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
Mip-NeRF 360: Unbounded Anti-Aliased Neural Rad...
Search
peisuke
April 30, 2023
Technology
0
12k
Mip-NeRF 360: Unbounded Anti-Aliased Neural Radiance Fields
第58回 コンピュータビジョン勉強会@関東
深層学習+3D論文読み会
Mip-NeRF 360: Unbounded Anti-Aliased Neural Radiance Fields
peisuke
April 30, 2023
Tweet
Share
More Decks by peisuke
See All by peisuke
VGGT: Visual Geometry Grounded Transformer
peisuke
1
810
AI for Kids:小学生に画像認識を教えてみた話
peisuke
1
41
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
LangChain Toolsの運用と改善
peisuke
5
2.8k
GNeRF: GAN-based Neural Radiance Field without Posed Camera
peisuke
1
790
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
220
Other Decks in Technology
See All in Technology
AWS表彰プログラムとキャリアについて
naoki_0531
1
140
大規模組織にAIエージェントを迅速に導入するためのセキュリティの勘所 / AI agents for large-scale organizations
i35_267
6
330
SAE J1939シミュレーション環境構築
daikiokazaki
1
190
[MIRU25] NaiLIA: Multimodal Retrieval of Nail Designs Based on Dense Intent Descriptions
keio_smilab
PRO
1
130
KCD Lima: eBee in Peru!
lizrice
0
110
【2025 Japan AWS Jr. Champions Ignition】点から線、線から面へ〜僕たちが起こすコラボレーション・ムーブメント〜
amixedcolor
1
110
東京海上日動におけるセキュアな開発プロセスの取り組み
miyabit
0
200
マルチモーダル基盤モデルに基づく動画と音の解析技術
lycorptech_jp
PRO
2
270
Ktor + Google Cloud Tasks/PubSub におけるOTel Messaging計装の実践
sansantech
PRO
1
340
生成AIによる情報システムへのインパクト
taka_aki
1
200
AI時代の知識創造 ─GeminiとSECIモデルで読み解く “暗黙知”と創造の境界線
nyagasan
0
160
メモ整理が苦手な者による頑張らないObsidian活用術
optim
0
150
Featured
See All Featured
The Success of Rails: Ensuring Growth for the Next 100 Years
eileencodes
45
7.5k
Let's Do A Bunch of Simple Stuff to Make Websites Faster
