JPC is a bitmap image format that uses advanced JPEG 2000 wave compression. It is classified as a JPEG 2000 Code Stream File. JPEG 2000, in turn, is a popular standard for compressing wavelet image data. The .JPC extension supports color depths of 8, 24, and 32 bits per pixel. Also supports grayscale, RGB, YCbCr, XYZ and Lab color space. The file was developed by the standards committee of the Joint Photographic Experts Group. JPC is the successor to the JPEG image format, which is very popular and very common. The updated format is able to provide many additional features. In particular, color spaces. JPC has also gained fame as a variant of JPEG2000. It belongs to a large group of formats that bring a variety of updates to the original JPEG format. For example, J2C, JPM, or J2K. The .jpc file extension is a JPEG 2000 image stream file. This file can be opened using programs such as Corel PaintShop Pro X9, Adobe Photoshop Elements 14, Adobe Photoshop CC, ACD Systems ACDSee 20. You can also save memory snapshot files in the format JPC These JPC files are used by Java application developers.
PNM is a raster image category format. This is a bitmap bitmap created in Portable Any Map format. As you know, this format was intended from the very beginning to process some types of portable monochrome black and white images (PBM), color images (PPM) and grayscale images with shades of gray (PGM). Allows the inclusion of raster graphics data in the .PBM, .PGM or .PPM format. Such formats can provide an intermediate representation of data during the conversion of raster graphic files by different platforms. Separate applications support these three formats directly because they are defined as the PNM format. Able to be stored using binary data or ASCII text. PNM is the common format for the Netpbm package. It contains intermediate files that are used when it comes to converting several open source programs called Portable Bitmap. The PPM format was developed by J. Poskanzer. This is the easiest format for storing graphics. PNM files store one image. They do not apply compression. To view and process a bitmap image in PNM format, you can use programs such as GIMP, ImageMagick, Newera Graphics Converter Pro, XnViewMP. The same programs are able to convert images of this format.