This bitmap format is used in the Kodak DC series family of cameras. It is also known under the name Kodak Photogen. KDC is a RAW photo format for the post-processing of photos that has the ability to change key image parameters while maintaining the original level of detail.
PPM is a simple format for storing images portable pixmap: color (PPM), grayscale (PGM) and black and white (PBM). These formats can provide an intermediate representation of the data when converting raster image files listed three types between different platforms. PPM format was developed by Jeff Poskanzerom.