The TM data was processed as follows: radiometric calibration ,geometric calibration and finally maximum-likelihood classification in order to get the cultivated land validation data.
对TM数据进行辐射定标、几何校正并执行最大似然法分类以获得耕地区的验证数据。
参考来源 - 基于MODIS NDVI时间序列数据的耕地信息提取研究For geometric calibration, we propose a unified coordinate image transformation algorithm, and deal with two types of geometric distortion in one process.
几何校准方面,采用统一坐标系的图像变换算法,将几何失真的两类形式置于一个算法流程中解决。
参考来源 - 多投影增强现实系统的研究Progressed geometric calibration for the four-band single-CCD imager consulting cameras or vidicons' calibration methods in photogrammetry industry.
参照摄影测量行业对相机或摄像机的标定方法,对单CCD四波段光谱成像仪进行了几何定标。
参考来源 - 单CCD四波段光谱成像仪的定标与图像校正As for images after radiometric calibration, 3-dimention noise analyzing method is introduced. For image after geometric calibration, three performance parameter are used to evaluate the images, and algorithm of the paper is validated.
给出了常用的辐射质量评估方法；对辐射校］t后的图像，引进了三维噪声分析方法，起到了对图像辐射质量和辐射校计方法的评估作用；对几何校正后的图像，采用并计算了三个性能参数，验证了论文采用的校正算法的有效性。
参考来源 - Landsat7 ETM+数据处理技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
According to the Range Doppler equations, the geometric calibration of SAR image can be realized using SAR imaging parameters.
依据合成孔径雷达(SAR)距离方程和多普勒方程，用SAR成像参数可实现SAR图像的几何校正。
Parameters of geometric calibration algorithm are optimized by the feature of orthodox matrix. Time and memory accord with real time system.
根据正交矩阵特点简化参数求解，使运算满足了实时系统的要求。
The image should be corrected by geometric calibration and edge-blending before projection in order to display image on the curved plane screen correctly.
为了在曲面屏幕上正确的显示图像，需要在投影前实时地对图像进行几何校正和边缘融合。
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