Re: [brlcad-devel] DSP Questions

[Christopher S. M. <br...@ma...>]

On Jun 5, 2012, at 6:56 PM, Tom Browder wrote:

> On Tue, Jun 5, 2012 at 5:33 PM, Christopher Sean Morrison
> <br...@ma...> wrote:
> ...
>> It's 4 hex chars per cell.  *16-bit* unsigned.  2 hex chars make one byte (0->255).
> 
> Ah!  I've been looking at asc2pix and I think I got confused with the
> way I thought it works.  I'll go back and look again.

Note you could start with 8-bit data, like converting a png or pix to bw, then converting the bw from 8-bit to 16-bit using the 'cv' conversion command (cv huc nus ...).  That's a pretty common way to test it since 16-bit datasets aren't common outside of terrain data. Another way is to use the dem-g importer, which will create a dsp for you using the digital elevation model file format data (usgs has tons).

Cheers!
Sean