snip

README

Documentation

Index

• func Crop(img image.Image, field Field, c *chan ExtractedIMG)
• func Decode(image io.Reader, contentType string) (imageRef image.Image, err error)
• func Rotate(img image.Image, angle float64) image.Image
• func Threshold(img image.Image, limiar uint8) image.Image
• type ExtractedIMG
• type Field
• type FieldMask
• type KeyValue
  • func Extract(img image.Image, fields []Field) []KeyValue

Functions

func Crop

func Crop(img image.Image, field Field, c *chan ExtractedIMG)

Crop is responsible for cutting the selected region of an image.

func Decode

func Decode(image io.Reader, contentType string) (imageRef image.Image, err error)

Decode responsible for decoding and instantiating image based on a content-type.

func Rotate

func Rotate(img image.Image, angle float64) image.Image

Rotate Method responsible for free image rotation

func Threshold

func Threshold(img image.Image, limiar uint8) image.Image

Threshold is responsible for define a new image using color based on limiar passing on the function call

Types

type ExtractedIMG

type ExtractedIMG struct {
	Image image.Image
	Field Field
}

type Field

type Field struct {
	Key    string    `json:"key"`
	Mask   FieldMask `json:"mask"`
	Regexp []string  `json:"regexp"`
}

type FieldMask

type FieldMask struct {
	X      int `json:"x"`
	Y      int `json:"y"`
	Width  int `json:"width"`
	Height int `json:"height"`
}

FieldMask is the struct to define a mask used on crop method

type KeyValue

type KeyValue struct {
	Key   string `json:"key"`
	Value string `json:"value"`
}

func Extract

func Extract(img image.Image, fields []Field) []KeyValue