Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
GNeRF: GAN-based Neural Radiance Field without ...
Search
Sponsored
·
Your Podcast. Everywhere. Effortlessly.
Share. Educate. Inspire. Entertain. You do you. We'll handle the rest.
→
peisuke
December 12, 2021
Technology
1
830
GNeRF: GAN-based Neural Radiance Field without Posed Camera
第9回全日本コンピュータビジョン勉強会
ICCV2021論文読み回発表資料
GNeRF: GAN-based Neural Radiance Field without Posed Camera
peisuke
December 12, 2021
Tweet
Share
More Decks by peisuke
See All by peisuke
Moto: Latent Motion Token as the Bridging Language for Learning Robot Manipulation from Videos
peisuke
0
220
VGGT: Visual Geometry Grounded Transformer
peisuke
1
1.6k
AI for Kids:小学生に画像認識を教えてみた話
peisuke
1
84
LangGraphで始めるマルチエージェントシステム
peisuke
14
4.9k
Self-RAG: Learning to Retrieve, Generate and Critique through Self-Reflections
peisuke
9
1.6k
Mip-NeRF 360: Unbounded Anti-Aliased Neural Radiance Fields
peisuke
0
13k
LangChain Toolsの運用と改善
peisuke
5
2.9k
TTS Skins: Speaker Conversion via ASR
peisuke
0
430
A Quantum Computational Approach to Correspondence Problems on Point Sets
peisuke
0
780
Other Decks in Technology
See All in Technology
Agent Payments Protocolで実装するAIエージェント間取引
tokio007
0
160
Agent Ready になるためにデータ基盤チームが今年やること / How We're Making Our Data Platform Agent-Ready
zaimy
0
170
歴史に敬意を! パラシュートVPoEが組織と共同で立ち上がる信頼醸成オンボーディング
go0517go
PRO
0
220
Kubernetes環境周りの責任範囲をいい機会なので考える / Taking the Opportunity to Clarify Kubernetes Responsibilities
kohbis
1
110
バニラVisaギフトカードを棄てるのは結構大変
meow_noisy
0
130
【Developers Summit 2026】Memory Is All You Need:コンテキストの「最適化」から「継続性」へ ~RAGを進化させるメモリエンジニアリングの最前線~
shisyu_gaku
5
740
Amazon Bedrock AgentCoreでブラウザ拡張型AI調査エージェントを開発した話 (シングルエージェント編)
nasuvitz
2
110
OCI技術資料 : 外部接続 VPN接続 詳細
ocise
1
10k
Scrum Fest Morioka 2026
kawaguti
PRO
2
650
器用貧乏が強みになるまで ~「なんでもやる」が導いたエンジニアとしての現在地~
kakehashi
PRO
5
550
AWSが推進するAI駆動開発ライフサイクル入門 〜 AI駆動開発時代に必要な人材とは 〜/ introduction_to_aidlc_and_skills
fatsushi
7
4.8k
インシデント対応入門
grimoh
7
5.1k
Featured
See All Featured
The Art of Programming - Codeland 2020
erikaheidi
57
14k
BBQ
matthewcrist
89
10k
Navigating the moral maze — ethical principles for Al-driven product design
skipperchong
2
270
[RailsConf 2023] Rails as a piece of cake
palkan
59
6.3k
GitHub's CSS Performance
jonrohan
1032
470k
AI Search: Implications for SEO and How to Move Forward - #ShenzhenSEOConference
aleyda
1
1.1k
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
sstephenson
162
16k
Rails Girls Zürich Keynote
gr2m
96
14k
The MySQL Ecosystem @ GitHub 2015
samlambert
251
13k
Darren the Foodie - Storyboard
khoart
PRO
3
2.6k
The Cult of Friendly URLs
andyhume
79
6.8k
Understanding Cognitive Biases in Performance Measurement
bluesmoon
32
2.8k
Transcript
GNeRF: GAN-based Neural Radiance Field without Posed Camera @peisuke 9
ABEJA Twitter @peisuke Github https://github.com/peisuke Qiita https://qiita.com/peisuke SlideShare https://www.slideshare.net/FujimotoKeisuke
• • GNeRF: GAN-based Neural Radiance Field without Posed Camera
• • NeRF • • • GAN Radiance Field • RF
NeRF • / 5 •
• • (x,y,z)T (φ1,θ1)T (φ2,θ2)T (x,y,z) φ2,θ2 (x,y,z) φ1,θ1
NeRF • • •
NeRF • NeRF in the Wild • NeRF • iNeRF
• iNeRF NeRF in the Wild BP
条件 iNeRF NeRF-- IDR GNeRF(提案⼿法) 事前学習 必要 不要 不要 不要
粗いカメラ座標 必要 必要 必要 不要 前⽅のみの制約 不要 必要 不要 不要 マスク 不要 不要 必要 不要 • •
• • • • • GAN Radiance Field • RF
• Phase A Phase B
RF • D E 3
GAN Real • • Discriminator Real • Dynamic Patch Sampling
/ 16x16 • Dynamic Patch Sampling
GAN Fake • • NeRF 16x16 • G
• 6 𝑹 = 𝑟!! 𝑟!" 𝑟!# 𝑟"! 𝑟"" 𝑟"#
𝑟#! 𝑟#" 𝑟## 𝒓 = 𝑟!! 𝑟!" 𝑟!# 𝑟"! 𝑟"" 𝑟"# $ • SO(3) NN • On the Continuity of Rotation Representations in Neural Networks
• Inversion network • Static Patch Sampling • E •
Static Patch Sampling
G G D G
• • Inversion network • refinement
• Refinement
• • • • • Photometric loss
• • Generator • NeRF • Discriminator • Instance Normalization
Spectral Normalization • Inversion network • Vision Transformer • • A • A B 1 iteration • B
• • COLMAP NeRF C+n • Refine C+r • Ground
Truth NeRF G+n • • Synthetic-NeRF image size: 400x400 DTU 500x400 • 100 • • Peak Signal-to-Noise Ratio SSIM LPIPS • / • Single TAITAN GPU 30
COLMAP •
• COLMAP Drums
難しいシーン 特徴の少ない シーン
IDR • 3D IDR • IDR • PNSR •
• COLMAP • Drums Lego COLMAP
Ablation Study • • GAN InvNet. PhaseB • • A
B A ABABABAB B
• • • COLMAP • •
• NeRF • • GAN RF • RF • •
• COLMAP