The PPM Image Format

Raster digital images are represented as a sequence of elements known as pixels. The pixels are arranged in rows and columns. Several file formats have been created over the years to store images for later viewing. Some of these file formats are PNG$,$ JPEG, GIF, and so on$.$ Another such format is the PPM file format. The PPM file format provides a fairly straightforward way of accessing image data for manipulation and is an uncompressed format. A PPM Image has the following format:

A "magic number" for identifying the file type. A PPM image's magic number is the two characters $"$P$6".$

A whitespace character $($this can be an actual space, or line feed, for us we will use the linefeed $"$

$"$ character$).$

A width formatted as ASCII characters in decimal.

A whitespace character $($an actual space$).$

A height, again in ASCII decimal.