2003 IEEE International SOI Conference. Proceedings (Cat. No.03CH37443)

17 Oct. 2003

Filter Results

Displaying Results 1 - 25 of 37
  • Human recognition of familiar and unfamiliar people in naturalistic video

    Publication Year: 2003, Page(s):36 - 41
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (327 KB) | HTML iconHTML

    Understanding the human performance factors that mediate successful person identification can be helpful in the development of automatic face recognition algorithms. Face familiarity and facial motion are two factors that seem especially useful when subjects make recognition decisions from challenging viewing formats. We tested the effects of these two factors on person recognition from naturalist... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Manifold of facial expression

    Publication Year: 2003, Page(s):28 - 35
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4376 KB)

    We propose the concept of manifold of facial expression based on the observation that images of a subject's facial expressions define a smooth manifold in the high dimensional image space. Such a manifold representation can provide a unified framework for facial expression analysis. We first apply active wavelet networks (AWN) on the image sequences for facial feature localization. To learn the st... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Model-based 3D face capture with shape-from-silhouettes

    Publication Year: 2003, Page(s):20 - 27
    Cited by:  Papers (21)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (914 KB) | HTML iconHTML

    We present a method for 3D face acquisition using a set or sequence of 2D binary silhouettes. Since silhouette images depend only on the shape and pose of an object, they are immune to lighting and/or texture variations (unlike feature or texture-based shape-from-correspondence). Our prior 3D face model is a linear combination of "eigenheads" obtained by applying PCA to a training set of laser-sca... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Rank constrained recognition under unknown illuminations

    Publication Year: 2003, Page(s):11 - 18
    Cited by:  Papers (9)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (387 KB) | HTML iconHTML

    Recognition under illumination variations is a challenging problem. The key is to successfully separate the illumination source from the observed appearance. Once separated, what remains is invariant to illuminant and appropriate for recognition. Most current efforts employ a Lambertian reflectance model with varying albedo field ignoring both attached and cast shadows, but restrict themselves by ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Human body tracking with auxiliary measurements

    Publication Year: 2003, Page(s):112 - 119
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (538 KB) | HTML iconHTML

    We present two techniques for improving human body tracking within the particle filtering scheme. Both techniques explore the use of auxiliary measurements. The first technique uses optical flow cues to improve the sampling distribution. The second technique involves the detection of individual body parts, namely the hand, head and torso; and using these detection results to provide additional inf... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Absolute head pose estimation from overhead wide-angle cameras

    Publication Year: 2003, Page(s):92 - 99
    Cited by:  Papers (17)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (657 KB) | HTML iconHTML

    Most surveillance cameras have a wide-angle field of view and are situated unobtrusively at overhead positions. For this type of application, head pose estimation is very challenging because of the limitations of the quality and resolution of the incoming data. In addition, even though the absolute head pose is constant, the head pose in camera view changes depending upon the location of head with... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Discriminant analysis of stochastic models and its application to face recognition

    Publication Year: 2003, Page(s):5 - 10
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB) | HTML iconHTML

    As the vital component of a recently developed stochastic model based feature generation scheme, Fisher score is increasingly used in classification applications. We present a generalization of previous proposed feature generation schemes by introducing the concept of multiclass mapping, which is oriented to multiclass classification problems. Based on the generalized feature generation scheme, a ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Boosted audio-visual HMM for speech reading

    Publication Year: 2003, Page(s):68 - 73
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (283 KB) | HTML iconHTML

    We propose a new approach for combining acoustic and visual measurements to aid in recognizing lip shapes of a person speaking. Our method relies on computing the maximum likelihoods of (a) HMM used to model phonemes from the acoustic signal, and (b) HMM used to model visual features motions from video. One significant addition is the dynamic analysis with features selected by AdaBoost, on the bas... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • CSLDS: Chinese sign language dialog system

    Publication Year: 2003, Page(s):236 - 237
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (309 KB) | HTML iconHTML

    We present a Chinese sign language dialog system (CSLDS) based on the technique of large vocabulary continuous Chinese sign language recognition (CSLR) and Chinese sign language synthesis (CSLS). This system can show the advance technology on gesture recognition and synthesis well and can apply to more powerful system combined with speech recognition and synthesis technology, which then can allow ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Head pose estimation using Fisher Manifold learning

    Publication Year: 2003, Page(s):203 - 207
    Cited by:  Papers (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2752 KB) | HTML iconHTML

    Here, we propose a new learning strategy for head pose estimation. Our approach uses nonlinear interpolation to estimate the head pose using the learning result from face images of two head poses. Advantage of our method to regression method is that it only requires training images of two head poses and better generalization ability. It outperforms existed methods, such as regression and multiclas... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Illumination modeling and normalization for face recognition

    Publication Year: 2003, Page(s):104 - 111
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (737 KB) | HTML iconHTML

    We present a general framework for face modeling under varying lighting conditions. First, we show that a face lighting subspace can be constructed based on three or more training face images illuminated by noncoplanar lights. The lighting of any face image can be represented as a point in this subspace. Second, we show that the extreme rays, i.e. the boundary of an illumination cone, cover the en... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Sequential Monte Carlo tracking of body parameters in a sub-space

    Publication Year: 2003, Page(s):84 - 91
    Cited by:  Papers (4)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB) | HTML iconHTML

    In recent years sequential Monte Carlo (SMC) methods have been applied to handle some of the problems inherent to model-based tracking. Two issues regarding SMC are investigated in the context of estimating the 3D pose of the human arm. Firstly, we investigate how to apply a subspace to representing the pose of a human arm more efficiently, i.e., reducing the dimensionality. Secondly, we investiga... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Real-time view-based face alignment using active wavelet networks

