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
peisuke
December 12, 2021
Technology
1
800
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
VGGT: Visual Geometry Grounded Transformer
peisuke
1
1.1k
AI for Kids:小学生に画像認識を教えてみた話
peisuke
1
46
LangGraphで始めるマルチエージェントシステム
peisuke
14
4.6k
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
12k
LangChain Toolsの運用と改善
peisuke
5
2.8k
TTS Skins: Speaker Conversion via ASR
peisuke
0
410
A Quantum Computational Approach to Correspondence Problems on Point Sets
peisuke
0
740
F0-Consistent Many-to-many Non-parallel Voice Conversion via Conditional Autoencoder
peisuke
0
230
Other Decks in Technology
See All in Technology
LLMを搭載したプロダクトの品質保証の模索と学び
qa
1
1.1k
Firestore → Spanner 移行 を成功させた段階的移行プロセス
athug
1
510
品質視点から考える組織デザイン/Organizational Design from Quality
mii3king
0
210
EncryptedSharedPreferences が deprecated になっちゃった!どうしよう! / Oh no! EncryptedSharedPreferences has been deprecated! What should I do?
yanzm
0
500
職種の壁を溶かして開発サイクルを高速に回す~情報透明性と職種越境から考えるAIフレンドリーな職種間連携~
daitasu
0
200
Create Ruby native extension gem with Go
sue445
0
140
企業の生成AIガバナンスにおけるエージェントとセキュリティ
lycorptech_jp
PRO
3
200
エンジニアリングマネージャーの成長の道筋とキャリア / Developers Summit 2025 KANSAI
daiksy
3
1.2k
データ分析エージェント Socrates の育て方
na0
8
3.1k
未経験者・初心者に贈る!40分でわかるAndroidアプリ開発の今と大事なポイント
operando
6
770
OCI Oracle Database Services新機能アップデート(2025/06-2025/08)
oracle4engineer
PRO
0
180
20250913_JAWS_sysad_kobe
takuyay0ne
2
250
Featured
See All Featured
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
rmw
35
3.1k
Fantastic passwords and where to find them - at NoRuKo
philnash
52
3.4k
Bash Introduction
62gerente
615
210k
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
mongodb
48
9.7k
Practical Orchestrator
shlominoach
190
11k
実際に使うSQLの書き方 徹底解説 / pgcon21j-tutorial
soudai
PRO
188
55k
The Illustrated Children's Guide to Kubernetes
chrisshort
48
50k
Chrome DevTools: State of the Union 2024 - Debugging React & Beyond
addyosmani
7
850
The World Runs on Bad Software
bkeepers
PRO
70
11k
Let's Do A Bunch of Simple Stuff to Make Websites Faster
chriscoyier
507
140k
RailsConf 2023
tenderlove
30
1.2k
Building Better People: How to give real-time feedback that sticks.
wjessup
368
19k
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