Convert BMP to PGM

The BMP (Bitmap Image) file extension is a raster graphics format used primarily for storing digital images. Developed by Microsoft, BMP files retain high image quality due to their lack of compression, making them ideal for preserving detailed and colorful images. Introduced in the early days of Windows, BMP's simplicity and widespread compatibility have cemented its role in digital imaging, despite being superseded by more efficient formats in many applications.

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.