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Jayjun Lee

8 accepted papers

2026

HydroShear: Hydroelastic Shear Simulation for Tactile Sim-to-Real Reinforcement Learning

RSS 2026poster

In this paper, we address the problem of tactile sim-to-real policy transfer for contact-rich tasks. Existing methods primarily focus on vision-based sensors and emphasize image rendering quality while providing overly simplistic models of force and shear. Consequently, these models exhibit a large …

Cited by 0SourceScholar
2026

RoboMME: Benchmarking and Understanding Memory for Robotic Generalist Policies

ICML 2026oral

Memory is critical for long-horizon and history-dependent robotic manipulation. Such tasks often involve counting repeated actions or manipulating objects that become temporarily occluded. Recent vision-language-action (VLA) models have begun to incorporate memory mechanisms; however, their evaluati…

Cited by 0SourcecodeScholar
2025

AimBot: A Simple Auxiliary Visual Cue to Enhance Spatial Awareness of Visuomotor Policies

CoRL 2025poster

In this paper, we propose AimBot, a lightweight visual augmentation technique that provides explicit spatial cues to improve visuomotor policy learning in robotic manipulation. AimBot overlays shooting lines and scope reticles onto multi-view RGB images, offering auxiliary visual guidance that encod…

Cited by 0SourcecodeScholar
2025

Do Vision-Language Models Represent Space and How? Evaluating Spatial Frame of Reference under Ambiguities

ICLR 2025oral

Spatial expressions in situated communication can be ambiguous, as their meanings vary depending on the frames of reference (FoR) adopted by speakers and listeners. While spatial language understanding and reasoning by vision-language models (VLMs) have gained increasing attention, potential ambigui…

2025

RACER: Rich Language-Guided Failure Recovery Policies for Imitation Learning

ICRA 2025

Developing robust and correctable visuomotor policies for robotic manipulation is challenging due to the lack of self-recovery mechanisms from failures and the limitations of simple language instructions in guiding robot actions. To address these issues, we propose a scalable data generation pipelin

Cited by 39SourcecodeScholar
2025

ViTaSCOPE: Visuo-tactile Implicit Representation for In-hand Pose and Extrinsic Contact Estimation

RSS 2025poster

Mastering dexterous, contact-rich object manipulation demands precise estimation of both in-hand object poses and external contact locations—tasks particularly challenging due to partial and noisy observations. We present ViTaSCOPE: Visuo-Tactile Simultaneous Contact and Object Pose Estimation, a ne…

Cited by 0PDFScholar