NVlabs / latentfusion

LatentFusion: End-to-End Differentiable Reconstruction and Rendering for Unseen Object Pose Estimation
https://arxiv.org/pdf/1912.00416.pdf
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The problem of gradient vanishing #15

Open vtasStu opened 3 years ago

vtasStu commented 3 years ago

When I used the Fine Pose Estimation of your code, I found that when the initial value of log_quaternion was set to [0., 0., 0.], the gradient value of log_quaternion would always be 0. In turn, the rotation parameters cannot be optimized. This may be caused by a change in the rotation parameters in Camera.