Convert PEF to SIXEL

The PEF (Pentax Electronic File) is a raw image file format used by Pentax digital cameras. It contains unprocessed data directly from the camera's image sensor, allowing for greater post-processing flexibility and higher-quality images. Introduced by Pentax, this format retains more image information compared to compressed formats like JPEG, making it popular among professional photographers. PEF files can be opened and edited with various software, including Adobe Photoshop and Pentax's own Digital Camera Utility.

The SIXEL, or "six pixels", is a bitmap graphics format created by Digital Equipment Corporation (DEC) for their terminals and printers. Initially designed for DEC dot matrix printers like the LA50, it enabled the efficient transfer of bitmap graphics using a series of ASCII characters. Each character represents a 6-pixel high row, making it suitable for 7-bit serial communication. This format was later adapted for modern terminal emulators, extending its utility beyond its original scope.