...Least-squares model fitting, model-based vision, 3-D reconstruction, camera calibration, projective invaria[gap=238]关键词：最小二乘模型拟合，模型为基础的视觉，三维重建，摄像机标定，投影不变量。
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通过分析MOS管在饱和区失配因素，优化MOS管失配模型，提出用最小二乘曲线拟合法进行相关模型参数提取。
The factors of MOS transistor in the saturation region are analyzed, the mismatch models are optimized, and the model parameter extraction is done by least squares curve fitting method.
提出了辐射光谱、测量区域内大气透过率谱的算法模型，以及应用非线性最小二乘拟合算法实现气体浓度反演的方法。
The algorithm of radiance spectra and transmittance spectra in measured region was proposed, and the method of retrieving gas concentrations with NLLS fitting algorithm was also proposed.
用参数可分离非线性最小二乘拟合方法，根据少量测量数据较准确地求得了太阳电池双指数数学模型。
Solar cell both exponent mathematical model can be obtained exactly using a few measurement data by the least squares fitting method that parameter can be separated.
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