نتایج جستجو برای: multiple building diffractions
تعداد نتایج: 959959 فیلتر نتایج به سال:
Abstract 3D tomographic phase retrieval under the Born approximation for discrete objects supported on a $n\times n\times n$ grid is analyzed. It proved that $n$ projections are sufficient and necessary unique determination by computed tomography (CT) with full projected field measurements $n+1$ coded diffraction patterns determination, up to global factor, in retrieval. Hence nearly, if not ex...
An algorithm is proposed for solving the fundamental equations of the wavefield for multiple-wave dynamical X-ray diffraction with grazing incidence and scattering geometry. The algorithm is developed based on the representation of the electric fields and wavevectors in a single Cartesian coordinate system with one of the axes in the direction normal to the crystal surface. With this representa...
salt crystallization is one of the most important weathering agents and may limit the durability of building stones. salt crystallization induces stresses inside the pores of stones. consequently, stone durability is closely related to its physical properties and strength. the purpose of this study was to propose a statistical model for estimating stone durability against salt crystallization c...
This paper examines the usability of Blender and 3D Studio Max for a first-time user. Blender and 3D Studio Max are 3-dimensional (3-D) object modeling programs that are frequently used for modeling game objects. Both tools provide a graphical interface for model creation. Most game developers prefer a visual approach to design, because building graphics using a programming language and a graph...
freeze-thaw is one of the most powerful weathering agents that may cause a rapid change in the initial engineering properties of stones, and limit their durability. freeze-thaw induces stress over the pores’ surface of stones. consequently, stone durability is closely related to its engineering and physical properties. the purpose of this study is estimating the engineering properties of deteri...
Building extraction in urban areas is one of the difficult problems in image understanding and photogrammetry. Building delineations are needed in cartographic analysis, urban area planning, and visualization. Although one pair of images is adequate to find the 3D position of two visibly corresponding image features it is not sufficient to extract the entire building due to hidden features that...
We describe the first single microphone sound localization system and its inspiration from theories of human monaural sound localization. Reflections and diffractions caused by the external ear (pinna) allow humans to estimate sound source elevations using only one ear. Our single microphone localization model relies on a specially shaped reflecting structure that serves the role of the pinna. ...
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