by Francois Chasseur

Who would have thought that 3D scanning and printing could have a therapeutic effect? We recently discovered that quality per inadvertence.

It’s difficult to see our body changing, because we see it every day in the mirror. Even if the loss or gain of weight is great, it remains tricky to actually see it. Photos are often unrealistic due to light, exposure, camera, how you are posing.But you can’t lie to a 3D camera. For his huge weight loss, Sebastien called the services of VOUSen3D to make 3D-models of himself, which we achieved by building full body scans, using ReconstructMe.

Sebastien

In July 2013, Seb had a bariatric surgery (gastric bypass) and wanted to keep a more explicit memory than photos of his ‘rebirth’ as he says, his ‘refurbishing’, his new life. We met with him one week before his surgery, and every month since. After each scan he prints his new figurine out. You can’t ignore the evolution when they’re all standing in a row. These figurines are helping Sebastien a lot in his ‘psychologic’ healing: he can touch and see his progressive departure from obesity. He really knows where he’s coming from, where he’s going. When he’s looking at himself in the mirror, he doesn’t see an obese man anymore. He sees a healthier, more attractive man, with great self-esteem – which he is!

We wish you much courage Seb, congrats on the 50 lost Kg – only 30 more to go ;-) Enjoy your new life!

Hello everyone! We are proud to announce the availability of ReconstructMe SDK 2.1. The new version brings a lot of new features and fixes many issues we have encountered of the past months. You can get the latest version here.

The major changes are

Post-process your scan with CSG

We have added a constructive solid geometry (CSG) module that allows you to post-process reconstruction data using manipulative operations. These operations allow you to perform intersections, unions or differences between volume content and other objects. Currently, we support the following primitive objects

• spheres,
• axis aligned boxes,
• and planes.

In the screenshots below you can see CSG operations (union, difference, intersection) applied to a box and a sphere.

All operations are performed on the volume and generate intersection free meshes when extracted. Additionally, we’ve added support for complex meshes. This allows you to easily add stands or cut your reconstruction. We used this feature extensively for automatically generating printable busts such as the example below.

We will go into more detail on how to automatically generate busts in upcoming blog posts next week. In the mean-time check out the CSG example for usage.

Use any RGBD sensor

Another feature we turned our development efforts on is to allow users to share a 3D camera resource with ReconstructMe. This means, that ReconstructMe does not enforce you anymore to use the sensors that ship with it, but you can roll out your own sensor implementation and provide ReconstructMe only the data it requires for reconstruction (this usually boils down to sensor intrinsics, a depth map and optionally an color image).

Using an external sensor allows you to use yet unsupported sensors in ReconstructMe. You might want to have a look at the external sensor example for details.

Browse the volume directly

Until now ReconstructMe SDK did not provide any means of directly navigating through reconstruction volume content. Users always were forced to explicitly generate a surface from the volume andsurface afterwards. This has now changed thanks due to the volume viewer. It pretty much boils down to placing the following lines in your code

reme_viewer_t viewer;
reme_viewer_create_volume(ctx, volume, sensor, "My volume viewer", &viewer);
reme_viewer_wait(c, viewer);

Hello everyone! We had a great Long Night of Research last Friday with more than 300 people visiting us at PROFACTOR. And we scanned most of them! More than 180 people agreed to upload their scans to our site. Here’s a good example of what those scans look like.

Over the weekend we uploaded all models to our site and rolled out our very own 3D web-based viewer. The viewer should work with most modern browsers (expect probably Internet Explorer). If you see an error message when clicking the above play button, you probably need to update your internet browser or switch to a different one.

Entire collection

To view all scanned models, click the image below. Note those are rendered 3D scans, not photographs – no manual post-processing applied.

Amazing, isn’t it? Tell us about your favorite scan!

Words on post-processing

As promised, we’d like to mention a couple of things for all the people who want to download and post-process their files. First of all, model files can be downloaded through our 3D viewer. For storage reasons ReconstructMe uses the OpenCTM file format for web downloads. In order to view or post-process the model, you will therefore need a tool that can handle OpenCTM files.

Although there many tools around we recommend to use Meshlab. It runs on all major platforms such as Windows, MacOS and Linux. Meshlab provides conversion between many file-formats and it is free to use.

Some people mentioned that they would like to turn their virtual models into 3D printed busts. You can do this by ordering your 3D print at a 3D printing services. In the recent years many such services have been created. The most famous ones are Shapeways and Sculpteo.

License

Unless otherwise stated, all 3D model files are licensed under CC BY-NC 4.0. This means you can share or adapt them as long as you give appropriate credit and don’t use the material for commerical purposes.

We’d like to conclude with another great scan.

by Gerold Huber

In the course of my master thesis in the fields of Robotics and Automation at the Johannes Kepler University in Linz (Austria), I am working at the PROFACTOR (the creators of ReconstructMe) since last summer. We wanted to set up a quadcopter for full autonomous tasks without external markers/sensors/cameras. The main challenge in this set-up is position estimation and tracking position accurately. After some struggling with a 2D flow sensor to determine the position, we decided to use a depth sensor in combination with the ReconstructMe SDK for position tracking.

