Spatial Augmented Reality

Reality at center of the attention

Augmented reality (AR) is a computer science and human computer interaction field. In AR the digital application is linked to a physical context. It directly contrasts with virtual reality where the physical environment totally vanishes to immerse users.

Why choose Spatial Augmented Reality ?

At RealityTech, we want to make technology invisible and transparent: magical. Since the beginning of computing the programs are limited in screens; we want to use the incredible amount of processing power we have nowadays to make life easier. The duality digital - real world will diminish along the coming years; it should not be at the expense of manual craftmanship and collective activites.

Why is not everywhere yet ?

One reason: it is very difficult. We make these kind of applications easier to create with our hardware that solve a large part of the difficulties. The first problem is to find out what happens to the physical elements: which objects are here and which one are interactive. Then we need to find out the movements and intent of the users. The last problem is to know how and where to project applications.

Inspiration: Computer science for the physical world.

The first application developped by found of RealityTech was an application for physical drawing. At this time (and nowadays) all of the drawing applications were for bitmap drawing (pixel grid) or vectorial drawing (curves and lines) and the result is the same: a digital file. Thus all the digital tools are created for digital content, and physical content creation could not benefit from them. The goals of the programs developped during the PhD works were to develop such tools for physical drawing. The applications are not ported yet to the Natar platform, and the dissertation is available online along with the vidéos: first video, and the construction line video.

Clients Demos & Videos

Video supplement of the CHI 2018 publication by Brock et. al. .

Greek video displaying their use case with blind children.

2018 Demos

Video introduction to RealityTech.

Artificial Neural Network in AR. Project presentation.

Sample assembly guide in AR with projection at scale.

Physical menu selection. Only the colored object activates the menu.

Extended Touch: Finger tracking only (no objects).

Light mapping on a 3D model. The virtual light location is given by the finger.

2018 Demos (click to expand)

2016 Demos

Technological overview at the end of the research lab phase.

Miniature lego home with projection mapping and AR gardening. Showcased at Laval Virtual 2016 in the Start-up Area.

Physics game concept, done by two interns at Inria (2 months internships).

2016 - Technical Videos (click to expand)


Perspective drawing tools for physical drawings. Published as PhD thesis work.

Experiments of a tower defense in Spatial AR. Exhibited at TechFest 2015' at the India Institue of Technology in Mumbai, India.

Experiments of a tower defense in Spatial AR, complete version of the game with bonuses and VS mode.


The top images are captured and reprojected as an animation in the bottom right image. Published as PhD thesis work.

Image analysis with touch interface. Demos at UIST 2012 (Scientific conference) at Boston, MA, USA.

Mix of simple code in Processing and drawing. Published as PhD thesis work.


Manipulation and rendering of 3D objects for physical drawing. First «PapARt» publication. Scientific publication at 3DUI 2012 at Santa Ana (Los Angeles), 2012.


First rendering of perspective-corrected 3D objects.

First implementation of what would become the touch input.