[x3d-public] Extensible 3D (X3D), ISO/IEC 19775-1:2013, 3 Definitions, acronyms, and abbreviations: got voxel?

[Richard F. Puk]

Hi, Don --

The SOED definition  is definitely clear to me:

"Computing. (In modelling or graphic simulation) each of an array of elements of volume that constitute a notional three-dimensional space; esp. each of an array of discrete elements into which a representation of a three-dimensional object is divided."

  -- Dick

/******************************************
| Richard F. Puk, Ph.D., President
| Intelligraphics Incorporated
| 7644 Cortina Court
| Carlsbad, CA  92009-8206
| Tel: +1-760-753-9027  Mobile:  +1-760-809-9027
| Email:  puk at igraphics.com
\****************************************** 




-----Original Message-----
From: Don Brutzman [mailto:brutzman at nps.edu] 
Sent: Tuesday, July 21, 2020 2:15 PM
To: Richard F. Puk; 'Nicholas Polys'
Cc: 'X3D Graphics public mailing list'
Subject: Re: Extensible 3D (X3D), ISO/IEC 19775-1:2013, 3 Definitions, acronyms, and abbreviations: got voxel?

Thanks Dick.  Please share SOED definition of voxel (and url if available) so that we can see if everyone agrees the definition is clear.

I was in a geospatial meeting earlier today where they announced they were working on a definition for voxel.  Will compare when that emerges.

Point of comparison follows from wiktionary:

[1] wiktionary: voxel
     https://en.wiktionary.org/wiki/voxel

"(computer graphics) the three-dimensional analogue of a pixel; a volume element representing some numerical quantity, such as the colour, of a point in three-dimensional space, used in the visualisation and analysis of three-dimensional (especially scientific and medical) data"

On 7/21/2020 10:40 AM, Richard F. Puk wrote:
> 
> Hi, Don --
> 
> Both pixel and voxel are defined in the SOED. However, the definition of pixel is problematical while the definition of voxel  is clear and is as intended in the spec. Therefore, the term pixel does need a definition while the definition of voxel is as defined in the SOED and therefore does not need a definition.

meanwhile, unchanged:

[2] Extensible 3D (X3D) Part 1: Architecture and base components
     clause 3 Terms, definitions, acronyms, and abbreviations, 3.1.53 pixel
     https://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/glossary.html#Pixel

"one element of an image specified as a matrix of colour elements"

TODO: we should add lower-case bookmarks as well.

[3] wiktionary, pixel
     https://en.wiktionary.org/wiki/pixel#English

1. One of the tiny dots that make up the representation of an image in a computer's memory.
2. One of the squares that make up a pixel art work or a zoomed in image in a computer.

all the best, Don
-- 
Don Brutzman  Naval Postgraduate School, Code USW/Br       brutzman at nps.edu
Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA   +1.831.656.2149
X3D graphics, virtual worlds, navy robotics http://faculty.nps.edu/brutzman