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Airborne camera and spectrometer experiments and data evaluation

机译:机载相机和光谱仪的实验和数据评估

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New stereo push broom camera systems have been developed at German Aerospace Centre (DLR). The new small multispectral systems (Multi Functional Camerahead - MFC, Advanced Multispectral Scanner - AMS) are light weight, compact and display three or five RGB stereo lines of 8000, 10 000 or 14 000 pixels, which are used for stereo processing and the generation of Digital Surface Models (DSM) and near True Orthoimage Mosaics (TOM). Simultaneous acquisition of different types of MFC-cameras for infrared and RGB data has been successfully tested. All spectral channels record the image data in full resolution, pan-sharpening is not necessary. Analogue to the line scanner data an automatic processing chain for UltraCamD and UltraCamX exists. The different systems have been flown for different types of applications; main fields of interest among others are environmental applications (flooding simulations, monitoring tasks, classification) and 3D-modelling (e.g. city mapping). From the DSM and TOM data Digital Terrain Models (DTM) and 3D city models are derived. Textures for the facades are taken from oblique orthoimages, which are created from the same input data as the TOM and the DOM. The resulting models are characterised by high geometric accuracy and the perfect fit of image data and DSM. The DLR is permanently developing and testing a wide range of sensor types and imaging platforms for terrestrial and space applications. The MFC-sensors have been flown in combination with laser systems and imaging spectrometers and special data fusion products have been developed. These products include hyperspectral orthoimages and 3D hyperspectral data.
机译:德国航空航天中心(DLR)已开发出新的立体推扫帚相机系统。新的小型多光谱系统(多功能摄像头-MFC,高级多光谱扫描仪-AMS)重量轻,结构紧凑,可显示三,五条8000、10000或14000像素的RGB立体线,用于立体处理和生成表面模型(DSM)和真实正射影像马赛克(TOM)附近。已成功测试了用于红外和RGB数据的不同类型MFC相机的同时采集。所有光谱通道均以全分辨率记录图像数据,因此无需进行全景锐化。与线扫描仪数据类似,存在用于UltraCamD和UltraCamX的自动处理链。针对不同类型的应用程序已经使用了不同的系统。主要关注领域包括环境应用(洪水模拟,监视任务,分类)和3D建模(例如城市地图)。从DSM和TOM数据得出数字地形模型(DTM)和3D城市模型。外墙的纹理来自倾斜的正射影像,这些影像是根据与TOM和DOM相同的输入数据创建的。生成的模型的特点是几何精度高,并且图像数据和DSM完美匹配。 DLR正在为地面和太空应用永久开发和测试各种传感器类型和成像平台。 MFC传感器已经与激光系统和成像光谱仪结合使用,并且已经开发出特殊的数据融合产品。这些产品包括高光谱正射影像和3D高光谱数据。

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