blend

Documentation

Index

• func AddGray(img1 *image.Gray, img2 *image.Gray) (*image.Gray, error)
• func AddGrayWeighted(img1 *image.Gray, w1 float64, img2 *image.Gray, w2 float64) (*image.Gray, error)
• func AddScalarToGray(img *image.Gray, value int) *image.Gray

Functions

func AddGray

func AddGray(img1 *image.Gray, img2 *image.Gray) (*image.Gray, error)

AddGray accepts two grayscale images and adds their pixel values. If the result for a given position overflows uint8, the result will be clamped to max uint8 (255). Example of usage:

res, err := blend.AddGray(gray1, gray2)

func AddGrayWeighted

func AddGrayWeighted(img1 *image.Gray, w1 float64, img2 *image.Gray, w2 float64) (*image.Gray, error)

AddGrayWeighted accepts two grayscale images and adds their pixel values using the following equation: res(x, y) = img1(x, y) * w1 + img2(x, y) * w2 If the result for a given position overflows uint8, the result will be clamped to max uint8 (255). If the result for a given position is negative, then it will be clamped to 0. Example of usage:

res, err := blend.AddGrayWeighted(gray1, 0.25, gray2, 0.75)

func AddScalarToGray

func AddScalarToGray(img *image.Gray, value int) *image.Gray

AddScalarToGray takes a grayscale image and adds an integer value to all pixels of the image. If the result overflows uint8, the result will be clamped to max uint8 (255). Example of usage:

res := blend.AddScalarToGray(img, 56)