Jonas Valantinas

Learn More
The contribution of this paper is a new version of the escape time algorithm adapted to synthesize fractal images, identified with attractors of iterated function systems (IFS). The proposed synthesis algorithm is based on the use of shift dynamics, associated with one or another IFS. The novelty of the algorithm is grounded on two factors. Firstly, the(More)
BACKGROUND Nonalcoholic fatty liver disease (NAFLD) is the most common chronic liver disease; there is growing evidence that it is a hepatic manifestation of a metabolic syndrome. This study aimed to assess the prevalence of metabolic risk factors among patients with NAFLD. MATERIAL/METHODS Outpatients with NAFLD were recruited into the study. Family(More)
BACKGROUND The aim of this study was to assess risk factors for HCV acquisition and prevalence of anti-HCV in the general population of Lithuania. MATERIAL/METHODS The study enrolled 1528 randomly selected adults from the 5 biggest cities of Lithuania and its rural regions. Screening for anti-HCV was performed by analysis of peripheral capillary blood(More)
In this paper, a novel scheme for the accelerated analysis of quad-trees in the discrete wavelet spectrum of a digital image is proposed. During the pre-scanning step, the proposed scheme generates objective and specially structured binary codes for the whole set of quad-tree roots (wavelet coefficients) and thereby accumulates facts on the significance of(More)
Fractal image compression is an engaging and worthwhile technology that may be successfully applied to still image coding, especially at high compression ratios. Unfortunately, the large amount of computation needed for the image compression (encoding) stage is a major obstacle that needs to be overcome. In spite of numerous and many-sided attempts to(More)
BACKGROUND AND PURPOSE Contradictory data exist on the association between host interleukin-28B (IL28B) rs12979860 genotype and liver fibrosis in patients with chronic hepatitis C (CHC). This large, international, observational study (NCT01675427/MV25600) investigated relationships between IL28B rs12979860 genotype and liver fibrosis stage in CHC patients.(More)