[OSGeo-Discuss] How to assess rendering quality?

[Gilles Bassière]

Hi Michael,

I'm more concerned with subjective metrics, I actually plan to survey 
some users. The questionnaire will include some map samples and gather 
user preference for each criteria. My problem is to identify what 
questions/criteria should I ask to a user.

Gilles


Michael P. Gerlek wrote:
> Gilles-
>
> Is your idea to measure the quality by having a human look at outputs (subjective metrics) or automatically via some analysis routine (objective metrics)?
>
> -mpg
>
>  
>
>   
>> -----Original Message-----
>> From: discuss-bounces at lists.osgeo.org 
>> [mailto:discuss-bounces at lists.osgeo.org] On Behalf Of Gilles Bassière
>> Sent: Wednesday, October 10, 2007 3:01 AM
>> To: discuss at lists.osgeo.org
>> Subject: [OSGeo-Discuss] How to assess rendering quality?
>>
>> Hi list,
>>
>> I'm doing a comparative study of OpenSource cartographic servers 
>> (Mapserver, Geoserver and Mapnik). Beside raw performance and 
>> features, 
>> I'd like to assess the rendering quality, say how pretty 
>> produced maps 
>> are. Precisely, I'm interested in the quality of the drawing work, my 
>> point is not about symbology, nor styling of maps.
>>
>> I have some problems to find a set of objective criteria I could 
>> benchmark my servers against. So far, I have already identified the 
>> following:
>> - sharpness of details
>> - smoothness of lines
>> - uniformity of colors
>>
>> I'm open to any comments. Do you think these criteria are consistent 
>> regarding the purpose of my study? Does anyone have other criteria to 
>> suggest?
>>
>> Regards
>>
>> -- 
>> Gilles Bassiere
>> MAKINA CORPUS
>> 30 rue des Jeuneurs
>> FR-75011 PARIS
>> http://www.makina-corpus.com
>>
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-- 
Gilles Bassiere
MAKINA CORPUS
30 rue des Jeuneurs
FR-75011 PARIS
http://www.makina-corpus.com