P. Koutlemanis

• Foundation for Research and Technology Hellas

Digital tools exhibit the potential to support the sustainability of traditional crafts through training and presentation applications. This work presents an integrated approach, combining state-of-the-art simulation and visualisation techniques to model mechanical actions characteristic of traditional crafts. This integration promotes a deeper und...

A close-range photogrammetric approach and its implementation using a CNC device and a macro camera are proposed. A tailored image acquisition approach is proposed that is implemented using this device. To increase reconstruction robustness and accuracy, the key point features detected in the acquired images are tracked across multiple views from m...

Featured Application Contactless and high-resolution scanning of planar surfaces find application in several disciplines that involve sensitive or deformable samples, such as the study and conservation of heritage objects, textiles, documents, and paintings. Off-the-shelf solutions come at a high cost. In this work, an approach to contactless, high...

The case of mixed-reality projector-camera systems is considered and, in particular, those which employ hand-held boards as interactive displays. This work focuses upon the accurate, robust, and timely detection and pose estimation of such boards, to achieve high-quality augmentation and interaction. The proposed approach operates a camera in the n...

This paper presents an Ambient Intelligence infrastructure that fuses state-of-the-art technologies and related applications with digital cultural resources to deliver interactive and immersive user encounters through on-site Virtual Exhibitions (VEs) which respond to the demands of ‘new museology’. The practical exploitation of the concept is pres...

The Tourism Office of the city of Heraklion is a truly original facility that provides visitors with novel ways to access information through the use of modern technologies and innovative interactive systems developed by ICS-FORTH. This paper presents the innovative technologies employed at the tourist information office in order to enhance the inf...

Estimating the pose of objects from depth data is a problem of considerable practical importance for many vision applications. This paper presents an approach for accurate and efficient 3D pose estimation from noisy 2.5D depth images obtained from a consumer depth sensor. Initialized with a coarsely accurate pose, the proposed approach applies a hy...

This work regards fingertip contact detection and localization upon planar surfaces, for the purpose of providing interactivity in augmented, interactive displays that are implemented upon these surfaces. The proposed approach differs from the widely employed approach where user hands are observed from above, in that user hands are imaged laterally...

This work regards fingertip contact detection and localization upon planar surfaces to provide interactivity in augmented displays implemented upon these surfaces, by projector-camera systems. In contrast to the widely employed approach where user hands are observed from above, lateral camera placement avails increased sensitivity to touch detectio...

Today, many forms of art are influenced by the emergence of interactive technologies, including the mixing of physical media with digital technology for forming new hybrid works of art and the usage of mobile phones to create art projected on public spaces. Many artists and painters use digital technology to augment their work technically and creat...

Estimating the pose of objects from range data is a problem of considerable practical importance for many vision applications. This paper presents an approach for accurate and efficient 3D pose estimation from 2.5D range images. Initialized with an approximate pose estimate, the proposed approach refines it so that it accurately accounts for an acq...

Pervasive computing environments have permeated current research and practice, unobtrusively augmenting existing environments with digital content. The present work, following a pervasive computing approach, proposes a framework to augment an educational environment, being a typical classroom or any studying environment. In this context, the work p...

A computer vision system that employs an RGBD camera network to track multiple humans is presented. The acquired views are used to volumetrically and photometrically reconstruct and track the humans robustly and in real time. Given the frequent and accurate monitoring of humans in space and time, their locations and walk-through trajectory can be r...

In this paper, a steerable, interactive projection display that has the shape of a disk is presented. Interactivity is provided through sensitivity to the contact of multiple fingertips and is achieved through the use of a RGBD camera. The surface is mounted on two gimbals which, in turn, provide two rotational degrees of freedom. Modulation of sur...

This paper presents an augmented reality environment for students' improved learning, which is based on unobtrusive monitoring of the natural reading and writing process. This environment, named SESIL, is able to perform recognition of book pages and of specific elements of interest within a page, as well as to perceive interaction with actual book...

