This work addresses the problem of human motion analysis in video sequences of a scene observed by a single fixed camera with high perspective effect. The goal of this work is to make a 2D-Model (made of Shape and Stick figure) viewpoint-insensitive and preprocess the input image for removing the perspective effect. We focus our methodology on using the 3D principal directions of man-made envir...

In this paper we describe a model-based objects recognition system which is par t of an image interpretation system intended to assist autonomous vehtcles navigation. The system is intended to operate in manmade environments. Behavior-based navigation of autonomous vehicles involves the recognition of navagable areas and the potential obstacles. The recognition system integrates color, shape an...

Virtual geographic environments (VGE) are environments pertaining to the relationship between post-humans and 3-D virtual worlds. Post-humans are defined as a combination of humans in the real world with 3-D avatars in 3-D virtual worlds. Five types of space, namely Internet space, data space, 3-D graphical space, personal perceptual and cognitive space, and social space are used to explore the...

In this paper, we address two challenging issues underlying spatial cognitive simulation using software agents immersed in Virtual Geographic Environments (VGE). First, the way to describe virtual VGE models using accurate spatial decomposition approaches structured using graph theory techniques. Second, the use of graph abstraction techniques to realistically support advanced navigation and pa...

Adaptivity has proven successful in reducing navigation and comprehension problems in hypermedia documents. Authoring of adaptive hypermedia documents and especially of the adaptivity in these documents has been problematic or at least labour intensive throughout AH history. This paper shows how the integration of a CMS with an adaptive framework greatly simplifies the inclusion of personalizat...

Man made indoors and outdoors environments posses a lot of regularities which can be efficiently exploited in a model acquisition by means of visual sensing. We are interested in these modelling issues in the context of navigation and exploration of mobile robots equipped with visual sensing and their interaction with humans. The presented techniques exploit the observations that in man made en...

This research aims to examine the opinions of Turkish higher education students who receive distance compulsorily due COVID-19 pandemic about learning environments. The data were collected through Distance Education Learning Environments Scale-Turkish Version (DELES-TR) from 3,025 in 75 different departments at 66 universities. study is designed within descriptive survey method. analyzed using ...

Resources and services are accessible in pervasive computing environments from anywhere and at any time. Also, due to ever-changing nature of such environments, the identity of users is unknown. However, users must be able to access the required resources based on their contexts. These and other similar complexities necessitate dynamic and context-aware access control models for such environmen...

Virtual geographic environments (VGE) are environments pertaining to the relationship between post-humans and 3-D virtual worlds. Post-humans are defined as a combination of humans in the real world with 3-D avatars in 3-D virtual worlds. VGE can be a platform for the public participation in spatial data analyses, in model computation and simulation, and in environmental planning and decision m...