Mathematica Import/Export Format

RawBitmap

Raw raster image data.
Used as an intermediate format by imaging devices.
Stores images as RGB or grayscale bitmaps at a resolution of 8 bits per channel.
Binary format.
Does not include meta-information.
Equivalent to the binary portion of PPM files.

Import and Export fully support the raw bitmap format.

IMPORT AND EXPORT

Import["file", "RawBitmap", ImageSize -> {w, h}] imports a raw bitmap file, returning a graphics object.

The image size must be specified when importing a raw bitmap.

Export["file", expr, "RawBitmap"] exports graphics or any other expression as an image to a raw bitmap.

Import["file", "RawBitmap", ImageSize -> {w, h}]returns an expression of the form Graphics[Raster[data], opts], where data is an array of RGB color values.

Export["file", expr, "RawBitmap"] creates a raw bitmap with the same image size as the displayed form of .

All fonts are rasterized on export.

The format name "RawBitmap" must be explicitly specified.

Import["file", {"RawBitmap", elem}, ImageSize->{w, h}] imports the specified element from a "RawBitmap" file.

Import["file", {"RawBitmap", elem, sub_a, sub_b, ...}, ImageSize->{w, h}] imports a subelement.

Import["file", {"RawBitmap", {elem₁, elem₂, ...}}, ImageSize->{w, h}] imports multiple elements.

Export["file", expr, {"RawBitmap", elem}] creates a raw bitmap file by treating expr as specifying element elem.

Export["file", {expr₁, expr₂, ...}, {"RawBitmap", {elem₁, elem₂, ...}}] treats each expr_i as specifying the corresponding elem_i.

Export["file", expr, "RawBitmap", opt₁->val₁, ...] exports expr with the specified option elements taken to have the specified values.

Export["file", {elem₁->expr₁, elem₂->expr₂, ...}, {"RawBitmap", "Rules"}] uses rules to specify the elements to be exported.

See the reference pages for full general information on Import and Export.

ImportString and ExportString support raw bitmaps.

ELEMENTS

General Import elements:

	"Elements"	list of elements and options available in this file
	"Rules"	full list of rules for each element and option
	"Options"	list of rules for options, properties, and settings

Data representation elements:

	"Data"	array of color values
	"Graphics"	Graphics object representing an image
	"GrayLevels"	array of normalized gray-level values

"RGBColorArray"

array of RGBColor objects

Import and Export by default use the "Graphics" element for "RawBitmap" files.

Advanced Import elements:

	"BitDepth"	bits used to represent each color channel in the file
	"ColorSpace"	color encoding used in the file

OPTIONS

General options:

ImageSize

Automatic

overall image size, always specified on Import