Yen Le Computation Biomedicine Lab Advisor: Dr. Kakadiaris 1 Automatic Multi-Region Segmentation...
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Transcript of Yen Le Computation Biomedicine Lab Advisor: Dr. Kakadiaris 1 Automatic Multi-Region Segmentation...
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Yen LeComputation Biomedicine Lab
Advisor: Dr. Kakadiaris
Automatic Multi-Region Segmentation Applied to Gene Expression Image from Mouse
Brain
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Problem Statement• Problem Statement: Segmentation anatomical regions
of mouse brain gene expression images (in 2D or 3D)• Data: In Situ Hybridization (ISH) images
• Motivation:– Identify and associate the location and extent of
expression of a gene in mouse brain image– Understand how genes regulate the biological process
at cellular and molecular levels
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Accomplishments to-date
• 2D– Geometric model to image fitting methods– Image-to-image registration method
• 3D– Descriptors for 3D landmark detection
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3D Dense Local Point Descriptors
• Motivation– Need for anatomical landmarks
– Need 3D local point descriptors which can:• Be computed fast at densely sampled points• Result in accurate landmark point detection
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• DAISY3D and DAISYDO– Extended from DAISY descriptor– Faster than SIFT-3D, n-SIFT at densely sampled
points– Good for landmark detection on gene expression
images
• DAISY3D vs. DAISYDO– DAISYDO requires less memory than DAISY3D– DAISYDO is faster– Comparable performance
3D Dense Local Point Descriptors (2)
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3D Dense Local Point Descriptors (3)
DAISY’s configuration Configuration
Forming DAISY feature vectorForming DAISYDO feature vector
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Performance Evaluation
• Detected landmarks: voxels having the minimum -distance between its descriptor and the descriptor of referenced landmark
Mean error (in voxels) for landmark detection in gene expression image
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PublicationsRefereed Journal Articles
Yen H. Le, U. Kurkure, I. A. Kakadiaris, “Dense Local Point Descriptors for 3D Images,” Pattern Recognition (Submitted).
U. Kurkure, Yen H. Le, N. Paragios, J. Carson, T. Ju, I. A. Kakadiaris, “Landmark-Constrained Deformable Image Registration of Gene Expression Images for Atlas Mapping,” NeuroImage, Elsevier Science (Submitted).
Refereed Conference ArticlesYen H. Le, U. Kurkure, N. Paragios, J. P. Carson, T. Ju, and I. A. Kakadiaris, “Similarity-based appearance prior for fitting subdivision mesh in gene expression image,” IEEE Computer Vision and Pattern Recognition 2012 (Submitted).
U. Kurkure, Y. H. Le, N. Paragios, J. P. Carson, T. Ju, and I. A. Kakadiaris. “Landmark/image-based deformable registration of gene expression data,” In Proc. IEEE Computer Vision and Pattern Recognition, pages 1089–1096, Colorado Springs, CO, Jun. 21-23 2011.
U. Kurkure, Y. H. Le, N. Paragios, J. Carson, T. Ju, and I. A. Kakadiaris, Nov. 6-13 2011, “Markov random field-based fitting of a subdivision-based geometric atlas,” In: Proc. IEEE International Conference on Computer Vision. Barcelona, Spain, pp. 2540–2547.