All image data imported into Mathematica using the ImageRead
command may be displayed using Show, since ImageRead returns an ImageData
object that is Show compatible.
Raw monochrome image data may be visualized in any number of ways, such as
surface plots, contour plots and intensity plots. The latter is
the most natural (see ListDensityPlot, Raster).
Here is a 32-by-32 fragment of the example image.
According to (3), color image data in a planar format may be treated as
three separate single color images, one for each of the color channels.
Here, the three channels are displayed as a GraphicsArray.
Alternatively, the three individual color channels may be viewed as
separate monochrome images. This is a convenient conceptualization of
color images allowing the simple and immediate extension of many
monochrome image processing techniques to the color image domain.
User's Guide: Section 2.5.
Function Index: ImageRead, ImageTake, ToChannels, ToGrayLevel, PlanarImageData.