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首页> 外文期刊>Geoscience and Remote Sensing Letters, IEEE >A Single-Pixel Imaging System for Remote Sensing by Two-Step Iterative Curvelet Thresholding
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A Single-Pixel Imaging System for Remote Sensing by Two-Step Iterative Curvelet Thresholding

机译：两步迭代曲线小波阈值遥感的单像素成像系统。

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摘要

Recently, a new framework named compressed sensing (CS) for the simultaneous sampling and compression of signals has been applied for panoramic-view imaging in aerospace remote sensing. By CS, it is possible for us to take superresolution photographs using only one or a few pixels rather than a million pixels by conventional digital cameras. However, the most popular approach of satellite/airborne remote sensing is line-scan imaging instead of panoramic-view imaging. In this letter, we propose a single-pixel imaging system for line-scan onboard cameras by applying compressive-scanning matrices in a sensing step and a two-step iterative curvelet thresholding method in an offline decoding step, which converges faster than previous single-step iterative thresholding methods. Numerical experiments show good performance of the proposed method for remote sensing. Results indicate the need to design practical single-pixel remote sensing instruments involving less storage space, less power consumption, and smaller size than the currently used charged-coupled-device cameras.
机译：最近，用于信号的同时采样和压缩的名为压缩感测（CS）的新框架已应用于航空遥感中的全景成像。通过CS，我们有可能仅使用一个或几个像素而不是传统数码相机的一百万像素来拍摄超分辨率照片。但是，卫星/机载遥感最流行的方法是线扫描成像而不是全景成像。在这封信中，我们通过在感测步骤中应用压缩扫描矩阵和离线解码步骤中的两步迭代Curvelet阈值化方法，提出了一种用于行扫描机载相机的单像素成像系统，其收敛速度比以前的单步成像快。分步迭代阈值方法。数值实验表明，该方法具有良好的遥感效果。结果表明，需要设计实用的单像素遥感仪器，与目前使用的电荷耦合设备相机相比，该仪器具有较小的存储空间，较小的功耗和较小的尺寸。

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