stddevfilter¶
Syntax: stddevfilter(input image, output image, radius, neighbourhood type, boundary condition)
Standard deviation filter. Replaces pixel by standard deviation of pixels in its neighbourhood. For accurate results, use on images with floating point data type. Has optimized implementation for rectangular neighbourhoods.
This command can be used in the distributed processing mode. Use distribute command to change processing mode from local to distributed.
Arguments¶
input image [input]¶
Data type: uint8 image, uint16 image, uint32 image, uint64 image, int8 image, int16 image, int32 image, int64 image, float32 image
Input image.
output image [output]¶
Data type: uint8 image, uint16 image, uint32 image, uint64 image, int8 image, int16 image, int32 image, int64 image, float32 image
Output image.
radius [input]¶
Data type: 3-component integer vector
Default value: “[1, 1, 1]”
Radius of neighbourhood. Diameter will be \(2r+1\).
neighbourhood type [input]¶
Data type: neighbourhood type
Default value: Ellipsoidal
Type of neighbourhood. Can be Ellipsoidal for ellipsoidal or spherical neighbourhood; or Rectangular for rectangular neighbourhood.
boundary condition [input]¶
Data type: boundary condition
Default value: Nearest
Type of boundary condition. Zero indicates that values outside of image bounds are taken to be zero. Nearest indicates that the nearest value inside the image is to be used in place of values outside of image bounds.