Shape extraction in fetal ultrasound images using a Hermite-based filtering approach and a point distribution model

2016 ◽  
Author(s):  
Lorena Vargas-Quintero ◽  
Boris Escalante-Ramírez ◽  
Lisbeth Camargo Marín ◽  
Mario Guzmán Huerta ◽  
Fernando Arámbula Cosio ◽  
...  
Keyword(s):  
Distribution Model ◽  
Ultrasound Images ◽  
Fetal Ultrasound ◽  
Point Distribution ◽  
Shape Extraction ◽  
Point Distribution Model ◽  
Filtering Approach

scholarly journals A Multiscale Constraints Method Localization of 3D Facial Feature Points

2015 ◽  
Vol 2015 ◽  
pp. 1-6
Author(s):  
Hong-an Li ◽  
Yongxin Zhang ◽  
Zhanli Li ◽  
Huilin Li
Keyword(s):  
Facial Feature ◽  
Feature Point ◽  
Distribution Model ◽  
Feature Points ◽  
Widespread Application ◽  
Point Distribution ◽  
Localization Accuracy ◽  
Localization Method ◽  
Relative Angle ◽  
Point Distribution Model

It is an important task to locate facial feature points due to the widespread application of 3D human face models in medical fields. In this paper, we propose a 3D facial feature point localization method that combines the relative angle histograms with multiscale constraints. Firstly, the relative angle histogram of each vertex in a 3D point distribution model is calculated; then the cluster set of the facial feature points is determined using the cluster algorithm. Finally, the feature points are located precisely according to multiscale integral features. The experimental results show that the feature point localization accuracy of this algorithm is better than that of the localization method using the relative angle histograms.

Sign in / Sign up

Export Citation Format

Share Document