Robust Face Tracking via Collaboration of Generic and Specific Models (2009)
Peng Wang, Qiang Ji, Senior Member
Abstract—Significant appearance changes of objects under different orientations could cause loss of tracking, “drifting.” In this paper, we present a collaborative tracking framework to...
Novel Eye Gaze Tracking Techniques Under Natural Head Movement (2009)
Zhiwei Zhu, Qiang Ji, Senior Member
Abstract—Most available remote eye gaze trackers have two characteristics that hinder them being widely used as the important computer input devices for human computer interaction. First, they have...
Hieu Nguyen, Qiang Ji, Senior Member
Abstract—Due to the significant complexity of membrane morphology and the generally poor image quality in electron tomographic volumes, current automatic methods for segmentation of membranes...
Towards an Integrated Cognitive Architecture for Modeling and Recognizing User Affect (2008)
Qiang Ji, Wayne D. Gray, Markus Guhe, Michael J. Schoelles
We outline the cognitive model CASS (Cognitive–Affective State System). As the name suggests it is a cognitive model that also takes human affect into account. CASS combines Dynamic Bayesian...
Face Pose Estimation From a Face Ellipse (2008)
In this paper, we describe a new approach for estimating 3D pose of a human face from a monocular image. We assume that the shape of a face can be approximated by an ellipse and the ratio of the...
Multi-view face tracking with factorial and switching HMM (2008)
Dynamic face pose change and noise make it difficult to track multi-view faces in a cluttering environment. In this paper, we propose a graphical model based method, which combines the factorial and...
Robust Object Tracking with a Case-base Updating Strategy (2008)
Wenhui Liao, Yan Tong, Zhiwei Zhu, Qiang Ji
The paper describes a simple but effective framework for visual object tracking in video sequences. The main contribution of this work lies in the introduction of a case-based reasoning (CBR) method...
A Comparative Study of Local Matching Approach for Face Recognition (2008)
Jie Zou, Qiang Ji, Senior Member, George Nagy
Abstract—In contrast to holistic methods, local matching methods extract facial features from different levels of locality and quantify them precisely. To determine how they can be best used for...
Model-Based Automated Extraction of Microtubules from Electron Tomography Volume (2008)
Ming Jiang, Qiang Ji, Senior Member, Bruce F. Mcewen
Microtubules form the skeletons of cells and serve as the intracellular network for protein transportation. More importantly, the microtubules attach to chromosomes via kinetochore to drive the...
Facial Action Unit Recognition by Exploiting Their Dynamic and Semantic Relationships (2008)
Yan Tong, Student Member, Wenhui Liao, Qiang Ji, Senior Member
Abstract—A system that could automatically analyze the facial actions in real time has applications in a wide range of different fields. However, developing such a system is always challenging due...
Abstract Automatic Eye Detection and Its Validation (2008)
Peng Wang, Matthew B. Green, Qiang Ji, James Wayman
The accuracy of face alignment affects the performance of a face recognition system. Since face alignment is usually conducted using eye positions, an accurate eye localization algorithm is therefore...
Qiang Ji, Senior Member, Peilin Lan, Carl Looney
Abstract—A probabilistic framework based on the Bayesian networks for modeling and real-time inferring human fatigue by integrating information from various sensory data and certain relevant...
Jie Zou, Qiang Ji, Senior Member, George Nagy
Abstract—In contrast to holistic methods, local matching methods extract facial features from different levels of locality and quantify them precisely. To determine how they can be best used for...
Peng Wang, Qiang Ji, Sr. Member, James L. Wayman, Sr. Member
Abstract—This paper presents methods of modeling and predicting face recognition (FR) system performance based on analysis of similarity scores. We define the performance of an FR system as its...
From Electron Tomography Volume (2008)
Ming Jiang, Qiang Ji, Senior Member, Bruce F. Mcewen
Abstract—Kinetochore microtubules (KMTs) and the associated plus-ends have been areas of intense investigation in both cell biology and molecular medicine. Though electron tomography opens up new...
George Nagy, Rpi Doclab, Nagy Icpr, Harsha Veeramachaneni, Tong Zhang, Jie Zou, ...
But all mistakes are my own!
3D Reconstruction of Circular Machine Features from a Single Image for Inspection (2007)
This paper introduces a constraint-based non-linear least-squares framework for simultaneously estimating camera parameters and reconstructing 3D circular machine features from a single image. The...
A Statistical Framework for Geometric Tolerancing Manufactured Parts (2007)
An image is never noise free. Visual inspection of a part from its image is therefore affected by image errors. Understanding how image errors affect measurement precision is therefore critical for...
