Localization has been considered as an important precondition for the location-dependent applications such as mobile tracking and navigation.To obtain specific location information, we usually make use of Global Positioning System(GPS), which is the most common platform to acquire localization information in outdoor environments. When targets are in indoor environment, however, the GPS signal i...

In this paper we present an approach to indoor classification that presupposes a certain amount of prior information in terms of statistical information about possible interdependencies among objects and locations. A preselective perception process (that here is only hinted), using a database of textures, and built using the energy value computed with a tree-structured wavelet transform, select...

This thesis examines and implements some state-of-the-art methods for human face recognition. In order to examine all aspects of the face recognition task at a generic level, we have divided the task into three consecutive steps: 1) Skin color detection (for identifying regions with skin-colored), 2) Face detection (no identification) and 3) Face recognition (for identifying which face is detec...

This paper presents an approach to tracking human motion in a sequence of monocular images. The process consists of detecting motion, segmenting moving subjects by recovering the background and, nally, tracking the subject of interest. The usual assumptions of small image motion, a xed viewing system and constant velocity are systematically relaxed. Two cases are studied: 1) a viewing system wi...

BACKGROUND The development of asthma seems to be influenced by the adoption of a Western lifestyle. A study was undertaken to assess the importance of indoor environmental factors in Nepal where the lifestyle and home environment differ from that in the West. METHODS The home environment of 121 schoolchildren with asthma and 126 controls aged 11-17 years was studied. The homes of all particip...

In this paper, we propose ARPushPush, a novel augmented reality game for indoor environment, which uses vision-based tracking and user’s hand gestures. The systems using trackers are too expensive and the calibration between a camera and a tracker, which is indispensable for vision-based interaction, is not easy. The proposed system only uses two cameras for tracking markers and augmenting virt...

Industrial hygienists (IHs) are called upon to investigate exposures to mold in indoor environments, both residential and commercial. Because exposure standards for molds or mycotoxins do not exist, it is important for the industrial hygienist to have a broad knowledge of the potential for exposure and health effects associated with mold in the indoor environment. This review focuses on the tox...

In this study, we investigate subjective preferences regarding floor plans and schematic maps in the use of a map in an indoor environment. To achieve this, we performed a qualitative experiment with a random user sample; the survey was carried out remotely. The survey was conducted in Portuguese and English, and users were asked to answer questions, using two different maps:a floor plan and a ...

In the area of Wireless Local Area Network (WLAN) based indoor localization, the k-nearest neighbors (KNN) fusion clustering algorithm has been studied extensively. But the number of the clustering and the value of K is set manually and fixed, so it can’t adapt to the environment changes. Besides, the algorithm localization with a single Received Signal Strength (RSS), and ignored other deeper ...