Binocular view (image based lighting part 1)

March 19, 2013

This is a little snippit of “R&D” work i did on “Alle for To“.

I was tasked with doing a Binocular look across a handfull of scenes, i had allready done a Binocular look for “Over Kanten” (Look here, 14 sec into the video: ), but the director wanted a more significant look, that should blend with the scene in terms of light and feel.

So i created a procedual Nuke script that took light, color and movement of the scene and used it to make the Binocular look. Here was the final result:


Creating the overall look.

Here is one of the  Binoculars i studied for my look.


Looking through the Binocular with a camera all the sides go almost black and only a slight reflection is gathering along the edges, which was the look i went for in “Over Kanten”, so to make it blend even more i decided to go for a camera through the optics section. With this section alone you get alot more light across the edges and these edges are much more defined. A fun fact with looking through a Binocular with a camera is that the rolling shutter gets much much more apparent.


The lensdistortion on the optics are not too bad. Here are a look at the distortion offset.

Skærmbillede 2013-03-19 kl. 22.26.23


Image based Lighting

After creating the final look, i cut the Binocular into 3 sections. One front for catching highlights, one mid for catching general lights, and one back for a refracted “rainbow” light. Each of these was mapped to catch light from diffrent parts of the eye pieces as seen in the example below:

Binocular “sway”

This is very much a personal preference but i just don’t like having the Binocular view slapped stiff ontop of the plate. You could add some shake to it but it usually looks fake when doing long or quick pans.

So i ended up writing my own little formula to get the Binocular to “sway” behind the camera of the plate. Using a motion vector averaged from 0 to -5 frames from the current frame you get this silky smooth movement chasing after the plate camera, making it look like Binocular is catching up to your head movement. This also ment that i could easily pop this camera into any scene without having to do manual keyframes.


Interactive Lighting

March 17, 2013

I had an idea about “real life AOV’s”, an attempt to do relight of real footage in post.

By using direct colored lights i was able to fully control the light of the scene in post with just a single video take. Sadly the limitation of this is that it only works in black and white. =(

Realtime Relighting from Hagbarth on Vimeo.

Motionblur-less Tracking Marker.

March 17, 2013

After dealing with some very problematic 3d tracking on some high motion blur footage, i got the idea of making a motion-blur less tracking marker.

The idea is very simple.
*High-frequency LED diodes attached to a small computer
*A Camera with a genlock option
*Making a small piece of code that translates the genlock timing into pulses, with intensity that are multiplied by the shutter speed (to compensate for brightness loss)

And wolla, a Motionblur-less Tracking Marker that always display as a perfect dot in your motionblur hell.

Here is a example, 5 led\’s, 1 being genlocked: