Из PPM в PFM

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.

PFM is a font metric data file. It is also one of the formats of the font file category. This applies to fonts in the Adobe Type 1 (= postscript) category used by the Microsoft Windows operating system. The format contains font character sizes. He asks for the font associated file extension .PFB. It does not have the glyphs of the font itself, but with its help, the correct display of the PFB file is obtained. PFM files, that is, the Printer Font Metrics File, contain metric information about the fonts that applications use to lay out lines of text in a document. PostScipt Type 1 fonts have multiple files. The package usually comes with a couple of files with the extensions PFB and PFM. However, there may be 3 files with the extensions AFM, PFB and INF, or all 4 files - PFM, PFB, INF, AFM. Windows 7 and Windows Vista must have PFM. Modern versions of Windows have built-in tools for installing fonts of all formats. The installation procedure is the same for all font formats, but it differs for different versions of Windows. After installation, you may need to restart the application. Only then will the new fonts appear in the font list. You can open the PFM file using programs such as Adobe Photoshop, Adobe Creative Suite, Microsoft Windows Font Viewer, Microsoft Windows.