class Pluto::GrayscaleImage

• Pluto::GrayscaleImage
• Pluto::Image
• Reference
• Object

Included Modules

• Pluto::Format::JPEG
• Pluto::Format::PNG
• Pluto::Format::PPM
• Pluto::Format::WebP
• Pluto::Operation::BilinearResize
• Pluto::Operation::BoxBlur
• Pluto::Operation::Brightness
• Pluto::Operation::ChannelSwap
• Pluto::Operation::Contrast
• Pluto::Operation::Crop
• Pluto::Operation::GaussianBlur
• Pluto::Operation::HorizontalBlur
• Pluto::Operation::VerticalBlur

Defined in:

Constructors

• .from_jpeg(image_data : Bytes) : self

  This is the preferred, most performant JPEG overload with the least memory consumption.

• .from_jpeg(io : IO) : self

  This is a less preferred JPEG overload.

• .from_png(image_data : Bytes) : self

  This is the preferred, most performant PNG overload with the least memory consumption.

• .from_png(io : IO) : self

  This is a less preferred PNG overload.

• .from_ppm(image_data : Bytes) : self
• .from_ppm(io : IO) : self
• .from_webp(image_data : Bytes) : self

  This is the preferred, most performant WebP overload with the least memory consumption.

• .from_webp(io : IO) : self

  This is a less preferred WebP overload.

• .new(red : Array(UInt8), green : Array(UInt8), blue : Array(UInt8), alpha : Array(UInt8), width : Int32, height : Int32)
• .new(gray : Array(UInt8), alpha : Array(UInt8), width : Int32, height : Int32)

Instance Method Summary

• #[](channel_type : ChannelType) : Array(UInt8)
• #[]=(channel_type : ChannelType, channel : Array(UInt8)) : Array(UInt8)
• #alpha : Array(UInt8)
• #alpha=(alpha : Array(UInt8))
• #blue : Array(UInt8)
• #clone : GrayscaleImage
• #each_channel(& : Array(UInt8), ChannelType -> Nil) : Nil
• #gray : Array(UInt8)
• #gray=(gray : Array(UInt8))
• #green : Array(UInt8)
• #height : Int32
• #height=(height : Int32)
• #red : Array(UInt8)
• #to_rgba : RGBAImage
• #width : Int32
• #width=(width : Int32)

Constructor Detail

Instance Method Detail