The Image.Color structure

Synopsis

signature IMAGE_COLOR
structure Image.Color : IMAGE_COLOR

Interface

type image = (real * real * real) Array2.array

val fromGrey : Image.Grey.image -> image

val red : image -> Image.Grey.image
val green : image -> Image.Grey.image
val blue : image -> Image.Grey.image

val fromRGB : {red:Image.Grey.image, green:Image.Grey.image, blue:Image.Grey.image} -> image
val toRGB : image -> {red:Image.Grey.image, green:Image.Grey.image, blue:Image.Grey.image}

val fromGreyHot : Image.Grey.image -> image

val fromHSV : {hue:Image.Grey.image, saturation:Image.Grey.image, value:Image.Grey.image) -> image
val toHSV : image -> {hue:Image.Grey.image, saturation:Image.Grey.image, value:Image.Grey.image)

val normalize : (real * real) -> image -> image
val maximizeContrast : image -> image

val writePPMA : image * string -> unit
val writePPM : image * string -> unit
val readPPM : string -> image

Details

type image = (real * real * real) Array2.array

The color image type.

val fromGrey : Image.Grey.image -> image

Create a color image from a grey image.

val red : image -> Image.Grey.image

val green : image -> Image.Grey.image

val blue : image -> Image.Grey.image

Return one of the component parts of an image.

val fromRGB : {red:Image.Grey.image, green:Image.Grey.image, blue:Image.Grey.image} -> image

val toRGB : image -> {red:Image.Grey.image, green:Image.Grey.image, blue:Image.Grey.image}

Convert to and from RGB component images.

val fromGreyHot : Image.Grey.image -> image

Use a false coloring scheme to convert a grey image to color, where the black to white spectrum is mapped to a spectrum including shades of black, red, orange, yellow, and white, in that order.

val fromHSV : {hue:Image.Grey.image, saturation:Image.Grey.image, value:Image.Grey.image} -> image

val toHSV : image -> {hue:Image.Grey.image, saturation:Image.Grey.image, value:Image.Grey.image}

Convert to and from hue, saturation, value component images.

val normalize : (min real * max real) -> img image -> image

Normalize RGB components of pixels in img from the range (min,max) to the range (0.0,1.0). If any pixel component value is outside of (min,max), raise Fail.

val maximizeContrast : image -> image

Normalize RGB components of pixels to the range (0.0,1.0).

val writePPMA : image * string -> unit

Write an image to file using the PPMA (ASCII PPM) file format.

val writePPM : image * string -> unit

Write an image to file using the PPM (binary) file format.

val readPPM : string -> image

Read an image from disk (either PPM or PPMA format).