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revision 1.57 by tjl, Sat Mar 29 08:04:36 2003 UTC revision 1.58 by tjl, Sat Mar 29 08:17:57 2003 UTC
# Line 1233  complex, unfamiliar pictures can be reme Line 1233  complex, unfamiliar pictures can be reme
1233  and that recognition  and that recognition
1234  performance decreases very little over time.  performance decreases very little over time.
1235    
1236    In order to evaluate the recognizability of our procedurally generated
1237    textures,
1238    
1239    - need to compare to something
1240    
1241    - images not good, can't generate infinite supply easily, too much
1242      semantics
1243    
1244    - thus, use solid colors even though know not really good.
1245    
1246  We have conducted an experiment in a similar setting comparing  We have conducted an experiment in a similar setting comparing
1247  the recognition performance of our textures with solid color backgrounds.  the recognition performance of our textures with solid color backgrounds.
1248    
1249    
1250    
1251  Five participants performed the experiment in both conditions  Five participants performed the experiment in both conditions
1252  (in random order).  (in random order).
1253    
# Line 1252  and 15 distractor backgrounds in a rando Line 1265  and 15 distractor backgrounds in a rando
1265  having the participant answer ``old'' or ``new'' for each one.  having the participant answer ``old'' or ``new'' for each one.
1266  The time for answers was not limited.  The time for answers was not limited.
1267    
1268  The results are summarized below  The results are summarized in Table~\ref{tableresults}
1269  (percentage of trials and reaction time in seconds):  
1270    \begin{table}
1271    \def\numres#1#2{#1 (#2s)}%
1272  \begin{center}  \begin{center}
1273  \begin{tabular}{c|cc|cc}  \begin{tabular}{l|cc|cc}
1274        & \multicolumn{2}{c|}{textures \% (RT)}  & \multicolumn{2}{c}{colors \% (RT)} \\        & \multicolumn{2}{c|}{\sc textures}  & \multicolumn{2}{c}{\sc colors} \\
1275        & correct  & incorrect & correct & incorrect \\        & correct  & incorrect & correct & incorrect \\
1276  \hline  \hline
1277  old   & 84 (3.0) & 16 (5.6) & 43 (3.4) & 57 (4.0) \\  seen   & \numres{84}{3.0} & \numres{16}{5.6} & \numres{43}{3.4} & \numres{57}{4.0} \\
1278  new   & 72 (2.6) & 28 (5.5) & 71 (2.8) & 29 (4.1) \\  not seen   & \numres{72}{2.6} & \numres{28}{5.5} & \numres{71}{2.8} & \numres{29}{4.1} \\
1279  \hline  \hline
1280  total & 78 (2.8) & 22 (5.5) & 57 (3.1) & 43 (4.1)  total & \numres{78}{2.8} & \numres{22}{5.5} & \numres{57}{3.1} & \numres{43}{4.1}
1281  \end{tabular}  \end{tabular}
1282  \end{center}  \end{center}
1283    \caption{
1284    \label{tableresults}
1285    (percentage of trials and reaction time in seconds):
1286    }
1287    \end{table}
1288    
1289  %80, 53 fail to bring out the results correctly. Should  %80, 53 fail to bring out the results correctly. Should
1290  %use mutual information or something like that. In colors, the subject  %use mutual information or something like that. In colors, the subject

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