KeypointNeRF: Generalizing Image-based Volumetric Avatars using Relative Spatial Encoding of Keypoints (2205.04992v2)

Abstract: Image-based volumetric humans using pixel-aligned features promise generalization to unseen poses and identities. Prior work leverages global spatial encodings and multi-view geometric consistency to reduce spatial ambiguity. However, global encodings often suffer from overfitting to the distribution of the training data, and it is difficult to learn multi-view consistent reconstruction from sparse views. In this work, we investigate common issues with existing spatial encodings and propose a simple yet highly effective approach to modeling high-fidelity volumetric humans from sparse views. One of the key ideas is to encode relative spatial 3D information via sparse 3D keypoints. This approach is robust to the sparsity of viewpoints and cross-dataset domain gap. Our approach outperforms state-of-the-art methods for head reconstruction. On human body reconstruction for unseen subjects, we also achieve performance comparable to prior work that uses a parametric human body model and temporal feature aggregation. Our experiments show that a majority of errors in prior work stem from an inappropriate choice of spatial encoding and thus we suggest a new direction for high-fidelity image-based human modeling. https://markomih.github.io/KeypointNeRF

• The paper outlines detailed submission requirements for ECCV, specifying formatting rules, manuscript length, and a double-blind review process.
• It emphasizes strict confidentiality and ethical standards to maintain high academic integrity during the review and matching process.
• The guidelines address dual submission policies and camera-ready preparation, offering practical recommendations to avoid common submission errors.

Submission Guidelines for ECCV: A Procedural Overview

This paper articulates the submission guidelines for ECCV, targeting prospective authors aiming to contribute their research. It provides a detailed exposition of procedural requirements, formatting expectations, and ethical standards necessary for a successful submission.

Overview of Submission Requirements

The document delineates essential mandates for manuscript submissions. Papers must be in English and can extend up to 14 pages excluding references. Importantly, any deviation from the prescribed formatting or length will result in rejection. Anonymity is critical in submissions; every manuscript is subject to a double-blind review process where author identities are concealed from reviewers and vice versa.

Review and Confidentiality Protocols

Submissions undergo a rigorous review process aimed at maintaining high academic standards. The match of papers to reviewers is facilitated by the Toronto system, ensuring that each submission is assessed by domain experts. Confidentiality is underscored as a crucial aspect of the review protocol. Breaches in confidentiality are severely condemned, although responsibility does not extend beyond the ECCV organizing body should such incidents occur.

Dual and Double Submissions

The paper highlights the dual submission policy and its implications. Authors are expected to ensure that their work is novel, unpublished, and not simultaneously under consideration elsewhere. The definition of "publication" extends beyond formal proceedings to include peer-reviewed documents over four pages, thereby incentivizing genuine scholarship and preventing redundant reviewer engagement.

Camera-Ready Submission and Compliance

Upon acceptance, authors must prepare camera-ready versions adhering to precise formatting rules. These require strict compliance with Springer’s LNCS formatting styles. Additionally, author ORCID identifiers must be included to ensure proper researcher identification and contribution acknowledgment.

Recommendations and Common Issues

A checklist is provided to assist authors in avoiding common submission pitfalls. This includes ensuring the removal of unnecessary formatting commands, correctly citing references, and confirming that all documentation is complete and correctly named. Emphasis is laid on not altering font sizes or margins, as unauthorized modifications are subject to removal by editors.

Conclusion

This procedural document serves not only as a guide but also as a critical resource for prospective ECCV contributors. By adhering to these well-structured guidelines, authors can enhance the clarity, integrity, and reception of their scholarly work. The implications extend beyond compliance, fostering a robust, transparent, and equitable academic environment conducive to high-caliber scientific discourse.