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A: MSE of determination results by the proposed method. B: Standard deviation of determination error. This experiment operates on a dataset with ground truth by manual annotation. It contains 1500 captured images with head rotations over three dimensions of pitch, yaw, and roll. The γ to minimize MSE is 3.3, while the saturation of standard deviation is reached at 2.6. This paper use the value of 3.3 as the optimal γ for following experiments.
