A common feature of many approaches to modeling sensory statistics is an emphasis on capturing the "average." From early representations in the brain, to highly abstracted class categories in machine learnin...
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ISBN:
(数字)9783031018176
ISBN:
(纸本)9783031006890
A common feature of many approaches to modeling sensory statistics is an emphasis on capturing the "average." From early representations in the brain, to highly abstracted class categories in machine learning for classification tasks, central-tendency models based on the Gaussian distribution are a seemingly natural and obvious choice for modeling sensory data. However, insights from neuroscience, psychology, and computervision suggest an alternate strategy: preferentially focusing representational resources on the extremes of the distribution of sensory inputs. The notion of treating extrema near a decision boundary as features is not necessarily new, but a comprehensive statistical theory of recognition based on extrema is only now just emerging in the computervision literature. This book begins by introducing the statistical Extreme Value Theory (EVT) for visual recognition. In contrast to central-tendency modeling, it is hypothesized that distributions near decision boundaries form a more powerful model for recognition tasks by focusing coding resources on data that are arguably the most diagnostic features. EVT has several important properties: strong statistical grounding, better modeling accuracy near decision boundaries than Gaussian modeling, the ability to model asymmetric decision boundaries, and accurate prediction of the probability of an event beyond our experience. The second part of the book uses the theory to describe a new class of machine learning algorithms for decision making that are a measurable advance beyond the state-of-the-art. This includes methods for post-recognition score analysis, information fusion, multi-attribute spaces, and calibration of supervised machine learning algorithms.
mental ray is the leading rendering engine for generating photorealistic images, built into many 3D graphics applications. This book, written by the mental ray software project leader, gives a general introduction int...
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ISBN:
(数字)9783709136973
mental ray is the leading rendering engine for generating photorealistic images, built into many 3D graphics applications. This book, written by the mental ray software project leader, gives a general introduction into rendering with mental ray, as well as step-by-step recipes for creating advanced effects, and tips and tricks for professional users. A comprehensive definition of mental ray’s scene description language and the standard shader libraries are included and used as the basis for all examples.
Biological visual systems employ massively parallel processing to perform real-world visual tasks in real time. A key to this remarkable performance seems to be that biological systems construct representations of ...
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ISBN:
(数字)9781461527923
ISBN:
(纸本)9780792394020;9781461362074
Biological visual systems employ massively parallel processing to perform real-world visual tasks in real time. A key to this remarkable performance seems to be that biological systems construct representations of their visual image data at multiple scales.;describes a multiscale, or `pyramid', approach to vision, including its theoretical foundations, a set of pyramid-based modules for imageprocessing, object detection, texture discrimination, contour detection and processing, feature detection and description, and motion detection and tracking. It also shows how these modules can be implemented very efficiently on hypercube-connected processor networks.;is intended for both students of vision and vision system designers; it provides a general approach to vision systems design as well as a set of robust, efficient vision modules.
The 15 full papers presented were carefully reviewed and selected from 17 submissions. The papers are organized in the following topical sections: image Denoising¸ image Registration and Matching, image Classific...
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ISBN:
(数字)9783030005009
ISBN:
(纸本)9783030004996
The 15 full papers presented were carefully reviewed and selected from 17 submissions. The papers are organized in the following topical sections: image Denoising¸ image Registration and Matching, image Classification and Detection, Brain image Analysis, and Retinal image Analysis.
This book constitutes the thoroughly refereed post-conference proceedings of the 10th International Workshop on Digital-forensics and Watermarking (IWDW 2011) held in Atlantic City, NJ, USA, during October 23-26, 2011...
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ISBN:
(数字)9783642322051
ISBN:
(纸本)9783642322044
This book constitutes the thoroughly refereed post-conference proceedings of the 10th International Workshop on Digital-forensics and Watermarking (IWDW 2011) held in Atlantic City, NJ, USA, during October 23-26, 2011. The 37 revised full papers presented were carefully selected from 59 submissions. Conference papers are organized in 6 technical sessions, covering the topics of steganography and steganalysis, watermarking, visual cryptography, forensics, anti-forensics, fingerprinting, privacy and security.
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