Paper Citation Record · LEDGER

Hydra: Marker-Free RGB-D Hand-Eye Calibration

As of 18 August 2026, this Paper Citation Record lists 29 of 29 outbound references and 1 inbound Pith citation observation for arXiv:2504.20584.

A citation records a reference. It does not transfer a finding from one paper to another.

pith.paper-citation-record.v1
2504.20584 v1

Coverage vector

measured 29 of 29 reference resolution

Typed states for the displayed outbound observations.

Source: paper_references, paper_reference_links, observed 2026-08-16T05:28:35.127934Z

measured 30 of 30 standing notices

One-hop event checks from named stored sources.

Source: scholarly_work_events, retraction_status_cache, observed 2026-08-18T06:34:40.430872+00:00

measured 1 of 1 inbound itemization

Pith citing papers itemized under the disclosed page cap.

Source: paper_references, paper_reference_links, observed 2026-05-15T15:45:39.544627Z

measured 0 of 1 external citation measurements

A source-named dated measurement, never combined with another source.

Source: arxiv_reference, observed 2026-05-15T15:46:12.169860Z

Reference resolution

29 of 29 outbound references displayed

verified exact1
verified fuzzy14
unresolved13
parse uncertain0
malformed identifier1
metadata mismatch0

External citation measurements

No source-named external measurement is stored.

Outbound references

Observation 5da9b16f-938b-4fcb-9031-19849730a0d5 · outbound

This paper cites Redundancy-Aware Action Spaces for Robot Learning,.

Hydra: Marker-Free RGB-D Hand-Eye Calibration Redundancy-Aware Action Spaces for Robot Learning,

Reference 1

Resolution: verified fuzzy; raw_fallback, observed 2026-08-16T05:28:36.207781Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 9bed0d1e-ab24-4967-87b1-56bd713cafb6 · outbound

This paper cites Universal Manipulation Interface: In-The-Wild Robot Teaching Without In-The-Wild Robots.

Hydra: Marker-Free RGB-D Hand-Eye Calibration Universal Manipulation Interface: In-The-Wild Robot Teaching Without In-The-Wild Robots

Reference 2

Resolution: unresolved; no resolver link, observed 2026-08-16T05:28:34.767307Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation e1e1e910-1236-4d2c-81f5-8db9f70f09c7 · outbound

This paper cites Camera-to-Robot Pose Estimation from a Single Image.

Hydra: Marker-Free RGB-D Hand-Eye Calibration Camera-to-Robot Pose Estimation from a Single Image

Reference 3

Resolution: unresolved; no resolver link, observed 2026-08-16T05:28:34.773440Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 309aa38e-27e5-417b-8688-ffa9f86f791d · outbound

This paper cites Markerless Camera-to-Robot Pose Estimation via Self-Supervised Sim-to-Real Transfer,.

Hydra: Marker-Free RGB-D Hand-Eye Calibration Markerless Camera-to-Robot Pose Estimation via Self-Supervised Sim-to-Real Transfer,

Reference 4

Resolution: verified fuzzy; raw_fallback, observed 2026-08-16T05:28:36.189640Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 95d91c8b-d8f3-4fde-84f5-39351d84bf00 · outbound

This paper cites CtRNet-X: Camera-to-Robot Pose Estimation in Real-world Conditions Using a Single Camera.

Hydra: Marker-Free RGB-D Hand-Eye Calibration CtRNet-X: Camera-to-Robot Pose Estimation in Real-world Conditions Using a Single Camera

Reference 5

Resolution: unresolved; no resolver link, observed 2026-08-16T05:28:34.784841Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 41767389-8d33-4fc0-b3c5-fe19b0b14992 · outbound

This paper cites Kalib: Markerless Hand-Eye Calibration with Keypoint Tracking,.

Hydra: Marker-Free RGB-D Hand-Eye Calibration Kalib: Markerless Hand-Eye Calibration with Keypoint Tracking,

Reference 6

Resolution: unresolved; no resolver link, observed 2026-08-16T05:28:34.790276Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation e3f13208-4c1b-4e33-990f-57bcde91681b · outbound

This paper cites Automatic Robot Hand- Eye Calibration Enabled by Learning-Based 3D Vision,.

Hydra: Marker-Free RGB-D Hand-Eye Calibration Automatic Robot Hand- Eye Calibration Enabled by Learning-Based 3D Vision,

Reference 7

Resolution: verified fuzzy; raw_fallback, observed 2026-08-16T05:28:36.170620Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation dd61db24-08db-40cf-a537-98dad388baa7 · outbound

This paper cites RegHEC: Hand-Eye Calibration via Simultaneous Multi-view Point Clouds Registration of Arbitrary Object.

Hydra: Marker-Free RGB-D Hand-Eye Calibration RegHEC: Hand-Eye Calibration via Simultaneous Multi-view Point Clouds Registration of Arbitrary Object

Reference 8

Resolution: unresolved; no resolver link, observed 2026-08-16T05:28:34.858742Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 05fd00bf-70ae-4eff-95c5-4860926d42d6 · outbound

This paper cites SAM 2: Segment Anything in Images and Videos.

