Safe Haskell	None
Language	Haskell2010

Vision.Image.Interpolate

Description

Provides a way to estimate the value of a pixel at rational coordinates using a linear interpolation.

Synopsis

Documentation

class Interpolable p where Source #

Provides a way to apply the interpolation to every component of a pixel.

Minimal complete definition

interpol

Methods

interpol :: (PixelChannel p -> PixelChannel p -> PixelChannel p) -> p -> p -> p Source #

Given a function which interpolates two points over a single channel, returns a function which interpolates two points over every channel of two pixels.

Instances

Interpolable Bool Source #
Methods interpol :: (PixelChannel Bool -> PixelChannel Bool -> PixelChannel Bool) -> Bool -> Bool -> Bool Source #
Interpolable Double Source #
Methods interpol :: (PixelChannel Double -> PixelChannel Double -> PixelChannel Double) -> Double -> Double -> Double Source #
Interpolable Float Source #
Methods interpol :: (PixelChannel Float -> PixelChannel Float -> PixelChannel Float) -> Float -> Float -> Float Source #
Interpolable Int Source #
Methods interpol :: (PixelChannel Int -> PixelChannel Int -> PixelChannel Int) -> Int -> Int -> Int Source #
Interpolable Int16 Source #
Methods interpol :: (PixelChannel Int16 -> PixelChannel Int16 -> PixelChannel Int16) -> Int16 -> Int16 -> Int16 Source #
Interpolable Int32 Source #
Methods interpol :: (PixelChannel Int32 -> PixelChannel Int32 -> PixelChannel Int32) -> Int32 -> Int32 -> Int32 Source #
Interpolable Word Source #
Methods interpol :: (PixelChannel Word -> PixelChannel Word -> PixelChannel Word) -> Word -> Word -> Word Source #
Interpolable Word8 Source #
Methods interpol :: (PixelChannel Word8 -> PixelChannel Word8 -> PixelChannel Word8) -> Word8 -> Word8 -> Word8 Source #
Interpolable Word16 Source #
Methods interpol :: (PixelChannel Word16 -> PixelChannel Word16 -> PixelChannel Word16) -> Word16 -> Word16 -> Word16 Source #
Interpolable Word32 Source #
Methods interpol :: (PixelChannel Word32 -> PixelChannel Word32 -> PixelChannel Word32) -> Word32 -> Word32 -> Word32 Source #
Interpolable GreyPixel Source #
Methods interpol :: (PixelChannel GreyPixel -> PixelChannel GreyPixel -> PixelChannel GreyPixel) -> GreyPixel -> GreyPixel -> GreyPixel Source #
Interpolable HSVPixel Source #
Methods interpol :: (PixelChannel HSVPixel -> PixelChannel HSVPixel -> PixelChannel HSVPixel) -> HSVPixel -> HSVPixel -> HSVPixel Source #
Interpolable RGBPixel Source #
Methods interpol :: (PixelChannel RGBPixel -> PixelChannel RGBPixel -> PixelChannel RGBPixel) -> RGBPixel -> RGBPixel -> RGBPixel Source #
Interpolable RGBAPixel Source #
Methods interpol :: (PixelChannel RGBAPixel -> PixelChannel RGBAPixel -> PixelChannel RGBAPixel) -> RGBAPixel -> RGBAPixel -> RGBAPixel Source #

bilinearInterpol :: (Image i, Interpolable (ImagePixel i), Integral (ImageChannel i)) => i -> RPoint -> ImagePixel i Source #

Uses a bilinear interpolation to find the value of the pixel at the rational coordinates.

Estimates the value of a rational point p using a, b, c and d :

      x1       x2

y1    a ------ b
      -        -
      -  p     -
      -        -
y2    c ------ d