Convert G4 to VICAR

The G4 file extension, standing for CCITT Group 4 Fax Image, is a specialized format used primarily for storing black-and-white facsimile (fax) images. Its origins trace back to the Consultative Committee for International Telegraphy and Telephony (CCITT), now known as the ITU-T, which developed the Group 4 standard in the 1980s to improve fax transmission efficiency over digital networks. This format employs a high compression ratio to reduce file size while maintaining image quality, making it ideal for archiving documents and transmitting faxes in professional and business environments.

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.