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Add MagickWand.CLAHEImage() (fixes #334) #335

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Merged
justinfx merged 1 commit into from
Feb 28, 2026
Merged

Add MagickWand.CLAHEImage() (fixes #334) #335

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14 changes: 14 additions & 0 deletions imagick/magick_wand_image.go
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Original file line number Diff line number Diff line change
Expand Up @@ -232,6 +232,20 @@ func (mw *MagickWand) ChopImage(width, height uint, x, y int) error {
return mw.getLastErrorIfFailed(ok)
}

// CLAHEImage is a variant of adaptive histogram equalization in which the contrast amplification is limited,
// so as to reduce this problem of noise amplification.
//
// width: the width of the tile divisions to use in horizontal direction
// height: the height of the tile divisions to use in vertical direction
// numberBins: number of bins for histogram ("dynamic range") (usually 256).
// clipLimit: contrast limit for localised changes in contrast. A limit less than 1 results in standard
// non-contrast limited AHE

func (mw *MagickWand) CLAHEImage(width, height uint, numberBins, clipLimit float64) error {
ok := C.MagickCLAHEImage(mw.mw, C.size_t(width), C.size_t(height), C.double(numberBins), C.double(clipLimit))
return mw.getLastErrorIfFailed(ok)
}

// ClampImage Restricts the color range from 0 to the quantum depth
func (mw *MagickWand) ClampImage() error {
ok := C.MagickClampImage(mw.mw)
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