gblur

package

v0.0.0-...-27d64f3 Latest Latest Go to latest Published: Sep 25, 2019 License: MIT Imports: 4 Imported by: 0

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func BoundReflection(idx, min, max int) int

BoundReflection returns a reflected index on the interval [min, max)

func Convolve(img image.NRGBA, filter [][]float64) *image.NRGBA

Convolve apply the specified filter to the image with a 2D convolution (One gouroutine per CPU)

func ConvolvePixel(img image.NRGBA, x, y int, filter [][]float64) color.NRGBA

ConvolvePixel apply the specified filter to the pixel at coordinates (x, y) (sequential)

func GaussianKernel(sz int, sigma float64) [][]float64

GaussianKernel returns a gaussian filter of size sz x sz with sigma standard deviation

func ToNRGBA(img image.Image) *image.NRGBA

ToNRGBA creates a copy of img converting its format in NRGBA (non-alpha-premultiplied 32-bit color)

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