Category: Visual Effects

Exploring the Polly Cove Petroglyph

By , May 13, 2012 3:46 pm

In Polly Cove, just outside of West Dover, Nova Scotia there is a granite boulder with a petroglyph carving of a pattern similar to a Celtic swirl. The carving is located near the top of the hill to the left of the old foundation.

I thought it would be interesting to make a 3D reconstruction of the petroglyph carving using image analysis software. The software works by comparing parallax (change in viewpoint) from a series of images and generates a series of 3D points. In order to use the Bundler SfM photogrammetry software I took a series of 10 photos of the double spiral pattern. To improve the accuracy of the experiment I used a slide bar to shift the camera by 1 centimeter for each photo.

There is a double spiral petroglyph on a granite boulder in Polly Cove.

There is a double spiral petroglyph on a granite boulder in Polly Cove.

The petroglyph is located near the top of the rock.

The petroglyph is located near the top of the rock.

Continue reading 'Exploring the Polly Cove Petroglyph'»

Creating Fractals in Maya 2013

By , May 7, 2012 11:22 am

Autodesk Maya 2013 now includes a new 2D / 3D fractal system that can create fun and exciting fractal shapes like a mandelbox or mandelbulb right in your Maya viewport. The system works by using a Maya fluid effects "fluid container" to support rendering the fractal voxels with either a volume render or a hard surface render. You can also create fractal textures in the Hypershade.

Maya 2013 allows you to create complex fractal shapes using a fluid container.

Maya 2013 allows you to create complex fractal shapes using a fluid container.

Continue reading 'Creating Fractals in Maya 2013'»

Vase With Twelve Sunflowers Phantogram

By , May 3, 2012 11:27 pm
Vase With Twelve Sunflowers Phantogram

Vase With Twelve Sunflowers Phantogram

This is a stereoscopic phantogram conversion of Vincent van Gogh’s painting "Vase With Twelve Sunflowers". It should be viewed with Red / Cyan anaglyph 3D glasses at a 45 degree angle.

This computer generated image was created in Autodesk Maya using a technique called camera projection. I started by creating 3D geometry that approximated the shape of each element in Vincent van Gogh's painting. Then each object in the painting was extracted using rotoscoping into separate 2D texture maps. The textures were then projection mapped onto the 3D geometry. A stereo camera rig was used in Maya to render the left and right image pairs. I processed the left and right images using Apple Shake, Adobe Photoshop and StereoPhotoMaker.  I used SPM to colour correct the anaglyph image to reduce colour ghosting.

This Vase With Twelve Sunflowers Autodesk Maya scene was created for a previous camera projection experiment where I moved a camera around inside the painting.

The camera projection was created in Autodesk Maya.

The camera projection was created in Autodesk Maya.

These are the source images I used as the textures for the camera projection.

These are the source images I used as the textures for the camera projection.

Stereoscopic 3D Phantogram Images

By , May 3, 2012 11:22 pm

These are Stereoscopic 3D Phantogram images. They should be viewed with Red / Cyan Anaglyph 3D glasses. The images are designed to be viewed on a device like a tablet computer where the screen is set flat on a table and the viewer is looking down at the screen at a 45 degree angle. You can click to enlarge the images.

Chess Board

Chess Board

This is a stereoscopic phantogram image of a chess match. The chess board photos were captured using a 6cm stereo base with a Canon D60 DSLR Camera on a Jasper Engineering slide bar. I processed the image pairs in Adobe Photoshop and StereoPhotoMaker.

Canon D60 Camera

Canon D60 Camera

This is a stereoscopic phantogram image of a Canon D60 camera resting on a grassy lawn. The photos were captured using a Canon Powershot SD780IS camera on a Jasper Engineering slide bar. I processed the image pairs in Adobe Photoshop and StereoPhotoMaker.

Domemaster3D Stereoscopic Shader for Autodesk Maya

By , April 19, 2012 10:05 am

This is an early test rendering with the Domemaster3D Stereoscopic Shader for Autodesk Maya.

The Domemaster stereo shader is designed to create stereoscopic fulldome renderings for use in planetariums and other full dome theaters.  Roberto Ziche created the domemaster stereo shader for 3D Studio Max and I have worked on adding Autodesk Maya support.

Currently the Domemaster stereo shader is compiled for mental ray on Mac OS X 64-bit, and Windows 32-bit and 64-bit.

You can download the latest version of the Domemaster3D shader here:
domemaster3D.zip

The source code is available on Google Code:
http://code.google.com/r/andrewhazelden-domemaster-maya/

Using the domemaster shader in Maya.

Using the domemaster shader in Maya.

Continue reading 'Domemaster3D Stereoscopic Shader for Autodesk Maya'»

Preparing for the First Annual Inter-Gallactic Phantogram Competition and Exhibit

By , March 19, 2012 8:28 am

Recently I got a message from Barry Rothstein on the Phantogram user group announcing an exciting contest for stereoscopic 3D photography enthusiasts.

CALL FOR ENTRIES: in the "First Annual Inter-Gallactic Phantogram Competition and Exhibit". Entry deadline is May 15, 2012. I'll shortly start announcing this on the 3-D sites, and I invite you to spread the news. I've lined up two out of three judges, stereographers Achim Bahr, and Terry Wilson. Categories will be: 1) Nature; 2) Live Subject; 3) Still Life; and 4) CGI. Images will be judged on iPads, and are to be submitted in RGB .JPG files. The iPad's native resolution is 1024x768 pixels, and images can be submitted either in vertical or horizontal orientation. Submitting images denotes a willingness to have them posted online, and to be exhibited in print or digital form. There will be prizes for winners, these will be announced soon, as hopefully I'll be able to line up a few sponsors.

Over the last weekend I got out my photography gear and started taking several new stereoscopic 3D Phantogram images to prepare for the contest. Red / Cyan 3D glasses are required to view the photos.

Carved Whalebone Scrimshaw Phantogram

Carved Whalebone Scrimshaw Phantogram

Checkmate Ends the Game Phantogram

Checkmate Ends the Game Phantogram

Chess Match Phantogram

Chess Match Phantogram

PSION Series 5 PDA Phantogram

This is a stereoscopic phantogram image of a PSION Series 5 PDA

Strawberry Dessert

This is a stereoscopic phantogram image of a strawberry dessert.