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Liangchen Song

14 accepted papers

2026

Pico-Banana-400K: A Large-Scale Dataset for Text-Guided Image Editing

CVPR 2026

Recent advances in multimodal models have demonstrated remarkable text-guided image editing capabilities, with systems like GPT-4o and Nano-Banana setting new benchmarks. However, the research community's progress remains constrained by the absence of large-scale, high-quality, and openly accessible

Cited by 0SourcecodeScholar
2026

iGRPO: Fast Online RL for Flow Matching Model with Dense Reward

ICML 2026poster

Conventional practice assumes that online reinforcement learning for flow-matching models requires sampling full denoising trajectories to compute rewards. This assumption underlies methods such as Group Relative Policy Optimization (GRPO), where the policy must traverse the entire reverse process b…

Cited by 0SourceScholar
2025

CAR-Flow: Condition-Aware Reparameterization Aligns Source and Target for Better Flow Matching

NeurIPS 2025spotlight

Conditional generative modeling aims to learn a conditional data distribution from samples containing data-condition pairs. For this, diffusion and flow-based methods have attained compelling results. These methods use a learned (flow) model to transport an initial standard Gaussian noise that ignor…

Cited by 0SourceScholar
2025

Cavia: Camera-controllable Multi-view Video Diffusion with View-Integrated Attention

ICML 2025poster

In recent years there have been remarkable breakthroughs in image-to-video generation. However, the 3D consistency and camera controllability of generated frames have remained unsolved. Recent studies have attempted to incorporate camera control into the generation process, but their results are oft…

Cited by 8SourcePDFScholar
2025

STIV: Scalable Text and Image Conditioned Video Generation

ICCV 2025poster

We present a simple and scalable text and image conditioned video generation method. Our approach, named STIV, integrates a variable number of image conditions into a Diffusion Transformer (DiT) through frame replacement. This design enables STIV to perform both text-to-video (T2V) and text-image-to…

2024

Efficient-3Dim: Learning a Generalizable Single-image Novel-view Synthesizer in One Day

ICLR 2024poster

The task of novel view synthesis aims to generate unseen perspectives of an object or scene from a limited set of input images. Nevertheless, synthesizing novel views from a single image remains a significant challenge. Previous approaches tackle this problem by adopting mesh prediction, multi-plane…

Cited by 0SourcePDFScholar
2023

NeuRBF: A Neural Fields Representation with Adaptive Radial Basis Functions

ICCV 2023oral

We present a novel type of neural fields that uses general radial bases for signal representation. State-of-the-art neural fields typically rely on grid-based representations for storing local neural features and N-dimensional linear kernels for interpolating features at continuous query points. The…

Cited by 82PDFcodeScholar
2023

Progressive Multi-View Human Mesh Recovery with Self-Supervision

AAAI 2023technical

To date, little attention has been given to multi-view 3D human mesh estimation, despite real-life applicability (e.g., motion capture, sport analysis) and robustness to single-view ambiguities. Existing solutions typically suffer from poor generalization performance to new settings, largely due to…

Cited by 16SourcePDFScholar
2022

PREF: Predictability Regularized Neural Motion Fields

ECCV 2022poster

"Knowing the 3D motions in a dynamic scene is essential to many vision applications. Recent progress is mainly focused on estimating the activity of some specific elements like humans. In this paper, we leverage a neural motion field for estimating the motion of all points in a multiview setting. Mo…

Cited by 39SourcePDFScholar
2021

Rethinking Soft Labels for Knowledge Distillation: A Bias–Variance Tradeoff Perspective

ICLR 2021poster

Knowledge distillation is an effective approach to leverage a well-trained network or an ensemble of them, named as the teacher, to guide the training of a student network. The outputs from the teacher network are used as soft labels for supervising the training of a new network. Recent studies (M…

2021

Robust Knowledge Transfer via Hybrid Forward on the Teacher-Student Model

AAAI 2021technical

When adopting deep neural networks for a new vision task, a common practice is to start with fine-tuning some off-the-shelf well-trained network models from the community. Since a new task may require training a different network architecture with new domain data, taking advantage of off-the-shelf m…

Cited by 13SourcePDFScholar
2021

Stacked Homography Transformations for Multi-View Pedestrian Detection

ICCV 2021poster

Multi-view pedestrian detection aims to predict a bird's eye view (BEV) occupancy map from multiple camera views. This task is confronted with two challenges: how to establish the 3D correspondences from views to the BEV map and how to assemble occupancy information across views. In this paper, we p…

Cited by 56PDFScholar
2021

Track To Detect and Segment: An Online Multi-Object Tracker

CVPR 2021poster

Most online multi-object trackers perform object detection stand-alone in a neural net without any input from tracking. In this paper, we present a new online joint detection and tracking model, TraDeS (TRAck to DEtect and Segment), exploiting tracking clues to assist detection end-to-end. TraDeS in…

Cited by 452PDFcodeScholar