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 ExportImport and Export

  • Import["file", "RawBitmap", ImageSize->{w, h}] imports a raw bitmap file and returns an Image 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.
  • 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 must be explicitly specified.
  • Import["file", {"RawBitmap", elem}, ImageSize->{w, h}] imports the specified element from a file.
  • Import["file", {"RawBitmap", elem, suba, subb, ...}, 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 as specifying the corresponding .
  • 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.

ElementsElements

  • 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
    "Image"raster image, given as an Image object
  • "RGBColorArray"array of RGBColor objects
  • Import and Export by default use the element for raw bitmap files.
  • Advanced Import elements:
  • "BitDepth"bits used to represent each color channel in the file
    "ColorSpace"color encoding used in the file

OptionsOptions

ExamplesExamplesopen allclose all

Basic Examples (1)Basic Examples (1)

Read raw bitmap data, specifying the width and height of the image in pixels:

In[1]:=
Click for copyable input
Out[1]=
New in 5 | Last modified in 7
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