中文说明：表示出两帧图像间各个像素点的相对情况，该函数用来计算任意函数的一阶偏导数(数值方法),添加噪声处理，包含飞行器飞行中的姿态控制，如侧滑角，倾斜角，滚转角，俯仰角，算法优化非常好，几乎没有循环，有借鉴意义哦。
English Description：
Show two frames relative to each pixel, this function is used to calculate the first order partial derivatives of a function (method), add noise, contained attitude control of aircraft in flight, such as sideslip angle, angle of roll angle, pitch angle, algorithm very well, almost no circulation, reference, Oh.