Local 3D Orientation Analysis and Its Applications

نویسندگان

  • Weichuan Yu
  • Kostas Daniilidis
  • Gerald Sommer
چکیده

In this paper we present a new method for approximation of local 3D orientation based on Gaussian functions. Compared with current 3D steerability approaches our method achieves higher orientation resolution with lower complexity. This property enables us to solve challenging problems like multiple motion estimation and 3D complex surface analysis. We address the tessellation of a spherical surface and decompose the sphere with a set of overlapping isotropic basis l-ter kernels. We study the problem of non-uniform distribution of the spherical coordinates and discuss the application of a weighting compensation function in the computation of a 3D orientation signature.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A 3D Isotropic Quadrature Filter for Motion Estimation Problems

Quadrature filters are a well known means for local spectral analysis of images and to extract relevant structure. Recently, there has been the discovering of an isotropic quadrature filter for images that does not need steering with respect to orientation and provides the user with geometric (local orientation) and structural (local phase) information. Here, we present a further extension of t...

متن کامل

Simulation of local scour caused by submerged horizontal jets with Flow-3D numerical model

One of the most concerning issues for researchers is to predict the shape and dimensions of the scour pit nearhydraulic structures such as the base of bridges, weirs, valves and stilling basins due to both financial and humanhazards induced by destruction of the structure. As the scour issue has its own complexity in relation to themultiplicity of effecting factors on it, in this study therefor...

متن کامل

Three dimensional orientation signatures with conic kernel filtering for multiple motion analysis

We propose a new 3D kernel for the recovery of 3D orientation signatures. In the Cartesian coordinates, the kernel has a shape of a truncated cone with its axis in the radial direction and very small angular support. In the local spherical coordinates, the angular part of the kernel is a 2D Gaussian function. A set of such kernels is obtained by uniformly sampling the 2D space of azimuth and el...

متن کامل

3D-Orientation Signatures with Conic Kernel Filtering for Multiple Motion Analysis

In this paper we propose a new 3D kernel for the recovery of 3Dorientation signatures. The kernel is a Gaussian function defined in local spherical coordinates and its Cartesian support has the shape of a truncated cone with axis in radial direction and very small angular support. A set of such kernels is obtained by uniformly sampling the 2D space of polar and azimuth angles. The projection of...

متن کامل

Analysis of 3D Passive Walking Including Turning Motions for the Finite-width Rimless Wheel

The focus of studies in the field of passive walking has often been on straight walking, while less attention has been paid to the field of turning motions. In this paper, the passive motions of a finite width rimless wheel as the simplest 3D model of passive biped walkers was investigated with a focus on turning motions. For this purpose, the hybrid model of the system consisting of continuous...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2008