Из PPM в JXR

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.

JXR is a raster image category file format whose full name is JPEG XR Image. JXR files were created so that you can support better compression and also become more accurate than .JPG files. The development of the image, which is stored in JPEG XR format, has been handled by Microsoft from the very beginning for its Windows Media program. Implements support for images with a color depth of 48 bits of RGB. Used when professional high-resolution image editing is required. Also provides lossy and lossless compression support. JPEG XR, formerly called HD Photo and Windows Media Photo, is an encoding standard. This is the file format for still images. It was patented by Microsoft. This standard supports Windows Vista, like any operating system on which the .NET Framework 3.0 is installed. It defines color formats for printing and displaying. It also defines special encoding in order to expand the dynamic range, lossless and lossy compression functions, as well as efficient decoding for many resolutions with minimal computer resources in order to convert or decode. JPEG XR is inherently high performance. For example, with 85% quality, there are practically no artifacts.