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
1k
AI for Kids:小学生に画像認識を教えてみた話
peisuke
1
43
LangGraphで始めるマルチエージェントシステム
peisuke
13
4.6k
Self-RAG: Learning to Retrieve, Generate and Critique through Self-Reflections
peisuke
9
1.5k
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
AIエージェント就活入門 - MCPが履歴書になる未来
eltociear
0
170
AIは変更差分からユニットテスト_結合テスト_システムテストでテストすべきことが出せるのか?
mineo_matsuya
5
3.1k
[OCI Skill Mapping] AWSユーザーのためのOCI(2025年8月20日開催)
oracle4engineer
PRO
2
110
サイボウズフロントエンドの横断活動から考える AI時代にできること
mugi_uno
4
1.4k
キャリアを支え組織力を高める「多層型ふりかえり」 / 20250821 Kazuki Mori
shift_evolve
PRO
2
280
マイクロモビリティシェアサービスを支える プラットフォームアーキテクチャ
grimoh
1
160
あなたの知らない OneDrive
murachiakira
0
230
Oracle Exadata Database Service on Cloud@Customer X11M (ExaDB-C@C) サービス概要
oracle4engineer
PRO
2
6.4k
夢の印税生活 / Life on Royalties
tmtms
0
270
[OCI Technical Deep Dive] OracleのAI戦略(2025年8月5日開催)
oracle4engineer
PRO
1
260
Android Studio の 新しいAI機能を試してみよう / Try out the new AI features in Android Studio
yanzm
0
240
Observability for LLM Application lifecycle
ivry_presentationmaterials
1
230
Featured
See All Featured
Fashionably flexible responsive web design (full day workshop)
malarkey
407
66k
Large-scale JavaScript Application Architecture
addyosmani
512
110k
Chrome DevTools: State of the Union 2024 - Debugging React & Beyond
addyosmani
7
820
Responsive Adventures: Dirty Tricks From The Dark Corners of Front-End
smashingmag
251
21k
CSS Pre-Processors: Stylus, Less & Sass
bermonpainter
358
30k
XXLCSS - How to scale CSS and keep your sanity
sugarenia
248
1.3M
GraphQLとの向き合い方2022年版
quramy
49
14k
For a Future-Friendly Web
brad_frost
179
9.9k
Designing Dashboards & Data Visualisations in Web Apps
destraynor
231
53k
Understanding Cognitive Biases in Performance Measurement
bluesmoon
29
1.8k
Sharpening the Axe: The Primacy of Toolmaking
bcantrill
44
2.4k
StorybookのUI Testing Handbookを読んだ
zakiyama
30
6k
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