Mika Hakkarainen

Augmented assembly using a mobile phone

We present a mobile phone based augmented reality (AR) assembly system that enable users to view complex models on their mobile phones. It is based on a client-server architecture, where complex model information is located on a PC, and a mobile phone with the camera is used as a thin client access device to this information. With this system users are able to see an AR view that provides step by step guidance for a real world assembly task. We also present results from a pilot user study evaluating the system, showing that people felt the interface was intuitive and very helpful in supporting the assembly task.

Integration of Design and Assembly Using Augmented Reality

This paper presents a methodology and a system for augmented reality aided assembly work. We concentrate in particular on the requirements on information processing and data flow for implementing augmented assembly systems in real life production environments. A pilot case with an augmented assembly task at the Finnish tractor company Valtra is described.

SymBall: camera driven table tennis for mobile phones

We present a table tennis game implemented for Symbian OS Series 60 mobile phones, using the phones integrated camera as the main game controller. The game demonstrates how the integrated cameras are already usable for interaction on mobile phones, with real time performance. Data communication between the phones is handled using Bluetooth, but the implementation would allow for using slower radio links too.

Demonstration of assembly work using augmented reality

In this paper, we describe the demonstration system in which a wooden 3D puzzle is assembled using an augmented reality system. The 3D puzzle emulated a simplified assembly task in a factory. We use the 3D puzzle as a means to study how to implement an augmented assembly system to a real setting in a factory and explore the advantages and disadvantages of augmented reality techniques. With this demonstration system we also test, demonstrate and evaluate different input modalities for augmented assembly setup. Furthermore, the demonstration system helps us better interact with industry and get invaluable feedback.

Augmented reality with large 3D models on a PDA: implementation, performance and use experiences

We have implemented a client/server system for running augmented reality applications on a PDA device. The system incorporates various data compression methods to make it run as fast as possible on a wide range of communication networks, from mobile phone links to WLAN, We provide a detailed description of various implementation issues, data compression optimisations, and performance analysis of the system, Usability of the system is evaluated in a demanding architectural application, with a large virtual building rendered in an outdoors location.

Multimodal User Interface for Augmented Assembly

In this paper, a multimodal system for augmented reality aided assembly work is designed and implemented. The multimodal interface allows for speech and gestural input. The system emulates a simplified assembly task in a factory. A 3D puzzle is used to study how to implement the augmented assembly system to a real setting in a factory. The system is used as a demonstrator and as a test-bed to evaluate different input modalities for augmented assembly setups. Preliminary system evaluation results are presented, the user experience is discussed, and some directions for future work are given.

Mobile Mixed Reality System for Architectural and Construction Site Visualization

The Architecture, Engineering and Construction (AEC) sector is widely recognized as one of the most promising application fields for Augmented Reality (AR). Building Information Models (BIM) and in particular the Industry Foundation Classes (IFC) data format are another main technology driver increasingly used for data sharing and communication purposes in the AEC sector (Koo & Fischer 2000). For example, the Finnish state owned facility management company Senate Properties demands use of IFC compatible software and BIM in all their projects (Senate 2007).

User Experience and User Acceptance of an Augmented Reality Based Knowledge-Sharing Solution in Industrial Maintenance Work

In industrial service business, maintenance processes can be challenging due to their complexity and knowledge intensiveness. The goal of this study was to evaluate the user experience and user acceptance of an augmented reality (AR) based, knowledge-sharing system, in industrial maintenance. An augmented reality system was evaluated in a focus group and a field study. The results indicate that the user experience was positive and the AR system was well accepted. The participants felt that the AR system was useful for their work and it supported information and knowledge sharing. The social media features for adding and sharing one’s own comments, notes and pictures were seen as very useful. However, some concerns regarding the quality and accuracy of the information content were raised. This study provides insights into AR-based knowledge sharing in industrial maintenance; however, the results can also be utilized in other areas, such as manufacturing.