    Publication Year: 2003, Page(s):215 - 221
    Cited by:  Papers (13)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (513 KB) | HTML iconHTML

    The active wavelet network (AWN) [C. Hu et al., (2003)] approach was recently proposed for automatic face alignment, showing advantages over active appearance models (AAM), such as more robustness against partial occlusions and illumination changes. We (1) extend the AWN method to a view-based approach, (2) verify the robustness of our algorithm with respect to unseen views in a large dataset and ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Facing the future

    Publication Year: 2003, Page(s): 4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (188 KB)

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Probabilistic tracking and recognition of nonrigid hand motion

    Publication Year: 2003, Page(s):60 - 67
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (811 KB) | HTML iconHTML

    Successful tracking of articulated hand motion is the first step in many computer vision applications such as gesture recognition. However the nonrigidity of the hand, complex background scenes, and occlusion make tracking a challenging task. We divide and conquer tracking by decomposing complex motion into nonrigid motion and rigid motion. A learning-based algorithm for analyzing nonrigid motion ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Avoiding replay-attacks in a face recognition system using head-pose estimation

    Publication Year: 2003, Page(s):234 - 235
    Cited by:  Papers (16)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (891 KB) | HTML iconHTML

    The subject is a challenge response mechanism used as an optional add-on to the face recognition part of the multi modal biometric authentication system "BioID". This mechanism greatly enhances security in regard to replay attacks. The user is required to look into a certain direction, which is randomly chosen by the system. By estimating the head pose, the system verifies the user's response to t... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Fully automatic upper facial action recognition

    Publication Year: 2003, Page(s):195 - 202
    Cited by:  Papers (33)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (469 KB) | HTML iconHTML

    We provide a new fully automatic framework to analyze facial action units, the fundamental building blocks of facial expression enumerated in Paul Ekman's facial action coding system (FACS). The action units examined here include upper facial muscle movements such as inner eyebrow raise, eye widening, and so forth, which combine to form facial expressions. Although prior methods have obtained high... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Pose estimation using 3D view-based eigenspaces

    Publication Year: 2003, Page(s):45 - 52
    Cited by:  Papers (23)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1120 KB) | HTML iconHTML

    We present a method for estimating the absolute pose of a rigid object based on intensity and depth view-based eigenspaces, built across multiple views of example objects of the same class. Given an initial frame of an object with unknown pose, we reconstruct a prior model for all views represented in the eigenspaces. For each new frame, we compute the pose-changes between every view of the recons... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Component-based LDA method for face recognition with one training sample

    Publication Year: 2003, Page(s):120 - 126
    Cited by:  Papers (12)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB) | HTML iconHTML

    Many face recognition algorithms/systems have been developed in the last decade and excellent performances are also reported when there is sufficient number of representative training samples. In many real-life applications, only one training sample is available. Under this situation, the performance of existing algorithms will be degraded dramatically or the formulation is incorrect, which in tur... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Using similarity scores from a small gallery to estimate recognition performance for larger galleries

    Publication Year: 2003, Page(s):100 - 103
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (269 KB) | HTML iconHTML

    We present a method to estimate recognition performance for large galleries of individuals using data from a significantly smaller gallery. This is achieved by mathematically modelling a cumulative match characteristic (CMC) curve. The similarity scores of the smaller gallery are used to estimate the parameters of the model. After the parameters are estimated, the rank 1 point of the modelled CMC ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Inference of human postures by classification of 3D human body shape

    Publication Year: 2003, Page(s):74 - 81
    Cited by:  Papers (56)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3065 KB) | HTML iconHTML

    We describe an approach for inferring the body posture using a 3D visual-hull constructed from a set of silhouettes. We introduce an appearance-based, view-independent, 3D shape description for classifying and identifying human posture using a support vector machine. The proposed global shape description is invariant to rotation, scale and translation and varies continuously with 3D shape variatio... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Iris tracking with feature free contours

    Publication Year: 2003, Page(s):208 - 214
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (377 KB) | HTML iconHTML

    An active contour method is presented and applied to robust iris tracking. The main strength of the method is that the contour model avoids explicit "feature" detection: contours are simply assumed to remove statistical dependencies on opposite sides of the contour. The contour model is utilized in particle filtering together with the EM algorithm. The method shows robustness to light changes and ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A quantified study of facial asymmetry in 3D faces

    Publication Year: 2003, Page(s):222 - 229
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4272 KB) | HTML iconHTML

    With the rapid development of 3D imaging technology, the wide usage of 3D surface information for research and applications is becoming a convenient reality. We focus on a quantified analysis of facial asymmetry of more than 100 3D human faces (individuals). We investigate whether facial asymmetry differs statistically significantly from a bilateral symmetry assumption, and the role of global and ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Is face recognition in pictures affected by the center of projection?

    Publication Year: 2003, Page(s):53 - 58
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB) | HTML iconHTML

    Recognition of unfamiliar faces can be severely impaired when two pictures of a face are taken from different camera distances. This effect of perspective transformation may be predicted either by a model-based theory, for which the impairment shows a difficulty in constructing the 3D surface geometry, or by an image-based theory, for which it results from dissimilarity between 2D images. To test ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Face modeling and recognition in 3-D

    Publication Year: 2003, Page(s):232 - 233
    Cited by:  Papers (20)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (236 KB) | HTML iconHTML

    We demonstrate a complete and automatic system to perform face authentication by analysis of 3D facial shape. In this live demonstration of the system, the subject is first enrolled, and given a unique identifier. Subsequently, the user's identity is verified by providing the reference identifier. Our approach is to be contrasted with traditional face recognition methods, which compare pictures of... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.