Dissertation > Excellent graduate degree dissertation topics show

Content-Based Image Retrieval Using Wavelet

Author: RenLiBin
Tutor: XuQuanSheng
School: Shenyang University of Technology
Course: Applied Computer Technology
Keywords: Wavelet Analysis Content-based Image Retrieval Wavelet Modulus Maximum Invariant Moment Similarity Shape-Based
CLC: TP391.3
Type: Master's thesis
Year: 2003
Downloads: 222
Quote: 1
Read: Download Dissertation

Abstract


CBIR(Content-Based Image Retrieval) which becoming more and more important technique in large image database organization and management is the combine of the image retrieval and traditional multimedia information retrieval. It approximately can be divided into many aspect, shape-based retrieval, color-based retrieval, texture-based retrieval, and so on.Wavelet analysis is the widely used time-frequency tool. The wavelet coefficient which produced by wavelet transform can best display part character of the image. This article researched the usage of the Wavelet Analysis in computer image processing area, Image -Resuming, Image-Enhancing, Image-Dividing, Image-matching, Image-reconstruction, Image Retrieval, etc. Especially, this article pay more attention to application of the wavelet analysis used in the Shape-Based Image Retrieval.Shape is the important feature of object in image and shaped-based image retrieval can improve the accuracy and efficiency of image retrieval. In the Shape-based Image Retrieval, transforming the image with wavelet modulus maximum to get multi-scale edge images, then employs a set of seven invariant moments to extract the features of image, which can effectively resolve the variance with respect to translation, scaling, and rotation. Although the image’s modulus maximums have been greatly compressed, but they still contain the redundant data, which is the information used in lower-scale modulus images has been used in higher-scale modulus images. To this question, this article put forward a improving algorithm. The sticking point is when getting the wavelet modulus maximum, setting a limit value, only those larger than the limit value can be recorded, and the limit value is dynamic. So the remaining wavelet modulus maximum can best display the important characters of the image. After compute the seven invariant moments through using the wavelet modulus maximum of the image, Similarity is given by the Euclidean distance between two images’ normalized moment vectors. At last, the algorithm is also tested with medical CT images in a database; the experimental results formulate the verity the effectiveness of the algorithm.

Related Dissertations

  1. Research on Testing and Analyzing Technology for Time Parameter of Aerospace Relay,TM58
  2. The Research and Implemention of Image Retrieval Based on User Interested Feature,TP391.41
  3. Syntactic Features Based Pronoun Resolution,TP391.1
  4. Research of Multiple Emails Automatic Summarization,TP391.1
  5. Application of Q-Learning in the Content-Based Image Retrieval Technology,TP391.41
  6. Research and Implementation on Content-Based Clothing Image Retrieval,TP391.41
  7. The Discovery of User Concept Region Based on Multiple Instance Learning,TP391.41
  8. Research of IRC Botnet Detection Based on Behavior,TP393.08
  9. Study of Event Related Potentials Based on Chinese Auditory Cognition,R318.0
  10. Research on Auto-Evaluation Method of Programming Based on Similarity,TP312.1
  11. Comprehensive Evaluation of Flue-cured Tobacco Quality in Pingdingshan and Comparative Analysis with American Tobacco,S572
  12. The Impact of Tourism on Typical Vegetation in Luya Mountain Nature Reserve, Shanxi Province,S759.9
  13. Ontology -based Semantic Web service matching and composition method,TP393.09
  14. WordNet and the \,G254
  15. Research of Shape Based Image Retrieval in Han Dynasty Stone,TP391.41
  16. Research Implementation of Crack Detection Method Based on Its Acoustic Property,TP274
  17. The Study of Palmprint Image Identification Based on Wavelet Analysis,TP391.41
  18. Study of GPS Data De-noising Method Based on Wavelet and Kalman Filtering,P228.4
  19. Research on Streaming Media Detection Methods Against DoS\DDoS Attack Based on Analysis of Self-similarity,TP393.08
  20. On-line Monitoring of Tool Wear for Mass Production,TG71
  21. Finding Web Services Based on Clustering Probabilistic Semantic Approach,TP393.09

CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Retrieval machine
© 2012 www.DissertationTopic.Net  Mobile