Convert RLE to PPM

The RLE (Run-Length Encoded) file extension, associated with the Utah Raster Toolkit, is a lossless image compression format used primarily for 4 or 8-bit bitmap images. Developed at the University of Utah, it employs run-length encoding to compress data by reducing consecutive repeated values, making it efficient for simple graphics like icons and line drawings. Historically, it was widely used in early versions of Windows and CompuServe software.

The Portable Pixmap (PPM) file extension, an image format within the Netpbm family, stores simple, uncompressed images. Introduced in the late 1980s, PPM supports RGB color and grayscale images, making it suitable for basic image processing and conversion tasks. Its plain text encoding simplifies debugging and data manipulation, although its lack of compression results in larger file sizes compared to modern formats. As such, PPM finds limited use in contemporary applications, mainly in educational and experimental settings where ease of implementation and readability are prioritized.