arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1901.10074cs.CR
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CaRENets:一种紧凑且资源高效的医学图像同态推理CNN

CaRENets: Compact and Resource-Efficient CNN for Homomorphic Inference on Encrypted Medical Images

Jin Chao, Ahmad Al Badawi, Balagopal Unnikrishnan, Jie Lin, Chan Fook Mun, James M. Brown, J. Peter Campbell, Michael Chiang, Jayashree Kalpathy-Cramer, Vijay R… 展开作者

Jin Chao, Ahmad Al Badawi, Balagopal Unnikrishnan, Jie Lin, Chan Fook Mun, James M. Brown, J. Peter Campbell, Michael Chiang, Jayashree Kalpathy-Cramer, Vijay Ramaseshan Chandrasekhar, Pavitra Krishnaswamy, Khin Mi Mi Aung

摘要:

卷积神经网络(CNN)在医学图像分类任务中实现了显著的性能飞跃。然而,由于数据隐私问题,将神经网络模型转换为临床应用仍然具有挑战性。全同态加密(FHE)有可能解决这一挑战,因为它可以在加密图像上使用CNN。然而,当前的HE技术造成巨大的计算和存储器开销,特别是对于高分辨率图像,例如在临床背景下看到的那些。我们提供CareNet:紧凑且资源高效的CNN,用于在实际应用中对高分辨率加密图像进行高性能和资源高效的推理。在核心,CareNet包括一个新的FHE紧凑包装方案,与CNN功能紧密集成。与标准交错打包方案相比,CaRENets提供了内存效率(由于图像和CNN激活的紧凑打包)和推理速度(由于创建的密文数量和相关数学运算的减少)的双重优势。我们应用CaRENets在两种临床条件下执行具有80位安全级别的同态异常检测-早产儿视网膜病变(ROP)和糖尿病视网膜病变(DR)。ROP数据集包括96 x 96灰度图像,而DR数据集包括256 x 256 RGB图像。我们展示了超过4-5倍的内存效率和4 - 5倍的推理加速比交错包装方案的改善。由于我们的方法能够实现存储器高效的低延迟HE推断而不施加额外的通信负担,因此它对临床成像中的实用和安全的深度学习推断具有影响。

英文摘要:

Convolutional neural networks (CNNs) have enabled significant performance leaps in medical image classification tasks. However, translating neural network models for clinical applications remains challenging due to data privacy issues. Fully Homomorphic Encryption (FHE) has the potential to address this challenge as it enables the use of CNNs on encrypted images. However, current HE technology poses immense computational and memory overheads, particularly for high-resolution images such as those seen in the clinical context. We present CaRENets: Compact and Resource-Efficient CNNs for high performance and resource-efficient inference on high-resolution encrypted images in practical applications. At the core, CaRENets comprises a new FHE compact packing scheme that is tightly integrated with CNN functions. CaRENets offers dual advantages of memory efficiency (due to compact packing of images and CNN activations) and inference speed (due to the reduction in the number of ciphertexts created and the associated mathematical operations) over standard interleaved packing schemes. We apply CaRENets to perform homomorphic abnormality detection with 80-bit security level in two clinical conditions - Retinopathy of Prematurity (ROP) and Diabetic Retinopathy (DR). The ROP dataset comprises 96 x 96 grayscale images, while the DR dataset comprises 256 x 256 RGB images. We demonstrate over 45x improvement in memory efficiency and 4-5x speedup in inference over the interleaved packing schemes. As our approach enables memory-efficient low-latency HE inference without imposing additional communication burden, it has implications for practical and secure deep learning inference in clinical imaging.

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