Image analysis – Applications – Biomedical applications
Reexamination Certificate
2011-01-25
2011-01-25
Tabatabai, Abolfazl (Department: 2624)
Image analysis
Applications
Biomedical applications
C378S004000, C378S021000
Reexamination Certificate
active
07876947
ABSTRACT:
A method for computer-aided object classification, soft segmentation and layer extraction in computed tomographic colonography includes providing a contrast enhanced computed tomography (CT) digital image of the colon, finding a foreground region of voxels with an intensity higher than a pre-defined foreground threshold, creating a 3D trimap of the colon where the image is segmented into the foreground region, a background region, and an unknown region between the foreground and background, starting from the background, extracting successive layers of the unknown region until the foreground region is reached, and classifying each extracted layer as background or foreground, and generating a foreground matte, a background matte, and an alpha matte, where alpha indicates a mixing ration of foreground and background voxels.
REFERENCES:
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Tu et al., “A Learning Based Approach for 3D Segmentation and Colon Detagging”, Computer Vision—ECCV 2006 Lecture Notes in Computer Science, Springer, Berlin, DE, vol. 3953, Jan. 1, 2006, pp. 436-448.
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Yung-Yu change, et al., “Video Matting of Complex Scenes,” ACM Transaction on Graphics 21 (3) (2002) 243-248.
Lakare Sarang
Lee Tin Man
Wolf Matthias
Siemens Medical Solutions USA , Inc.
Tabatabai Abolfazl
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