2,594 research outputs found
Application of numerical simulation on eliminating shrinkage defect of automobile wheel hub
Shrinkage defect is a serious problem encountered during the development of automobile wheel hub made from ductile cast iron. In order to find out the reason for shrinkage formation and eliminate it in time, numerical simulation technology was performed to analyze the casting solidification process, and two modified casting projects were brought forward. Based on the simulation result, the solidification characteristics of the original project were compared with two modified projects and accordingly the optimized casting project with chill and rider feeding was selected for application during the development of the wheel hub. The result shows that casting shrinkage defect has been effectively controlled and the trial production cycle of the wheel hub was significantly shortened
3D Interacting Hand Pose Estimation by Hand De-occlusion and Removal
Estimating 3D interacting hand pose from a single RGB image is essential for
understanding human actions. Unlike most previous works that directly predict
the 3D poses of two interacting hands simultaneously, we propose to decompose
the challenging interacting hand pose estimation task and estimate the pose of
each hand separately. In this way, it is straightforward to take advantage of
the latest research progress on the single-hand pose estimation system.
However, hand pose estimation in interacting scenarios is very challenging, due
to (1) severe hand-hand occlusion and (2) ambiguity caused by the homogeneous
appearance of hands. To tackle these two challenges, we propose a novel Hand
De-occlusion and Removal (HDR) framework to perform hand de-occlusion and
distractor removal. We also propose the first large-scale synthetic amodal hand
dataset, termed Amodal InterHand Dataset (AIH), to facilitate model training
and promote the development of the related research. Experiments show that the
proposed method significantly outperforms previous state-of-the-art interacting
hand pose estimation approaches. Codes and data are available at
https://github.com/MengHao666/HDR.Comment: ECCV202
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