On-Board, Real-Time Preprocessing System for Optical Remote-Sensing Imagery.
On-Board, Real-Time Preprocessing System for Optical Remote-Sensing Imagery.
复制标题
光学遥感图像机载实时预处理系统
DOI：
10.3390/s18051328
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发表时间：
2018-04-25
期刊：
影响因子：
--
通讯作者：
Chen L
中科院分区：
文献类型：
--
作者：
Qi B;Shi H;Zhuang Y;Chen H;Chen L
随着遥感技术的发展，光学遥感图像处理在地质勘探、自然灾害防治等多个应用领域发挥了重要作用。然而，相对辐射校正和几何校正是图像预处理的关键步骤，因为未经预处理的原始图像数据在应用过程中会导致性能不佳。传统上，遥感数据下行到地面站，进行预处理，然后分发给用户。这一过程会产生很长的延迟，这是遥感数据实时应用的主要瓶颈。因此，对车载实时图像进行预处理是非常必要的。提出了一种用于星载图像预处理的实时处理体系结构。首先，提出了一种层次化的优化映射方法，在硬件结构上实现了该算法，有效地降低了车载处理的计算负担。其次，设计了一种基于优化的现场可编程门阵列(现场可编程门阵列)和数字信号处理器(DSP；统称为FPGA-DSP)的协同处理系统，以实现实时预处理。实验结果表明，该系统在资源和功耗有限的星载处理器中具有潜在的应用前景。
With the development of remote-sensing technology, optical remote-sensing imagery processing has played an important role in many application fields, such as geological exploration and natural disaster prevention. However, relative radiation correction and geometric correction are key steps in preprocessing because raw image data without preprocessing will cause poor performance during application. Traditionally, remote-sensing data are downlinked to the ground station, preprocessed, and distributed to users. This process generates long delays, which is a major bottleneck in real-time applications for remote-sensing data. Therefore, on-board, real-time image preprocessing is greatly desired. In this paper, a real-time processing architecture for on-board imagery preprocessing is proposed. First, a hierarchical optimization and mapping method is proposed to realize the preprocessing algorithm in a hardware structure, which can effectively reduce the computation burden of on-board processing. Second, a co-processing system using a field-programmable gate array (FPGA) and a digital signal processor (DSP; altogether, FPGA-DSP) based on optimization is designed to realize real-time preprocessing. The experimental results demonstrate the potential application of our system to an on-board processor, for which resources and power consumption are limited.
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影响因子：
8
作者：
Du, Q;Nekovei, R
通讯作者：
Nekovei, R
DOI：
10.1016/j.isprsjprs.2005.02.002
发表时间：
2005-06-01
影响因子：
12.7
作者：
Tralli, DM;Blom, RG;Evans, DL
通讯作者：
Evans, DL
影响因子：
5.8
作者：
Goddijn-Murphy, Lonneke;Peters, Steef;Gibb, Stuart
通讯作者：
Gibb, Stuart
影响因子：
3
作者：
Du, Qian;Nekovei, Reza
通讯作者：
Nekovei, Reza
影响因子：
3
作者：
El-Araby, Esam;El-Ghazawi, Tarek;Irish, Richard
通讯作者：
Irish, Richard