image

Documentation

Index

• func CalculateContrast(img image.Image) float64
• func CalculateOverlap(img1, img2 image.Image, col bool, minOverlap, maxOverlap int) int
• func CalculateOverlapReuseMemory(img1, img2 image.Image, col bool, minOverlap, maxOverlap int, ...) int
• func MergeUniformBoundsImagesByOverlap(imgIdxs [][]int, getImage func(int) image.Image, imgWidth, imgHeight int, ...) image.Image
• func MergeUniformBoundsImagesByOverlapReuseMemory(imgIdxs [][]int, getImage func(int) image.Image, imgWidth, imgHeight int, ...)
• func RectClipInBounds(rect *image.Rectangle, imgWidth, imgHeight int)
• func RectRotateByCenter(x, y, l, w int, angle float64) []image.Point
• func RectUnionPoint(rect image.Rectangle, p image.Point) image.Rectangle
• func ToGary(img image.Image) *image.Gray
• func ToGaryReuseMemory(img image.Image, gary *image.Gray)
• func Transfer(src, dst string, decode Decode, encode Encode) error
• type AveragePoolImage
  • func NewAveragePoolImage(img image.Image, reductionFactor int) *AveragePoolImage
  • func (img *AveragePoolImage) At(x, y int) color.Color
  • func (img *AveragePoolImage) Bounds() image.Rectangle
  • func (img *AveragePoolImage) ColorModel() color.Model
• type Circle
• type CircularArc
• type Decode
• type Encode
• type Line
• type LineCap
• type MergeImage
  • func NewMergeImage(imgs [][]image.Image, width, height int, ...) *MergeImage
  • func (m *MergeImage) At(x, y int) color.Color
  • func (m *MergeImage) Bounds() image.Rectangle
  • func (m *MergeImage) ColorModel() color.Model
  • func (m *MergeImage) ImgOffset(x, y int) image.Image
• type Polygon

Functions

func CalculateContrast

func CalculateContrast(img image.Image) float64

CalculateContrast 计算图片对比度

func CalculateOverlap

func CalculateOverlap(img1, img2 image.Image, col bool, minOverlap, maxOverlap int) int

计算两张图的重合像素,第一张的图的后半部分和第二张的前半部分

func CalculateOverlapReuseMemory

func CalculateOverlapReuseMemory(img1, img2 image.Image, col bool, minOverlap, maxOverlap int, gary1, gary2 []uint8) int

func MergeUniformBoundsImagesByOverlap

func MergeUniformBoundsImagesByOverlap(imgIdxs [][]int, getImage func(int) image.Image, imgWidth, imgHeight int,
	horizontalOverlaps, verticalOverlaps []int) image.Image

有一定重合的固定大小的图片拼图

func MergeUniformBoundsImagesByOverlapReuseMemory

func MergeUniformBoundsImagesByOverlapReuseMemory(imgIdxs [][]int, getImage func(int) image.Image, imgWidth, imgHeight int,
	horizontalOverlaps, verticalOverlaps []int, result *image.RGBA)

func RectClipInBounds

func RectClipInBounds(rect *image.Rectangle, imgWidth, imgHeight int)

func RectRotateByCenter

func RectRotateByCenter(x, y, l, w int, angle float64) []image.Point

func RectUnionPoint

func RectUnionPoint(rect image.Rectangle, p image.Point) image.Rectangle

func ToGary

func ToGary(img image.Image) *image.Gray

func ToGaryReuseMemory

func ToGaryReuseMemory(img image.Image, gary *image.Gray)

func Transfer

func Transfer(src, dst string, decode Decode, encode Encode) error

Types

type AveragePoolImage

type AveragePoolImage struct {
	Rect image.Rectangle
	// contains filtered or unexported fields
}

func NewAveragePoolImage

func NewAveragePoolImage(img image.Image, reductionFactor int) *AveragePoolImage

func (*AveragePoolImage) At

func (img *AveragePoolImage) At(x, y int) color.Color

func (*AveragePoolImage) Bounds

func (img *AveragePoolImage) Bounds() image.Rectangle

func (*AveragePoolImage) ColorModel

func (img *AveragePoolImage) ColorModel() color.Model

type Circle

type Circle struct {
	Center image.Point
	Radius int
}

type CircularArc

type CircularArc struct {
	Center image.Point
	Start  image.Point
	End    image.Point
}

counter clockwise if clockwise ,startX,startY <-> endX, endY

type Decode

type Decode func(r io.Reader) (image.Image, error)

type Encode

type Encode func(io.Writer, image.Image) error

type Line

type Line struct {
	Start image.Point
	End   image.Point
}

type LineCap

type LineCap int

const (
	// LineCapButt strokes do not extend beyond a line's two endpoints.
	LineCapButt LineCap = iota
	// LineCapRound strokes will be extended by a half circle with a diameter equal to the stroke width.
	LineCapRound
)

type MergeImage

type MergeImage struct {
	Pixes [][]image.Image

	Rect image.Rectangle
	// contains filtered or unexported fields
}

func NewMergeImage

func NewMergeImage(imgs [][]image.Image, width, height int, horizontalOverlaps, verticalOverlaps []int) *MergeImage

func (*MergeImage) At

func (m *MergeImage) At(x, y int) color.Color

func (*MergeImage) Bounds

func (m *MergeImage) Bounds() image.Rectangle

func (*MergeImage) ColorModel

func (m *MergeImage) ColorModel() color.Model

func (*MergeImage) ImgOffset

func (m *MergeImage) ImgOffset(x, y int) image.Image

type Polygon

type Polygon []image.Point