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Zili Liu

3 accepted papers

2025

Satellite Observations Guided Diffusion Model for Accurate Meteorological States at Arbitrary Resolution

CVPR 2025highlight

Accurate acquisition of surface meteorological conditions at arbitrary locations holds significant importance for weather forecasting and climate simulation. Meteorological states derived from satellite observations are often provided in the form of low-resolution grid fields. If spatial interpolati…

2022

Graph R-CNN: Towards Accurate 3D Object Detection with Semantic-Decorated Local Graph

ECCV 2022poster

"Two-stage detectors have gained much popularity in 3D object detection. Most two-stage 3D detectors utilize grid points, voxel grids, or sampled keypoints for RoI feature extraction in the second stage. Such methods, however, are inefficient in handling unevenly distributed and sparse outdoor point…

2022

SCALoss: Side and Corner Aligned Loss for Bounding Box Regression

AAAI 2022technical

Bounding box regression is an important component in object detection. Recent work achieves promising performance by optimizing the Intersection over Union (IoU). However, IoU-based loss has the gradient vanish problem in the case of low overlapping bounding boxes, and the model could easily ignore…