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Posts Tagged ‘3d’

First Low Resolution 3D Point Cloud from Proto-4F

October 25th, 2010 Comments off
The cameras are finally calibrated, and the communications and power systems are installed and working. Now I can finally begin producing scans to test and fine tune the software. 7-shot Today I scanned part of the lab, and the animated GIF illustrates the 3D nature of the scan. When producing a 3D model, multiple perspectives must be captured to fill in occlusions (blind spots). For this model, three scans from different locations were merged to produce a point cloud. The GIF consists of 7 different screen-shots of the point-cloud. While there are still occlusions, many have been filled. For example, notice that you can see both above and below the table. The original 32-bit software that we use to turn pictures into 3D models is almost 5 years old, and it runs on 32-bit Windows XP. The old software often crashes when processing high resolution images because the 2GB memory limit isn't enough to process the gigabytes of data that our scanner can quickly produce. Today's scan was made on a computer running 64-bit Windows 7, and we are currently replacing the old 32-bits software with more advanced 64-bit code. The new software runs much faster in 64-bit mode because it can keep temporary files in RAM instead of writing them to and reading them from a slow disk. Even using a Solid State Drive (SSD) wastes minutes of unnecessary processing. COMING UP: Much better scans processed by SketchUp & posted into Google Earth.

Web Promotion with Google Earth

June 21st, 2010 Comments off

Four buildings that we have recently uploaded

We can now create 3D buildings and place them into Google Earth. The results can be viewed with a normal web browser, and we are exploring how to take advantage of this new low cost form of web promotion. Creating 3D models for Google Earth is a useful capability that we intend to continue refining, and we will begin offering the service of modeling local buildings and placing them into Google Earth. Click here to go to Purcellville Virginia and see one of our 3D model on Google Maps. Use the left, right, and center mouse buttons for navigation. Here is an overview of how to put images onto Google Earth. The program Google SketchUp can be used to create photorealistic 3D models of real buildings. Once a model is built it can be uploaded to Google for possible placement into Google Earth. A model is integrated into Google Earth only after a reviewer decides that it satisfies all of Google's acceptance criteria. Our early efforts were rejected for reasons like being too big, being too complex, or for exhibiting "Z-fighting." At times we have experienced delays of over four weeks during the review process, but after nearly three months of effort we have learned how to efficiently make models that Google will accept and place into Google Earth. While creating 3D content for Google Earth is interesting, our main objective is to build a practical 3D-360 photorealistic scanner. Prototype-4E is in the final stages of assembly, and this July we plan to begin using it to create photorealistic interiors for our 3D models. When the results are good enough we plan to use SketchUp and Google Earth to demonstrate the ability to create models that you can walk around and also into. Once inside you will see detailed photorealistic interiors that are too complex to model with most traditional techniques.

Google Sketchup Basecamp

June 14th, 2008 Comments off
From June 11 to 13 Google hosted a 3-day training called SketchUp Basecamp. About 400 people from all over the world all gathered to learn about the 3D visualization techniques of SketchUp and how to integrate the 3D models into Google Earth. We spent most of our time on this patio and in the buildings that you see. Inspired by Google's global perspective, I decided to make a Google-centric version of a "Google Earth." I stiched 18 images together to make a spherical panorama, and then warped the image to form a globe. This is a first draft, and I plan to post a better HDR version without the tripod and shadow once I get back home. The stitching errors have been removed, and HDR & tone mapping have improved the details. There will probably be a V6 with a few more tweaks. A little more sky would be nice, and there are some HDR artifacts in the lower left. 54 shot panoramic HDR. 3 sets of 18: -2, 00, +2

Feb 2007 Prototype 3.3

February 10th, 2007 Comments off
This hodgepodge of cameras, epoxy, and even duct tape was was used to develop 3D scanning software. After the research (late 2007) it was dissasembled and 7 of the 8 Canon 5Ds (I kept one =:-) were sold on E-bay. A much improved Prototype 4B with 10 custom cameras and lenses will allow a new phase of development in early 2009.

Gestation Prototype 3.2

January 27th, 2007 Comments off
Since 2003 I've been refining the patented 3D-360: an omnidirectional stereoscopic camera system. In this 2007 picture, prototype 3.2 is being upgraded to Proto-3.3. Currently (December 2008) a much-improved Proto-4B is being built with an ETA of April 2009.
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