Convert GIF to PHM

The Graphics Interchange Format (GIF) is a bitmap image format developed by CompuServe in 1987. It is widely used for its support of animated images, allowing for the compression of graphics with low file sizes and without compromising quality. It's particularly popular on the internet for memes, short animations, and simple graphics due to its ability to loop animations seamlessly. GIFs support up to 256 colors and use the LZW compression algorithm to minimize file size. The format's historical significance lies in its ability to efficiently store and transmit images in an era of slower internet speeds and remains a staple in digital communication and web design today.

The PHM file extension stands for Portable Float-map Image (16-bit half), a format used for storing high dynamic range (HDR) images with 16-bit half-precision floating-point values. This format is particularly useful in applications requiring precise color representation and extensive dynamic range, such as computer graphics, image processing, and scientific visualization. Originating from the Portable FloatMap (PFM) format, PHM was developed to provide a more efficient storage solution by utilizing half-precision floats, thereby reducing file size while maintaining significant detail and accuracy.