imgutils

Documentation

Index

• func ResizeKeepAspectRatio(input io.Reader, multiplier float64, output string) (string, error)
• type MedianCutQuantizer
  • func (q *MedianCutQuantizer) Quantize(dst *image.Paletted, r image.Rectangle, src image.Image, sp image.Point)

Functions

func ResizeKeepAspectRatio

func ResizeKeepAspectRatio(input io.Reader, multiplier float64, output string) (string, error)

Types

type MedianCutQuantizer

type MedianCutQuantizer struct {
	NumColor int
}

MedianCutQuantizer constructs a palette with a maximum of NumColor colors by iteratively splitting clusters of color points mapped on a three-dimensional (RGB) Euclidian space. Once the number of clusters is within the specified bounds, the resulting color is computed by averaging those within each grouping.

func (*MedianCutQuantizer) Quantize

func (q *MedianCutQuantizer) Quantize(dst *image.Paletted, r image.Rectangle, src image.Image, sp image.Point)