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
780
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
AI for Kids:小学生に画像認識を教えてみた話
peisuke
1
28
LangGraphで始めるマルチエージェントシステム
peisuke
13
4.5k
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
11k
LangChain Toolsの運用と改善
peisuke
5
2.8k
TTS Skins: Speaker Conversion via ASR
peisuke
0
400
A Quantum Computational Approach to Correspondence Problems on Point Sets
peisuke
0
720
F0-Consistent Many-to-many Non-parallel Voice Conversion via Conditional Autoencoder
peisuke
0
210
YOLACT real-time instance segmentation
peisuke
1
300
Other Decks in Technology
See All in Technology
宇宙パトロール ルル子から考える LT設計のコツ
masakiokuda
2
100
Introduction to Sansan Meishi Maker Development Engineer
sansan33
PRO
0
280
(新URLに移行しました)FASTと向き合うことで見えた、大規模アジャイルの難しさと楽しさ
wooootack
0
700
kubellが挑むBPaaSにおける、人とAIエージェントによるサービス開発の最前線と技術展望
kubell_hr
0
290
Grafana MCP serverでなんかし隊 / Try Grafana MCP server
kohbis
0
340
What's new in OpenShift 4.19
redhatlivestreaming
1
220
「規約、知識、オペレーション」から考える中規模以上の開発組織のCursorルールの 考え方・育て方 / Cursor Rules for Coding Styles, Domain Knowledges and Operations
yuitosato
6
1.6k
Tensix Core アーキテクチャ解説
tenstorrent_japan
0
360
Contract One Engineering Unit 紹介資料
sansan33
PRO
0
6.4k
Digitization部 紹介資料
sansan33
PRO
1
4.2k
ObsidianをMCP連携させてみる
ttnyt8701
2
110
Tenstorrent 開発者プログラム
tenstorrent_japan
0
310
Featured
See All Featured
The Art of Delivering Value - GDevCon NA Keynote
reverentgeek
14
1.5k
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
danielanewman
228
22k
Measuring & Analyzing Core Web Vitals
bluesmoon
7
480
Reflections from 52 weeks, 52 projects
jeffersonlam
350
20k
The Pragmatic Product Professional
lauravandoore
35
6.7k
Evolution of real-time – Irina Nazarova, EuRuKo, 2024
irinanazarova
8
780
How to Ace a Technical Interview
jacobian
276
23k
JavaScript: Past, Present, and Future - NDC Porto 2020
reverentgeek
48
5.4k
The Illustrated Children's Guide to Kubernetes
chrisshort
48
50k
Save Time (by Creating Custom Rails Generators)
garrettdimon
PRO
31
1.2k
Fantastic passwords and where to find them - at NoRuKo
philnash
51
3.3k
The Straight Up "How To Draw Better" Workshop
denniskardys
233
140k
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