1: Seeing: Blazing Processing Characteristics1.1 An Infinite Reservoir of Information1.2 Speed 1.3 Illusions1.4 Recognition Evolvement1.5 Basic-Level Categorization1.6 Memory Capacity and Access1.7 Summary2: Category Representation and Recognition Evolvement2.1 Structural Variability Independence2.2 Viewpoint Independence2.3 Representation and Evolvement2.4 Recapitulation2.5 Refining the Primary Engineering Goal3: Neuroscientific Inspiration3.1 Hierarchy and Models3.2 Criticism and Variants3.3 Speed3.4 Alternative ’Codes’3.5 Alternative Shape Recognition3.6 Insight from Cases of Visual Agnosia3 7 Neuronal Level3.8 Recapitulation and Conclusion4: Neuromorphic Tools4.1 The Transistor4.2 A Synaptic Circuit4.3 Dendritic Compartments4.4 An Integrate-and-Fire Neuron4.5 A Silicon Cortex4.6 Fabrication Vagrancies require Simplest Models4.7 Recapitulation5: Insight From Line Drawings Studies5.1 A Representation with Polygons 5.2 A Representation with Polygons and their Context5.3 Recapitulation6: Retina Circuits Signaling and Propagating Contours 6.1 The Input: a Luminance Landscape 6.2 Spatial Analysis in the Real Retina 6.3 The Propagation Map 6.4 Signaling Contours in Gray-Scale Images 6.5 Recapitulation7: The Symmetric-Axis Transform 7.1 The Transform 7.2 Architecture 7.3 Performance 7.4 SAT Variants 7.5 Fast Waves 7.6 Recapitulation8: Motion Detection8.1 Models8.2 Speed Detecting Architectures8.3 Simulation8.4 Biophysical Plausibility8.5 Recapitulation9: Neuromorphic Architectures: Pieces and Proposals 9.1 Integration Perspectives 9.2 Position and Size Invariance 9.3 Architecture for a Template Approach 9.4 Basic-Level Representations 9.5 Recapitulation 10: Shape Recognition with ContourPropagation Fields 10.1 The Idea of the Contour Propagation Field 10.2 Architecture 10.3 Testing 10.4 Discussion 10.5 Learning 10.6 Recapitulation 11: Scene Recognition11.1 Objects in Scenes, Scene Regularity11.2 Representation, Evolvement, Gist11.3 Scene Exploration11.4 Engineering11.5 Recapitulation12: Summary12.1 The Quest for Efficient Representation and Evolvement12.2 Contour Extraction and Grouping12.3 Neuroscientific Inspiration12.4 Neuromorphic Implementation12.5 Future ApproachTerminologyReferences IndexKeywordsAbbreviations
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The reader is presented an approach to the construction of a visual system, which is behaviorally, computationally and neurally motivated. The central goal is to characterize the process of visual categorization and to find a suitable representation format that can successfully deal with the structural variability existent within visual categories. It does not define such representations a priori but attempts to show directions on how to gradually work towards them. The book reviews past and existent theories of visual object and shape recognition in the fields of computer vision, neuroscience and psychology. The entire range of computations is discussed, as for example contour extraction in retinal circuits, orientation determination in cortical networks, position and scale independence of shape, as well as the issue of object and shape representation in a neural substrate. Region-based approaches are discussed and are modeled with wave-propagating networks. It is demonstrated how those networks operate on gray-scale images. A completely novel shape recognition architecture is proposed that can recognize simple shapes under various degraded conditions. It is discussed how such networks can be used for constructing basic-level object representations. It is envisioned how those networks can be implemented using the method of neuromorphic engineering, an analog electronic hardware substrate than can run neural computations in real-time and with little power.
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Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The reader is presented an approach to the construction of a visual system, which is behaviorally, computationally and neurally motivated. The central goal is to characterize the process of visual categorization and to find a suitable representation format that can successfully deal with the structural variability existent within visual categories. It does not define such representations a priori but attempts to show directions on how to gradually work towards them. The book reviews past and existent theories of visual object and shape recognition in the fields of computer vision, neuroscience and psychology. The entire range of computations is discussed, as for example contour extraction in retinal circuits, orientation determination in cortical networks, position and scale independence of shape, as well as the issue of object and shape representation in a neural substrate. Region-based approaches are discussed and are modeled with wave-propagating networks. It is demonstrated how those networks operate on gray-scale images. A completely novel shape recognition architecture is proposed that can recognize simple shapes under various degraded conditions. It is discussed how such networks can be used for constructing basic-level object representations. It is envisioned how those networks can be implemented using the method of neuromorphic engineering, an analog electronic hardware substrate than can run neural computations in real-time and with little power. 152 pp. Englisch. Bestandsnummer des Verkäufers 9781461498490
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Taschenbuch. Zustand: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Arma virumque cano, Trojae qui primus ab oris Italiamfato profugus, Laviniaque venit litora. This is the beginning of Ovid's story about Odysseus leaving Trojae to find his way home. I here tell about my own Odysee-like ex- riences that I have undergone when I attempted to simulate visual recognition. The Odyssee started with a structural description - tempt, then continued with region encoding with wave propagation and may possibly continue with a mixture of several shape descr- tion methods. Although my odyssey is still under its way I have made enough progress to convey the gist of my approach and to compare it to other vision systems. My driving intuition is that visual category representations need to be loose in order to be able to cope with the visual structural va- ability existent within categories and that these loose representations are somehow expressed as neural activity in the nervous system. I - gard such loose representations as the cause for experiencing visual illusions and the cause for many of those effects discovered in att- tional experiments. During my effort to find such loose represen- tions, I have made sometimes unexpected experiences that forced me to continuously rethink my approach and to abandon or turn over some of my initially strongly believed viewpoints.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 152 pp. Englisch. Bestandsnummer des Verkäufers 9781461498490
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