Importing non-traditional 512x512,1024 x1024 Height Maps

Hello All,

I am currently working with some Digital Terrain Models from mars. I have imported them into blender and produced 16 bit tiff images for the height maps. However, none of these models are your typical 512 x 512 images sizes.

I have opened the files in Photoshop and resized them to 512 x 512 but as you can imagine a file that was originally 130 x 512 looks awful. The terrain is bundled up and takes away from the original idea of having realistic mars terrain.

How can import these height map into unity properly?