W3C home > Mailing lists > Public > public-poiwg@w3.org > November 2011

Re: yaw, pitch and roll ? and position accuracy?

From: Thomas Wrobel <darkflame@gmail.com>
Date: Wed, 2 Nov 2011 16:00:40 +0100
Message-ID: <CADVvL4nX-oZebmSgm3w_Hq0ZpQ-E5prFX+1EzZDfd202trdXUw@mail.gmail.com>
To: "Seiler, Karl" <karl.seiler@navteq.com>
Cc: Mike Liebhold <mnl@well.com>, "public-poiwg@w3.org W3C" <public-poiwg@w3.org>
Ive been quite busy with many other things lately....but either I've
got the wrong end of the stick here (which is quite possible), or this
could be quite an oversight.

The bare minimum for AR requires both position and orientation
specified in the spec. Without yaw, pitch and roll specified,
positioning a 3d object accurately in the real world is essentially
impossible.

This isn't so much a presentation issue, but quite a fundamental one
to the association of any non-point based information to a real world
location. Both position and direction are needed for any complete
reference system to work.
That doesn't mean it always needs to be specified....a lack of
orientation info could be interpreted by a client as "always face
viewer".  But certainly the information needs to be there as an option
and I don't think it purely applies to 3d or AR use.
(for example, associating a image map tile from a satellite to a
location would also need a orientation specified)

-Thomas Wrobel

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On 1 November 2011 19:31, Seiler, Karl <karl.seiler@navteq.com> wrote:
> You said:
>  For AR, I'm assuming that a focal plane is the point of view.
> Notation for yaw pitch and roll are ideal for orientation of labels or
> graphics associated with specific orientation of a place or thing.
>
> So far, in general we have stayed away from the specification including explicit support for presentation aspects. Interesting tho. Perhaps it is a part of the places optional 3D description.
>
> _______________________________
> Karl Seiler
> Director Location Technology & Services
> NOKIA Places Content & Operations - Chicago
> (T)  +312-894-7231
> (M) +312-375-5932
>
> -----Original Message-----
> From: Mike Liebhold [mailto:mnl@well.com]
> Sent: Tuesday, November 01, 2011 11:54 AM
> To: Seiler, Karl
> Cc: public-poiwg@w3.org W3C
> Subject: Re: yaw, pitch and roll ? and position accuracy?
>
> On 11/1/11 8:05 AM, Seiler, Karl wrote:
>> What is an example use case for a Place specification that includes yaw, pitch and roll?
>
>  For AR, I'm assuming that a focal plane is the point of view.
> Notation for yaw pitch and roll are ideal for orientation of labels or
> graphics associated with specific orientation of a place or thing.
>
> For robotics, same thing plus, orientation for best direct kinetic
> access to a place or thing.
>
> To name a couple ...
>
>
> Thanks Karl.
>
>
>>
>> Yes, CM and MM accuracy is certainly here given the amount of Lidar place mapping this is in turn leading to high rez-3D models of places. This gets you to navigating to the entrance door handle for sight impaired and robotics.
>>
>> _______________________________
>> Karl Seiler
>> Director Location Technology&  Services
>> NOKIA Places Content&  Operations - Chicago
>> (T)  +312-894-7231
>> (M) +312-375-5932
>>
>> -----Original Message-----
>> From: Mike Liebhold [mailto:mnl@well.com]
>> Sent: Monday, October 31, 2011 6:38 PM
>> To: public-poiwg@w3.org W3C
>> Subject: yaw, pitch and roll ? and position accuracy?
>>
>> Very sorry to jump in so late in the dialog. ( i've been buried elsewhere)
>>
>> But, I have a couple of quick questions about the core data model:
>>
>> Besides latitude, longitude and altitude attributes of position, What
>> has been decided about yaw, pitch and roll?
>>
>> Can someone tell me if i'm correct in  assuming that the nominal CRS
>> would allow for a designation of the accuracy of the position. ( I"m
>> seeing the emergence of use cases requiring millimeter accurate positioning)
>>
>> Many thanks,
>>
>> Mike Liebhold
>>
>>
>>
>> The information contained in this communication may be CONFIDENTIAL and is intended only for the use of the recipient(s) named above.  If you are not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication, or any of its contents, is strictly prohibited.  If you have received this communication in error, please notify the sender and delete/destroy the original message and any copy of it from your computer or paper files.
>>
>
>
> The information contained in this communication may be CONFIDENTIAL and is intended only for the use of the recipient(s) named above.  If you are not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication, or any of its contents, is strictly prohibited.  If you have received this communication in error, please notify the sender and delete/destroy the original message and any copy of it from your computer or paper files.
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Received on Wednesday, 2 November 2011 15:01:21 UTC

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