Added checking of descriptor generator and interest operator strings  before starting the job. (This is really only a problem with the  descriptor string, the code would have finished finding interest points  then crashed when trying to calculate descriptor) I also believe this is  what pedersen was referencing in Ticker #5.
Added checking of descriptor generator and interest operator strings 
before starting the job. (This is really only a problem with the 
descriptor string, the code would have finished finding interest points 
then crashed when trying to calculate descriptor) I also believe this is 
what pedersen was referencing in Ticker #5.



AveRapina/visionworkbench,fengzhyuan/visionworkbench,DougFirErickson/visionworkbench,DougFirErickson/visionworkbench,DougFirErickson/visionworkbench,fengzhyuan/visionworkbench,fengzhyuan/visionworkbench,fengzhyuan/visionworkbench,AveRapina/visionworkbench,DougFirErickson/visionworkbench,DougFirErickson/visionworkbench,fengzhyuan/visionworkbench,AveRapina/visionworkbench,fengzhyuan/visionworkbench,AveRapina/visionworkbench,AveRapina/visionworkbench,AveRapina/visionworkbench,fengzhyuan/visionworkbench,DougFirErickson/visionworkbench