imaging

package module

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Versions in this module

v1

v1.7.0

Jul 1, 2019

Changes in this version

+ func AdjustSaturation(img image.Image, percentage float64) *image.NRGBA

type DecodeOption

+ func AutoOrientationWithLimit(enabled bool, maxWidth, maxHeigth int) DecodeOption

v1.5.0

Aug 19, 2018

Changes in this version

+ type DecodeOption func(*decodeConfig)

+ func AutoOrientation(enabled bool) DecodeOption

type Format

+ func FormatFromExtension(ext string) (Format, error)

v1.4.2

May 8, 2018

Changes in this version

type Format

+ func FormatFromFilename(filename string) (Format, error)

v1.4.1

Mar 14, 2018

Changes in this version

type EncodeOption

+ func PNGCompressionLevel(level png.CompressionLevel) EncodeOption

v1.4.0

Mar 8, 2018

Changes in this version

type EncodeOption

+ func GIFDrawer(drawer draw.Drawer) EncodeOption

+ func GIFNumColors(numColors int) EncodeOption

+ func GIFQuantizer(quantizer draw.Quantizer) EncodeOption

v1.3.0

Dec 9, 2017

Changes in this version

+ type EncodeOption func(*encodeConfig)

+ func JPEGQuality(quality int) EncodeOption

v1.2.4

Oct 26, 2017

v1.2.3

Oct 7, 2017

v1.2.2

Sep 16, 2017

v1.2.1

Aug 6, 2017

v1.2.0

Jul 15, 2017

Changes in this version

+ func Rotate(img image.Image, angle float64, bgColor color.Color) *image.NRGBA

v1.1.0

Mar 19, 2017

Changes in this version

+ func Convolve3x3(img image.Image, kernel [9]float64, options *ConvolveOptions) *image.NRGBA

+ func Convolve5x5(img image.Image, kernel [25]float64, options *ConvolveOptions) *image.NRGBA

+ type ConvolveOptions struct

+ Abs bool

+ Bias int

+ Normalize bool

v1.0.0

Jan 2, 2017

Changes in this version

+ var ErrUnsupportedFormat = errors.New("imaging: unsupported image format")

+ func AdjustBrightness(img image.Image, percentage float64) *image.NRGBA

+ func AdjustContrast(img image.Image, percentage float64) *image.NRGBA

+ func AdjustFunc(img image.Image, fn func(c color.NRGBA) color.NRGBA) *image.NRGBA

+ func AdjustGamma(img image.Image, gamma float64) *image.NRGBA

+ func AdjustSigmoid(img image.Image, midpoint, factor float64) *image.NRGBA

+ func Blur(img image.Image, sigma float64) *image.NRGBA

+ func Clone(img image.Image) *image.NRGBA

+ func Crop(img image.Image, rect image.Rectangle) *image.NRGBA

+ func CropAnchor(img image.Image, width, height int, anchor Anchor) *image.NRGBA

+ func CropCenter(img image.Image, width, height int) *image.NRGBA

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

+ func Encode(w io.Writer, img image.Image, format Format) error

+ func Fill(img image.Image, width, height int, anchor Anchor, filter ResampleFilter) *image.NRGBA

+ func Fit(img image.Image, width, height int, filter ResampleFilter) *image.NRGBA

+ func FlipH(img image.Image) *image.NRGBA

+ func FlipV(img image.Image) *image.NRGBA

+ func Grayscale(img image.Image) *image.NRGBA

+ func Histogram(img image.Image) [256]float64

+ func Invert(img image.Image) *image.NRGBA

+ func New(width, height int, fillColor color.Color) *image.NRGBA

+ func Open(filename string) (image.Image, error)

+ func Overlay(background, img image.Image, pos image.Point, opacity float64) *image.NRGBA

+ func OverlayCenter(background, img image.Image, opacity float64) *image.NRGBA

+ func Paste(background, img image.Image, pos image.Point) *image.NRGBA

+ func PasteCenter(background, img image.Image) *image.NRGBA

+ func Resize(img image.Image, width, height int, filter ResampleFilter) *image.NRGBA

+ func Rotate180(img image.Image) *image.NRGBA

+ func Rotate270(img image.Image) *image.NRGBA

+ func Rotate90(img image.Image) *image.NRGBA

+ func Save(img image.Image, filename string) (err error)

+ func Sharpen(img image.Image, sigma float64) *image.NRGBA

+ func Thumbnail(img image.Image, width, height int, filter ResampleFilter) *image.NRGBA

+ func Transpose(img image.Image) *image.NRGBA

+ func Transverse(img image.Image) *image.NRGBA

+ type Anchor int

+ const Bottom

+ const BottomLeft

+ const BottomRight

+ const Center

+ const Left

+ const Right

+ const Top

+ const TopLeft

+ const TopRight

+ type Format int

+ const BMP

+ const GIF

+ const JPEG

+ const PNG

+ const TIFF

+ func (f Format) String() string

+ type ResampleFilter struct

+ Kernel func(float64) float64

+ Support float64

+ var BSpline ResampleFilter

+ var Bartlett ResampleFilter

+ var Blackman ResampleFilter

+ var Box ResampleFilter

+ var CatmullRom ResampleFilter

+ var Cosine ResampleFilter

+ var Gaussian ResampleFilter

+ var Hamming ResampleFilter

+ var Hann ResampleFilter

+ var Hermite ResampleFilter

+ var Lanczos ResampleFilter

+ var Linear ResampleFilter

+ var MitchellNetravali ResampleFilter

+ var NearestNeighbor ResampleFilter

+ var Welch ResampleFilter

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