Tim Liao's Honours Study Page

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Research

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Supervisor: Dr Sid Ray
Honours Research Project : Image Segmentation - Hybrid Method Combining Clustering and Region Merging.

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Abstract

A hybrid image segmentation scheme for grey level images is presented. The techniques used in the hybridization are to combine two of the well known image segmentation methods, clustering and region merging. The grey level images are segmented hierarchically. K-means clustering is applied first to the image to find the desired number of clusters in the image, where the number of clusters is automatically detected based on the automatic detection of clusters in colour images by Ray and Turi. The result of the clustering is then passed through region merging for post processing to remove noises or irregularities in images that tend to occur in clustering based segmentation methods.

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Progress : 

10/03/03 Meeting with supervisor - Introduction to Image Segmentation
11/03/03 Search for Resources on Image processing from the library. Started to gain background information on image processing
13/03/03 Meeting with supervisor - Discussed on image segmentation problem. Supervisor made photo copies of some well know papers in literature on clustering and image segmentation.
14/03/03 Search on internet such as citeseer.com on for image segmentation papers
17/03/03 Reading of acquired literature
20/03/03 Meeting with supervisor - Further discussion on image segmentation and possible areas of interest for the research, which includes clustering and region merging.
25/03/03 Acquire literature on clustering from library and internet.
27/03/03 Meeting with supervisor - acquired additional papers from supervisor
01/04/03 Reading of image segmentation papers
03/04/03 Meeting with supervisor - Discussed on findings about image segmentation and some background explanations.
06/04/03 Acquire literature on region based image segmentation
10/04/03 Meeting with supervisor - Discussed on region based image segmentation and how it works.
15/04/03 Reading of Image segmentation papers
18/04/03 Started Writing Project proposal
15/04/03 Project proposal Draft
24/04/03 Meeting with supervisor - checking through project proposal with supervisor and making amendments
30/04/03 Project Proposal due
01/05/03 Meeting with supervisor - Gain some background information about the Monash image library to be used as a tool to write C code for the project.
02/05/03 Started Coding for K-Means Clustering in C.
08/05/03 Meeting with supervisor - Discuss on findings on implementation of C code and how it works
11/05/03 Programming Code for Clustering By K-Means Method Implemented for Grey-level Images.
15/05/03 Interim Presentation preparation/meeting with supervisor. Discussed on what needs to be presented in the Interim presentation
28/05/03 interim Presentation Draft in PowerPoint format.
29/05/03 Meeting with supervisor - Consult supervisor  on Interim Presentation material. Made some adjustments to some of the points to be presented.
05/06/03 Interim Presentation
06/06/03 Start on literature review
11/06/03 Literature Review Second Draft Due/meeting with supervisor - Discussed on further contents to be added to the literature review.
23/06/03 Expand programming code to automatically determine K in grey level images.
25/06/03 Generate synthetic test images using C and Monash Image Library, with uniform distributed noise.
26/06/03 Meeting with supervisor - discussed about progress, and possible natural image test data to be used for the project.
30/06/03 Acquire natural images.
03/07/03 Meeting with supervisor - Discuss on progress
04/07/03 Acquire natural images
06/07/03 Select test data set for natural images from the acquired imagoes covering wide range of different types of images
10/07/03 Meeting with supervisor
14/07/03 Worked on Literature Review, made corrections on grammatical errors and spelling mistakes.
20/07/03 Worked on Literature Review, searched for more papers.
23/07/03 Worked on Literature Review Draft 
24/07/03 Meeting with supervisor - Discuss with supervisor on changes to be made to the literature review
31/07/03 Literature Review Due
01/08/03 Meeting with supervisor - Discussed about automatic detection of K for colour image clustering done by Ray and Turi.
03/08/03 investigate on Ray and Turi's validity criterion 
09/08/03 investigate on Liu and Yang's validity criterion
11/08/03 Meeting with supervisor - Discuss on findings of the investigation on Turi and Ray and Liu and Yang validity criterion
15/08/03 Investigate on the basic validity criterion and variations of Liu and Yang's multiplier function
18/08/03 Meeting with supervisor - Discuss on progress and findings
20/08/03 Apply a new validity criterion to synthetic images /Investigate on region merging techniques
22/08/03 Test on basic majority rule merging technique
25/08/03 Meeting with supervisor - Discuss on findings, on some of the limitations of the basic merging technique.
28/08/03 Investigate on alternative majority rule merging technique
29/08/03 Investigate on alternative majority rule merging technique
01/09/03 Meeting with supervisor - discuss on findings of the investigation on merging techniques.
04/09/03 New merging method developed by using the majority rule, and using the spatial information from the neighbouring pixel's neighbouring pixels
08/09/03 Meeting with supervisor - Discussed on the proposed merging method.
10/09/03 Start coding for new method
16/09/30 Apply new method as post processing to clustering
22/09/03 Meeting with supervisor - Discussed on progress
25/09/03 Applying both methods to natural images
29/09/03 Meeting with supervisor - Discuss on the results obtained from applying the hybrid method
30/09/03 Start writing up thesis
04/10/03 Include results from the clustering in the thesis
06/10/03 Meeting with supervisor
08/10/03 Write some discussion of results in the thesis.
11/10/03 Made comparison between method used and analysis of data to be included in the thesis
13/10/03 Meeting with supervisor - Discussed on vital information that needs to be included in the thesis. Made corrections of previous draft.
15/10/03 Writing up of thesis
17/10/03 Writing up of thesis
20/10/03 Writing up of thesis
22/10/03 Writing up of thesis
25/10/03 Start on preparing PowerPoint slides for final presentation.
26/10/03 Work on speech for final presentation.
27/10/03 Final Presentation/ Meeting with supervisor - Discuss on further improvements to be made to thesis.
28/10/03 Writing up of thesis
29/10/03 Writing up of thesis
30/10/03 Writing up of thesis
31/10/03 Writing up of thesis
01/11/03 Writing up of thesis
02/11/03 Meeting with supervisor - Corrections added to the thesis, and discussed on possible changes and additional information to be added.
03/11/03 Final touches made to the thesis.
04/11/03 Thesis due