Convert TGA to PGM

The Truevision Graphics Adapter (TGA) file extension, also known as TARGA (Truevision Advanced Raster Graphics Adapter), is a raster graphics file format. Introduced by Truevision Inc. in 1984, it was initially designed for their TARGA and VISTA graphic cards, which were among the first cards capable of displaying true color (24-bit) images. TGA files are widely used in various professional applications, including video editing, game development, and computer imaging, due to their ability to store high-quality graphics and support for features like alpha channels, gamma correction, and HDR imaging. TGA remains a popular choice for professionals in the industry.

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.