Image content sensible query distribution in a CBIR-network:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | German |
| Veröffentlicht: |
2012
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| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | 67 Bl. graph. Darst. |
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Datensatz im Suchindex
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| adam_text | Inhaltsverzeichnis
Abbildungsverzeichnis
vii
I.
Einführung 1
1. Einleitung 3
1.1. Motivation................................. 3
1.2. Anforderungen .............................. 4
1.3. Aufbau dieser Arbeit........................... 4
II.
Grundlagen 7
2. Inhaltsbasierte Bildersuche 9
2.1. Überblick................................. 9
2.2. CBIR-System............................... 10
2.3. Merkmale................................. 11
2.3.1. Merkmalsextraktion ....................... 12
2.3.2. Ähnlichkeit............................ 13
2.3.3. Kombination von Merkmalen .................. 15
2.4. Semantische Lücke............................ 16
2.5. CBIR-Netzwerk.............................. 18
3. Merkmale der Java-Bibliothek LIRe 21
III.
Praxis- ICSQuedi 25
4. Systemarchitektur 27
4.1. Modellbildung............................... 27
4.1.1. Übersicht ............................. 27
4.1.2. Voraussetzungen ......................... 29
4.1.3. Annahmen............................. 29
4.2. Semantische Konzepte und Klassen................... 30
4.3. Klassifizierung............................... 31
4.3.1. Support
Vector Machine.....................
32
4.3.2. SVM der
Weka
Machine Learning API
............. 33
4.4. Bestimmung der optimalen Merkmalsgewichtung............ 34
4.4.1. Überblick............................. 34
4.4.2.
Clustering
............................. 36
4.4.3. Relationaler Distanzraum.................... 37
vi
______________________________________________________Inhaltsverzeichnis
4.4.3.1. Prinzip ......................... 38
4.4.3.2. Verallgemeinerung auf Klassen ............ 39
4.4.4. Optimierung............................ 41
4.4.4.1. Das
Fisher
sehe Kriterium............... 41
4.4.4.2. Evolutionärer Algorithmus............... 41
4.5. Berechnung der inhaltsabhängigen Merkmalsgewichtung........ 42
4.6. Implementierung............................. 43
5. Evaluation 47
5.1. Support
Vector Machine
......................... 47
5.2. Merkmalsgewichtungen.......................... 48
5.3. Ergebnisse................................. 50
5.3.1. Eingabebilder aus trainierten Klassen.............. 50
5.3.2. Eingabebilder aus nicht trainierten Klassen........... 51
5.4. Systemtest - zwei CBIR-Netzwerke................... 53
5.4.1. Systemtest - CBIRn auf separaten Bilderdatenbanken..... 53
5.4.2. Systemtest - CBIRn auf gemeinsamer Bilderdatenbank .... 54
IV.
Abschluss 57
6. Zusammenfassung 59
6.1. Diskussion................................. 59
6.2. Ausblick.................................. 61
Literaturverzeichnis 67
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| spelling | Jurgovsky, Johannes Verfasser aut Image content sensible query distribution in a CBIR-network Johannes Jurgovsky 2012 67 Bl. graph. Darst. txt rdacontent n rdamedia nc rdacarrier Passau, Univ., Bachelorarbeit, 2012 (DE-588)4113937-9 Hochschulschrift gnd-content Digitalisierung UB Passau application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025726448&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Jurgovsky, Johannes Image content sensible query distribution in a CBIR-network |
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| title | Image content sensible query distribution in a CBIR-network |
| title_auth | Image content sensible query distribution in a CBIR-network |
| title_exact_search | Image content sensible query distribution in a CBIR-network |
| title_full | Image content sensible query distribution in a CBIR-network Johannes Jurgovsky |
| title_fullStr | Image content sensible query distribution in a CBIR-network Johannes Jurgovsky |
| title_full_unstemmed | Image content sensible query distribution in a CBIR-network Johannes Jurgovsky |
| title_short | Image content sensible query distribution in a CBIR-network |
| title_sort | image content sensible query distribution in a cbir network |
| topic_facet | Hochschulschrift |
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