Diffusion Probabilistic Models for 3D Point Cloud Generation (2103.01458v2)

Abstract: We present a probabilistic model for point cloud generation, which is fundamental for various 3D vision tasks such as shape completion, upsampling, synthesis and data augmentation. Inspired by the diffusion process in non-equilibrium thermodynamics, we view points in point clouds as particles in a thermodynamic system in contact with a heat bath, which diffuse from the original distribution to a noise distribution. Point cloud generation thus amounts to learning the reverse diffusion process that transforms the noise distribution to the distribution of a desired shape. Specifically, we propose to model the reverse diffusion process for point clouds as a Markov chain conditioned on certain shape latent. We derive the variational bound in closed form for training and provide implementations of the model. Experimental results demonstrate that our model achieves competitive performance in point cloud generation and auto-encoding. The code is available at \url{https://github.com/luost26/diffusion-point-cloud}.

• The paper presents a diffusion probabilistic model that refines random noise into structured 3D point clouds.
• It employs a forward diffusion process alongside a learned reverse process to accurately capture complex shape distributions.
• Empirical results demonstrate improved quality and diversity in generated 3D shapes compared to traditional models.

LaTeX Author Guidelines for CVPR Proceedings

This document serves as an author guideline for preparing manuscripts to be submitted to CVPR proceedings. The paper comprehensively details the LaTeX style template that authors should follow to ensure consistency and adherence to the formatting standards set forth by the conference. Below, key aspects of the guidelines, implications for authors, and potential areas for further discussion within the community are highlighted.

Introduction and Scope

The paper begins by emphasizing the importance of strict adherence to the formatting guidelines provided by CVPR. This ensures uniformity in the presentation of research work, facilitating a smoother review process. Notably, the guidelines reflect several updates from previous iterations, which may include typographic adjustments and policy changes.

Submission Policy and Formatting

Significant considerations are made regarding the submission process:

• Paper Length: Authors must submit papers not exceeding eight pages, excluding references. This limitation is strictly enforced to streamline the review process and manage the volume of content reviewers must evaluate.
• Blind Review Protocol: The guidelines underscore the necessity of anonymizing submissions, emphasizing correct attribution and citation practices to maintain the integrity of the double-blind review.
• Section and Equation Numbering: Consistent numbering of sections and equations is required to enable effective referencing throughout the manuscript.

The paper also delineates technical details related to page layout, margin settings, typography, and figure placement. Authors are instructed to use specific fonts and maintain justified text alignment to conform with the defined aesthetic and structural standards.

Document Elements

Various elements of the manuscript are covered:

• Abstract and Title: The format of the abstract and title is specified with explicit instructions on font size and positioning, ensuring prominent yet concise presentation.
• Text and Headings: The delineation of headings using a hierarchical font and style system aids in the logical structuring of content, improving readability and navigation.
• Figures and Tables: Recommendations are provided on integrating graphics effectively, prioritizing clarity and scalability for both digital and print formats.

Practical Implications

For practitioners preparing their submissions, these guidelines offer a streamlined framework to follow, reducing the likelihood of rejections based on formatting issues. Compliance also assists in the preservation of the conference's professional appearance, enhancing the publication's overall presentation. Adhering strictly to these instructions becomes a crucial part of the manuscript preparation process.

Theoretical Implications

From a theoretical standpoint, these guidelines reflect broader discussions in academic publishing around accessibility, standardization, and the impact of formatting on the clarity and dissemination of research findings. The emphasis on uniform presentation raises questions about the balance between creativity in expression and the necessity for standardization in academic communications.

Future Directions

As academic publishing evolves, it will be essential to reassess and update formatting guidelines to accommodate new types of content, such as interactive graphics or datasets. Additionally, continued dialogue within the community about the implications of strict formatting on various disciplines may yield insights into more flexible yet effective formats that cater to innovations in research presentation.

In conclusion, the LaTeX Author Guidelines for CVPR Proceedings provide essential instructions that authors must follow to meet the standards of formatting and submission. The guidelines are critical in maintaining the quality and coherence of publications in the conference proceedings, thereby supporting the wider dissemination and impact of research presented at the CVPR conference.