A. G. Voloboi

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Tone mapping operators are used to compress a large range of pixel luminances into a smaller range, which can be displayed on a monitor screen. In this paper, an effective and easy-to-use tone mapping operator based on the latest ideas developed in this field is presented. The parameter estimation process relies on the sampling method. Special attention is(More)
Algorithms used to generate physically accurate images are usually based on the Monte Carlo methods for the forward and backward ray tracing. These methods are used to numerically solve the light energy transport equation (the rendering equation). Stochastic methods are used because the integration is performed in a high-dimensional space, and the(More)
The use of high dynamic range images as a source of the natural daylight illumination and a background for virtual scenes containing objects with complex optic properties (fabrics, automobile multilayer paints, etc.) is considered. Physically justified algorithms for calculating the luminance of a point, recognition of the sun, generation of shadows, and(More)
A technology for developing Internet applications involving computer graphics is presented. Such applications enable Internet users create physically accurate models of global scene illumination and produce high-quality images; it also allows scene editing. Based on this technology, software for creating active presentations or services accessed via the(More)
Described is a new physically based method for calculating optical properties of textile fabrics accounting for their optical and structural characteristics. An algorithm is suggested for calculating optical properties of fabric fibers that accounts for the interaction of light not only with the surface of fibers but also with their volume. An algorithm for(More)
As the power of modern microprocessors increases, the coherent ray tracing becomes increasingly popular in computer graphics because the use of SIMD instructions considerably speeds up this operation. However, after speeding up ray tracing, it turns out that other algorithms for physically accurate rendering, such as the calculation of illumination or(More)
362 On page 167, the list on lines 15–19 (right column): • many systems of various kinds share common software components (for example, simulation of one or other optical phenomenon); • frequent outputs of new versions; • restricted resources and time should move to lines 27–31 (left column). Erratum to: “Testing of Systems for Illumination Simulation and(More)
Testing technologies for software systems of optical simulation and realistic computer graphics developed at the Keldysh Institute of Applied Mathematics, Russian Academy of Sciences, are described. The complexity of the products developed (which consist of about 500 software components) and the need to produce a large number of versions (from 50 to 70(More)
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