Class: Vips::Kernel

Inherits:

Symbol

• Object
• Symbol
• Vips::Kernel

Defined in:

lib/vips/kernel.rb

Overview

A resizing kernel. One of these can be given to operations like Image#reduceh or Image#resize to select the resizing kernel to use.

At least these should be available:

• :nearest nearest-neighbour interpolation
• :linear linear interpolation
• :cubic cubic interpolation
• :mitchell Mitchell interpolation
• :lanczos2 two-lobe Lanczos
• :lanczos3 three-lobe Lanczos
• :mks2013 convolve with Magic Kernel Sharp 2013
• :mks2021 convolve with Magic Kernel Sharp 2021

For example:

 im = im.resize 3, kernel: :lanczos2