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Active Shape Model (ASM) is a statistical model of object shapes that represents a target structure. ASM can guide machine learning algorithms to fit a set of points representing an object (e.g., face) onto an image. This paper presents a…

计算机视觉与模式识别 · 计算机科学 2021-06-17 Ali Pourramezan Fard , Hojjat Abdollahi , Mohammad Mahoor

The research fields of parametric face model and 3D face reconstruction have been extensively studied. However, a critical question remains unanswered: how to tailor the face model for specific reconstruction settings. We argue that…

计算机视觉与模式识别 · 计算机科学 2023-10-10 Kai Yang , Hong Shang , Tianyang Shi , Xinghan Chen , Jingkai Zhou , Zhongqian Sun , Wei Yang

Active Shape Models (ASM) are an iterative segmentation technique to find a landmark-based contour of an object. In each iteration, a least-squares fit of a plausible shape to some detected target landmarks is determined. Finding these…

计算机视觉与模式识别 · 计算机科学 2017-07-31 Alma Eguizabal , Peter J. Schreier

Recently, Adaboost has been widely used to improve the accuracy of any given learning algorithm. In this paper we focus on designing an algorithm to employ combination of Adaboost with Support Vector Machine as weak component classifiers to…

计算机视觉与模式识别 · 计算机科学 2008-12-16 Seyyed Majid Valiollahzadeh , Abolghasem Sayadiyan , Mohammad Nazari

A standard pipeline of current face recognition frameworks consists of four individual steps: locating a face with a rough bounding box and several fiducial landmarks, aligning the face image using a pre-defined template, extracting…

计算机视觉与模式识别 · 计算机科学 2021-03-18 Xiaqing Xu , Qiang Meng , Yunxiao Qin , Jianzhu Guo , Chenxu Zhao , Feng Zhou , Zhen Lei

Face alignment aims to estimate the locations of a set of landmarks for a given image. This problem has received much attention as evidenced by the recent advancement in both the methodology and performance. However, most of the existing…

计算机视觉与模式识别 · 计算机科学 2015-06-12 Amin Jourabloo , Xiaoming Liu

Active Appearance Model (AAM) is a commonly used method for facial image analysis with applications in face identification and facial expression recognition. This paper proposes a new approach based on image alignment for AAM fitting called…

计算机视觉与模式识别 · 计算机科学 2015-11-23 Ali Mollahosseini , Mohammad H. Mahoor

Appearance variations result in many difficulties in face image analysis. To deal with this challenge, we present a Unified Tensor-based Active Appearance Model (UT-AAM) for jointly modelling the geometry and texture information of 2D…

计算机视觉与模式识别 · 计算机科学 2017-06-14 Zhen-Hua Feng , Josef Kittler , William Christmas , Xiao-Jun Wu

An ability to generalize unconstrained conditions such as severe occlusions and large pose variations remains a challenging goal to achieve in face alignment. In this paper, a multistage model based on deep neural networks is proposed which…

计算机视觉与模式识别 · 计算机科学 2020-02-05 Huabin Wang , Rui Cheng , Jian Zhou , Liang Tao , Hon Keung Kwan

A face model is a mathematical representation of the distinct features of a human face. Traditionally, face models were built using a set of fiducial points or landmarks, each point ideally located on a facial feature, i.e., corner of the…

计算机视觉与模式识别 · 计算机科学 2023-11-07 Jagmohan Meher , Hector Allende-Cid , Torbjörn E. M. Nordling

Face alignment is a classic problem in the computer vision field. Previous works mostly focus on sparse alignment with a limited number of facial landmark points, i.e., facial landmark detection. In this paper, for the first time, we aim at…

计算机视觉与模式识别 · 计算机科学 2017-09-06 Yaojie Liu , Amin Jourabloo , William Ren , Xiaoming Liu

Statistical shape models (SSM) have been well-established as an excellent tool for identifying variations in the morphology of anatomy across the underlying population. Shape models use consistent shape representation across all the samples…

计算机视觉与模式识别 · 计算机科学 2023-08-23 Mokshagna Sai Teja Karanam , Tushar Kataria , Krithika Iyer , Shireen Elhabian

Simulating facial appearance change following bony movement is a critical step in orthognathic surgical planning for patients with jaw deformities. Conventional biomechanics-based methods such as the finite-element method (FEM) are labor…

Active Appearance Models (AAMs) are a well-established technique for fitting deformable models to images, but they are limited by linear appearance assumptions and can struggle with complex variations. In this paper, we explore if the AAM…

计算机视觉与模式识别 · 计算机科学 2025-04-08 Anurag Awasthi

The variation of pose, illumination and expression makes face recognition still a challenging problem. As a pre-processing in holistic approaches, faces are usually aligned by eyes. The proposed method tries to perform a pixel alignment…

计算机视觉与模式识别 · 计算机科学 2018-08-01 Hoda Mohammadzade , Amirhossein Sayyafan , Benyamin Ghojogh

Particle-based shape modeling (PSM) is a family of approaches that automatically quantifies shape variability across anatomical cohorts by positioning particles (pseudo landmarks) on shape surfaces in a consistent configuration. Recent…

计算机视觉与模式识别 · 计算机科学 2025-07-11 Hong Xu , Shireen Y. Elhabian

Facial alignment involves finding a set of landmark points on an image with a known semantic meaning. However, this semantic meaning of landmark points is often lost in 2D approaches where landmarks are either moved to visible boundaries or…

计算机视觉与模式识别 · 计算机科学 2017-09-11 Chandrasekhar Bhagavatula , Chenchen Zhu , Khoa Luu , Marios Savvides

Face alignment, which is the task of finding the locations of a set of facial landmark points in an image of a face, is useful in widespread application areas. Face alignment is particularly challenging when there are large variations in…

计算机视觉与模式识别 · 计算机科学 2016-10-25 Oncel Tuzel , Tim K. Marks , Salil Tambe

Nowadays, it is possible to scan faces and automatically register them with high quality. However, the resulting face meshes often need further processing: we need to stabilize them to remove unwanted head movement. Stabilization is…

计算机视觉与模式识别 · 计算机科学 2024-11-25 Jan Bednarik , Erroll Wood , Vasileios Choutas , Timo Bolkart , Daoye Wang , Chenglei Wu , Thabo Beeler

Automated face recognition and identification softwares are becoming part of our daily life; it finds its abode not only with Facebook's auto photo tagging, Apple's iPhoto, Google's Picasa, Microsoft's Kinect, but also in Homeland Security…

计算机视觉与模式识别 · 计算机科学 2015-06-22 Poonam Yadav
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