class ImageVise::Sharpen

Applies a sharpening filter to the image.

The corresponding Pipeline method is `sharpen`.

Public Class Methods

new(*) click to toggle source
Calls superclass method
# File lib/image_vise/operators/sharpen.rb, line 5
def initialize(*)
  super
  self.radius = radius.to_f
  self.sigma = sigma.to_f
  raise ArgumentError, ":radius must positive" unless sigma > 0
  raise ArgumentError, ":sigma must positive" unless sigma > 0
end

Public Instance Methods

apply!(magick_image) click to toggle source
# File lib/image_vise/operators/sharpen.rb, line 13
def apply!(magick_image)
  sharpened_image = magick_image.sharpen(radius, sigma)
  magick_image.composite!(sharpened_image, Magick::CenterGravity, Magick::CopyCompositeOp)
ensure
  ImageVise.destroy(sharpened_image)
end