Splatting of Curvilinear Volumes

نویسندگان

  • Xiaoyang Mao
  • Lichan Hong
  • Arie E. Kaufman
چکیده

This paper presents a splatting algorithm for volume rendering of curvilinear grids. A stochastic sampling technique called Poisson sphere/ellipsoid sampling is employed to adaptively resample a curvilinear grid with a set of randomly distributed points whose energy support extents are well approximated by spheres and ellipsoids. Filter kernels corresponding to these spheres and ellipsoids are used to generate the volumerendered image of the curvilinear grid with a conventional footprint evaluation algorithm. Ezperimental resulta show that our approach can be regarded aa an alternative to existing fast volume rendering techniques of curvilinear grids,

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

Splatting Errors and Antialiasing

This paper describes three new results for volume rendering algorithms utilizing splatting. First, an antialiasing extension to the basic splatting algorithm is introduced that mitigates the spatial aliasing for high-resolution volumes. Aliasing can be severe for high-resolution volumes or volumes where a high depth of field leads to converging samples along the perspective axis. Next, an analy...

متن کامل

Purpose: To develop an efficient algorithm for generating high-quality digitally reconstructed radiographs (DRRs) for regularly and irregularly sampled volumes based on a splatting method with dynamic elliptical Gaussian kernels, and to evaluate this method using ray tracing

ID: 18548 Title: A Splatting Method to Generate DRRs for Deformed CT Volume Purpose: To develop an efficient algorithm for generating high-quality digitally reconstructed radiographs (DRRs) for regularly and irregularly sampled volumes based on a splatting method with dynamic elliptical Gaussian kernels, and to evaluate this method using ray tracing. Methods: The traditional ray tracing method,...

متن کامل

Splatting J . Edward Swan II , Klaus Mueller , Torsten Möller , Naeem Shareef , Roger Crawfis , and Roni Yagel

Splatting is a popular direct volume rendering algorithm that was originally conceived and implemented to render orthographic projections. This paper describes an anti-aliasing extension to the basic splatting algorithm, as well as an error analysis, that make it practical to use for perspective projections. To date, splatting has not correctly rendered cases where the volume sampling rate is h...

متن کامل

Efficient Splatting Using Modern Graphics Hardware

Interactive volume rendering for data set sizes larger than one million samples requires either dedicated hardware, such as three-dimensional texture mapping, or a sparse representation and rendering algorithm. Consumer graphics cards have seen a rapid explosion of performance and capabilities over the past few years. This paper presents a splatting algorithm for direct volume rendering that ut...

متن کامل

Skeletonization and Distance Transforms of 3D Volumes Using Graphics Hardware

We propose a fast method for computing distance transforms and skeletons of 3D objects using programmable Graphics Processing Units (GPUs). We use an efficient method, called distance splatting, to compute the distance transform, a one-point feature transform, and 3D skeletons. We efficiently implement 3D splatting on GPUs using 2D textures and a hierarchical bi-level acceleration scheme. We sh...

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 1995