threshold

Documentation

Index

• func OtsuThreshold(img *image.Gray, method Method) (*image.Gray, error)
• func Threshold(img *image.Gray, t uint8, method Method) (*image.Gray, error)
• func Threshold16(img *image.Gray16, t uint16, method Method) (*image.Gray16, error)
• type Method

Functions

func OtsuThreshold

func OtsuThreshold(img *image.Gray, method Method) (*image.Gray, error)

OtsuThreshold returns a grayscale image which was segmented using Otsu's adaptive thresholding method. Methods: ThreshBinary, ThreshBinaryInv, ThreshTrunc, ThreshToZero, ThreshToZeroInv More info about Otsu's method: https://en.wikipedia.org/wiki/Otsu%27s_method

func Threshold

func Threshold(img *image.Gray, t uint8, method Method) (*image.Gray, error)

Threshold returns a 8 bit grayscale image as result which was segmented using one of the following methods: ThreshBinary, ThreshBinaryInv, ThreshTrunc, ThreshToZero, ThreshToZeroInv

func Threshold16

func Threshold16(img *image.Gray16, t uint16, method Method) (*image.Gray16, error)

Threshold16 returns a grayscale image represented on 16 bits as result which was segmented using one of the following Methods: ThreshBinary, ThreshBinaryInv, ThreshTrunc, ThreshToZero, ThreshToZeroInv

Types

type Method

type Method int

Method is an enum type for global threshold methods

const (
	// ThreshBinary
	//				 _
	//				| maxVal if src(x, y) > thresh
	// dst(x, y) =	|
	//				| 0 otherwise
	//				|_
	ThreshBinary Method = iota
	// ThreshBinaryInv
	//				 _
	//				| 0 if src(x, y) > thresh
	// dst(x, y) =	|
	//				| maxVal otherwise
	//				|_
	ThreshBinaryInv
	// ThreshTrunc
	//				 _
	//				| thresh if src(x, y) > thresh
	// dst(x, y) =	|
	//				| src(x, y) otherwise
	//				|_
	ThreshTrunc
	// ThreshToZero
	//				 _
	//				| src(x, y) if src(x, y) > thresh
	// dst(x, y) =	|
	//				| 0 otherwise
	//				|_
	ThreshToZero
	// ThreshToZeroInv
	//				 _
	//				| 0 if src(x, y) > thresh
	// dst(x, y) =	|
	//				| src(x, y) otherwise
	//				|_
	ThreshToZeroInv
)