chriscoyier
507
140k
Performance Is Good for Brains [We Love Speed 2024]
tammyeverts
10
1k
The Cost Of JavaScript in 2023
addyosmani
51
8.7k
We Have a Design System, Now What?
morganepeng
53
7.7k
The Straight Up "How To Draw Better" Workshop
denniskardys
235
140k
The World Runs on Bad Software
bkeepers
PRO
70
11k
Building Applications with DynamoDB
mza
95
6.5k
Put a Button on it: Removing Barriers to Going Fast.
kastner
60
3.9k
The Art of Delivering Value - GDevCon NA Keynote
reverentgeek
15
1.6k
Easily Structure & Communicate Ideas using Wireframe
afnizarnur
194
16k
Practical Orchestrator
shlominoach
189
11k
Transcript
Mip-NeRF 360: Unbounded Anti- Aliased Neural Radiance Fields Authors: Jonathan
T. Barron, Ben Mildenhall, Dor Verbin Presenter: @peisuke
ࣗݾհ ໊લɿ౻ຊ ܟհ ॴଐɿ"#&+"ʢ-BCTϥϘʣ ෭ۀɿ.-Λத৺ʹ૬ஊ͔Β։ൃ·Ͱͬͯ·͢ ੋඇ͓͕͚Լ͍͞ ׆ಈɿ5XJUUFS!QFJTVLF (JUIVC IUUQTHJUIVCDPNQFJTVLF 2JJUB
IUUQTRJJUBDPNQFJTVLF 4MJEF4IBSF IUUQTXXXTMJEFTIBSFOFU'VKJNPUP,FJTVLF 4QFBLFS%FDL IUUQTTQFBLFSEFDLDPNQFJTVLF গ͚ͩ͠ॻ͍ͯ·͢
֓ཁ • ͲΜͳจʁ • /F3'ͰϘϦϡʔϜϨϯμϦϯάʹ͓͍֤ͯͷ৭ɾີΛ//Ͱ ग़ྗ͢Δ͜ͱͰը૾Λੜ • /F3'ʹ͓͍ͯɺத৺͔Βԕ͍େͳۭؒΛ//Ͱ࠶ݱ͢Δ͜ͱ͕͠ ͘ɺத৺Ҏ֎ͷ෮ݩ͕͔ͬͨ͠Λղܾ •
ʁ • ۭؒΛมͯ͠ԕ͍ྖҬΛখ͍͞ྖҬʹຒΊࠐΉ͜ͱͰԕ͞ͷΛ ղܾ • ͦͷଞʹɺৠཹʹΑΔߴԽɾਖ਼نԽʹΑΔϊΠζݮͳͲΛ͍ͯ͠ Δ
ख๏ͷσϞ
/F3'ͷ֓ཁʢʣ • ۭؒͷʢҐஔ͖ͷ࣍ݩʣʹؔ͢Δ৭ɾີΛ༧ଌ͢Δ ωοτϫʔΫ • ΧϝϥͷҐஔΛܾΊΔͱɺωοτϫʔΫͷग़ྗ͢ΔΛݩʹϘ ϦϡʔϜϨϯμϦϯά͢Δ͜ͱͰը૾Λੜ 1PTJUJPOBM&ODPEJOH͞Εͨͷ ใ ࣍ϖʔδͰઆ໌
ີ͔Β XΛܭࢉ
/F3'ͷ֓ཁʢʣ • ۭؒͷΛߴ࣍ݩͷಛྔʹมʢQPTJUJPOBMFODPEJOHɺ 1&ʣ͢Δ͜ͱͰߴਫ਼Խ 𝛾 𝒙 = sin 2!𝒙𝜋 ,
cos 2!𝒙𝜋 , … , sin 2"𝒙𝜋 , cos 2"𝒙𝜋
NJQ/F3'ͷ֓ཁʢʣ • 𝛾 𝒙 Λͱͯ͠ѻ͍ɺͦͷҐஔͷ৭ΛϨϯμϦϯά͢Δͱɺ पғͷใΛಘΒΕͣδϟΪʔ͕ൃੜ͢Δ • ࢹઢΛίʔϯͰଊ͑ɺίʔϯͷੵΛ༻͍ΔࣄͰߴਫ਼Խ • ίʔϯΛΨεͰۙࣅɺ1&ͷظΛ͏͜ͱͰɺੵΛ
؆қతʹܭࢉ Ͱͳ͘ɺ֤ྖҬͷ 1&ͷظΛ͏
