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imaging

package module

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Versions in this module

v1

v1.0.8

Mar 29, 2024

v1.0.7

Mar 29, 2024

v1.0.5

Jun 19, 2023

v1.0.4

Jun 18, 2023

v1.0.3

Jun 18, 2023

v1.0.2

Jun 17, 2023

v1.0.1

Jun 16, 2023

Changes in this version

+ func FixOrientation(img image.Image, o Orientation) image.Image

+ type Orientation int

+ const OrientationFlipH

+ const OrientationFlipV

+ const OrientationNormal

+ const OrientationRotate180

+ const OrientationRotate270

+ const OrientationRotate90

+ const OrientationTranspose

+ const OrientationTransverse

+ const OrientationUnspecified

+ func ReadOrientation(r io.Reader) Orientation

v1.0.0

Jun 15, 2023

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 AdjustHue(img image.Image, shift float64) *image.NRGBA

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

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

+ func Encode(w io.Writer, img image.Image, format Format, opts ...EncodeOption) 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, opts ...DecodeOption) (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 Rotate(img image.Image, angle float64, bgColor color.Color) *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, opts ...EncodeOption) (err error)

+ func SetMaxProcs(value int)

+ 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 ConvolveOptions struct

+ Abs bool

+ Bias int

+ Normalize bool

+ type DecodeOption func(*decodeConfig)

+ func AutoOrientation(enabled bool) DecodeOption

+ type EncodeOption func(*encodeConfig)

+ func GIFDrawer(drawer draw.Drawer) EncodeOption

+ func GIFNumColors(numColors int) EncodeOption

+ func GIFQuantizer(quantizer draw.Quantizer) EncodeOption

+ func JPEGQuality(quality int) EncodeOption

+ func PNGCompressionLevel(level png.CompressionLevel) EncodeOption

+ type Format int

+ const BMP

+ const GIF

+ const JPEG

+ const PNG

+ const TIFF

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

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

+ 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