Introduction: one of the minimally invasive methods of treatmenting liver malignancies is Radiofrequency Ablation (RFA) which can be applied to primary or secondary tumors. Nevertheless, the disease recurrence is probable after RFA application partially due to the inadequate capability of temperature monitoring of the target tissue and visualizing the thermal damage. The goal of this work was t...

We prove simple general formulas for expectations of functions a random walk and its running extremum. Under additional conditions, we derive analytical using the inverse $Z$-transform, Fourier/Laplace inversion Wiener-Hopf factorization, discuss efficient numerical methods realization these formulas. As applications, cumulative probability distribution function process maximum price option to ...

The paper examines the Fractional Fourier Transform (FRFT) based technique as a tool for obtaining probability density function and its derivatives, mainly fitting stochastic model with fundamental probabilistic relationships of infinite divisibility. functions are computed, distributional proprieties reviewed Variance-Gamma (VG) model. VG has been increasingly used an alternative to Classical ...

In this paper, a scheme to remove clouds and their shadows from remotely sensed images of Landsat TM over land has been proposed. The scheme uses the image fusion technique to automatically recognize and remove contamination of clouds and their shadows, and integrate complementary information into the composite image from multitemporal images. The cloud regions can be detected on the basis of t...

According to the characteristics of a medical image, this paper presents a multimodality medical image fusion algorithm based on wavelet transform. For the low-frequency coefficients of the medical image, the fusion algorithm adopts the fusion rule of pixel absolute value maximization; for the high-frequency coefficients, the fusion algorithm uses the fusion rule that combines the regional info...

In this paper, we describe an improved method of personal positioning and orientation using image registration between input video frames and panoramic images captured beforehand. In our previous work, we proposed the method of image registration with an a ne transform. However, the a ne transform is generally not capable of image registration between a frame and a panorama. We improved the pre...

Figure 1. Spectral analysis and the Doppler display. The fast Fourier transform (FFT) separates the Doppler signal into its component Doppler-shift frequencies and determines the amplitude at each frequency. Most ultrasound machines calculate Doppler-shifted frequencies over 5 msec increments and convert this to velocity information. These velocities are then displayed in a bin whose brightness...

The transformation of the RGB colour space to a hue, saturation and brightness colour space is essentially a conversion from a rectangular coordinate system to a cylindrical coordinate system. Nevertheless, a bewildering array of such conversions exist. We show that one of the main reasons for this is the dependence of the saturation values on the choice of the brightness function, and suggest ...

This paper presents a principled method calledMusicThumbnailer to transform musical pieces into visual thumbnail images based on acoustic features extracted from their audio signals. These thumbnails can help users immediately guess the musical contents of audio signals without trial listening. This method is consistent in ways that optimize thumbnails according to the characteristics of a targ...