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7 results for "hash functions"
Implementation and Benchmarking of Perceptual Image Hash Functions By Christoph Zauner
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This thesis proposes a novel benchmarking framework, called Rihamark, for perceptual image hash functions. Subsequently, four different perceptual image hash functions were benchmarked: A discrete... More > Cosine transform based, a Marr-Hildreth operator based, a radial variance based and a block mean value based image hash function. pHash, an open source implementation of various perceptual hash functions, was used to benchmark the first three functions. The latter, the block mean value based image hash function was implemented by the author of this thesis himself.< Less
Implementation and Benchmarking of Perceptual Image Hash Functions By Christoph Zauner
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This thesis proposes a novel benchmarking framework, called Rihamark, for perceptual image hash functions. Subsequently, four different perceptual image hash functions were benchmarked: A discrete... More > Cosine transform based, a Marr-Hildreth operator based, a radial variance based and a block mean value based image hash function. pHash, an open source implementation of various perceptual hash functions, was used to benchmark the first three functions. The latter, the block mean value based image hash function was implemented by the author of this thesis himself.< Less
Hashing in Smalltalk: Theory and Practice By Andres Valloud
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This volume, divided in two parts, provides a strong foundation for hashing, hash functions, and their application in the context of software development. While the programming language used in this... More > book is Smalltalk, the information provided applies to other programming languages as well. The first part develops hashing and hash functions from first principles. The behavior characteristics required of hash functions are examined in detail. A thorough description of how hash functions are constructed follows, complete with a rich survey of existing hash functions. However, existing hash functions are often inappropriate for the task at hand. To address this problem, the second part shows how to build novel hash functions that are both efficient and highly effective for the range of data types that occur in practice. The book includes over 230 exercises. Together with their answers, provided in an appendix, these exercises further develop the material in both familiar and new ways.< Less
Dictionary Data Structures By Martín González Rodríguez
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This guide describes how to implement hash tables, one of the fastest data structure used in Computer Science
Basic Algorithms By Malcolm McLean
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A massive compendium of computer programming algorithms. Everything is explained from the ground up; from basic stacks, queues and lists, floating point arithmetic and maths functions, through to... More > hash tables, red black trees, compression, complex numbers, the GIF and JPEG file formats, 3D graphics, and up to advanced topics such as Hidden Markov models, neural networks, and fuzzy logic.< Less
Basic Algorithms By Malcolm McLean
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A massive compendium of computer programming algorithms. Everything is explained from the ground up; from basic stacks, queues and lists, floating point arithmetic and maths functions, through to... More > hash tables, red black trees, compression, complex numbers, the GIF and JPEG file formats, 3D graphics, and up to advanced topics such as Hidden Markov models, neural networks, and fuzzy logic.< Less
Basic Algorithms By Malcolm McLean
eBook (ePub): $9.25
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A massive compendium of computer programming algorithms. Everything is explained from the ground up; from basic stacks, queues and lists, floating point arithmetic and maths functions, through to... More > hash tables, red black trees, compression, complex numbers, the GIF and JPEG file formats, 3D graphics, and up to advanced topics such as Hidden Markov models, neural networks, and fuzzy logic.< Less