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Actually this should not happen. Which language are you using?

I am guessing you are using SURF-features? You can call the constructor (SURF::SURF(double hessianThreshold, int nOctaves=4, int nOctaveLayers=2, bool extended=true, bool upright=false )) explicitly and setting extended to 'true' (which is also the default), maybe that helps.

Actually this should not happen. Which language are you using?

I am guessing you are using SURF-features? You can call the constructor (SURF::SURF(double hessianThreshold, int nOctaves=4, int nOctaveLayers=2, bool extended=true, bool upright=false )) explicitly and setting extended to 'true' true (which is also the default), maybe that helps.

Edit I just recognized that the standard-constructor SURF() sets extended to false while the overloaded constructor with more parameters sets them default to true. Maybe this plays a role here...