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View Full Version : 16 bit grey output, what format?



starbase1
04-12-2003, 04:31 AM
I need to produce a 16 bit grey scale image out of lightwave, and I am getting lost in the maze of formats it supports!

It's an image I intend to load back in as a displacement map, so it does not have to be understood by any other application.

Can anyone save me from working through the one at at time please?!?!

Nick:confused:

BeeVee
04-13-2003, 12:48 PM
Are you sure you want and need a 16-bit image? A displacement map is normally created with an 8-bit image in LightWave...

Personally, I would use PNG or IFF...

B

starbase1
04-13-2003, 03:58 PM
Thanks, yes I think I do - It would at least make life easier!

The situation is as follows:

I am looking at producing accurate landscapes from the Mars Laser Orbiter data, which is a 16 bit height field. But the problem is that it's a 128 megabyte chunk!

It's also in the NASA PDS format, which is not well supported in 16 bit mode.

Now, I can JUST get the image loaded into lightwave, but I am very limited in what I can do, once it's in there, so using it directly is not possible.

So I am trying to export it in smaller chunks, in a form I can edit by conventional means.

If I drop down to 256 grays, I will get very nasty terracing in the small chunks of landscape.

I'm using the image loader at:
http://amber.rc.arizona.edu/lw/elevations.htm

Lindly provided by Marvin Landis.

I have also tried using the Demscape on a subset STM dataset, but that slows down hugely with the amount of data I wish to handle.

Cheers,
Nick

Red_Oddity
04-14-2003, 03:34 AM
RLA supports 16/32 and FP.

Turn on the Image Filter Deluxe RLA and choose your depth.
And use the Image Filter Extended RLA Export.

Other formats you could use are SGI64 (16 bit per channel)
Flexible Format (Floating point)
Tif LogLuv (Floating point aswell)
Radiance/HDRI (Floating point)

starbase1
04-14-2003, 04:18 AM
Thanks Red, that's exactly what I needed!

Nick