channel

package

v0.13.0 Latest Latest Go to latest Published: Aug 23, 2020 License: MIT Imports: 4 Imported by: 4

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Package channel provides image channel separation and manipulation functions.

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const (
	Red = iota
	Green
	Blue
	Alpha
)

Channel identifiers

This section is empty.

func Extract(img image.Image, c Channel) *image.Gray

Extract returns a grayscale image containing the values of the selected channel.

Usage example:

result := channel.Extract(img, channel.Alpha)

func ExtractMultiple(img image.Image, channels ...Channel) *image.RGBA

ExtractMultiple returns a RGBA image containing the values of the selected channels.

Usage example:

result := channel.ExtractMultiple(img, channel.Blue, channel.Alpha)

type Channel int

Channel identifier for RGBA images