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Multispectral imaging system with spatial resolution enhancement
Multispectral imaging system with spatial resolution enhancement
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机译:具有空间分辨率增强的多光谱成像系统
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摘要
A spatial resolution enhancement and dynamic range extension for a Computerized Airborne Multicamera Imaging System (CAMIS). CAMIS is a multispectral imaging system for diverse manned and unmanned aerial vehicles to fly along flexible paths and altitudes for a wide variety of applications. CAMIS comprises four spectral bands of progressive scan CCD video cameras with 782 x 576 square pixels each, giving a total of 1.82 million effective pixels. These cameras are synchronized and aligned in parallel with sub-pixel-accurate spatial offsets over a common field of view. A software procedure interpolates the original four-band 782×576 captures into 1564×1152 ones using a bi-linear algorithm, and then performs geometric correction and band-to-band pixel registration. The result is a more precisely registered, spatial resolution enhanced multispectral image, sized 1540(H) ×1140(V) ×4(Bytes). The CAMIS CCD cameras include a controllable electronic shutter, which permits the system to acquire a desirable range of signals by a computed exposure, and then bracket it with two additional up/down-stepped exposures into computer memory. The integrated data set of the multiple stepped exposures results in effectively extending the dynamic range of the measurement.
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机译:机载机载多相机成像系统(CAMIS)的空间分辨率增强和动态范围扩展。 CAMIS是一种多光谱成像系统,适用于各种载人和无人飞行器,可沿着灵活的路径和高度飞行,适用于多种应用。 CAMIS由逐行扫描CCD摄像机的四个光谱带组成,每个光谱带均为782 x 576平方像素,总共提供了182万有效像素。这些相机在公共视场上与亚像素精度的空间偏移同步并平行对齐。软件过程使用双线性算法将原始的4频段782 576内插到1564频段1152,然后执行几何校正和带间像素配准。结果是尺寸更精确的,空间分辨率增强的多光谱图像,大小为1540(H)×1140(V)×4(字节)。 CAMIS CCD相机包括一个可控制的电子快门,该快门允许系统通过计算的曝光量获取所需范围的信号,然后将其与两个附加的上/下步进曝光一起放入计算机内存。多个阶梯式曝光的集成数据集可有效扩展测量的动态范围。
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