[bug-GIFT] blocking "color-blocks" in classical IDF

[Joris Heuberger]

hi,
i have built a PHP interface for gift that correctly parses all the mrml 
interactions (not like the interface on the viper pages that incorrectly 
analyses the sub algorithms).
it seems that the 'cui-block-color-blocks' attribute can lead to an empty 
result if it is set to 'true' on the server available at viper.unige.ch.

here is the request i run:

<?xml version="1.0" standalone="no"?><!DOCTYPE mrml SYSTEM 
"http://isrpc85.epfl.ch/Charmer/code/mrml.dtd";> <mrml 
session-id="b32158d8-a626-4802-868c-6f55e41d1cb9">  <configure-session 
session-id="b32158d8-a626-4802-868c-6f55e41d1cb9"> <algorithm 
algorithm-id="a-cidf" algorithm-type="a-cidf" 
collection-id="c-4-42-22-20-4-103-2-139-0" cui-pr-percentage-of-features="70" 
cui-block-color-blocks="true" cui-block-texture-blocks="false" 
cui-block-texture-histogram="false" cui-block-color-histogram="false" > 
</algorithm>  </configure-session> <query-step 
session-id="b32158d8-a626-4802-868c-6f55e41d1cb9" result-size="10" 
result-cutoff="0.0" collection="c-4-42-22-20-4-103-2-139-0" 
algorithm-id="a-cidf"> <mpeg-7-qbe></mpeg-7-qbe>  
<user-relevance-element-list> <user-relevance-element 
image-location="http://viper.unige.ch/images/corel/photographs_thumbnails/various_textures/593098_thumbnail_jpg.jpg";
 
thumbnail-location="" 
user-relevance="1"/></user-relevance-element-list></query-step></mrml>


and the result i get:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>  <mrml 
just-for-test="and-of-course-for-fun" 
session-id="b32158d8-a626-4802-868c-6f55e41d1cb9" >  <cui-time-stamp 
calendar-time="Fri Jul 9 11:28:45 2004 " />  <acknowledge-session-op 
session-id="b32158d8-a626-4802-868c-6f55e41d1cb9" />  <query-result >  
<query-result-element-list />  </query-result>  <cui-time-stamp 
calendar-time="Fri Jul 9 11:28:45 2004 " /> </mrml>


i receive the same error for the other images i tried.

when blocking another feature group or even all three others the system 
delivers correct results.

i have a local version of gift-0.1.11 installed and here it seems to work 
properly.
any ideas on what the problem might be?

regards,

joris