Method

VipsImagehist_find

Declaration [src] 

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

Description [src]

Find the histogram of in. Find the histogram for band band (producing a one-band histogram), or for all bands (producing an n-band histogram) if band is -1.

char and uchar images are cast to uchar before histogramming, all other image types are cast to ushort.

Optional arguments

  • band: gint, band to equalise

See also

vips_hist_find_ndim(), vips_hist_find_indexed().

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.