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Within LTS Haskell 24.35 (ghc-9.10.3)
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JuicyPixels Codec.Picture.Metadata No documentation available.
WindowsBitmapColorSpace :: ByteString -> ColorSpaceJuicyPixels Codec.Picture.Metadata No documentation available.
foldMap :: Monoid m => (Elem Keys -> m) -> Metadatas -> mJuicyPixels Codec.Picture.Metadata foldMap equivalent for metadatas.
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JuicyPixels Codec.Picture.Metadata.Exif Short
imageToBitmap :: DynamicImage -> ByteStringJuicyPixels Codec.Picture.Saving This function will try to do anything to encode an image as bitmap, make all color conversion and such. Equivalent of decodeImage for Bitmap encoding
class (Pixel a, Pixel PixelBaseComponent a) =>
LumaPlaneExtractable aJuicyPixels Codec.Picture.Types Helper class to help extract a luma plane out of an image or a pixel
colorMap :: Pixel a => (PixelBaseComponent a -> PixelBaseComponent a) -> a -> aJuicyPixels Codec.Picture.Types Apply a function to each component of a pixel. If the color type possess an alpha (transparency channel), it is treated like the other color components.
dynamicMap :: (forall pixel . Pixel pixel => Image pixel -> a) -> DynamicImage -> aJuicyPixels Codec.Picture.Types Helper function to help extract information from dynamic image. To get the width of a dynamic image, you can use the following snippet:
dynWidth :: DynamicImage -> Int dynWidth img = dynamicMap imageWidth img
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JuicyPixels Codec.Picture.Types Equivalent of the pixelMap function for the dynamic images. You can perform pixel colorspace independant operations with this function. For instance, if you want to extract a square crop of any image, without caring about colorspace, you can use the following snippet.
dynSquare :: DynamicImage -> DynamicImage dynSquare = dynamicPixelMap squareImage squareImage :: Pixel a => Image a -> Image a squareImage img = generateImage (\x y -> pixelAt img x y) edge edge where edge = min (imageWidth img) (imageHeight img)
extractLumaPlane :: LumaPlaneExtractable a => Image a -> Image (PixelBaseComponent a)JuicyPixels Codec.Picture.Types Extract a luma plane out of an image. This method is in the typeclass to help performant implementation.
jpegToGrayScale :: FilePath -> FilePath -> IO () jpegToGrayScale source dest