pigo

package
v1.3.0 Latest Latest
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 Go to latest Published: Oct 15, 2019 License: MIT Imports: 14 Imported by: 85

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Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func GetImage 

func GetImage(input string) (*image.NRGBA, error)

GetImage retrieves and decodes the image file to *image.NRGBA type.

func ImgToNRGBA 

func ImgToNRGBA(img image.Image) *image.NRGBA

ImgToNRGBA converts any image type to *image.NRGBA with min-point at (0, 0).

func RgbToGrayscale 

func RgbToGrayscale(src image.Image) []uint8

RgbToGrayscale converts the image to grayscale mode.

Types

type CascadeParams 

type CascadeParams struct {
	MinSize     int
	MaxSize     int
	ShiftFactor float64
	ScaleFactor float64
	ImageParams
}

CascadeParams contains the basic parameters to run the analyzer function over the defined image. MinSize: represents the minimum size of the face. MaxSize: represents the maximum size of the face. ShiftFactor: determines to what percentage to move the detection window over its size. ScaleFactor: defines in percentage the resize value of the detection window when moving to a higher scale.

type Detection 

type Detection struct {
	Row   int
	Col   int
	Scale int
	Q     float32
}

Detection struct contains the detection results composed of the row, column, scale factor and the detection score.

type FlpCascade added in v1.3.0 

type FlpCascade struct {
	*PuplocCascade
	// contains filtered or unexported fields
}

FlpCascade holds the binary representation of the facial landmark points cascade files

type ImageParams 

type ImageParams struct {
	Pixels []uint8
	Rows   int
	Cols   int
	Dim    int
}

ImageParams is a struct for image related settings. Pixels: contains the grayscale converted image pixel data. Rows: the number of image rows. Cols: the number of image columns. Dim: the image dimension.

type Pigo 

type Pigo struct {
	// contains filtered or unexported fields
}

Pigo struct defines the basic binary tree components.

func NewPigo 

func NewPigo() *Pigo

NewPigo initializes the Pigo constructor method.

func (*Pigo) ClusterDetections 

func (pg *Pigo) ClusterDetections(detections []Detection, iouThreshold float64) []Detection

ClusterDetections returns the intersection over union of multiple clusters. We need to make this comparison to filter out multiple face detection regions.

func (*Pigo) RunCascade 

func (pg *Pigo) RunCascade(cp CascadeParams, angle float64) []Detection

RunCascade analyze the grayscale converted image pixel data and run the classification function over the detection window. It will return a slice containing the detection row, column, it's center and the detection score (in case this is greater than 0.0).

func (*Pigo) Unpack 

func (pg *Pigo) Unpack(packet []byte) (*Pigo, error)

Unpack unpack the binary face classification file.

type Puploc added in v1.2.0 

type Puploc struct {
	Row      int
	Col      int
	Scale    float32
	Perturbs int
}

Puploc contains all the information resulted from the pupil detection needed for accessing from a global scope.

type PuplocCascade added in v1.2.0 

type PuplocCascade struct {
	// contains filtered or unexported fields
}

PuplocCascade is a general struct for storing the cascade tree values encoded into the binary file.

func NewPuplocCascade added in v1.3.0 

func NewPuplocCascade() *PuplocCascade

NewPuplocCascade initializes the PuplocCascade constructor method.

func (*PuplocCascade) FindLandmarkPoints added in v1.3.0 

func (plc *PuplocCascade) FindLandmarkPoints(leftEye, rightEye *Puploc, img ImageParams, perturb int, flipV bool) *Puploc

FindLandmarkPoints detects the facial landmark points based on the pupil localization results.

func (*PuplocCascade) ReadCascadeDir added in v1.3.0 

func (plc *PuplocCascade) ReadCascadeDir(path string) (map[string][]*FlpCascade, error)

ReadCascadeDir reads the facial landmark points cascade files from the provided directory.

func (*PuplocCascade) RunDetector added in v1.2.0 

func (plc *PuplocCascade) RunDetector(pl Puploc, img ImageParams, angle float64, flipV bool) *Puploc

RunDetector runs the pupil localization function.

func (*PuplocCascade) UnpackCascade added in v1.2.0 

func (plc *PuplocCascade) UnpackCascade(packet []byte) (*PuplocCascade, error)

UnpackCascade unpacks the pupil localization cascade file.

func (*PuplocCascade) UnpackFlp added in v1.3.0 

func (plc *PuplocCascade) UnpackFlp(cf string) (*PuplocCascade, error)

UnpackFlp unpacks the facial landmark points cascade file. This will return the binary representation of the cascade file.

Source Files

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