Therefore, I implemented a mobile version of ReconstructMe. As you can see in the Picture about the system architecture below, a high level board streams the sensor information via WiFi to a groundstation running ReconstructMe. There ReconstructMe is used to build a global model of the sensor data. As a benefit, ReconstructMe provides complete tracking information of the camera to the high level board. The Flight Management Unit (Microcontroller) than uses this Position estimation from ReconstructMe in a raw manner to stabilize the multicopter.

The entire process chain (sensor – data streaming – reconstruction – tracking streaming) takes about 120ms. It turns out, that this mobile version of ReconstructMe is sufficient for control and stabilization of a quadcopter as can be seen in the video below. Note that all cables visible are for power supply purposes.

Hardware used:

• Quadcopter from 3DRobotics (http://3drobotics.com/)
• Flightcontroler PX4 from the Pixhawk Project at ETH Zurich (http://pixhawk.org/)
• Pandaboard ES as a Highlevel board (http://pandaboard.org/)
• PrimeSense 1.09 as a depth Sensor (http://www.primesense.com/)

Software used:

• OpenSource PX4FMU autopilot from ETH Zurich (http://pixhawk.org/)
• OpenSource QGroundControl for data display (http://qgroundcontrol.org/)
• ReconstructMe SDK for position tracking (http://reconstructme.net/)

by Sabine Winkler

We are a group of students from the Upper Austria University of Applied Sciences in Hagenberg (Software Engineering) and have teamed-up with PROFACTOR, the creators of ReconstructMe. For the last two semesters we have been working hard to create a tool that enables you to calculate the perimeter of an object as well as the distance between two points on the surface of the model.

The image below shows a slice through an human head bust and the resulting paths. All measurements are evaluated in real-time.

Measuring using a slicing Plane. All paths with their corresponding perimater are evaluated seperately.

As you can see, it supports the calculation of multiple perimeters when cut with a plane aligned to two of the axes. The tool is able to recognize these perimeters completely independent from each other and highlights them in different colors. Think of it as a tool that can be used to load models from your file system, currently supporting PLY and STL file formats. This works by selecting a file from your computer or by passing a command-line argument.

Additionally, you can put two points anywhere on the surface of the loaded model to calculate the geodesic distance (the distance on the surface) between these points.

Geodesic distance between two selected points and the corresponding path.

This can be especially handy e. g. for an orthopaedic specialists or anyone who wants to take certain measurements in ReconstructMe scans. We would like to thank PROFACTOR for letting us be part of the development process of new features and for providing us with support during this time.

A note from PROFACTOR
We are currently evaluating scenarios of adding this application, or functionality of it, to ReconstructMe and/or ReconstructMe SDK. If you happen to have the need for such a feature, we would love to hear about your needs, so we can design the functionality in best fitting sense.

The ReconstructMe team will once again take part in Austria’s Long Night of Research. If you are interested in experiencing our 3D photo booth or just want to converse with us, then join us on the 4th of April 5-11pm in one of the following locations.

PROFACTOR GmbH
Im Stadtgut A2
4407 Steyr-Gleink
Get directions

FH Technikum Wien
Höchstädtplatz 6
1200 Wien
Get directions

2012 was the first time we showed ReconstructMe at the Long Night of Research in Vienna and Steyr and it was such a great experience:

We had around 300 people visiting and exploring our robotics, nano-tech and chemistry labs. At the ReconstructMe booth we had a lot of fun reconstructing our visitors and enjoyed the in-depth discussions with potential users and developers. What really surprised us was how quickly people learnt to use this new technology to scan their family members. – Christoph Heindl

We are looking forward to meeting you there!

As you may have noticed we’ve reworked our homepage. We’ve re-organized most of its content in a hopefully clean and easy to read form.

Help center
A new help-center, which you can find by clicking Support in the main menu, allows you to browse and search our knowledge database. We intend to extend our knowledge base massively over the coming weeks.

Forums
Besides, we decided to move away from our Google-groups channels and instead integrate forums directly into to our homepage. This allows anyone (even without registration) to converse with other users and the ReconstructMe team.

Product variants
We stripped down our product variants to basically two: a single seat license for users and one for developers. All other inquiries, such as volume and educational licenses, are handled in direct interaction with our sales team.

Technical News
Besides reworking our homepage, we’ve been busy with improving ReconstructMe in specific areas. In the coming weeks we intend to blog about our latest changes, including (but not limited to) new sensors, large scale reconstruction and drones using ReconstructMe for stabilization and reconstruction.

As you know, we presented our ReconstructMe software at the 3D Body Scanning Conference. Christoph hold a keynote on Wednesday in the technical session. A Portable, Low Cost 3 D Body Scanning System. The response was amazing, many questions, many answers. We are on the right way! It motivated us to go further on developing. We met interesting people and he got home with many new ideas.