ACT-NET: Asymmetric Co-Teacher Network For Semi-Supervised Memory-Efficient Medical Image Segmentation

Object detection has achieved good performance on perspective images. However, a general object detector does not maintain this performance when applied to a 360� image in a single equirectangular projection (ERP) or multi-projection representation because of the distortion in the high-latitude region or discontinuity at the boundaries. in this paper, we proposed dual-ERP, which is a multi-view ERP representation, as the network input for 360� object detection in training and inference. Dual-ERP combines the advantages of single ERP and multi-projection representations, and it can easily be integrated with existing object detectors. The experimental results showed that compared to other representations, dual-ERP significantly improved the performance of different baseline object detectors.