3 research outputs found

    ΠŸΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ GPU-вычислСний для построСния ΠΈ Π²ΠΈΠ·ΡƒΠ°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ Π²Π΅ΠΊΡΠ΅Π»ΡŒΠ½Ρ‹Ρ… Π³Π΅ΠΎΠΌΠΎΠ΄Π΅Π»Π΅ΠΉ

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    ΠŸΠΎΠΊΠ°Π·Π°Π½Ρ‹ возмоТности Ρ€Π΅Π°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ GPU-ускорСния для выполнСния ΠΏΠ°Ρ€Π°Π»Π»Π΅Π»ΡŒΠ½Ρ‹Ρ… вычислСний ΠΏΠΎ воксСлизации повСрхностСй Ρ€Π°Π·Π΄Π΅Π»Π° срСд ΠΈ ΠΎΠ±ΡŠΡ‘ΠΌΠ½Ρ‹Ρ… гСологичСских Ρ‚Π΅Π» с ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ΠΌ Ρ‚Π΅Ρ…Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ программирования CUDA ΠΈ OpenCL. Π’ систСмС Gexoblock ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅Ρ‚ΡΡ Π±ΠΈΠ±Π»ΠΈΠΎΡ‚Π΅ΠΊΠ° NVIDIA ΠΏΠΎ воксСлизации Π½Π° основС ΠΏΠ°Ρ€Π°Π»Π»Π΅Π»ΡŒΠ½Ρ‹Ρ… вычислСний ΠΏΠΎ Ρ‚Π΅Ρ…Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ CUDA gvdb-voxel

    Π Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° web-прилоТСния для ΠΎΠΏΡ‚ΠΈΠΌΠΈΠ·Π°Ρ†ΠΈΠΈ ΠΈ Π²ΠΈΠ·ΡƒΠ°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ Ρ„ΠΎΡ€ΠΌ ΠΊΠ°Ρ€ΡŒΠ΅Ρ€ΠΎΠ² Ρ€ΡƒΠ΄Π½Ρ‹Ρ… мСстороТдСний

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    Π—Π°Π΄Π°Ρ‡Π° поиска ΠΎΠΏΡ‚ΠΈΠΌΠ°Π»ΡŒΠ½Ρ‹Ρ… Π³Ρ€Π°Π½ΠΈΡ† ΠΊΠ°Ρ€ΡŒΠ΅Ρ€ΠΎΠ² Ρ€ΡƒΠ΄Π½Ρ‹Ρ… мСстороТдСний. Анализ ΡΡƒΡ‰Π΅ΡΡ‚Π²ΡƒΡŽΡ‰ΠΈΡ… ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ‚ΠΎΠ² для Ρ€Π΅ΡˆΠ΅Π½ΠΈΡ этой Π·Π°Π΄Π°Ρ‡ΠΈ. Π­Ρ‚Π°ΠΏΡ‹ проСктирования ΠΈ Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ ΠΎΡ€ΠΈΠ³ΠΈΠ½Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ ΠΏΡ€ΠΎΠ³Ρ€Π°ΠΌΠΌΠ½ΠΎΠ³ΠΎ Ρ€Π΅ΡˆΠ΅Π½ΠΈΡ Π½Π° основС web-Ρ‚Π΅Ρ…Π½ΠΎΠ»ΠΎΠ³ΠΈΠΉ для выполнСния ΠΎΠΏΡ‚ΠΈΠΌΠΈΠ·Π°Ρ†ΠΈΠΈ ΠΈ модСлирования ΠΊΠ°Ρ€ΡŒΠ΅Ρ€ΠΎΠ² Ρ€ΡƒΠ΄Π½Ρ‹Ρ… мСстороТдСни

    QuadStack: An Efficient Representation and Direct Rendering of Layered Datasets

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    We introduce QuadStack, a novel algorithm for volumetric data compression and direct rendering. Our algorithm exploits the data redundancy often found in layered datasets which are common in science and engineering fields such as geology, biology, mechanical engineering, medicine, etc. QuadStack first compresses the volumetric data into vertical stacks which are then compressed into a quadtree that identifies and represents the layered structures at the internal nodes. The associated data (color, material, density, etc.) and shape of these layer structures are decoupled and encoded independently, leading to high compression rates (4Γ— to 54Γ— of the original voxel model memory footprint in our experiments). We also introduce an algorithm for value retrieving from the QuadStack representation and we show that the access has logarithmic complexity. Because of the fast access, QuadStack is suitable for efficient data representation and direct rendering. We show that our GPU implementation performs comparably in speed with the state-of-the-art algorithms (18-79 MRays/s in our implementation), while maintaining a significantly smaller memory footprint
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