用改进的GAN提升X光片清晰度,同时降低传输带宽。
Efficient Medicinal Image Transmission and Resolution Enhancement via GAN
- 用Real-ESRGAN预处理低分辨率图像,减少传输负担。
- 在接收端用优化模型复原图像,实现高保真细节与降噪。
- 适合医疗影像传输与诊断质量要求高的场景。
X射线成像在医学诊断中不可或缺,但固有的噪声和分辨率限制会掩盖关键诊断细节。黑白X光片需在降噪与保留高频细节之间取得平衡,以清晰呈现软组织和骨边缘。传统方法如CNN及早期超分辨率模型ESRGAN在高频率细节保持和噪声控制方面表现不佳。本文提出一种高效方案,通过将X光图像预处理为低分辨率文件,利用改进版Real-ESRGAN(针对真实图像退化优化)在接收端重建高质量图像。该模型结合残差嵌套密集块、感知损失与对抗性损失,有效抑制噪声并保留细节。进一步针对黑白图像的噪声与对比特性进行微调,显著降低伪影而不损失结构。实验表明,本方法在峰值信噪比(PSNR)与结构相似性(SSIM)等指标上优于现有CNN与ESRGAN模型,且大幅降低网络带宽需求。定量与定性评估均证实其在诊断级X光图像重建与高效传输中的潜力。
原文摘要 · Abstract (English)
While X-ray imaging is indispensable in medical diagnostics, it inherently carries with it those noises and limitations on resolution that mask the details necessary for diagnosis. B/W X-ray images require a careful balance between noise suppression and high-detail preservation to ensure clarity in soft-tissue structures and bone edges. While traditional methods, such as CNNs and early super-resolution models like ESRGAN, have enhanced image resolution, they often perform poorly regarding high-frequency detail preservation and noise control for B/W imaging. We are going to present one efficient approach that improves the quality of an image with the optimization of network transmission in the following paper. The pre-processing of X-ray images into low-resolution files by Real-ESRGAN, a version of ESRGAN elucidated and improved, helps reduce the server load and transmission bandwidth. Lower-resolution images are upscaled at the receiving end using Real-ESRGAN, fine-tuned for real-world image degradation. The model integrates Residual-in-Residual Dense Blocks with perceptual and adversarial loss functions for high-quality upscaled images with low noise. We further fine-tune Real-ESRGAN by adapting it to the specific B/W noise and contrast characteristics. This suppresses noise artifacts without compromising detail. The comparative evaluation conducted shows that our approach achieves superior noise reduction and detail clarity compared to state-of-the-art CNN-based and ESRGAN models, apart from reducing network bandwidth requirements. These benefits are confirmed both by quantitative metrics, including Peak Signal-to-Noise Ratio and Structural Similarity Index, and by qualitative assessments, which indicate the potential of Real-ESRGAN for diagnostic-quality X-ray imaging and for efficient medical data transmission.
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