How can I import external images into Geomorph?
You should use a software which recognizes the file format of the external image, can scale it to a suitable size and can save PNG files. Geomorph reads 128, 256, 512, 1024, 2048 or 4096 pixels wide square images. It doesn’t scale or crop images. However, it converts RGB to greyscale images, and 8 bits (256 shades) greyscale images to 16 bits images (65536 shades). The Gimp is a good choice to scale or crop most 8 bits / channel images, RGB or greyscale, and save it in the PNG 8 bits / channel format that Geomorph can read. Using the “smooth” tool with a small radius in Geomorph would blur the apparent stratification of a newly converted 256 shades image to a 65536-shade image. Use the “noise” tool to add high frequencies, for a more natural look.
