Re: [boost] GIL Review

From: Ullrich Koethe (koethe_at_[hidden])
Date: 2006-11-01 17:42:31

Fernando Cacciola wrote:
>>Calling the concept itself pixel_value would just be consequent,
> 
> 
> Since a few people pointed put that the value of a pixel is not neccesarily 
> a color, I like this suggestion.
> 

Yes, using the term 'color' for a depth or gradient value might be very 
confusing.

> 
> Now, off the pixel/color topic.
> rom the Quicktime format disccusion: is it possible to supersample (rather 
> than subsample) an image? That is, to take two or more consequtive pixels in 
> a row and pretend is just one pixel? 

Regarding terminology: 'supersampling' is commonly understood as creating 
more sampling points than were originally available, whereas 'subsampling' 
reduces the number of sampling points (opposite to your use of the term).

I think it is possible to do it by means of an appropriate pixel value 
adapter, but it may be too slow for being of practical value. I'd 
carefully benchmark it against a solution where the representation is 
converted into something more convenient only once (and converted back 
right before storage or display).

Regards
Ulli

-- 
  ________________________________________________________________
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| Ullrich Koethe  Universitaet Hamburg / University of Hamburg   |
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