CONTENT BASED MEDICAL IMAGE INDEXING AND RETRIEVAL USING A FUZZY COMPACT COMPOSITE DESCRIPTOR

CONTENT BASED MEDICAL IMAGE INDEXING AND RETRIEVAL USING A FUZZY COMPACT COMPOSITE DESCRIPTOR Savvas Chatzichristofis and Yiannis Boutalis Department of Electrical & Computer Engineering Democritus University of Thrace – Greece Signal Processing, Pattern Recognition and Applications SPPRA 2009 Presenter: Savvas A. Chatzichristofis

[object Object],Natural Images CEDD FCTH Artificial Images SpCL Medical Images BTDH CONTENT BASED MEDICAL IMAGE INDEXING AND RETRIEVAL USING A FUZZY COMPACT COMPOSITE DESCRIPTOR

Proposed Descriptor BTDH ,[object Object],[object Object],[object Object],CONTENT BASED MEDICAL IMAGE INDEXING AND RETRIEVAL USING A FUZZY COMPACT COMPOSITE DESCRIPTOR

Proposed Descriptor BTDH ,[object Object],[object Object],CONTENT BASED MEDICAL IMAGE INDEXING AND RETRIEVAL USING A FUZZY COMPACT COMPOSITE DESCRIPTOR

Descriptor Implementation CONTENT BASED MEDICAL IMAGE INDEXING AND RETRIEVAL USING A FUZZY COMPACT COMPOSITE DESCRIPTOR

Pre-Filtering unit ,[object Object],This method is partially inspired by the HVS (Human Vision System). It particularly adopts some of the shunting characteristics of the on-center off-surround networks, in order to define the response function for a new artificial center-surround network. CONTENT BASED MEDICAL IMAGE INDEXING AND RETRIEVAL USING A FUZZY COMPACT COMPOSITE DESCRIPTOR

Pre-Filtering unit ,[object Object],A coordinate logic filter ( CLF ) ‘ OR’ is applied to the image. This filter enhances the edges of the image. Thus, it aims to help the texture information extraction unit to reach weaker texture alterations. CONTENT BASED MEDICAL IMAGE INDEXING AND RETRIEVAL USING A FUZZY COMPACT COMPOSITE DESCRIPTOR

Brightness information extraction unit ,[object Object],[object Object],[object Object],Brightness Classification System CONTENT BASED MEDICAL IMAGE INDEXING AND RETRIEVAL USING A FUZZY COMPACT COMPOSITE DESCRIPTOR Fuzzy system output V(A) V(B) C(0) C(1) C(2) C(3) C(4) C(5) C(6) C(7) 3.18 22.68 54.00 90.13 125.80 162.57 202.25 243.64

Texture Information extraction unit ,[object Object],[object Object],[object Object],Texture Classification System CONTENT BASED MEDICAL IMAGE INDEXING AND RETRIEVAL USING A FUZZY COMPACT COMPOSITE DESCRIPTOR Fuzzy system output V(B) V(A)

Descriptor Structure ,[object Object],CONTENT BASED MEDICAL IMAGE INDEXING AND RETRIEVAL USING A FUZZY COMPACT COMPOSITE DESCRIPTOR

Descriptor Implementation The procedure is repeated for all the Blocks. On the completion of the process, the descriptor's histograms bin values are normalized within the interval [0,1] To restrict the proposed descriptor storage requirements, the bin values of the descriptor are quantized for binary representation using a three bits/bin quantization. CONTENT BASED MEDICAL IMAGE INDEXING AND RETRIEVAL USING A FUZZY COMPACT COMPOSITE DESCRIPTOR 1. Auto brightness correction 2. Edge enhancement 3. Divided into 3X3 Blocks 4. Directionality Form n=2 5. Brightness Form m=3 6. Bin(19) is Activated

