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Cephalometric tracing method is usually used in orthodontic diagnosis and treatment planning. In this paper, we propose a deep learning based framework to automatically detect anatomical landmarks in cephalometric X-ray images. We train the…

Image and Video Processing · Electrical Eng. & Systems 2020-09-30 Zhusi Zhong , Jie Li , Zhenxi Zhang , Zhicheng Jiao , Xinbo Gao

A deep neural network based cephalometric landmark identification model is proposed. Two neural networks, named patch classification and point estimation, are trained by multi-scale image patches cropped from 935 Cephalograms (of Japanese…

Image and Video Processing · Electrical Eng. & Systems 2019-06-10 Chonho Lee , Chihiro Tanikawa , Jae-Yeon Lim , Takashi Yamashiro

Most face applications depend heavily on the accuracy of the face and facial landmarks detectors employed. Prediction of attributes such as gender, age, and identity usually completely fail when the faces are badly aligned due to inaccurate…

Computer Vision and Pattern Recognition · Computer Science 2016-08-24 Andreas Steger , Radu Timofte , Luc Van Gool

Anatomical landmarks are a crucial prerequisite for many medical imaging tasks. Usually, the set of landmarks for a given task is predefined by experts. The landmark locations for a given image are then annotated manually or via machine…

Computer Vision and Pattern Recognition · Computer Science 2020-01-23 Richard Droste , Pierre Chatelain , Lior Drukker , Harshita Sharma , Aris T. Papageorghiou , J. Alison Noble

3D facial landmark localization has proven to be of particular use for applications, such as face tracking, 3D face modeling, and image-based 3D face reconstruction. In the supervised learning case, such methods usually rely on 3D landmark…

Computer Vision and Pattern Recognition · Computer Science 2024-05-31 David Ferman , Pablo Garrido , Gaurav Bharaj

Extraction of discriminative features from salient facial patches plays a vital role in effective facial expression recognition. The accurate detection of facial landmarks improves the localization of the salient patches on face images.…

Computer Vision and Pattern Recognition · Computer Science 2018-07-19 S L Happy , Aurobinda Routray

Learning automatically the structure of object categories remains an important open problem in computer vision. In this paper, we propose a novel unsupervised approach that can discover and learn landmarks in object categories, thus…

Computer Vision and Pattern Recognition · Computer Science 2017-08-08 James Thewlis , Hakan Bilen , Andrea Vedaldi

The accurate identification and precise localization of cephalometric landmarks enable the classification and quantification of anatomical abnormalities. The traditional way of marking cephalometric landmarks on lateral cephalograms is a…

Image and Video Processing · Electrical Eng. & Systems 2023-02-16 Muhammad Anwaar Khalid , Kanwal Zulfiqar , Ulfat Bashir , Areeba Shaheen , Rida Iqbal , Zarnab Rizwan , Ghina Rizwan , Muhammad Moazam Fraz

Automated cephalometric landmark detection is crucial in real-world orthodontic diagnosis. Current studies mainly focus on only adult subjects, neglecting the clinically crucial scenario presented by adolescents whose landmarks often…

Computer Vision and Pattern Recognition · Computer Science 2024-06-19 Han Wu , Chong Wang , Lanzhuju Mei , Tong Yang , Min Zhu , Dingggang Shen , Zhiming Cui

Localization of salient facial landmark points, such as eye corners or the tip of the nose, is still considered a challenging computer vision problem despite recent efforts. This is especially evident in unconstrained environments, i.e., in…

Computer Vision and Pattern Recognition · Computer Science 2015-01-21 Nenad Markuš , Miroslav Frljak , Igor S. Pandžić , Jörgen Ahlberg , Robert Forchheimer

The de facto algorithm for facial landmark estimation involves running a face detector with a subsequent deformable model fitting on the bounding box. This encompasses two basic problems: i) the detection and deformable fitting steps are…

Computer Vision and Pattern Recognition · Computer Science 2017-08-22 Jiankang Deng , George Trigeorgis , Yuxiang Zhou , Stefanos Zafeiriou

We present a novel unsupervised learning approach to image landmark discovery by incorporating the inter-subject landmark consistencies on facial images. This is achieved via an inter-subject mapping module that transforms original subject…

Computer Vision and Pattern Recognition · Computer Science 2020-07-09 Weijian Li , Haofu Liao , Shun Miao , Le Lu , Jiebo Luo

The field of animal affective computing is rapidly emerging, and analysis of facial expressions is a crucial aspect. One of the most significant challenges that researchers in the field currently face is the scarcity of high-quality,…

Computer Vision and Pattern Recognition · Computer Science 2024-03-06 George Martvel , Ilan Shimshoni , Anna Zamansky

Face detection is to search all the possible regions for faces in images and locate the faces if there are any. Many applications including face recognition, facial expression recognition, face tracking and head-pose estimation assume that…

Computer Vision and Pattern Recognition · Computer Science 2021-12-06 Yuantao Feng , Shiqi Yu , Hanyang Peng , Yan-Ran Li , Jianguo Zhang

Facial landmark detection is an important yet challenging task for real-world computer vision applications. This paper proposes an effective and robust approach for facial landmark detection by combining data- and model-driven methods.…

Computer Vision and Pattern Recognition · Computer Science 2018-02-13 Hongwen Zhang , Qi Li , Zhenan Sun , Yunfan Liu

Being accurate, efficient, and compact is essential to a facial landmark detector for practical use. To simultaneously consider the three concerns, this paper investigates a neat model with promising detection accuracy under wild…

Computer Vision and Pattern Recognition · Computer Science 2019-03-05 Xiaojie Guo , Siyuan Li , Jinke Yu , Jiawan Zhang , Jiayi Ma , Lin Ma , Wei Liu , Haibin Ling

Cascaded Regression (CR) based methods have been proposed to solve facial landmarks detection problem, which learn a series of descent directions by multiple cascaded regressors separately trained in coarse and fine stages. They outperform…

Computer Vision and Pattern Recognition · Computer Science 2018-03-20 Tao Hu , Honggang Qi , Jizheng Xu , Qingming Huang

Conventional feature-based and model-based gaze estimation methods have proven to perform well in settings with controlled illumination and specialized cameras. In unconstrained real-world settings, however, such methods are surpassed by…

Computer Vision and Pattern Recognition · Computer Science 2018-05-15 Seonwook Park , Xucong Zhang , Andreas Bulling , Otmar Hilliges

Quantitative cephalometric analysis is the most widely used clinical and research tool in modern orthodontics. Accurate localization of cephalometric landmarks enables the quantification and classification of anatomical abnormalities,…

Computer Vision and Pattern Recognition · Computer Science 2023-04-04 Muhammad Anwaar Khalid , Kanwal Zulfiqar , Ulfat Bashir , Areeba Shaheen , Rida Iqbal , Zarnab Rizwan , Ghina Rizwan , Muhammad Moazam Fraz

Facial landmark detection has been studied over decades. Numerous neural network (NN)-based approaches have been proposed for detecting landmarks, especially the convolutional neural network (CNN)-based approaches. In general, CNN-based…

Computer Vision and Pattern Recognition · Computer Science 2020-05-19 Chih-Fan Hsu , Chia-Ching Lin , Ting-Yang Hung , Chin-Laung Lei , Kuan-Ta Chen