Convert VICAR to G3

The VICAR (Video Image Communication and Retrieval) file extension is a specialized raster image format developed by NASA's Jet Propulsion Laboratory in 1966 to manage and process imaging data from unmanned planetary missions. It supports multi-dimensional scientific data, including spectroscopic, hyperspectral, and radar imagery, making it suitable for space exploration, biomedical imaging, and geological studies. The format includes metadata for data integrity and usability, and the software system is now open-source.

The G3 file extension refers to the CCITT Group 3 Fax Image, a standardized format developed by the Consultative Committee for International Telegraphy and Telephony (CCITT), now known as ITU-T. This format was created to efficiently compress black-and-white fax documents for transmission over telephone lines. It employs a method called Modified Huffman Coding for data compression, enabling reduced transmission time and bandwidth usage. G3 was widely adopted in the 1980s and 1990s as the primary standard for fax transmissions, ensuring compatibility across different fax machines and systems.