Deformable 3D Gaussians for High-Fidelity Monocular Dynamic Scene Reconstruction (2309.13101v2)

Abstract: Implicit neural representation has paved the way for new approaches to dynamic scene reconstruction and rendering. Nonetheless, cutting-edge dynamic neural rendering methods rely heavily on these implicit representations, which frequently struggle to capture the intricate details of objects in the scene. Furthermore, implicit methods have difficulty achieving real-time rendering in general dynamic scenes, limiting their use in a variety of tasks. To address the issues, we propose a deformable 3D Gaussians Splatting method that reconstructs scenes using 3D Gaussians and learns them in canonical space with a deformation field to model monocular dynamic scenes. We also introduce an annealing smoothing training mechanism with no extra overhead, which can mitigate the impact of inaccurate poses on the smoothness of time interpolation tasks in real-world datasets. Through a differential Gaussian rasterizer, the deformable 3D Gaussians not only achieve higher rendering quality but also real-time rendering speed. Experiments show that our method outperforms existing methods significantly in terms of both rendering quality and speed, making it well-suited for tasks such as novel-view synthesis, time interpolation, and real-time rendering.

• The paper introduces a novel deformable 3D Gaussian representation for accurately reconstructing dynamic scenes from monocular input.
• It details an adaptive methodology that optimizes Gaussian parameters in real time to balance geometric precision with computational efficiency.
• Experimental results validate the approach, demonstrating its capability to capture fine scene details and perform robustly across diverse scenarios.

The document provides a detailed LaTeX template intended to standardize the formatting of anonymized author responses (rebuttals) following the review process. The template addresses several critical aspects to ensure that rebuttals maintain consistency with the conference’s submission format and uphold the principles of double-blind review. The following points capture the technical details and requirements specified in the document:

Purpose and Scope

The template is designed to assist authors in crafting a rebuttal that:

• Addresses factual errors or clarifies reviewer queries without introducing new contributions such as additional theorems, algorithms, or experiments.
• Maintains anonymity by disallowing external links or any formatting that could reveal author identity.
• Adheres to a strict one-page limit that includes all figures, references, and supplementary content.

Layout and Formatting Specifications

The template enforces rigorous page layout constraints to guarantee uniformity:

• Text Area Dimensions: The total allowable text area is set to $6\frac{7}{8}$ inches (17.46 cm) in width and $8\frac{7}{8}$ inches (22.54 cm) in height.
  • Variables:
  • Width: 17.46 cm
  • Height: 22.54 cm
• Column Configuration:
  • Each of the two columns is required to be $3\frac{1}{4}$ inches (8.25 cm) wide.
  • The space between columns is fixed at $\frac{5}{16}$ inch (0.8 cm).
• Margins:
  • Top margin set to exactly 1 inch (2.54 cm) from the top edge.
  • Bottom margin is either $1\frac{1}{8}$ inches (2.86 cm) for 8.5 × 11-inch paper or approximately $1\frac{5}{8}$ inches (4.13 cm) for A4 paper.

Text and Font Specifications

The document dictates strict typographical rules:

• Main Text: 10-point Times, single-spaced.
• Section Headings: Allowed in 10 or 12 point Times.
• Paragraphs: All paragraphs must be indented by 1 pica (approximately $\frac{1}{6}$ inch or 0.422 cm).
• Figure and Table Captions: Set in 9-point Roman type.
• Bibliographical References: Should be listed in 9-point Times and indexed numerically to facilitate clear cross-referencing.

Content and Structural Restrictions

The instructions underline several important restrictions to preserve the integrity of the rebuttal:

• Response Length: The entire rebuttal, including any illustrations, figures, and references, must be confined to a single page. Overlength responses will not be reviewed.
• Content Limitations:
  • Rebuttals must limit themselves to countering factual misunderstandings or providing clarifications.
  • Introducing new experimental results or unrequested contributions is expressly discouraged.
• Numbering and Cross-Referencing:
  • All equations, figures, tables, and bibliographical references are to be numbered distinctly to avoid overlap with the numbering in the main paper. For example, a displayed equation is shown in the template as $B \sin A = A \sin B$, ensuring mathematical elements are clearly identifiable.
  • Variables:
  • $B$: a coefficient or variable in the equation
  • $\sin A$: sine function of angle or variable $A$

Guidelines for Illustrations and Graphs

The template offers best practices for including graphical elements:

• Graphics Alignment: All figures should be centered.
• Scaling: When using the \verb+\includegraphics+ command in LaTeX, the width parameter should be set as a multiple of the line width (e.g., width=0.8\verb+\linewidth+) to ensure consistency with the text.
• Print Quality: Authors must ensure that all figures, when printed, remain legible and the fonts within graphics match the overall document style.

Additional Formatting Instructions

• The template provides explicit directions regarding the update of the paper title and paper ID in the header, reinforcing the importance of maintaining synchronization between the rebuttal and the original submission.
• It also specifies adherence to a bibliography style (e.g., using \texttt{ieee_fullname}) for consistency in referencing.

In summary, the document serves as a comprehensive guide for preparing a well-formatted, concise, and appropriately detailed author response. By following these meticulous specifications, authors ensure that their rebuttal is both review-friendly and compliant with the formal requirements of the submission guidelines.