cascade r-cnn paper

Inobjectdetection,anintersectionoverunion(IoU)thresholdisrequiredtodefinepositivesandnegatives.Anobjectdetector,trainedwithlowIoUthreshold,e.g.0.5,usuallyproducesnoisydetections.However,detectionper-formancetendstodegradewithincreasingtheIoUthresh-olds.Twomainfactorsareresponsiblefort