一种安全的多帧遥感图像的外包融合去噪方案

发布时间：2018-01-17 21:35

本文关键词：一种安全的多帧遥感图像的外包融合去噪方案　出处：《计算机研究与发展》2017年10期 　论文类型：期刊论文

【摘要】：遥感图像去噪是图像处理领域的热门研究课题.伴随着采集设备改进和技术提升,同一场景下的多帧图像的融合去噪已经成为可能.然而海量遥感图像去噪在单机上暴露出处理速度慢、并发性差等问题,利用云计算平台进行海量数据的存储和处理是大势所趋.为保护外包计算的遥感图像的安全性,提出了一种针对多帧遥感图像的安全外包融合去噪方案.方案利用Paillier加密算法的密文加法同态性和Johnson-Lindenstrauss转换近似保留欧氏距离的特性,对平均图像进行基于动态滤波参数的融合去噪.选用从多幅Landsat 8遥感图像中截取多个512×512像素的图像作为实验对象,搭建了Spark单机环境来模拟云环境.实验数据表明:提出的外包方案可以有效地保证遥感图像的安全性;同时,融合去噪方案的效果明显优于已有的密文去噪方案和单帧密文去噪方案,且对不同图像、不同大小的噪声均有很好的去噪效果.
[Abstract]:Remote sensing image denoising is a hot research topic in the field of image processing. With the acquisition of equipment improvement and upgrade technology, denoising has become possible in the same scene of multi frame image fusion. However, the massive remote sensing image denoising on the single exposed slow processing speed, concurrency problems such as the use of cloud computing platform massive data storage and processing is to represent the general trend. Safety of the remote sensing image is calculated for the protection of outsourcing, put forward a kind of security outsourcing for multi frame of remote sensing image fusion denoising scheme. A scheme of using Paillier encryption algorithm and Johnson-Lindenstrauss converting ciphertext additive homomorphic approximate retention characteristics of Euclidean distance, the average image denoising fusion dynamic filtering based on the parameters of the selected images from the Landsat 8 remote sensing image interception of a plurality of 512 x 512 pixels as the experiment object, build a single Spark ring Exit to simulate cloud environments. The experimental data show that outsourcing scheme proposed can effectively ensure the safety of the remote sensing image fusion; at the same time, denoising scheme is better than the existing ciphertext denoising scheme and single frame ciphertext denoising algorithm, and the different images of different sizes, noise has a good de-noising effect.

【作者单位】：上海海洋大学信息学院;国家海洋局东海分局;
【基金】：国家自然科学基金项目(61402282,61672339,41671431) 上海市青年科技英才扬帆计划项目(14YF1410400) 上海市科委地方高校能力建设项目(15590501900)~~
【分类号】：TP751
【正文快照】： This work was supported by the National Natural Science Foundation of China(61402282,61672339,41671431),the ShanghaiYang-Fan Plan(14YF1410400),and the Local University Capacity Enhancement Project of Science and Technology Commission ofShanghai Municipal

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