Из PPM в WBMP

PPM is an image file format that is included in the Netpbm open source graphics editor. This graphic format is convenient and simple. Other Netpbm formats that have found widespread use are PBM, i.e. Portable Bitmap, as well as PGM, i.e. Portable Graymap. This three graphic formats are sometimes referred to as PNM, i.e. Portable Format Anymap. PGM stores grayscale images. PMP is a collection of color images, which are intermediate files that are used when converting formats not so well known, using Portable Bitmap Utilities. And PPM files are mainly used on UNIX platforms that are based on Intel. These files are categorized as bitmap images. This is a 24-bit color image that has been formatted in text format. Takes every pixel with a number from zero to 65536 for storage. The color of the pixel is determined by the number. Contains data spaces, the height and width of the character, the maximum color values. Portable Pixmap uses an uncompressed low-performance format that can be compared with other bitmap image formats. This explains its rare use in order to store large images.

WBMP is a raster image format that differs by using only two colors. WBMP files are a black and white bitmap image. It is a standard form for optimizing raster images for mobile devices in a single-bit color. The name is an abbreviation for Wireless Bitmap. WBMP is an analogue of the BMP graphic image format, but unlike it supports only monochrome 1-bit images. The WBMP format is widely used in mobile phones and PDAs; files of this format can be part of the forwarded SMS messages.