Search Results for author: Zhengyang Lu

Found 10 papers, 2 papers with code

Self-supervised Monocular Depth Estimation on Water Scenes via Specular Reflection Prior

no code implementations10 Apr 2024 Zhengyang Lu, Ying Chen

Monocular depth estimation from a single image is an ill-posed problem for computer vision due to insufficient reliable cues as the prior knowledge.

Monocular Depth Estimation SSIM

A Reinforcement Learning based Reset Policy for CDCL SAT Solvers

no code implementations4 Apr 2024 Chunxiao Li, Charlie Liu, Jonathan Chung, Zhengyang Lu, Piyush Jha, Vijay Ganesh

In most solvers, variable activities are preserved across restart boundaries, resulting in solvers continuing to search parts of the assignment tree that are not far from the one immediately prior to a restart.

reinforcement-learning Reinforcement Learning (RL) +1

Layered and Staged Monte Carlo Tree Search for SMT Strategy Synthesis

1 code implementation30 Jan 2024 Zhengyang Lu, Stefan Siemer, Piyush Jha, Joel Day, Florin Manea, Vijay Ganesh

Our method treats strategy synthesis as a sequential decision-making process, whose search tree corresponds to the strategy space, and employs MCTS to navigate this vast search space.

Decision Making Efficient Exploration +1

AlphaMapleSAT: An MCTS-based Cube-and-Conquer SAT Solver for Hard Combinatorial Problems

no code implementations24 Jan 2024 Piyush Jha, Zhengyu Li, Zhengyang Lu, Curtis Bright, Vijay Ganesh

We perform an extensive comparison of AlphaMapleSAT against the March CnC solver on challenging combinatorial problems such as the minimum Kochen-Specker and Ramsey problems.

City Scene Super-Resolution via Geometric Error Minimization

1 code implementation14 Jan 2024 Zhengyang Lu, Feng Wang

Super-resolution techniques are crucial in improving image granularity, particularly in complex urban scenes, where preserving geometric structures is vital for data-informed cultural heritage applications.

Super-Resolution

Joint Self-supervised Depth and Optical Flow Estimation towards Dynamic Objects

no code implementations7 Sep 2023 Zhengyang Lu, Ying Chen

In this work, we construct a joint inter-frame-supervised depth and optical flow estimation framework, which predicts depths in various motions by minimizing pixel wrap errors in bilateral photometric re-projections and optical vectors.

Depth Estimation Motion Segmentation +1

Pyramid Frequency Network with Spatial Attention Residual Refinement Module for Monocular Depth Estimation

no code implementations5 Apr 2022 Zhengyang Lu, Ying Chen

In this work, a Pyramid Frequency Network(PFN) with Spatial Attention Residual Refinement Module(SARRM) is proposed to deal with the weak robustness of existing deep-learning methods.

Monocular Depth Estimation

Delta family approach for the stochastic control problems of utility maximization

no code implementations25 Feb 2022 Jingtang Ma, Zhengyang Lu, Zhenyu Cui

We obtain an explicit series representation of the value function, whose coefficients are expressed through integration of the value function at a later time point against a chosen basis function.

Tensor Decomposition

Dense U-net for super-resolution with shuffle pooling layer

no code implementations11 Nov 2020 Zhengyang Lu, Ying Chen

By doing so, we effectively replace the handcrafted filter in the SISR pipeline with more lossy down-sampling filters specifically trained for each feature map, whilst also reducing the information loss of the overall SISR operation.

Image Super-Resolution SSIM

Single Image Super Resolution based on a Modified U-net with Mixed Gradient Loss

no code implementations21 Nov 2019 Zhengyang Lu, Ying Chen

To solve this problem, the mixed gradient error, which is composed by MSE and a weighted mean gradient error, is proposed in this work and applied to a modified U-net network as the loss function.

Image Super-Resolution

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