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IEICE TRANSACTIONS on Information

Two-Path Object Knowledge Injection for Detecting Novel Objects With Single-Stage Dense Detector

KuanChao CHU, Hideki NAKAYAMA

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Summary :

We present an effective system for integrating generative zero-shot classification modules into a YOLO-like dense detector to detect novel objects. Most double-stage-based novel object detection methods are achieved by refining the classification output branch but cannot be applied to a dense detector. Our system utilizes two paths to inject knowledge of novel objects into a dense detector. One involves injecting the class confidence for novel classes from a classifier trained on data synthesized via a dual-step generator. This generator learns a mapping function between two feature spaces, resulting in better classification performance. The second path involves re-training the detector head with feature maps synthesized on different intensity levels. This approach significantly increases the predicted objectness for novel objects, which is a major challenge for a dense detector. We also introduce a stop-and-reload mechanism during re-training for optimizing across head layers to better learn synthesized features. Our method relaxes the constraint on the detector head architecture in the previous method and has markedly enhanced performance on the MSCOCO dataset.

Publication
IEICE TRANSACTIONS on Information Vol.E106-D No.11 pp.1868-1880
Publication Date
2023/11/01
Publicized
2023/08/02
Online ISSN
1745-1361
DOI
10.1587/transinf.2022EDP7216
Type of Manuscript
PAPER
Category
Image Recognition, Computer Vision

Authors

KuanChao CHU
  University of Tokyo
Hideki NAKAYAMA
  University of Tokyo

Keyword