EfficientDet: Scalable and Efficient Object Detection

Mingxing Tan, Ruoming Pang, Quoc V. Le
2020 2020 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)  
Model efficiency has become increasingly important in computer vision. In this paper, we systematically study neural network architecture design choices for object detection and propose several key optimizations to improve efficiency. First, we propose a weighted bi-directional feature pyramid network (BiFPN), which allows easy and fast multi-scale feature fusion; Second, we propose a compound scaling method that uniformly scales the resolution, depth, and width for all backbone, feature
more » ... , and box/class prediction networks at the same time. Based on these optimizations and EfficientNet backbones, we have developed a new family of object detectors, called EfficientDet, which consistently achieve much better efficiency than prior art across a wide spectrum of resource constraints. In particular, with single-model and single-scale, our EfficientDet-D7 achieves state-of-the-art 52.2 AP on COCO test-dev with 52M parameters and 325B FLOPs 1 , being 4x -9x smaller and using 13x -42x fewer FLOPs than previous detector. Code is available at https://github.com/google/ automl/tree/master/efficientdet.
doi:10.1109/cvpr42600.2020.01079 dblp:conf/cvpr/TanPL20 fatcat:nohfrx22jvb63n37irx65lroou