Henri Verdier est intervenu auprès d'une commission d'enquête et il porte un message que j'aimerais entendre plus souvent.
Les chefs d'entreprise commencent tout juste à prendre conscience que leur supply-chain n'est pas seulement physique, elle est aussi numérique et qu'il faut la sécuriser.
Cela passera autant que possible par le choix de solutions open-source (ouvertes, adaptables, facilement interopérables, sans lock-in de prestataires intermédiaires 💸💸) et l'internalisation progressive de leurs infrastructures (ce que nous appelons le post-cloud chez France nuage) derrière du zero-trust network notamment pour se protéger autant que possible des IA offensives dont nous ne subissons actuellement que les prémices du tsunami à venir.
L'IA tue progressivement le coût du logiciel pur (ERP, CRM, e-commerce…) ; restent donc, comme valeur patrimoniale et avantage concurrentiel pour l'entreprise, ses données et son infrastructure, si elles sont internalisées.
Contrôler ses données et son infrastructure, c'est reprendre en main son destin et ses capacités de décision et de direction stratégique.
Le système d’information est la colonne vertébrale de l’entreprise. On ne sous-traite pas sa colonne vertébrale.
November 2024. I'm standing at 2,430 meters on a ridge above the Urubamba
Valley, staring at Machu Picchu. Like millions before me, I'm blown away.
Unlike most of them, I have an iPhone with a LiDAR sensor in my backpack.
I'd been annoyed for a while by how hard it is to find downloadable 3D data
of major archaeological sites. You get blurry photogrammetry on Sketchfab,
paywalled academic datasets, or just nothing. Try finding a 3D model of the
Sacsayhuaman walls. Go ahead, I'll wait. There isn't one.
So I made one.
Machu Picchu, scan #1. iPhone LiDAR, November 2024.
What I did
During a trip across Peru, I scanned 13 archaeological sites with the LiDAR
sensors on an iPhone. Machu Picchu alone got 15 separate scans: walls,
terraces, the astronomical observatory, individual stone joints where you
can see exactly how blocks interlock without mortar. I captured the
polygonal walls of Sacsayhuaman (blocks up to 200 tonnes, and no, I still
don't understand how they moved them), the concentric terraces of Moray,
what's left of Qorikancha's walls after the Spanish stripped the gold off,
the still-functioning aqueducts at Tipon. I also scanned the Sitamarhi Caves
in Bihar, India.
47 scans. 14 sites. 2 countries. 17 GB of raw 3D data.
Sacsayhuaman. Blocks up to 200 tonnes, fitted without mortar.
Every scan is interactive. You rotate and zoom in your browser, no app
needed.
The sites
Peru, 13 sites. Machu Picchu has 15 scans covering walls, terraces, and the
Intihuatana solar clock. Sacsayhuaman has its megalithic zigzag walls
stretching 600 meters. Ollantaytambo got 8 scans across the fortress, the
Temple of the Sun monoliths, and the water channels. Qorikancha is the
Temple of the Sun in Cusco. Chinchero is the royal estate of Tupac Inca
Yupanqui, sitting at 3,762 meters. Moray has those eerie circular terraces
with 15°C temperature swings between levels. Tipon is pure hydraulic
engineering, aqueducts that still carry water today. Q'enqo has zigzag
channels and subterranean chambers carved into raw limestone. Puka Pukara,
the Red Fortress, was a checkpoint on the road to Antisuyo. Amaru Punku is
the Gate of the Serpent near Ollantaytambo. The Bath of the Ñusta is a
ceremonial fountain where water channels are cut into a single rock face. I
also captured some street-level Inca walls in Cusco itself, and the
Intihuatana observatory stone at Machu Picchu as a separate scan.
Ollantaytambo, scan #3. Temple of the Sun monoliths.Moray. Concentric terraces with 15°C temperature differentials between levels.Q'enqo. Zigzag channels carved into raw limestone.
India, 1 site: the Sitamarhi Caves in Bihar, rock-cut caves tied to the
Ramayana.
Sitamarhi Caves, Bihar, India.
Why an iPhone?
Professional terrestrial LiDAR scanners cost $50K+ and take hours to set up
per scan. The iPhone sensor does it in minutes. The resolution is lower,
obviously. But I could scan a wall section between tour groups, in rain,
while hiking between sites. Speed and portability won over precision.
Qorikancha, Temple of the Sun. The Inca stonework underneath the Spanish convent.Tipon. Aqueducts built 600 years ago, still carrying water.
The tech stack
Each scan is exported as GLB for browser viewing and USDZ for AR on iOS.
Source files are available in STL, XYZ point clouds, PLY, DXF, DAE, FBX, and
OBJ. 204 files total.
The viewer is a custom
Three.js fullscreen viewer I built. No
iframe, no third-party embed. DRACO-compressed GLB files load straight in
the browser. The 17 GB of assets sit on Cloudflare R2 behind a CDN. The site
runs on Netlify. Everything is static. No backend, no login. Click a scan,
it loads.
Download everything
All files are free. Every scan card has download buttons for GLB, USDZ, STL,
XYZ, PLY and more.
