Из PPM в JPT

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.

JPT is a file extension belonging to the JPEG 2000 bitmap file category (versions .jp2, .j2k, .jpt and others) and the JPEG 2000 file format. JPEG 2000 format is defined as a system for encoding and transmitting graphic raster files. It was developed by the Joint Photographic Experts Group (JPEG). It is approved by a series of ISO / ITU standards. The JPEG 2000 standard, which was designed from the very beginning to replace traditional JPEG, applies wavelet compression with and without loss. It gives an increased compression ratio and surpasses JPEG by all standards. The standard method for designating JPEG 2000 files is the .jp2 extension. However, other extensions are also used for this. In particular, .jpt. A .jpt file is a JPEG 2000 compressed image. It is saved in the JPT codestream version, where the name means “JPIP Tile-part”. This is a segmented part of JPIP, or the JPEG 2000 interactive protocol. This is the standard JPEG 2000 image streaming protocol. It is oriented to get maximum efficiency and quick access to graphic data. JPT is one of two standard streaming modes. The second mode is called JPP, JPIP Precinct.