Inthispaper,weproposeanaccurateedgedetectorusingricherconvolutionalfeatures(RCF).Sinceobjectsinnaturalimagespossessvariousscalesandaspectratios,learningtherichhierarchicalrepresentationsisverycriticalforedgedetection.CNNshavebeenprovedtobeeffectiveforthistask.Inaddition,theconvolution