Fast OWDETR: transformer for open world object detection

• Main Author: Chen, Xuanying
• Other Authors: Tan Yap Peng
• Format: Thesis-Master by Coursework
• Language: English
• Published: Nanyang Technological University 2022
• Subjects: Engineering::Computer science and engineering::Computing methodologies::Image processing and computer vision
• Online Access: https://hdl.handle.net/10356/162462
• Institution: Nanyang Technological University

Object detection is one of the basic computer vision tasks. Recently, a more challenging task, called open world object detection, which aims to identify novel unknown objects and incrementally learn to classify them when labels are available has been proposed. Open World Object Detector (ORE) and Open-world Detection Transformer (OWDETR) are two methodologies proposed to address the open world task, while they are both time-consuming in training and with shortcomings. Aiming to improve the training speed and detection performance, we propose Fast OWDETR based on OWDETR which is a transformer-based approach. Speci cally, we replace the attentiondriven pseudo labeling mechanism in OWDETR with a logits-based one, and change the standard Deformable DETR into Deformable DETR with box re nement. For shorter transferring time between tasks, we present an incremental learning approach which dynamically reduces the number of trainable parameters in the classi cation head while keeping the backbone frozen after initial training. Our extensive experiments show that Fast OWDETR can achieve detection performance comparable with OWDETR while using less training time within tasks and between tasks.