Method

VipsImagespectrum

Declaration [src] 

int
vips_spectrum (
  VipsImage* in,
  VipsImage** out,
  ...
)

Description [src]

Make a displayable (ie. 8-bit unsigned int) power spectrum.

If in is non-complex, it is transformed to Fourier space. Then the absolute value is passed through vips_scale() in log mode, and vips_wrap().

See also: vips_fwfft(), vips_scale(), vips_wrap().

This method is not directly available to language bindings.

Parameters

out

Type: VipsImage

Output image.

The argument will be set by the function.
The caller of the method takes ownership of the returned data, and is responsible for freeing it.
...

Type: 

NULL-terminated list of optional named arguments.

Return value

Type: int

0 on success, -1 on error.