A method for foreground detection in data acquired by a moving RGBD camera is proposed. The background scene is initially in a reference model. An initial estimation of camera motion is provided by a conventional point cloud registration approach of matched keypoints between the captured scene and the reference model. This initial solution is then...

Augmented Reality environments have shown to be relevant and valuable in many instances of the educational process. Accounting for the advantages and conventional gains of learning through physical books and printed matter in gen-eral, this paper presents an approach towards augmenting both such media. This work has elementary school as a con-text...

In 2010, the Institute of Computer Science of the Foundation for Research and Technology-Hellas (ICS FORTH) and the Archaeological Museum of Thessaloniki (AMTh) collaborated towards the creation of a special exhibition of prototypical interactive systems with subjects drawn from ancient Macedonia, named “Macedonia from fragments to pixels”. The exh...

This paper presents a computer vision system that supports non-instrumented, location-based interaction of multiple users with digital representations of large-scale artifacts. The proposed system is based on a camera network that observes multiple humans in front of a very large display. The acquired views are used to volumetrically reconstruct an...

This paper presents an interactive desk that augments physical books that are placed upon its surface with multimedia content and interactive applications. Such content is dynamically displayed in augmentation to the currently open page of the book, that is, aligned in real-time with its 2D orientation upon the desk. The rendered applications are c...

The theme of this paper is an exhibition of prototypical interactive systems with subjects drawn from ancient Macedonia, named "Macedonia from fragments to pixels". Since 2010, the exhibition is hosted by the Archaeological Museum of Thessaloniki and is open daily to the general public. Up to now, more than 165.000 people have visited it. The exhib...

This paper presents an advergame installation for promoting the brand and products of a food company producing various types of traditional Cretan rusks. The paper first presents some background and related work. Then the requirements set towards creating the game are outlined, followed by concept creation and design decisions taken in order to mee...

A visual user interface providing augmented, multitouch interaction upon a non-instrumented disk that can dynamically rotate in two axes is proposed. While the user manipulates the disk, the system uses a projector to visualize a display upon it. A depth camera is used to estimate the pose of the surface and multiple simultaneous fingertip contacts...

In G. Tortora, S. Levialdi & M. Tucci (Eds.), Proceedings of the International Working Conference on Advanced Visual Interfaces (AVI 2012), Capri Island (Naples), Italy, 21-25 May (802-803). New York: ACM Press.

This paper presents an innovative advergame installation for promoting the brand and products of a company producing Cretan rusks. The paper first presents some background and related work. Then, the requirements set towards creating the game are outlined, followed by concept creation and design decisions taken to meet these requirements, as well a...

A method is proposed that visually estimates the 3D pose and endpoints of a thin cylindrical physical object, such as a wand, a baton, or a stylus, that is manipulated by a user. The method utilizes multiple synchronous images of the object to cover wide spatial ranges, increase accuracy and deal with occlusions. Experiments demonstrate that the me...

Today, augmented reality is evolving towards sophisticated approaches exploiting the opportunities offered by immersive environments and high quality 3D graphics. Such systems can prove to be very useful in the context of education, especially when learning involves reading and writing activities. However, the majority of existing systems relies on...

In this paper, the design and implementation of a hardware/software platform for parallel and distributed multiview vision processing is presented. The platform is focused at supporting the monitoring of human presence in indoor environments. Its architecture is focused at increased throughput through process pipelining as well as at reducing commu...

We present work on exploiting modern graphics hardware towards the real-time production of a textured 3D mesh representation of a scene observed by a multicamera system. The employed computa-tional infrastructure consists of a network of four PC workstations each of which is connected to a pair of cameras. One of the PCs is equipped with a GPU that...

DIAMOUSES is an ongoing research and development project aiming at enabling a wide range of application scenarios for networked music performance. Such scenarios range from geographically distributed music rehearsals to remote music master classes or collaborative sessions for music improvisation and jamming. Clearly, different application scenario...

DIAMOUSES is an on-going research and development project aiming to establish a platform supporting distributed and collaborative music performance. DIAMOUSES is designed to host a variety of application scenarios, including music rehearsal, music improvisation and music education, thus offering a tailorable enterprise-wide solution for organizatio...