Active Shape Model Search using Local Grey-Level Models : A Quantitative Evaluation
Timothy F. Cootes,Christopher J. Taylor +1 more
- 01 Jan 1993
- pp 1-10
TL;DR: The results demonstrate that the addition of grey-level models leads to considerable improvement over earlier schemes, leading to improved reliability and accuracy.
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Abstract: We describe methods for locating known structures in images. We have previously described statistical models of shape and shape variability which can be used for this purpose (Active Shape Models). In this paper we show how statistical models of grey-level appearance can be incorporated, leading to improved reliability and accuracy. We describe experiments designed to (i) test how well an ASM can locate an object in a new image, (ii) to assess the effects on performance of varying the model parameters, and (iii) to compare the results using grey-level models with those using a search for strongest edges. The results demonstrate that the addition of grey-level models leads to considerable improvement over earlier schemes.
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Citations
Active shape models—their training and application
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References
Snakes : Active Contour Models
TL;DR: This work uses snakes for interactive interpretation, in which user-imposed constraint forces guide the snake near features of interest, and uses scale-space continuation to enlarge the capture region surrounding a feature.
Feature extraction from faces using deformable templates
Alan L. Yuille,David S Cohen,Peter W. Hallinan +2 more
- 04 Jun 1989
TL;DR: A method for detecting and describing the features of faces using deformable templates is described, demonstrated by showing deformable template detecting eyes and mouths in real images.
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Feature extraction from faces using deformable templates
TL;DR: In this article, a deformable template is used to detect and describe features of faces using deformable templates and an energy function is defined which links edges, peaks, and valleys in the image intensity to corresponding properties of the template.
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The Use of Active Shape Models for Locating Structures in Medical Images
Timothy F. Cootes,A. Hill,Christopher J. Taylor,J. Haslam +3 more
- 14 Jun 1993
TL;DR: It is described how the models can be used in local image search and give examples of their application to medical images, and how the method can be simply extended to segment 3-D objects in volume images and to track structures in image sequences.
816
Closed-form solutions for physically based shape modeling and recognition
Alex Pentland,Stan Sclaroff +1 more
TL;DR: The authors present a closed-form, physically based solution for recovering a three-dimensional (3-D) solid model from collections of 3-D surface measurements that is overconstrained and unique except for rotational symmetries.
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