ÐA unique imaging modality based on Equal Thickness Contours (ETC) has introduced a new opportunity for 3D shape reconstruction from multiple views. These ETCs can be generated through an interference between transmitted and diffracted beams. We present a computational framework for representing each view of an object in terms of its object thickness and then integrating these representations i...

The creation of realistic 3D face models is still a fundamental problem in computer graphics. In this paper we present a novel method to obtain the 3D shape of an arbitrary human face using a sequence of silhouette images as input. Our face model is a linear combination of eigenheads, which are obtained by a Principal Component Analysis (PCA) of laser-scanned 3D human faces. The coefficients of...

We present a closed form solution to the nonrigid shape and motion (NRSM) problem from point correspondences in multiple perspective uncalibrated views. Under the assumption that the nonrigid object deforms as a linear combination of K rigid shapes, we show that the NRSM problem can be viewed as a reconstruction problem from multiple projections from P to P. Therefore, one can linearly solve fo...

We demonstrate that, for a large class of reflectance functions, there is a direct relationship between image warps and the corresponding geometric deformations of the underlying three-dimensional objects. This helps explain the hidden geometrical assumptions in object recognition schemes which involve two-dimensional image warping computed by matching image intensity. In addition, it allows us...

Shape memory alloys are typical temperature-sensitive metallic functional materials due to superelasticity and shape recovery characteristics. The conventional shape memory effect involves the formation and deformation of thermally induced martensite and its reverse transformation. The shape recovery process usually takes place over a temperature range, showing relatively low temperature-sensit...

A new dynamic subdivision surface model is pro posed for shape recovery from D data sets The model inherits the attractive properties of the Catmull Clark subdivision scheme and is set in a physics based mod eling paradigm Unlike other existing methods our model does not require a parameterized input mesh to recover shapes of arbitrary topology allows direct ma nipulation of the limit surface v...

This paper extends the traditional binocular stereo problem into the spacetime domain, in which a pair of video streams is matched simultaneously instead of matching pairs of images frame by frame. Almost any existing stereo algorithm may be extended in this manner simply by replacing the image matching term with a spacetime term. By utilizing both spatial and temporal appearance variation, thi...

This paper presents an al~or i f l i rn for recovering, in st lu, thc shapc of zhc probp used in FL Rcnnnlng prohe microscope. Thp inputs to the d g o r ~ l ~ l ~ n i are the imREP of A reference si~rlarc and the known shapc of 1 he rrCerence surIacr Thr o11tpi11 in n drpth map rrprewriting the lhrw ~ l i r n ~ n ~ i o n a l sh pr of ~11c prnhr 'I'his recovered pmbc shapc can ho uscd to rPstorP...

This paper presents an affine model for 3-D motion and shape recovery using two perspective views and their relative 2-D displacement field. The 2-D displacement vectors are estimated as parameters of a 2D affine model that generalizes standard block matching by allowing affine shape deformations of image blocks and affine intensity transformations. The matching block size is effectively found ...