Need help opening a DEM file

[marcos9999]

I'm trying to work with a DEM file that is 11Gig in size. The height map of  mars. This file can be downloaded here. The height map when added to a 3D software will interpret the terrain of this map. However there seem to be a large degree of compression and that will interffere with the accuracy of the map.

This file should look like this:

But instead when oppend in PS looks like this and with way less resolution

I was told by someone I needed to enter this code in order to conver this file

Hi Marcos,

I think your software may be misinterpreting the data type of the pixels in the image. The label says this:

SAMPLE_TYPE                  = MSB_UNSIGNED_INTEGER

SAMPLE_BITS                  = 16

UNIT                         = METER

SCALING_FACTOR               = 0.25

OFFSET                       = -8000

Your help is appreciated!

[davescm]

That has to be a none standard TIFF file. The standard TIFF file format has a size limit of 4GB

Dave

[Warren Heaton]

I couldn't get the link for https://planetarymaps.usgs.gov/mosaic/Mars/HRSC_MOLA_Blend/Mars_HRSC_MOLA_BlendDEM_Global_200mp_v2.t... to load as expected.

Is this file BigTIFF?

If so, this page may be helfpul: https://www.loc.gov/preservation/digital/formats/fdd/fdd000328.shtml

[marcos9999]

Can PS open a big TIFF?

[marcos9999]

You can download at this page, the second link from the top on the left side

Mars MGS MOLA - MEX HRSC Blended DEM Global 200m v2 | USGS Astrogeology Science Center