Search Results for author: Songan Zhang

Found 13 papers, 4 papers with code

CamoTeacher: Dual-Rotation Consistency Learning for Semi-Supervised Camouflaged Object Detection

no code implementations15 Aug 2024 Xunfa Lai, Zhiyu Yang, Jie Hu, Shengchuan Zhang, Liujuan Cao, Guannan Jiang, Zhiyu Wang, Songan Zhang, Rongrong Ji

Existing camouflaged object detection~(COD) methods depend heavily on large-scale pixel-level annotations. However, acquiring such annotations is laborious due to the inherent camouflage characteristics of the objects. Semi-supervised learning offers a promising solution to this challenge. Yet, its application in COD is hindered by significant pseudo-label noise, both pixel-level and instance-level. We introduce CamoTeacher, a novel semi-supervised COD framework, utilizing Dual-Rotation Consistency Learning~(DRCL) to effectively address these noise issues. Specifically, DRCL minimizes pseudo-label noise by leveraging rotation views' consistency in pixel-level and instance-level. First, it employs Pixel-wise Consistency Learning~(PCL) to deal with pixel-level noise by reweighting the different parts within the pseudo-label. Second, Instance-wise Consistency Learning~(ICL) is used to adjust weights for pseudo-labels, which handles instance-level noise. Extensive experiments on four COD benchmark datasets demonstrate that the proposed CamoTeacher not only achieves state-of-the-art compared with semi-supervised learning methods, but also rivals established fully-supervised learning methods. Our code will be available soon.

object-detection Object Detection +1

HOPE: A Reinforcement Learning-based Hybrid Policy Path Planner for Diverse Parking Scenarios

1 code implementation31 May 2024 Mingyang Jiang, Yueyuan Li, Songan Zhang, Siyuan Chen, Chunxiang Wang, Ming Yang

This novel solution integrates a reinforcement learning agent with Reeds-Shepp curves, enabling effective planning across diverse scenarios.

Autonomous Driving reinforcement-learning +1

Rethinking 3D Dense Caption and Visual Grounding in A Unified Framework through Prompt-based Localization

no code implementations17 Apr 2024 Yongdong Luo, Haojia Lin, Xiawu Zheng, Yigeng Jiang, Fei Chao, Jie Hu, Guannan Jiang, Songan Zhang, Rongrong Ji

3D Visual Grounding (3DVG) and 3D Dense Captioning (3DDC) are two crucial tasks in various 3D applications, which require both shared and complementary information in localization and visual-language relationships.

3D dense captioning 3D visual grounding +1

Tactics2D: A Highly Modular and Extensible Simulator for Driving Decision-making

2 code implementations18 Nov 2023 Yueyuan Li, Songan Zhang, Mingyang Jiang, Xingyuan Chen, Yeqiang Qian, Chunxiang Wang, Ming Yang

Simulation is a prospective method for generating diverse and realistic traffic scenarios to aid in the development of driving decision-making systems.

Autonomous Driving Decision Making +4

Dream to Adapt: Meta Reinforcement Learning by Latent Context Imagination and MDP Imagination

no code implementations11 Nov 2023 Lu Wen, Songan Zhang, H. Eric Tseng, Huei Peng

Meta reinforcement learning (Meta RL) has been amply explored to quickly learn an unseen task by transferring previously learned knowledge from similar tasks.

Meta Reinforcement Learning

A Hybrid Partitioning Strategy for Backward Reachability of Neural Feedback Loops

no code implementations14 Oct 2022 Nicholas Rober, Michael Everett, Songan Zhang, Jonathan P. How

We introduce a hybrid partitioning method that uses both target set partitioning (TSP) and backreachable set partitioning (BRSP) to overcome a lower bound on estimation error that is present when using BRSP.

Improved Robustness and Safety for Pre-Adaptation of Meta Reinforcement Learning with Prior Regularization

no code implementations19 Aug 2021 Lu Wen, Songan Zhang, H. Eric Tseng, Baljeet Singh, Dimitar Filev, Huei Peng

The performance of PEARL$^+$ is validated by solving three safety-critical problems related to robots and AVs, including two MuJoCo benchmark problems.

Autonomous Vehicles Decision Making +1

Quick Learner Automated Vehicle Adapting its Roadmanship to Varying Traffic Cultures with Meta Reinforcement Learning

1 code implementation18 Apr 2021 Songan Zhang, Lu Wen, Huei Peng, H. Eric Tseng

It is essential for an automated vehicle in the field to perform discretionary lane changes with appropriate roadmanship - driving safely and efficiently without annoying or endangering other road users - under a wide range of traffic cultures and driving conditions.

Deep Reinforcement Learning Meta Reinforcement Learning +2

Monocular 3D Vehicle Detection Using Uncalibrated Traffic Cameras through Homography

1 code implementation29 Mar 2021 Minghan Zhu, Songan Zhang, Yuanxin Zhong, Pingping Lu, Huei Peng, John Lenneman

This paper proposes a method to extract the position and pose of vehicles in the 3D world from a single traffic camera.

Driving-Policy Adaptive Safeguard for Autonomous Vehicles Using Reinforcement Learning

no code implementations2 Dec 2020 Zhong Cao, Shaobing Xu, Songan Zhang, Huei Peng, Diange Yang

This paper proposes a driving-policy adaptive safeguard (DPAS) design, including a collision avoidance strategy and an activation function.

Autonomous Vehicles Collision Avoidance +3

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