Method

VipsImagerecomb

Declaration [src] 

int
vips_recomb (
  VipsImage* in,
  VipsImage** out,
  VipsImage* m,
  ...
)

Description [src]

This operation recombines an image’s bands. Each pixel in in is treated as an n-element vector, where n is the number of bands in in, and multiplied by the n x m matrix m to produce the m-band image out.

out is always float, unless in is double, in which case out is double too. No complex images allowed.

It’s useful for various sorts of colour space conversions.

See also

vips_bandmean().

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.
m

Type: VipsImage

Recombination matrix.

The data is owned by the caller of the method.
...

Type: 

NULL-terminated list of optional named arguments.

Return value

Type: int

0 on success, -1 on error.