LogPolar

代码说明：

  Log-Polar变换, 能把笛卡尔坐标系里面的旋转和尺度变换变为Log-Polar坐标系中的角度方向和log-r方向的平移(The Log-Polar transform can transform the rotation and scale transform in the Descartes coordinate system into the angular direction and the log-r direction translation in the Log-Polar coordinate system)