filmgrain

Documentation

Index

• func CreatePhotonNoiseTable(width, height int, iso float64, transferFunction *TransferFunction) ([]byte, error)
• type TransferFunction
  • func GetTransferFunction(kind string) *TransferFunction

Functions

func CreatePhotonNoiseTable

func CreatePhotonNoiseTable(width, height int, iso float64, transferFunction *TransferFunction) ([]byte, error)

Types

type TransferFunction

type TransferFunction struct {
	ToLinear   func(in float64) (linear float64)
	FromLinear func(linear float64) (out float64)

	// MidTone In linear output light. This would typically be 0.18 for SDR (this matches
	// the definition of Standard Output Sensitivity from ISO 12232:2019), but in
	// HDR, we certainly do not want to consider 18% of the maximum output a
	// “mid-tone”, as it would be e.g. 1800 cd/m² for SMPTE ST 2084 (PQ).
	MidTone float64
}

func GetTransferFunction

func GetTransferFunction(kind string) *TransferFunction