GeoReF: Geometric Alignment Across Shape Variation for Category-level Object Pose Refinement
Authors: Linfang Zheng, Tze Ho Elden Tse, Chen Wang, Yinghan Sun, Hua Chen, Ales Leonardis, Wei Zhang, Hyung Jin Chang

Object pose refinement is essential for robust object pose estimation. Previous work has made significant progress towards instance-level object pose refinement. Yet category-level pose refinement is a more challenging problem due to large shape variations within a category and the discrepancies between the target object and the shape prior. To address these challenges we introduce a novel architecture for category-level object pose refinement. Our approach integrates an HS-layer and learnable affine transformations which aims to enhance the extraction and alignment of geometric information. Additionally we introduce a cross-cloud transformation mechanism that efficiently merges diverse data sources. Finally we push the limits of our model by incorporating the shape prior information for translation and size error prediction. We conducted extensive experiments to demonstrate the effectiveness of the proposed framework. Through extensive quantitative experiments we demonstrate significant improvement over the baseline method by a large margin across all metrics.