Hydra: Marker-Free RGB-D Hand-Eye Calibration SAM 2: Segment Anything in Images and Videos

Reference 9

Resolution: unresolved; no resolver link, observed 2026-08-16T05:28:34.911060Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 14f1a2e9-ff77-4edd-9ade-447da7b7bfbf · outbound

This paper cites EasyHeC: Accurate and Automatic Hand-Eye Calibration Via Differentiable Rendering and Space Exploration,.

Hydra: Marker-Free RGB-D Hand-Eye Calibration EasyHeC: Accurate and Automatic Hand-Eye Calibration Via Differentiable Rendering and Space Exploration,

Reference 10

Resolution: verified fuzzy; raw_fallback, observed 2026-08-16T05:28:36.134981Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 7e88e69c-45f7-4d42-abfb-73fa8a662cce · outbound

This paper cites EasyHeC++: Fully Automatic Hand-Eye Calibration with Pretrained Image Models,.

Hydra: Marker-Free RGB-D Hand-Eye Calibration EasyHeC++: Fully Automatic Hand-Eye Calibration with Pretrained Image Models,

Reference 11

Resolution: verified fuzzy; raw_fallback, observed 2026-08-16T05:28:36.018044Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation a44b3876-f226-454a-b2a0-09b6e370944b · outbound

This paper cites Efficient Variants of the ICP Algo- rithm,.

Hydra: Marker-Free RGB-D Hand-Eye Calibration Efficient Variants of the ICP Algo- rithm,

Reference 12

Resolution: unresolved; no resolver link, observed 2026-08-16T05:28:34.926476Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 67ffe884-a8d5-400a-bdc1-ce0bd289cc08 · outbound

This paper cites The Geometry of the Newton Method on Non-Compact Lie Groups,.

Hydra: Marker-Free RGB-D Hand-Eye Calibration The Geometry of the Newton Method on Non-Compact Lie Groups,

Reference 13

Resolution: verified fuzzy; raw_fallback, observed 2026-08-16T05:28:35.962565Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 122a83bf-8e3b-4601-a1c0-31135dc0ec6c · outbound

This paper cites Insight into Efficient Image Registration Techniques and the Demons Algorithm,.

Hydra: Marker-Free RGB-D Hand-Eye Calibration Insight into Efficient Image Registration Techniques and the Demons Algorithm,

Reference 14

Resolution: verified fuzzy; raw_fallback, observed 2026-08-16T05:28:35.922764Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 9f5e7fa5-f017-4959-a9cd-d7d53608cf17 · outbound

This paper cites A tutorial on $\mathbf{SE}(3)$ transformation parameterizations and on-manifold optimization.

Hydra: Marker-Free RGB-D Hand-Eye Calibration A tutorial on $\mathbf{SE}(3)$ transformation parameterizations and on-manifold optimization

Reference 15

Resolution: unresolved; no resolver link, observed 2026-08-16T05:28:34.939892Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 8278aacc-bda3-405e-9be0-c48d5f370b5f · outbound

This paper cites Iteratively reweighted least squares for maximum likelihood estimation, and some robust and resistant alternatives,.

Hydra: Marker-Free RGB-D Hand-Eye Calibration Iteratively reweighted least squares for maximum likelihood estimation, and some robust and resistant alternatives,

Reference 16

Resolution: unresolved; no resolver link, observed 2026-08-16T05:28:34.953279Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 6a20181c-c515-4354-a506-3586927f6a4b · outbound

This paper cites PyTorch Kinematics,.

Hydra: Marker-Free RGB-D Hand-Eye Calibration PyTorch Kinematics,

Reference 17

Resolution: verified fuzzy; raw_fallback, observed 2026-08-16T05:28:35.881796Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 1a621a0d-b829-458e-bc8a-c415ef6de2e1 · outbound

This paper cites A Purely Algebraic Justification of the Kabsch-Umeyama Algorithm,.

Hydra: Marker-Free RGB-D Hand-Eye Calibration A Purely Algebraic Justification of the Kabsch-Umeyama Algorithm,

Reference 18

Resolution: verified fuzzy; raw_fallback, observed 2026-08-16T05:28:35.858549Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 1dd514cd-e4b4-4d9a-8c68-dec06c9776f3 · outbound

This paper cites A New Technique for Fully Autonomous and Efficient 3D Robotics Hand/Eye Calibration,.

Hydra: Marker-Free RGB-D Hand-Eye Calibration A New Technique for Fully Autonomous and Efficient 3D Robotics Hand/Eye Calibration,

Reference 19

Resolution: verified fuzzy; raw_fallback, observed 2026-08-16T05:28:35.841476Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation dcaf287e-a5ce-4d42-9c81-683eef3b87ca · outbound

This paper cites Robust Hand- Eye Calibration via Iteratively Re-weighted Rank-Constrained Semi- Definite Programming,.