NJQ/F3'ͷ֓ཁʢʣ • 1&ͨ͠ಛྔͷظΛऔΔͱɺࢹ͔Βԕ͍ྖҬͰߴपྖ Ҭ͕খ͘͞ͳΔ • ڑʹԠͨ͡ૈ͞ΛՃຯͯ͠ωοτϫʔΫ͕৭Λग़ྗͯ͘͠ΕΔ ࢹۙ͘Ͱɺ͕ ڱ͍ͨΊߴपྖҬͷ ใ͕Δ ࢹ͔ΒΕΔͱɺ
͕͘ͳΔͨΊप ͷΈʹͳΔ
NJQ/F3'ͷ՝ • Χϝϥ͔Βԕ͍ྖҬίʔϯ ͕େ͖͘ͳΔ • த৺ʹ͋ΔମҎ֎ͷपғ ڥͷ෮ݩ͕ࠔ த৺ྖҬ΄Ͳࡉ͔ ͍ใ͕ඞཁ पғͷใૈͯ͘ྑ͍
֎ଆͷྖҬͷσʔλ͕ૄʹͳΔͨΊɺ ্ख͘෮ݩͰ͖ͳ͍
4DFOFBOE3BZ1BSBNFUFSJ[BUJPO • த৺͔ΒܘͷྖҬ·ͰมΘΒͣ • ܘҎ্ͷྖҬɺԕ͘ͳΔ΄ͲڑΛॖΊɺܘͷྖҬʹ ແݶԕํ͕ऩ·ΔΑ͏ʹม • ࣍ۙࣅͯ͠ϠίϏߦྻΛ͍ΨεΛม ਤͷପԁҎԼͰม
ৠཹΛ༻͍ͨߴԽʢʣ • NJQ/F3'Ͱɺ·ͣશҬΛૈཻ͍ͰϨΠτϨʔγϯά͠ɺମ͕Կ ॲʹ͋Δͷ͔Λେ·͔ʹѲ • ࣍ʹɺମ͕ଘࡏ͢ΔҐஔʹ੍ݶ͠ɺ࠶ϨΠτϨʔγϯά • ͜ΕΛ܁Γฦ͢͜ͱͰৄࡉͳܗঢ়Λ෮ݩՄೳɺܭࢉ͕͍ͱ͍͏՝͕͋ Δ
ৠཹΛ༻͍ͨߴԽʢ̎ʣ • ૈ͍ྖҬ୳ࡧϑΣʔζͰɺ৭ͷใΛ࣋ͨͳ͍ɺΑΓখ͞ͳϞσϧ ʢ1SPQ.-1ʣͰମͷҐஔΛ୳ࡧ • ࠷ޙͷϨϯμϦϯάͷΈɺ৭ͷใΛ࣋ͭϞσϧʢ/F3'.-1ʣͰ୳ࡧ • ֤ϞσϧʹҰ؏ੑΛ࣋ͨͤΔͨΊɺωοτϫʔΫͷৠཹΛ༻͍Δ
ωοτϫʔΫͷৠཹʹ͍ͭͯ • /F3'.-1͔ΒಘΒΕΔମͷҐஔͷใΛ༻͍ͯɺ1SPQ.-1Λֶश ͢Δ͜ͱͰҰ؏ੑΛอͭ • ྆ํͷωοτϫʔΫؒͰඞཁͱͳΔCJOͷີҟͳΔͷͰ Λൺֱͨ͠ৠཹ͕ग़དྷͳ͍ • /F3'.-1͔ΒಘΒΕΔॏΈͷώετάϥϜΑΓɺ1SPQ.-1ͷώε τάϥϜ͕େ͖͘ͱ͍͏੍Λ͏
• ͜ΕͪΐͬͱෳࡶͳͷͰ࣍ͷϖʔδͰઆ໌ ࠷ऴతʹɺମྖҬʹ͓ ͍ͯX͕େ͖͘ͳΔɻ· ͨɺૈ͍CJOͷ1SPQ.-1 ͕ಘΒΕΔ
• ϨΠ্ʹ͋ΔମͷॏΈXͷώετάϥϜΛߟ͑Δ ώετάϥϜͷൺֱ ϨΠ্ͷମͷॏΈ w ମͷॏΈͷώετάϥϜ
ώετάϥϜͷൺֱ /F3'.-1ͷ ώετάϥϜ 1SPQ.-1ͷ ώετάϥϜ /F3'.-1ͷͱ͋ΔྖҬ5JͷॏΈXJ ΑΓɺ5JΛؚΉྖҬ5Kͷώετά ϥϜXKͷ໘ੵͷํ͕େ͖͘ͳΔ
ਖ਼ଇԽ • /F3'Λֶश͢Δͱɺಛʹԕ͍ΤϦΞʹ͓͍ͯܗঢ়෮ݩͷͨ Ίͷใ͕Γͣෆྑઃఆ͕ൃੜ͠ɺϊΠζ͕ൃੜ • ਖ਼ଇԽʹΑͬͯϊΠζͷݮΛߦ͏
ਖ਼ଇԽ • ॏΈ͆ͷ͕ͳΔ͘σϧλؔʹۙ͘ͳΔΑ͏ͳ੍Λͭ ͚Δ σϧλؔʹͳΔͱɺ X V ɺX W ͕ڞʹͷ࣌
ʹɺVW͕ʹ͖ۙͮɺͦ ΕҎ֎ɺΑ্ͬͯࣜ θϩʹۙͮ͘ 𝑢 ≠ 𝑣ͷ࣌ʹɺw 𝑢 , 𝑤 𝑣 > 0 Ͱ͋ΔͱϖφϧςΟͱͳΔ
ਖ਼ଇԽ • ઌఔͷੵܭࢉͰ͖ͳ͍͕ɺX֤ΠϯλʔόϧͰҰఆ ʹͳΔͷͰɺҎԼͷΑ͏ʹॻ͖දͤΔ • ޯΛܭࢉ͢ΔͱɺਤͷΑ͏ͳํʹॏΈ͕มԽ͢Δྗ͕ಇ͘
࠷దԽ • ը૾ͷ෮ݩϩεɺਖ਼ଇԽʹΑͬͯ/F3'.-1Λɺ࠷ޙͷ߲Ͱ 1SPQ.-1Λֶश • Ϟσϧ • 1SPQ.-1ύϥϝʔλͷӅΕΛ࣋ͭɺϨΠϠʔͷ.-1 • /F3'.-1ύϥϝʔλͷӅΕΛ࣋ͭɺϨΠϠʔͷ.-1
ը૾ͷ෮ݩϩε ਖ਼ଇԽ߲ 1SPQ.-1ͷֶश
࣮ݧ݁Ռ • σʔλ • ৽͍͠σʔληοτɺͭͷ֎ɺͭͷ • ݅ • /F3' NJQ/F3'
/F3' ͱൺֱ • $0-."1ͰࣗݾҐஔਪఆ • ܭࢉڥ • 516WXJUIDPSFT • ࢦඪ • 14/3 44*. -1*14
ఆྔධՁ
ఆੑධՁ
·ͱΊ • NJQ/F3'ͷ՝Ͱ͋ͬͨԕํͷྖҬΛਫ਼ྑ͘෮ݩ͢Δख๏ ΛఏҊ • 4DFOFBOE3BZ1BSBNFUFSJ[BUJPOʹΑΔԕํ෮ݩߴਫ਼Խɺ ৠཹʹΑΔߴԽɺਖ਼ଇԽʹΑΔϊΠζআڈΛఏҊ