Constrained Camera Parameter Estimation and 3D Points Reconstruction from a Single Image (2007)
This paper introduces a constraint-based non-linear least-squares framework for simultaneously estimating camera parameters and reconstructing 3D points from a single image. The essence of our...
Qiang Ji, Wayne D. Gray, Markus Guhe, Michael J. Schoelles
We outline the cognitive model CASS (Cognitive–Affective State System). As the name suggests it is a cognitive model that also takes human affect into account. CASS combines Dynamic Bayesian...
1 Classifying Cervix Tissue Patterns With Texture Analysis (2007)
Qiang Ji, John Engel, Eric Craine
This paper presents a generalized statistical texture analysis technique for characterizing and recognizing typical, diagnostically most important, vascular patterns relating to cervical lesions from...
Enhancement of microtubules in em tomography (2007)
The interpretation of the EM tomography of microtubules is challenging due to the low SNR and low contrast of the volume data. Therefore, image enhancement is crucial for the subsequent segmentation...
Short Papers Breakpoint Detection Using Covariance Propagation (2007)
Abstract—This paper presents a novel statistical approach for detecting breakpoints from chain encoded digital arcs. An arc point is declared as a breakpoint if the estimated orientations of the...
Digital Object Identifier (DOI) 10.1007/s00138-004-0139-4 Applications (2007)
Abstract. This paper describes a computer vision system based on active IR illumination for real-time gaze tracking for interactive graphic display. Unlike most of the existing gaze tracking...
A Statistical Framework for Geometric Tolerancing Manufactured Parts (2007)
An image is never noise free. Visual inspection of a part from its image is therefore affected by image errors. Understanding how image errors affect measurement precision is therefore critical for...
A real time face tracking and animation system (2007)
Xiaozhou Wei, Zhiwei Zhu, Lijun Yin, Qiang Ji
In this paper, a novel system for real time face tracking and animation is presented. The system is composed of two major components: (1) real time infra-red (IR) based active facial feature...
Towards an Integrated Cognitive Architecture for Modeling and Recognizing User Affect (2007)
Qiang Ji, Wayne D. Gray, Markus Guhe, Michael J. Schoelles
We outline the cognitive model CASS (Cognitive–Affective State System). As the name suggests it is a cognitive model that also takes human affect into account. CASS combines Dynamic Bayesian...
This paper explores the use of multisensory information fusion technique with Dynamic Bayesian networks (DBNs) for modeling and understanding the temporal behaviors of facial expressions in image...
Active and Dynamic Information Fusion (2005)
For Facial Expression, Yongmian Zhang, Qiang Ji, Senior Member
This paper explores the use of multisensory information fusion technique with Dynamic Bayesian networks (DBNs) for modeling and understanding the temporal behaviors of facial expressions in image...
Learning discriminant features for multi-view face and eye detection (2005)
In current face detection, mostly often used features are selected from a large set (e.g. Haar wavelets). Generally Haar wavelets only represent the local geometric feature. When applying those...
A decision theoretic model for stress recognition and user assitance (2005)
Wenhui Liao, Weihong Zhang, Zhiwei Zhu, Qiang Ji
We present a general unified probabilistic decisiontheoretic model based on Influence Diagrams for simultaneously modeling both user stress recognition and user assistance. Stress recognition is...
Active Affective State Detection and User Assistance With Dynamic Bayesian Networks (2005)
Xiangyang Li, Qiang Ji, Senior Member
Abstract—With the rapid development of pervasive and ubiquitous computing applications, intelligent user-assistance systems face challenges of ambiguous, uncertain, and multimodal sensory...
Self-calibration of a rotating camera with a translational offset (2004)
Abstract---Camera self calibration, based on a purely rotational movement of the camera, receives the most attention among different camera self-calibration methods due to its algorithmic simplicity....
Real Time Non-intrusive Monitoring and Prediction of Driver Fatigue (2004)
Zhiwei Zhu, Qiang Ji, Peilin Lan
This paper describes a real-time prototype computer vision system for monitoring driver vigilance. It uses a remotely located CCD camera equipped with an active IR illu-minator to acquire video...
Abstract. Information extraction of facial expressions deals with facial-feature detection, feature tracking, and capture of the spatiotemporal relationships among features. It is a fundamental task...
Multi-View Face Detection under Complex Scene based on Combined SVMs (2004)
A single face classifier has difficulty in detecting multiview faces under real and complex scenes due to various poses, cluttering environment and small size of faces. In this paper, we propose a...
Self-calibration of a rotating camera with a translational offset (2004)
Abstract—Camera self calibration, based on a purely rotational movement of the camera, receives the most attention among different camera self-calibration methods due to its algorithmic simplicity....
Non-intrusive Eye and Gaze Tracking for Natural Human Computer Interaction, MMIInteraktiv (2003)
Gaze determines the user's current line of sight or point of fixation. The fixation point is defined as the intersection of the line of sight with the surface of the object being viewed (such as...
