or more specified options.
   

  parameters

  A— Image to be filtered numeric array	Image to be filtered, specified as a numeric array of any class and dimension. Data Types: single | double | int8 | int16 | int32 | uint8 | uint16 | uint32 | logica
  h— Multidimensional filter N-D array of data type double	Multidimensional filter, specified as an N-D array of data type double. To perform the image filtering using a GPU, specify h as a vector or 2-D matrix of data type double. Data Types: double 扫描二维码关注公众号，回复： 5749114 查看本文章
  options — Options that control the filtering operation character vector | string scalar | numeric scalar	Options that control the filtering operation, specified as a character vector, string scalar, or numeric scalar. The following table lists all supported options.
  B—Output Arguments numeric array	Filtered image, returned as a numeric array of the same size and class as the input image, A.