SDVR Workshop Slides

7/25/2019 SDVR Workshop Slides

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SDVRWorkshopBasics of Stereoscopic Production


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Company Twitter: @VRTULINCMy Twitter: @CaseySappSocial Media Hashtag: #SDVR

PPT Available at www.vrtul.io/blog


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Agenda

Introduction to VRTL (pr. Virtual)

Inherent Challenges of Live Capture Stereoscopic

Production

Stereo Micro-Lesson

Agenda

Q & A

03

01

02

04


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Experts in Live Capture VR

Scripting

App Development

Post-Production

Filming


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2016

Personal; Immersive

Accessible; Low-Cost

Safe; No Risk

Interactive; Social

Why VR?

WhyVR


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7 Inspirasign.com Inherent Challenges

Monoscopic - 2 camera solutions (Theta, IZugar, Kodak, Pro)

Monoscopic More than 2 cameras solutions

Inherent Challenges of StereoCamera Overview


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Stereoscopic 180 FOV - 2 camera solutions

Stereoscopic >2 camera solutions, circular arrangement



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Stereoscopic - >2 camera solutions, parallel arrangement



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More Cameras expense potential for failure manual adjustments monitoring

Limited live-stitching options for preview (mostlymono) data footprint

3GB / min : 2D 6 cam Hero 4 rig 7GB / min : 3D 14 cam Hero 4 rig

Inherent Challenges of StereoVR Production


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Hardware Needs (beyond mono projects) Stereo capable computer monitor

passive recommended (especially with After Effects) 2x+ High speed storage

most shots will require compositing fixes = more

storage Software Needs

Compositing Software (required) After Effects, Nuke, Fusion, etc.

Additional software (optional / not covered)

Mettle Skybox Studio Dashwood 3D Algorithmic plugins

Inherent Challenges of StereoVR Production


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Stitching complications (beyond mono) Camera sync Stereo geometric alignment

Inherent Challenges of StereoVR Post-Production


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Stitching complications (beyond mono) Color balance



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Stitching complications (beyond mono) Artifact correction



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Stitching complications (beyond mono) Stitch line issues



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Stitching complications (beyond mono) Auto-stitch can lead to unwanted stereo depth artifacts Additional stereo alignment between perspectives

camera holders manufacturing errors

lens aberrations etc

Quality complications Additional image transformations

1 or 2 for mono 3 or 4 for stereo

stitch, S3D alignment, stitch adjust, stereo blending



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Quality complications Final result will be res per eye (compared to mono)



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Micro-Lesson

Micro-Lesson

Assumptions Kolor Autopano Video (& Giga) and After Effects

www.kolor.com www.adobe.com/AfterEffects

Kolor

Proceed as normal: import, sync, stitch frame(s) Giga - edit stitch in Giga

Refine left as normal Right cameras

Delete all auto-solves Solve each to its left camera ONLY

Resolves some vertical alignment issues Solve for distant points only

Sets convergence in the distance Reduces manual stereo adjustments to blend

angles
http://www.kolor.com/http://www.adobe.com/AfterEffectshttp://www.adobe.com/AfterEffectshttp://www.adobe.com/AfterEffectshttp://www.kolor.com/http://www.kolor.com/


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Micro-Lesson

Micro-Lesson

Giga - edit stitch in Giga


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Micro-Lesson

Micro-Lesson

Kolor Let Kolor fix color???


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Micro-Lesson

Micro-Lesson

Kolor Export each cam from Kolor as an image sequence or movie


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Micro-Lesson

Micro-Lesson

Kolor Export each cam from Kolor as an image sequence or

movie


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Micro-Lesson

Micro-Lesson

Kolor Quality considerations

More transforms = softer image Options

High-res interim files (from Kolor)

UV workflow


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Micro-Lesson

Micro-Lesson

After Effects Stitch Left eye completely first!!! Basic steps (left eye)

Roto seams between angles Manual alignment between angles (if needed)

Additional paint and roto corrections (often for FG objs) Adjust color balance Half way done!


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Micro-Lesson

Micro-Lesson

After Effects Stitch Left eye completely first!!!


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Micro-Lesson

Micro-Lesson

After Effects Duplicate Left eye stitch to make Right eye stitch

Inherits all work done to left eye Preview comps

Stereo preview


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Micro-Lesson

Micro-Lesson

After Effects Preview comps

Stereo preview


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Micro-Lesson

Micro-Lesson


Stereo preview


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Micro-Lesson

Micro-Lesson


Color balance preview


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Micro-Lesson

Micro-Lesson


Color balance preview


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Micro-Lesson

Micro-Lesson

After Effects Right cam fixes (to match left cam)

Sync Color balance Adjust geometric attributes to align with right cam

paint strokes, rotos, etc Fix discrepancies (lens flares, glow, etc) Result: each angle is PERFECT!


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Micro-Lesson

Micro-Lesson

After Effects Stereo blending between angles (right eye stitch only)

Adjust stitch lines, placing them in depth Adjust relative depth at seams

Techniques: transforms, grid warps, disparity

warps


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Micro-Lesson

Micro-Lesson

After Effects Export comps to prefered format

image sequences recommended Review, Editing, and Revisions


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Contact Us:

WWW.VRTUL.IO

Casey Sapp, Founder [email protected]

Matt DeJohn, VP of Production [email protected]
mailto:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]

Documents

SDVR Workshop Slides