Convert PGM to VICAR

The Portable Graymap (PGM) file extension, originating in the late 1980s as part of the Netpbm project, stands for "Portable Gray Map". It serves as a simple, versatile format for grayscale images, enabling easy reading and writing by various programs. Due to its straightforward structure and plain text encoding, it's often used in academic and research settings where ease of parsing and accessibility are crucial. PGM files store grayscale images in a compact, efficient manner, making them an essential tool for image processing tasks.

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.