Convert PGM to X AVS

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 X file extension, also known as Application Visualization System X Image, is used for storing high-quality, true-color images with transparency. Developed by Stardent Computer for UNIX systems, it supports 32 bits per pixel, allowing for over 16,7 million colors with an alpha channel for transparency. This format is particularly valuable in scientific visualization and complex data representation. Despite newer formats, its uncompressed nature ensures image integrity without compression-related degradation.