This paper presents the problems of implementation and adjustment (calibration) of a metrology engine embedded in NXP's EM773 series microcontroller. The metrology engine is used in a smart metering application to collect data about energy utilization and is controlled with the use of metrology engine adjustment (calibration) parameters. The aim of this research is to develop a method which would enable the operators to find and verify the optimum parameters which would ensure the best possible accuracy. Properly adjusted (calibrated) metrology engines can then be used as a base for variety of products used in smart and intelligent environments. This paper focuses on the problems encountered in the development, partial automatisation, implementation and verification of this method.
COBISS.SI-ID: 18658838
This article presents a new method for detecting objects on waters' surfaces using colour elimination based on image erosion with a morphological variable. The proposed object detection method includes definitions of the target's colour space and colour deviation using Euclidean distance. It also introduces a procedure for image erosion using a morphological variable. In order to evaluate the proposed object detection method, the experiments were performed on two different image databases: the MSRA (Microsoft Research Asia) salient object database and a proprietary image database containing pictures of water activities typically encountered near hydro power plants. The experimental results show that the proposed object detection method enables efficient and robust detection of objects on of waters' surfaces, compared to other methods primarily based on the optimisation of image contrast and edge detection.
COBISS.SI-ID: 18627094
This paper evaluates the impact of combined transcoding and packet loss degradation on speech as input for the interactive voice response service (IVR) and proposes a method for classification of user input according to speech quality. Careful optimization of a communication system and all of its segments need to be considered, as the quality of the user’s experience is becoming a more prominent part of the overall acceptance and desirability of modern service. Within our research, emulation environment was developed and the behavior of IVR analyzed under different packet loss and transcoding conditions. A set of frequently-used vocoders was tested on its performance with an automatic speech recognition module under degraded conditions. Further, quality estimation classifier was proposed, based on the Gaussian mixture models to determine best user’s input modality. Various train and test parameters were investigated to provide more detailed insight of input quality estimation for IVR service working under error prone conditions.
COBISS.SI-ID: 18070550
In the present paper, we investigate a group of markers in spoken interaction, commonly termed general extenders (GEs). We compare their usage in different discourse settings within the reference speech corpus of the Slovene language GOS. The results show that there is a high variability of GE form, but that most forms are rarely used. GEs are generally less frequent in public and formal settings, such as classes and radio and television informative broadcasts, and more frequent in private settings. Substantial differences are found not only between the two groups of GEs, adjunctive and disjunctive, but also between particular GE expressions. We argue that mere qualitative analysis of pragmatic expressions such as GEs is not sufficient for reliable conclusions, and that quantitative corpus analysis can provide additional insights into GE functions, especially considering the differences between the two groups of GEs, adjunctives and disjunctives, and between particular GE expressions.
COBISS.SI-ID: 19266838
Fair input/output (or I/O) automata are a state-machine model for specifying and verifying reactive and concurrent systems. For the verification purposes, one is usually interested only in the sequences of interactions fair I/O automata offer to their environment. These sequences are called fair traces. The usual approach to the verification consists in proving fair trace inclusion between fair I/O automata. This paper presents a simple approach to the specification of fair traces and shows how to establish a fair trace inclusion relation for a pair of fair I/O automata by using the temporal logic of actions.
COBISS.SI-ID: 19245846