Every category of read-world corruption contains five severity levels. The CE(Corruption Error) trend of models in the same corruption should same as severity level increasing. But we find abnormal trend of some models as the severity level increasing. We show CE trend and use arrows to point out abnormal trend int the follow figure, e.g., the CE of Cascade R-CNN is drop when severity levels increase from four to five in F(Fog) corruption. The average CE trend show in this figure. The average CE trend is average coco CE trend and bdd100k CE trend.
The average CE trend is different from only one database CE trend. For example, this figure is coco CE trend that is different from average CE trend.