We present a novel method to fuse the power of deep networks with the
computational efficiency of geometric and probabilistic localization
algorithms. In contrast to other methods that completely replace a classical
visual estimator with a deep network, we propose an approach that uses a
convolutional neural network to learn difficult-to-model corrections to the
estimator from ground-truth training data. To this end, we derive a novel loss
function for learning SE(3) corrections based on a matrix Lie groups approach,
with a natural formulation for balancing translation and rotation errors. We
use this loss to train a Deep Pose Correction network (DPC-Net) that predicts
corrections for a particular estimator, sensor and environment. Using the KITTI
odometry dataset, we demonstrate significant improvements to the accuracy of a
computationally-efficient sparse stereo visual odometry pipeline, that render
it as accurate as a modern computationally-intensive dense estimator. Further,
we show how DPC-Net can be used to mitigate the effect of poorly calibrated
lens distortion parameters.

该论文介绍了一种新方法，它将深度网络的能力与几何和概率定位算法的计算效率相结合，通过矩阵李群方法导出了一个新的损失函数用于学习 SE (3) 修正，用 DPC-Net 预测从地面实况训练数据中学习得到的模型纠正特定的估计器、传感器和环境误差，并展示了如何减轻镜头失真参数不良校准的影响。