Added script to reproduce results from loop closure detection paper. Added option to show Recall at 100% precision directly from rtabmap-console. Fixed retrieval not working on loop closure detection mode-only. Fixed showLogs.m error with Octave.

archive/2010-LoopClosure/README.md

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+
+ To reproduce results (based on parameters of this [paper](https://introlab.3it.usherbrooke.ca/mediawiki-introlab/images/b/bc/TRO2013.pdf)):
+ 
+ ```
+ rtabmap-console \
+       --Rtabmap/StatisticLogged true\
+       --Rtabmap/StatisticLoggedHeaders false\
+       --Kp/DetectorStrategy 0\
+       --Rtabmap/MemoryThr 300\
+       --Rtabmap/LoopRatio 0.9\
+       --SURF/HessianThreshold 150\
+       --Mem/STMSize 30\
+       --Vis/MaxFeatures 400\
+       --Kp/TfIdfLikelihoodUsed false\
+       --Kp/MaxFeatures 400\
+       --Kp/BadSignRatio 0.25\
+       --Mem/BadSignaturesIgnored true\
+       --Mem/RehearsalSimilarity 0.20\
+       --Mem/RecentWmRatio 0.2\
+       -gt "~/Downloads/UdeS_1Hz.png"\
+       ~/Downloads/UdeS_1Hz
+ ```
+Adding the ground truth file here is optional to show recall at 100% precision at the end of the process directly without using the octave/MATLAB script below. For NewCollege and CityCentre datasets, `rtabmap-imagesJoiner` can be used to assemble the left and right images together.
+ 
+ To analyze with Octave/MATLAB, drop `LogF.txt` and `LogI.txt` generated files from command above in ShowLogs directly, then execute `showLogs.m`.