Image analysis – Applications – 3-d or stereo imaging analysis
Patent
1997-02-05
1999-05-11
Couso, Jose L.
Image analysis
Applications
3-d or stereo imaging analysis
G06K9/00
Patent
active
059036648
ABSTRACT:
A cardiac segmentation system acquires a series of images acquires as slices through a volume, and as images at different time periods throughout a cardiac cycle. It displays an image to an operator which interactively selects a region of interest (ROI) of the image to be segmented, such as the left ventricle. A seed point is also selected within the ROI and the structure desired to be segmented. The image is then thresholded by a masking device classifying points within the ROI as above the threshold, or not above the threshold. A 3D connectivity device identifies points within the ROI having the same classification as an expanded seed point which are also contiguous with the seed point as the segmented structure. The segmented structure is expanded and a histogram is constructed. A new threshold is selected which separates modes of the histogram, and used to carry out a revised, final, segmentation of the current image. The centroid of the current image is used as a seed point in segmenting adjacent images. Similarly, the current threshold is used as an initial threshold for adjacent images. The previous seed point and ROI may also be used. This is repeated for a number of images to result in segmented structures may then be stored, displayed and used in calculating heart functionality.
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Cline Harvey Ellis
Curwen Rupert William Meldrum
Hartley Richard Ian
Couso Jose L.
Dang Duy M.
General Electric Company
Snyder Marvin
Stoner Douglas E.
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