1 resultado para Spatial models
em CaltechTHESIS
Filtro por publicador
- Aberdeen University (2)
- Academic Archive On-line (Stockholm University; Sweden) (2)
- Academic Research Repository at Institute of Developing Economies (10)
- Acceda, el repositorio institucional de la Universidad de Las Palmas de Gran Canaria. España (1)
- AMS Tesi di Dottorato - Alm@DL - Università di Bologna (9)
- AMS Tesi di Laurea - Alm@DL - Università di Bologna (3)
- Aquatic Commons (5)
- ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (2)
- Archimer: Archive de l'Institut francais de recherche pour l'exploitation de la mer (3)
- Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (1)
- Aston University Research Archive (24)
- Avian Conservation and Ecology - Eletronic Cientific Hournal - Écologie et conservation des oiseaux: (2)
- Biblioteca Digital | Sistema Integrado de Documentación | UNCuyo - UNCUYO. UNIVERSIDAD NACIONAL DE CUYO. (1)
- Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (9)
- Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP) (7)
- Bioline International (1)
- BORIS: Bern Open Repository and Information System - Berna - Suiça (23)
- Boston University Digital Common (5)
- Brock University, Canada (2)
- Bulgarian Digital Mathematics Library at IMI-BAS (1)
- CaltechTHESIS (1)
- Cambridge University Engineering Department Publications Database (7)
- CentAUR: Central Archive University of Reading - UK (47)
- Chinese Academy of Sciences Institutional Repositories Grid Portal (8)
- Coffee Science - Universidade Federal de Lavras (1)
- Collection Of Biostatistics Research Archive (8)
- Comissão Econômica para a América Latina e o Caribe (CEPAL) (1)
- CORA - Cork Open Research Archive - University College Cork - Ireland (1)
- CUNY Academic Works (2)
- Dalarna University College Electronic Archive (4)
- Deakin Research Online - Australia (38)
- Digital Archives@Colby (1)
- Digital Commons - Michigan Tech (5)
- Digital Commons @ DU | University of Denver Research (1)
- Digital Commons at Florida International University (12)
- Digital Peer Publishing (1)
- DigitalCommons@The Texas Medical Center (3)
- DigitalCommons@University of Nebraska - Lincoln (8)
- Duke University (6)
- eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (7)
- Greenwich Academic Literature Archive - UK (2)
- Helda - Digital Repository of University of Helsinki (7)
- Indian Institute of Science - Bangalore - Índia (17)
- Institutional Repository of Leibniz University Hannover (1)
- Instituto Politécnico do Porto, Portugal (2)
- Massachusetts Institute of Technology (1)
- Memorial University Research Repository (1)
- National Center for Biotechnology Information - NCBI (2)
- Plymouth Marine Science Electronic Archive (PlyMSEA) (4)
- Publishing Network for Geoscientific & Environmental Data (6)
- QSpace: Queen's University - Canada (2)
- QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (39)
- Queensland University of Technology - ePrints Archive (467)
- Repositório Alice (Acesso Livre à Informação Científica da Embrapa / Repository Open Access to Scientific Information from Embrapa) (2)
- Repositório Científico da Universidade de Évora - Portugal (6)
- Repositório digital da Fundação Getúlio Vargas - FGV (1)
- Repositório Institucional da Universidade de Aveiro - Portugal (1)
- Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (39)
- Repositorio Institucional Universidad de Medellín (1)
- Repositorio Institucional Universidad EAFIT - Medelin - Colombia (1)
- RUN (Repositório da Universidade Nova de Lisboa) - FCT (Faculdade de Cienecias e Technologia), Universidade Nova de Lisboa (UNL), Portugal (2)
- SAPIENTIA - Universidade do Algarve - Portugal (2)
- Scielo España (1)
- Universidad de Alicante (2)
- Universidad del Rosario, Colombia (1)
- Universidad Politécnica de Madrid (13)
- Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP) (3)
- Universidade Federal do Pará (1)
- Universita di Parma (1)
- Universitat de Girona, Spain (2)
- Université de Lausanne, Switzerland (3)
- Université de Montréal, Canada (5)
- University of Canberra Research Repository - Australia (1)
- University of Connecticut - USA (2)
- University of Queensland eSpace - Australia (18)
- University of Washington (4)
- WestminsterResearch - UK (1)
Resumo:
This thesis is concerned with spatial filtering. What is its utility in tone reproduction? Does it exist in vision, and if so, what constraints does it impose on the nervous system?
Tone reproduction is just the art and science of taking a picture and then displaying it. The sensors available to capture an image have a greater dynamic range than the media that may be used to display it. Conventionally, spatial filtering is used to boost contrast; it ameliorates the loss of contrast that results when the sensor signal range is scaled down to fit the display range. In this thesis, a type of nonlinear spatial filtering is discussed that results in direct range reduction without range scaling. This filtering process is instantiated in a real-time image processor built using analog CMOS VLSI.
Spatial filtering must be applied with care in both artificial and natural vision systems. It is argued that the nervous system does not simply filter linearly across an image. Rather, the way that we see things implies that the nervous system filters nonlinearly. Further, many models for color vision include a high-pass filtering step in which the DC information is lost. A real-time study of filtering in color space leads to the conclusion that the nervous system is not that simple, and that it maintains DC information by referencing to white.