Search Results - P. G. Parfenov

The images built on the basis of rectangular and hexagonal lattices are discussed in the article. For images on a rectangular lattice a formula is proposed, which gives approximate values of the components of a characteristic set of coefficients when turning at an arbitrary angle by the method of th...

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The concepts associated with the calculation of Euler's characteristics of images constructed on the basis of hexagonal lattices are considered. The necessary conditions for a sixteen-dimensional vector with non-negative integer components to be a characteristic set of some image are obtained.

In works analog of Eiler characteristics for halftone images introduce by the instrumentality of integral expression. Deduced theorem allows to calculate this characteristic by summation of some function defined on halftone fragments of size 2*2. Example and computer model mentioned show that forego...

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In the paper is formulated series of functions in a set of pairs of black-and-white digital images. Series of functions are either distance or distance analogue. This functions allows, on the one hand, to solve a problem of discerning images, and on the other hand, to measure similarity. Application...

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Aim. To analyze clinical and anamnestic factors associated with the risk of acute decompensated heart failure (ADHF) in patients with an implanted cardioverter-defibrillator (ICD) with the development of a prognostic model based on the Kuzbass registry of patients with ICD.Material and methods. Pros...

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Aim. To perform external validation of a multivariate model for predicting the risk of death in patients with an implantable cardioverter – defibrillator (ICD) in an independent sample. Materials and methods. The group for model development included 260 patients from the Implantable Cardioverter – D...

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Aim. To study the clinical and anamnestic features of patients followed up in the Center for Chronic Heart Failure at the Regional Vascular Center according to the data of the corresponding register.Materials and methods. The study included data of 802 patients included in the Kuzbass Register of Pa...

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Background. Orthotopic heart transplantation (OHT) is the gold standard treatment for individuals with endstage heart failure (HF), providing the best survival and quality of life. In Russia, the number of OHT procedures and transplantation of other organs have significantly increased in recent year...

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