将分类目标融入超分辨,提升雷达图像识别准确率。
A Classification-Aware Super-Resolution Framework for Ship Targets in SAR Imagery
- 设计兼顾图像质量和分类性能的损失函数
- 在SAR图像上实现分辨率提升与分类精度双提高
- 适合遥感、安防等领域目标识别任务
高分辨率图像对视觉识别任务(如分类、检测、分割)的性能提升至关重要。在遥感与监控等领域,低分辨率图像常限制自动化分析的准确性。为此,超分辨(SR)技术被广泛用于从低分辨率输入重建高分辨率图像。传统方法仅基于像素级指标提升图像质量,未充分探索超分辨结果与下游分类性能之间的关系。本文探讨了将分类目标直接融入超分辨过程是否能进一步提升分类准确率。提出一种新方法,通过优化同时考虑图像质量与分类性能的损失函数,提升合成孔径雷达(SAR)图像的分辨率。实验表明,该方法在科学验证的图像质量指标上表现更优,同时显著提升分类准确率。
原文摘要 · Abstract (English)
High-resolution imagery plays a critical role in improving the performance of visual recognition tasks such as classification, detection, and segmentation. In many domains, including remote sensing and surveillance, low-resolution images can limit the accuracy of automated analysis. To address this, super-resolution (SR) techniques have been widely adopted to attempt to reconstruct high-resolution images from low-resolution inputs. Related traditional approaches focus solely on enhancing image quality based on pixel-level metrics, leaving the relationship between super-resolved image fidelity and downstream classification performance largely underexplored. This raises a key question: can integrating classification objectives directly into the super-resolution process further improve classification accuracy? In this paper, we try to respond to this question by investigating the relationship between super-resolution and classification through the deployment of a specialised algorithmic strategy. We propose a novel methodology that increases the resolution of synthetic aperture radar imagery by optimising loss functions that account for both image quality and classification performance. Our approach improves image quality, as measured by scientifically ascertained image quality indicators, while also enhancing classification accuracy.
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