DDE-Net: Dynamic Density-Driven Estimation for Arbitrary-Oriented Object Detection

Author:

Wang Boyu1ORCID,Jing Donglin2ORCID,Xia Xiaokai1,Liu Yu3,Xu Luo1,Cheng Jiangmai4ORCID

Affiliation:

1. Artificial Intelligence Institute of China Electronics Technology Group Corporation, Beijing 100041, China

2. Beijing Key Laboratory of Embedded Real-Time Information Processing Technique, School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China

3. State Key Laboratory of Software Development Environment, Beihang University, Beijing 100191, China

4. The 32nd Research Institute of China Electronics Technology Group Corporation, Shanghai 201808, China

Abstract

Compared with general images, objects in remote sensing (RS) images typically exhibit a conspicuous diversity due to their arbitrary orientations. However, many of the prevalent detectors generally apply an inflexible strategy in setting the angles of anchor, ignoring the fact that the number of possible orientations is predictable. Consequently, their processes integrate numerous superfluous angular considerations and hinder their efficiency. To deal with this situation, we propose a dynamic density-driven estimation network (DDE-Net). We design three core modules in DDE-Net: a density-map and mask generation module (DGM), mask routing prediction module (MRM), and spatial-balance calculation module (SCM). DGM is designed for the generation of a density map and mask, which can extract salient features. MRM is for the prediction of object orientation and corresponding weights, which are used to calculate feature maps. SCM is used to affine transform the convolution kernel, which applies an adaptive weighted compute mechanism to enhance the average feature, so as to balance the spatial difference to the rotation feature extraction. A broad array of experimental evaluations have conclusively shown that our methodology outperforms existing state-of-the-art detectors on common aerial object datasets (DOTA and HRSC2016).

Publisher

MDPI AG

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