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Automatic active model initialization via Poisson inverse gradient
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DOI：10.1109/TIP.2008.925375.png)
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Abstract
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Active models have been widely used in image processing applications. A crucial stage that affects the ultimate active model performance is initialization. This paper proposes a novel automatic initialization approach for parametric active models in both 2-D and 3-D. The PIG initialization method exploits a novel technique that essentially estimates the external energy field from the external force field and determines the most likely initial segmentation. Examples and comparisons with two state-of-the-art automatic initialization methods are presented to illustrate the advantages of this innovation, including the ability to choose the number of active models deployed, rapid convergence, accommodation of broken edges, superior noise robustness, and segmentation accuracy.
Keywords:
active contours
active models
active surfaces
deformable models
deformable surfaces
initialization
Poisson's equation
Poisson inverse gradient
snakes
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