Quantization ,[object Object],Bin(19)=3 CONTENT BASED MEDICAL IMAGE INDEXING AND RETRIEVAL USING A FUZZY COMPACT COMPOSITE DESCRIPTOR 000 001 010 011 100 101 110 111 3.6E-04 2.3E-03 4.5E-03 7.2E-03 1.1E-02 1.6E-02 3.1E-02 5.7E-01 3.2E-04 1.9E-03 3.7E-03 5.7E-03 8.4E-03 1.3E-02 2.4E-02 5.3E-01 3.3E-04 1.9E-03 3.5E-03 5.3E-03 7.6E-03 1.1E-02 1.6E-02 4.0E-02 3.7E-04 2.1E-03 4.1E-03 6.3E-03 8.8E-03 1.2E-02 2.0E-02 6.9E-02 3.2E-04 1.8E-03 3.4E-03 5.4E-03 7.9E-03 1.1E-02 1.7E-02 3.9E-02 3.1E-04 1.7E-03 3.3E-03 5.3E-03 7.8E-03 1.1E-02 1.8E-02 5.6E-02 3.6E-04 2.0E-03 3.9E-03 6.1E-03 8.6E-03 1.3E-02 2.1E-02 7.8E-02 3.6E-04 2.1E-03 4.0E-03 6.2E-03 9.0E-03 1.3E-02 2.4E-02 1.9E-01 3.7E-04 2.3E-03 4.4E-03 7.0E-03 1.0E-02 1.6E-02 2.9E-02 2.4E-01 4.2E-04 2.5E-03 4.9E-03 7.6E-03 1.1E-02 1.9E-02 5.3E-02 6.8E-01 3.6E-04 2.1E-03 3.9E-03 6.3E-03 9.3E-03 1.4E-02 2.7E-02 4.4E-01 3.7E-04 2.2E-03 4.3E-03 6.9E-03 1.1E-02 1.6E-02 3.5E-02 3.8E-01 3.3E-04 2.0E-03 3.8E-03 6.2E-03 9.4E-03 1.4E-02 2.8E-02 3.7E-01 2.7E-04 1.8E-03 3.6E-03 5.7E-03 8.9E-03 1.3E-02 2.6E-02 3.6E-01 3.0E-04 2.0E-03 3.9E-03 6.1E-03 8.8E-03 1.3E-02 2.6E-02 3.7E-01 3.2E-04 2.1E-03 4.2E-03 6.8E-03 1.0E-02 1.5E-02 3.1E-02 4.3E-01 Bin(19)=0.006 n=2 The final size of the proposed descriptor is

Similarity Measure ,[object Object],[object Object],[object Object],CONTENT BASED MEDICAL IMAGE INDEXING AND RETRIEVAL USING A FUZZY COMPACT COMPOSITE DESCRIPTOR

Experiments ,[object Object],CONTENT BASED MEDICAL IMAGE INDEXING AND RETRIEVAL USING A FUZZY COMPACT COMPOSITE DESCRIPTOR

Experiments ,[object Object],[object Object],[object Object],CONTENT BASED MEDICAL IMAGE INDEXING AND RETRIEVAL USING A FUZZY COMPACT COMPOSITE DESCRIPTOR Descriptor ANMRR Proposed Method Using Tanimoto 0.272 Proposed Method Using Jensen-Shannon 0.283 Proposed Method Using Euclidian 0.287 Tamura Directionality Histogram 0.321 Gabor Vector 0.328 MPEG7: Edge Histogram 0.381 Gray Value Histogram 0.448

Experiments on IRMA 2005 Medical Image Database ,[object Object],CONTENT BASED MEDICAL IMAGE INDEXING AND RETRIEVAL USING A FUZZY COMPACT COMPOSITE DESCRIPTOR Descriptor MAP Proposed Descriptor 28.1 Gabor vector 27.7 Gray value histogram 26.1 Gabor histogram 25.2 inv. feature histogram (mon.) 24.4 inv. feature histogram (relational) 24.1 LF patches signature 23.0 Tamura Directionality Histo. 21.6 LF SIFT global search 20.9 LF patches global 17.6 global texture feature 16.4 LF SIFT signature 10.9 MPEG7: edge histogram 10.9

Demonstration CONTENT BASED MEDICAL IMAGE INDEXING AND RETRIEVAL USING A FUZZY COMPACT COMPOSITE DESCRIPTOR

Conclusions ,[object Object],[object Object]

[object Object],[object Object],Thank You Ευχαριστώ Πολύ CONTENT BASED MEDICAL IMAGE INDEXING AND RETRIEVAL USING A FUZZY COMPACT COMPOSITE DESCRIPTOR

CONTENT BASED MEDICAL IMAGE INDEXING AND RETRIEVAL USING A FUZZY COMPACT COMPOSITE DESCRIPTOR

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