This paper proposes a modified simple but efficient calculation schema for 2D-Haar wavelet transformation in image compression. The proposed work is aimed at developing computationally efficient and effective algorithms for lossy image compression using wavelet techniques. The work is particularly targeted towards wavelet image compression using Haar Transformation with an idea to minimize the ...

Model transformation languages are crucial for the success of Model-Driven Engineering (MDE), being comparable to the importance of compilers for high-level programming languages. The support of large transformation scenarios, however, is still in its infancy since the development of transformations currently takes place on a low-level of abstraction, lacking appropriate reuse mechanisms. We pr...

Building high-quality transformations that can be used in real projects is complex and time-consuming. For this reason, the ability to reuse existing transformations in different, unforeseen scenarios is very valuable. However, there is scarce tool support for this task. This paper presents bentō, a tool which supports the development and execution of reusable transformation components. In bent...

Model Transformation is the key aspect of Model Driven Engineering (MDE), a model-centric software development approach aiming at improving the quality and productivity of software development processes. This paper presents a metamodel based model transformation framework, which is based on a formal modeling notation – Z-based Object-Oriented Modeling notation (ZOOM). It includes a set of suppo...

Embedded systems and industrial informatics represent two areas with significant research results of quite high added value. Transformation of such results into innovative products and services increases competitiveness and represents, through the enhancement of the citizens’ quality of life, a pay back to the society of research funds. This transformation has not been always straightforward. L...

In this document, a brief overview of my doctoral research is presented. In model-driven engineering (MDE), most problems are solved using model transformation. An efficient process to solving these problems is to apply reusable patterns while solving them. Finding reusable design patterns to specific subsets of problems helps to decrease the time and cost needed to solve them. My doctoral rese...

As demand for advanced photographic applications on hand-held devices grows, these electronics require the capture of high quality depth. However, under low-light conditions, most devices still suffer from low imaging quality and inaccurate depth acquisition. To address the problem, we present a robust depth estimation method from a short burst shot with varied intensity (i.e., Auto Bracketing)...

This paper describes a case study for the ninth Transformation Tool Contest (TTC’16)1. The case is aimed at the production of high-quality designs for object-oriented systems and presents the problem of finding a good class diagram for a given set of methods and attributes with functional and data relationships among them. In order to obtain such a class diagram, dedicated quality metrics that ...

Anatase-to-rutile phase transformation was studied in milled and unmilled samples. Ball milling was carried out in two types of ball mills, planetary and tumbler, with a ball-to-powder ratio of 40:1 over 2-48 hours. First, the unmilled samples were heated in the furnace at various temperatures for different periods of time. The results revealed that the anatase-to-rutile transformation comple...