How hard can it be? Estimating the difficulty of visual search in an image.

Radu Tudor Ionescu Bogdan Alexe Marius Leordeanu Marius Popescu Dim P. Papadopoulos Vittorio Ferrari How hard can it be? Estimating the difficulty of visual search in an image. 2017 abs/1705.08280 CoRR http://arxiv.org/abs/1705.08280 db/journals/corr/corr1705.html#IonescuALPPF17