Convert CRW to PGM

The CRW file extension stands for Canon Raw CIFF Image Format, a raw image file format used by Canon digital cameras. Developed to store uncompressed and unprocessed images, CRW files offer high-quality image data that can be edited with Canon's software or third-party editors like Adobe Photoshop. Introduced by Canon, this format has been largely superseded by newer formats like CR2 and CR3 but remains significant in the history of digital photography for its role in preserving image integrity.

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.