Final Project Progress

I don’t have a computer with camera inputs yet, so I have been working on the 3D environment and interlacing. Below is a screenshot with the operator interface and a video testing the system. It is only a test, so the interlacing is not to scale and oriented laterally. The final project will be on a screen that is mounted in portrait. I hoped to do about 4 interlaced images, but the software is showing a serious lag with 2, so it might not be possible.

 Operator Interface

(used to calibrate the virtual environment with the physical)

The object controls are on the Left (currently 2 views); Angle Difference (the relative rotation of object 1 vs object 2), X difference (how apart the virtual cameras are), X/Y/Z rotation with a fine adjust, and X/Y/Z translation with a fine adjust

The Backdrop controls are on the Right (currently 2 views, I am using mp4 files until I can get a computer with cameras); Angle Difference (the relative rotation of screen 1 vs screen 2), X/Y/Z rotation with a fine adjust, and X/Y/Z translation with a fine adjust.

In the middle in the interlace control (width of the lines and distance between, if I can get more than 1 perspective to work, I will change this to number of views and width of the lines)

Video of the Working Patch

0:00 – 0:01 changing the relative angle

0:01 – 0:04 changing the relative x position

0:04 – 0:09 changing the XYZ rotation

0:09 – 0:20 adjusting the width and distance between the interlaced lines

0:20 – 0:30 adjusting the scale and XYZ YPR of backdrop 1

0:30 – 0:50 adjusting the scale and XYZ YPR of backdrop 2

0:50 – 0:60 adjusting the scale and XYZ YPR of the model

I have a problem as the object gets closer and farther from the camera… One of the windows is a 3D projector, and the other is a render on a 3D screen with a mask for the interlacing. I am not sure if replacing the 3D projector with another 3D screen with a render on it would add more lag or not, but I am already approaching the processing limits of the computer, and I have not added the tuba or the other views… I could always just add XYZ scale controls to the 3D models, but there is a difference between scale and zoom, so it might look weird.

The difference between zooming in and trucking (getting closer) is evident in the “Hitchcock Zoom”

A Diagram with the Equations for Creating a Parallax Barrier

Image from Baydocks http://displayblocks.org/diycompressivedisplays/parallax-barrier-display/

The First Tests

The resolution is very low because the only lens I could get to match with a monitor was 10 lines per inch lowering the horizontal parallax to just 80 pixels on the 8″ x 10″ lens I had. The first is pre-rendered 9 images. the 2nd is only 3 because Isadora started having trouble. I might pre-render the goose and have the responses trigger a loop (like the old Dragon’s Lair game). The draw back, the character would not be able to look at the person interacting. But with only 3 possible views, it might not be apparent he was tracking you.