Hristina Hristova

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Transferring features, such as light and colors, between input and reference images is the main objective of color transfer methods. Current state-of-the-art methods focus mainly on the complete transfer of the light and color distributions. However, they do not successfully grasp specific light and color variations in image styles. In this paper, we(More)
In this paper, we propose a novel method for creating HDR images from only two images—flash and non-flash images. Our method consists of two main steps, namely brightness gamma correction and bi-local chromatic adaptation transform (CAT). The brightness gamma correction performs series of increases and decreases of the non-flash brightness and yields(More)
Transient growth due to non-normality is investigated for the Taylor-Couette problem with counterrotating cylinders as a function of aspect ratio η and Reynolds number Re. For all Re ≤ 500, transient growth is enhanced by curvature, i.e. is greater for η < 1 than for η = 1, the plane Couette limit. For fixed Re < 130 it is found that the greatest transient(More)
Ozone is one of the main air pollutants with harmful influence over human health. Therefore, predicting the ozone concentration and informing the population when the air quality standards have been exceeded is an important task. In this paper, firstand high-order Gaussian process models for 1-hour ahead prediction of ozone concentration in the air of(More)
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