image

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v0.3.2 Latest Latest Go to latest Published: Nov 25, 2024 License: MIT, Apache-2.0 Imports: 8 Imported by: 0

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Valid go.mod file
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Stable version
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Repository

github.com/hopeio/utils

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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 RectRotateByCenter(x, y, l, w int, angle float64) []image.Point
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
func Union(rect image.Rectangle, p image.Point) image.Rectangle
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 Decode
type Encode
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 Point
type Rectangle
- func Rect[T constraintsi.Number](x0, y0, x1, y1 T) Rectangle[T]

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func CalculateContrast ¶ added in v0.3.1

func CalculateContrast(img image.Image) float64

CalculateContrast 计算图片对比度

func CalculateOverlap ¶ added in v0.1.13

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 ¶ added in v0.3.0

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

func MergeUniformBoundsImagesByOverlap ¶ added in v0.3.0

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 ¶ added in v0.3.0

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

func RectRotateByCenter ¶ added in v0.3.0

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

func ToGary ¶ added in v0.3.1

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

func ToGaryReuseMemory ¶ added in v0.3.1

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

func Transfer ¶ added in v0.2.0

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

func Union ¶ added in v0.1.2

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

Types ¶

type AveragePoolImage ¶ added in v0.3.1

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

func NewAveragePoolImage ¶ added in v0.3.1

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

func (*AveragePoolImage) At ¶ added in v0.3.1

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

func (*AveragePoolImage) Bounds ¶ added in v0.3.1

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

func (*AveragePoolImage) ColorModel ¶ added in v0.3.1

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

type Decode ¶ added in v0.2.0

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

type Encode ¶ added in v0.2.0

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

type MergeImage ¶ added in v0.3.0

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

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

func NewMergeImage ¶ added in v0.3.1

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

func (*MergeImage) At ¶ added in v0.3.1

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

func (*MergeImage) Bounds ¶ added in v0.3.1

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

func (*MergeImage) ColorModel ¶ added in v0.3.1

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

func (*MergeImage) ImgOffset ¶ added in v0.3.1

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

type Point ¶ added in v0.3.2

type Point[T constraintsi.Number] struct {
	X, Y T
}

type Rectangle ¶ added in v0.3.2

type Rectangle[T constraintsi.Number] struct {
	Min, Max Point[T]
}

func Rect ¶ added in v0.3.2

func Rect[T constraintsi.Number](x0, y0, x1, y1 T) Rectangle[T]

Source Files ¶

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Directories ¶

Path	Synopsis
color
qrcode
raw
svg

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