Wide field-of-view all-reflective objectives designed for multispectral image acquisition in photogrammetric applications
Wide field-of-view all-reflective objectives designed for multispectral image acquisition in photogrammetric applications
复制标题
宽视场全反射物镜，专为摄影测量应用中的多光谱图像采集而设计
DOI：
10.1117/12.896754
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Knobbe
中科院分区：
文献类型：
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作者：
Richter;Knobbe
在许多航空和近景摄影测量应用中，除了可见光（维斯）光谱范围之外，还需要近红外（NIR）光谱范围。目前，许多特别是航空摄影测量系统针对每个光谱带使用特别优化的相机系统。使用单独的相机或镜头可能会在所获取的图像之间引入延迟和时间延迟，从而使数据融合过程复杂化。此外，它增加了整个系统的额外重量。通过单个目标的图像采集，可以显著降低数据融合的复杂度和权重。然而，为了能够针对不同的光谱带仅使用一个物镜，光学系统必须没有色差。对于摄影测量应用，宽视场和高分辨率是常见的附加要求。因此，我们将提出一个设计和适应摄影测量校准方法的全反射无遮挡光学系统优化全画幅成像传感器。全反射无遮挡光学系统与无人驾驶飞行器（UAV）结合也可以是非常有效的成像工具。由于有效载荷能力有限，许多目前可用的无人机只能同时与一个光谱受限的相机系统一起使用。利用小型化的全反射相机系统，可以同时在可见光和例如NIR光谱范围内获取图像数据。
In many aerial and close-range photogrammetry applications, the near infrared (NIR) spectral range is required in addition to the visible (VIS) spectral range. Currently, many especially aerial photogrammetric systems use particularly optimized camera systems for each spectral band. Using separate cameras or lenses can introduce parallaxes and timedelays between the acquired images, and thus complicate the data fusion process. Furthermore, it adds additional weight to the entire system. With an image acquisition through a single objective, the complexity of the data fusion and the weight can be significantly reduced. However, to be able to only use one objective for different spectral bands, the optical system has to be free of chromatic aberrations. For photogrammetric applications, a wide field-of-view and a high resolution are frequent additional requirements. Therefore, we will present a design and an adapted photogrammetric calibration method of an all-reflective unobscured optical system optimized for full-frame imaging sensors. All-reflective unobscured optical systems may also be a very efficient imaging tool in combination with unmanned aerial vehicles (UAVs). Due to the limited payload capacity, many currently available UAVs can only be used with one spectrally limited camera system at the same time. With miniaturized all-reflective camera systems, the image data could be acquired in the visible and e.g. the NIR spectral range simultaneously.
DOI：
--
发表时间：
1976
期刊：
影响因子：
--
作者：
H. Ebner
通讯作者：
H. Ebner