Method: Vips::Image.mask_ideal_ring

Defined in:

lib/vips8/methods.rb

.mask_ideal_ring(width, height, frequency_cutoff, ringwidth, opts = {}) ⇒ Vips::Image

Make an ideal ring filter.

Parameters:

• width (Integer) —

  Image width in pixels

• height (Integer) —

  Image height in pixels

• frequency_cutoff (Float) —

  Frequency cutoff

• ringwidth (Float) —

  Ringwidth

• opts (Hash) (defaults to: {}) —

  Set of options

Options Hash (opts):

• :uchar (Boolean) —

  Output an unsigned char image

• :nodc (Boolean) —

  Remove DC component

• :reject (Boolean) —

  Invert the sense of the filter

• :optical (Boolean) —

  Rotate quadrants to optical space

Returns:

• (Vips::Image) —

  Output image

# File 'lib/vips8/methods.rb', line 639