This format was created by Nokia for use in its proprietary phones. A bitmap image was used to transfer image files between devices over a wireless connection. It was mainly used when exchanging multimedia text messages that support inserting pictures.
JP2 is a bitmap image format JPEG 2000. This can be a picture, an image from a surveillance camera, digital fax and other. In JPEG 2000 to compress the file using the technology of wavelet transform. This allows for a smoother and sharper image and the file size compared to JPEG for the same quality is lower.