Hydra: Marker-Free RGB-D Hand-Eye Calibration Robust Hand- Eye Calibration via Iteratively Re-weighted Rank-Constrained Semi- Definite Programming,

Reference 20

Resolution: verified fuzzy; raw_fallback, observed 2026-08-16T05:28:35.822270Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation ea293b0f-99d6-434e-bb61-d23249e355e6 · outbound

This paper cites Solving the Robot-World/Hand-Eye Calibration Problem Using the Kronecker Product,.

Hydra: Marker-Free RGB-D Hand-Eye Calibration Solving the Robot-World/Hand-Eye Calibration Problem Using the Kronecker Product,

Reference 21

Resolution: verified exact; doi, observed 2026-08-16T05:28:35.337875Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation dec5798d-d15d-42b6-8724-01139c0dbea4 · outbound

This paper cites Robot Operating System 2: Design, Architecture, and Uses in the Wild,.

Hydra: Marker-Free RGB-D Hand-Eye Calibration Robot Operating System 2: Design, Architecture, and Uses in the Wild,

Reference 22

Resolution: verified fuzzy; raw_fallback, observed 2026-08-16T05:28:35.802275Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation cce73afb-602f-4543-9367-84581d927711 · outbound

This paper cites AprilTag: A Robust and Flexible Visual Fiducial System,.

Hydra: Marker-Free RGB-D Hand-Eye Calibration AprilTag: A Robust and Flexible Visual Fiducial System,

Reference 23

Resolution: verified fuzzy; raw_fallback, observed 2026-08-16T05:28:35.766229Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 66497ef1-3205-47c6-9956-317e295d67b4 · outbound

This paper cites Reducing the Barrier to Entry of Complex Robotic Software: a MoveIt! Case Study.

Hydra: Marker-Free RGB-D Hand-Eye Calibration Reducing the Barrier to Entry of Complex Robotic Software: a MoveIt! Case Study

Reference 24

Resolution: unresolved; no resolver link, observed 2026-08-16T05:28:35.110441Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 2b8ae9f3-0fdd-4595-8603-c790e167d01e · outbound

This paper cites LBR-Stack: ROS 2 and Python Integration of KUKA FRI for Med and IIW A Robots,.

Hydra: Marker-Free RGB-D Hand-Eye Calibration LBR-Stack: ROS 2 and Python Integration of KUKA FRI for Med and IIW A Robots,

Reference 25

Resolution: unresolved; no resolver link, observed 2026-08-16T05:28:35.115837Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 60af9202-5650-4ec6-95e9-1f522d63392b · outbound

This paper cites OpTaS: An Optimization-based Task Spec- ification Library for Trajectory Optimization and Model Predictive Control,.

Hydra: Marker-Free RGB-D Hand-Eye Calibration OpTaS: An Optimization-based Task Spec- ification Library for Trajectory Optimization and Model Predictive Control,

Reference 26

Resolution: verified fuzzy; raw_fallback, observed 2026-08-16T05:28:35.744801Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation a85f3dc9-fe91-450b-aa31-68bfe5e54389 · outbound

This paper cites Modular Primitives for High-Performance Differentiable Rendering,.

Hydra: Marker-Free RGB-D Hand-Eye Calibration Modular Primitives for High-Performance Differentiable Rendering,

Reference 27

Resolution: unresolved; no resolver link, observed 2026-08-16T05:28:35.127934Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 3fa7e780-ef4b-4960-b685-da3c0ff8f7f8 · outbound

This paper cites Available: http://dx.doi.org/10.6028/jres.124.028.

Hydra: Marker-Free RGB-D Hand-Eye Calibration Available: http://dx.doi.org/10.6028/jres.124.028

Reference 2019

Resolution: unresolved; no resolver link, observed 2026-08-16T05:28:35.073490Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 187a736e-90a5-4a91-b3d8-8fb3fc26dea3 · outbound

This paper cites Available: https://www.science.org/doi/abs/10.1126/ scirobotics.abm6074.

Hydra: Marker-Free RGB-D Hand-Eye Calibration Available: https://www.science.org/doi/abs/10.1126/ scirobotics.abm6074

Reference 2022

Resolution: malformed identifier; no resolver link, observed 2026-08-16T05:28:35.100735Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Pith citing papers

Observation 94fa485a-2a0e-44ec-addd-7538c1be6793 · inbound

cuRoboV2: Dynamics-Aware Motion Generation with Depth-Fused Distance Fields for High-DoF Robots cites this paper.

cuRoboV2: Dynamics-Aware Motion Generation with Depth-Fused Distance Fields for High-DoF Robots Hydra: Marker-Free RGB-D Hand-Eye Calibration

Reference 25

Resolution: verified exact; arxiv_id, observed 2026-05-15T15:46:12.172789Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.