[LINK] Demo of photosynth

[Kim Holburn]

On 2007/Jun/12, at 3:00 PM, Saliya Wimalaratne wrote:
> On Tue, Jun 12, 2007 at 01:55:18AM +1000, Stephen Edgar wrote:
>> On June 2007 10:20 PM, Adam Todd wrote:
>> The BBC is collaborating with Microsoft Live Labs Photosynth to  
>> create three- dimensional representations of some of the most  
>> dramatic buildings in Britain by combining hundreds of different  
>> photographs. This is an exciting 'research and development'  
>> project which gives users an insight into future photo sharing  
>> possibilities. Most of these locations are featured in the new BBC  
>> series 'How We Built Britain' which explores Britain's past  
>> through its buildings and the lives lived in and around them.
>
> FWIW; I didn't think that the representation was 3D.

Partly correct.  They create a 2D manifold of the visible 2D surface  
in 3D.

> While being 'very interesting', the impression I took from the  
> demonstration
> was that the construction was of two-dimensional views - and that  
> selecting
> another viewpoint simply brought forward another view.

Yeah but that whole space was 3D and they were selecting viewpoints  
and viewing directions in the 3D space.  Right at the beginning of  
the photosynth demo he flies around the 3D model.

> This is a little different to constructing depth from stereoscopic or
> even multiple flat 2D images (which is, by the way, being done - but
> mainly in the mining industry)

--
Kim Holburn
IT Network & Security Consultant
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Democracy imposed from without is the severest form of tyranny.
                           -- Lloyd Biggle, Jr. Analog, Apr 1961