A Dempster-Shafer approach for recognizing machine features from CAD models (2003)
This paper introduces an evidentialreasoningS-EF# approach forrecogLESNj andextracting manufacturing features from solid model description of objects. A major di#culty faced by previously proposed...
A new Efficient Ellipse Detection Method (2002)
In this paper, we introduce a new method for ellipse detection. This method takes the advantages of major axis of an ellipse to find ellipse parameter fast and efficiently. It only needs an...
Active Information Fusion for Decision Making Under Uncertainty (2002)
Abstract { Many information fusion applications especially in military domains are often characterized as a high degree ofcomplexity due to three challenges: 1) data are often acquired from sensors...
Eye and Gaze Tracking for Interactive Graphic Display (2002)
This paper describes preliminary results we have obtained in developing a computer vision system based on active IR illumination for real time gaze tracking for interactive graphic display. Unlike...
Zhiwei Zhu, Qiang Ji, Kikuo Fujimura
Most eye trackers based on active IR illumination re-quire distinctive bright pupil effect to work well. How-ever, due to a variety of factors such as eye closure, eye occlusion, and external...
Zhiwei Zhu, Qiang Ji, Kikuo Fujimura, Kuangchih Lee
Most eye trackers based on active IR illumination require distinctive bright pupil effect to work well. However, due to a variety of factors such as eye closure, eye occlusion, and external...
3D Face pose estimation and tracking from a monocular camera
An Integrated Linear Technique for Pose Estimation from Different Geometric Features (1999)
Qiang Ji, Mauro S. Costa, Robert M. Haralick, Linda G. Shapiro
Existing linear solutions for the pose estimation (or exterior orientation) problem suffer from a lack of robustness and accuracy partially due to the fact that the majority of the methods utilize...
Viusal Cues Extraction for Monitoring Driver's Vigilance (1999)
Results based on traffic accident analysis indicate that a leading cause for automobile accidents is due to a diminished vigilance on the part of the driver. Two major factors that may result in a...
An Integrated Linear Technique for Pose Estimation from Different Geometric Features (1999)
Qiang Ji, Mauro S. Costa, Robert M. Haralick, Linda G. Shapiro
Solutions to the pose estimation problem can be classified into linear (direct) solutions and non-linear solutions. For computer vision and photogrammetric applications, methods that offer a direct...
Breakpoint Detection Using Covariance Propagation (1998)
This paper presents a statistical approach for detecting breakpoints from chain encoded digital arcs. An arc point is declared as a breakpoint if the estimated orientations of the two fitted lines of...
Brian L. Craine, Eric R. Craine, Cynthia J. O’toole, Qiang Ji
The quantitative measurement of areas on the cervix is of interest to researchers studying the natural history of human papilloma viral lesions. Measurement of areas from images obtained through a...
Corner Detection with Covariance Propagation (1997)
This paper presents a statistical approach for detecting corners from chain encoded digital arcs. An arc point is declared as a corner if the estimated parameters of the two fitted lines of the two...
1. INTRODUCTION Machine identification and extraction of form features from CAD solid models is essential for many tasks in CAD/CAM, computer vision, and manufacturing. Example tasks in these areas...
Machine Interpretation of CAD Data for Manufacturing (1997)
Applications Qiang Ji, Qiang Ji, M. Marefat
this article are to review and summarize the development of research on machine recognition of features from CAD data, to discuss the advantages and potential problems of each approach, and to point...
This paper introduces a new uncertainty reasoning-based method for identification and extraction of manufacturing features from solid model description of objects. A major difficulty faced by...
Automated Visual Grading of Vegetative Cuttings (1996)
Commercial vegetative propagation of floricultural crops requires the segregation of plant cuttings into categories based on size. The cuttings however must be graded when they are planted...
Early Results in the Grading of Vegetative Cuttings using Computer Vision (1996)
Qiang Ji And, Qiang Ji, Sanjiv Singh
Commercial vegetative propagation of floricultural crops requires the segregation of plant cuttings into categories based on size. The cuttings however must be graded when they are planted...
Automated visual grading of vegetative cuttings (1996)
Commercial vegetative propagation of �oricultural crops requires the segregation of plant cuttings into categories based on size. The cuttings however must be graded when they are planted...
Automated visual grading of vegetative cuttings (1996)
Commercial vegetative propagation of oricultural crops requires the segregation of plant cuttings into categories based on size. The cuttings however must be graded when they are planted...
Early results in the grading of vegetative cuttings using computer vision (1996)
ii Commercial vegetative propagation of floricultural crops requires the segregation of plant cuttings into categories based on size. The cuttings however must be graded when they are planted...