3D-Photo – survey with XTion and Skanect

3D-Photo – survey with XTion and Skanect

clip_image002

A previous article reported a first experiment with XTion and Scanect. At that time, 2 years ago, results were average in terms of quality, usage and stability. (see here)

The new 2015 version (1.8) of the software (http://skanect.occipital.com/) brings much more confort and good results.

Prepare

New options help to get a better recording session:

clip_image004

One of the big change is the control on the bounding box. It can be extend to 12x12x12m. For better results, it’s recommanded to set a wider bounding box to capture everything. Problem, by increasing the range, one may loose details. The best is to put the sensor  horizontally before starting to scan.

clip_image006

Record

The recording is much more stable. The acquisition is faster and if it’s still important to have a very regular move, it does not cut as it did before. It’s possible to restart from a given point and carry on scanning. A more brighter situation can be handdled.

clip_image008

Reconstruction

Reconstruction is now pretty fast. Before, it was a real issue when on site, sometimes far from electricity supplies. It took hours to rebuild the model draining the power of the computeur. It’s now almost in real time.

clip_image010

Process

The process part is also improved. New options allow a better control on the model such as removing small components, filling holes and colorizing the mesh.

clip_image012

Share

The sharing options enable to save and export the model. Several qualities are offered. It’s also possible to upload to Sketchfab when enterring the API number.

clip_image014

Other context

The example above perfectly fits to Skanect. It is dark, it has a lot of details, it’s very bumpy. For a room, that’s not exactly the same story.

It’s very important to prepare the scanning path. It’s has to be along an imaginary spline as fluid as possible. A bad path can occur this kind of results :

clip_image016

Sad but funny !

clip_image018

There, the Senser has been put on the table before starting, results are better, despite a lot of specular reflexions and metallic surfaces.

clip_image020

There are a lot of details in this scene, the resolution is not enough to capture everything. It looks a bit melty, but it could be a wonderfull layout to rebuild in 3D.

clip_image022

This is a test for an object.

clip_image024

Much better.

clip_image026

Conclusion

For $129/99€ only, Skanect is a very nice solution for very narrow, dark and unconfortable places to scan. I’ve tried it in caves where I had to crawl to go through very narrow paths, it was there perfect.

I imagine that with a new generation of sensor, it would be even better.

Visualization in Meshlab

clip_image028

The Kitchen

clip_image030

With Unity 5

clip_image032

Laisser un commentaire

Votre adresse de messagerie ne sera pas publiée. Les champs obligatoires sont indiqués avec *

Ce site utilise Akismet pour réduire les indésirables. En savoir plus sur comment les données de vos commentaires sont utilisées.