The Key to Cleaner 3D Scans: Cross-Polarization

Опубликовано: 19 Октябрь 2024
на канале: William Faucher

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Today’s tutorial teaches you everything you need to know about Cross-Polarization. The necessary hardware/gear, and why it matters. It is absolutely essential if you’re trying to scan an object that has a very shiny/reflective surface. Taking a look at the renders in Unreal Engine 5, it doesn’t take long to see the vast difference between the two approaches, the cross-polarized result is FAR superior. The scans done in this tutorial were made with RealityCapture.

GET 50% off your purchase of 3500 PPI credits for RealityCapture using "WILLIAM50" as your discount code!
For more information on RealityCapture:
www.capturingreality.com

Important links:
Intro to RealityCapture to UE5 Workflow Video:    • RealityCapture to UE5 - Workflow Tuto...

Scanning all sides of objects in Reality Capture:    • How to 3D Scan All Sides of Objects -...

MAJOR THANKS to Grzegorz Baran for his in-depth guides and insights on photogrammetry. Find his channel and video I referred to here:

Grzegorz Baran’s Cross-Polarization Explained:    • Cross Polarisation Explained by Grzeg...

Grzegorz Baran’s Channel:    / grzegorzbaranart

Necessary gear for Photogrammetry:

Flashes:
Godox AR400 Ring Flash: https://geni.us/83IB0V
Elinchrom ELB 500 TTL Duo: https://geni.us/ElinchromELB500

Polarizing Filters:
Tiffen Circular Polarizing Filter: https://geni.us/XB38L
Nikon Circular Polarizing Filter: https://geni.us/acILA1z
Ring Flash Polarizer: https://geni.us/FlashPolarize

Transmitters and Other:
ColorChecker Passport Photo II: https://geni.us/tUEDhx
Godox XT-16 Transmitter/Receiver Kit: https://geni.us/7icY2
Flash Sync Cable: https://geni.us/DlZ63

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Timestamps:

00:00 - Intro
01:00 - CapturingReality
01:30 - What is Cross-Polarization?
03:39 - Polarization Explanation
04:46 - Necessary Gear/Hardware
05:56 - Gear: Polarizers
07:49 - Gear: ColorChart
08:07 - Gear: Transmitters
08:53 - Assembling the Camera Rig
09:12 - Why do we need this?
10:21 - Important Steps Before Shooting
11:47 - Scanning
12:28 - Into RealityCapture
13:36 - Limitations of Cross-Polarization
14:53 - Conclusion & Thanks

--------Cameras and Gear Used To Film This Video ------
DISCLAIMER: This video/description contains affiliate links, which means that if you click on one of the product links, I’ll receive a small commission. As an Amazon Associate I earn from qualifying purchases. This helps support the channel and allows us to continue to make videos like this. Thank you for the support!

My Streaming / Recording Setup (How this Video was Recorded)

Nikon Z6II : https://geni.us/OPxBG

Sigma 35mm f/1.4 Art : https://geni.us/ByMa

Deity S-Mic 2 Shotgun Microphone: https://geni.us/ed6pyO

Aputure MC Pocket LED: https://geni.us/uVZNl

Godox LEDP 260c LED Panel: https://geni.us/OgidwX

Godox Parabolic Softbox : https://geni.us/oHZ2b9

Godox SL-60W Studio Light: https://geni.us/68wx